Mathematics Middle School

solve by factoring
x^2-x -30=0

Answers

Answer 1

Step-by-step explanation:

use the formula if things get to difficult

Solve By Factoring X^2-x -30=0
Answer 2

Answer:x=6 x=-5

Step-by-step explanation:

Related Questions

Andrea uses 3.12 cups of flour in a recipe that makes 8 key lime cupcakes. Corey uses 2.52 cups of flour in a recipe that makes 7 key lime cupcakes. How much more flower per cupcake is needed for Corey’s recipe?
I will give Brian list plz help

Answers

Answer:

The Answer is 0.03

Step-by-step explanation:

Andrea = 3.12/8 flower per cupcake

   3.12/ 8 = .39

Corey = 2.25/ 7 flower per cupcake

   2.25/ 7 = .36

So Corey's recipe needs

( 0.39 - 0.36) = 0.03  flower per cupcake

Corey will need 0.03

Please help me! I will give brainly


Question 1
An ear of corn has about $16$ rows of kernels. Each row has about $50$ kernels of corn.

a. About 0.2 of the kernels are white and the rest are yellow. How many kernels are yellow?

____ kernels

Question 2
b. Each ear of corn has about $0.25$ pound of corn kernels. How many pounds of kernels are in a dozen ears of corn?

_____pounds

Answers

Answer:

a. 640 kernels

b. 3 pounds

Step-by-step explanation:

a:

Total kernels = 16 * 50 = 800

White kernels = 800 * 0.2 = 160

Yellow kernels = 800 * 0.8 = 640

b:

1 ear weight = 0.25 pounds

12 ears weight = 12 * 0.25 = 3 pounds

a. The number of kernels which are yellow is 640.

b. The amount of kernels will be 3 pounds.

An expression is a combination of symbols, variables, numbers, and operators that represents a value or a computation. It can consist of constants, variables, and mathematical operations such as addition, subtraction, multiplication, division, exponentiation, and more.

Expressions can be simple or complex, involving multiple terms and operations. They are commonly used in mathematics, computer programming, and symbolic logic to represent calculations, equations, and relationships between quantities.

a:

Total kernels = 16 x 50 = 800

White kernels = 800 x 0.2 = 160

Yellow kernels = 800 x 0.8 = 640

b:

1 ear weight = 0.25 pounds

12 ears weight = 12 x 0.25 = 3 pounds

To know more about an expression follow

https://brainly.com/question/15445286

#SPJ2

HELPPP PLEASE I DON'T UNDERSTAND!!

Answers

Answer:

B

Step-by-step explanation:

If all the coordinates are placed in a graph, the line would be straight. This would mean it is linear.

The answer is b,d,c, because the increase in x is same and the increase in y is also same but in a the increase in x is exponential meaning it gets multiplied so that is not linear.

Hope this helps!

Item 18
A flagpole casts a shadow that is 7 feet long. At the same time, a man standing nearby who is 6 feet tall casts a shadow that is 25 inches long. How tall is the flagpole to the nearest foot?

Answers

7/x= 6/25
175 =6x
29.1666
So nearest foot is 29 feet

Greg purchased n notebooks. They were 4 dollars each. Write an equation to represent the total cost c that Greg paid.

Answers

It might help you to think about what you would do if you were given a specific number of notebooks. If he bought 5 notebooks, it would cost 5 * 4 = 20, right? If he bought 3, you would multiply 3 * 4. Whatever number he bought, you would multiply it by 4 to see how much it would cost. So if n is the number bought, the cost will by 4 * n,or to write it more simply, 4n.
Make sense? If not, ask more.
Mary

Answer:

c = 4n

Step-by-step explanation:

The total cost (c) is going to be of the 4 notebooks together

We don't know how many notebooks Greg got, so it's represented by n.

It doesn't matter how many notebooks Greg purchased, because each of them were $4.

So to represent the total cost of the notebooks, you would write c = 4n

IM SO SORRY PLEASE HELP ME!!!

Answers

Answer:B,D i think that's it

Step-by-step explanation: lmk if it was right or wrong

D for sure, and maybe E

64 is 4 times the difference between Sarah's age, a, and 44. Assume Sarah is older than 44.

Answers

Answer:

Sarah is 60 years old

Step-by-step explanation:

64 divided by 4 is 16. Add 16 to 44 to get Sarah's age, 60

Answer: She is 60 years old

Step-by-step explanation:

A pair of equations is shown below:

y = 2x − 1
y = 4x − 5

Part A: In your own words, explain how you can solve the pair of equations graphically. Write the slope and y-intercept for each equation that you will plot on the graph to solve the equations. (6 points)

Part B: What is the solution to the pair of equations? (4 points)

Answers

This kinda took a lot of effort but hope it helps
solved this on a napkin but whatever lol

A monkey is swinging from a tree. On the first swing, she passes through an arc of 10 m. With each swing, she passes through an arc 9/10 the length of the previous swing.

What is the total distance the monkey has traveled when she completes her 25th swing? Round your final answer to the nearest meter.

Answers

Answer:

250,000 meters (m)

Step-by-step explanation:

First swing she passed through an arc of:

10m

Each swing, she passed through an arc of :

9/10

9/10×10=10

25×10=250km

250km converted to the nearest m=

250,000 Meters (m)

Note: *This is my opinion, you can try it and see if it's correct,I'm sorry if it's not. Good luck!*

250,000 meters (m)
Explanation guy above me

questions
solve for k.
4m+5k=3t

solve for b.
a/7 + b/3 = x/21

Answers

Answer: k= 3t/5 - 4m/5
Explanation: Solve as if you knew the numbers
Answer: k=3t/5-4m/5
Explanation: Solve as if you knew the numbers

Stacey earns money by walking dogs she walks the same route seven days a week each week she walks a total of 56 miles what is her walking rate in miles per day

Answers

Answer:

8

Step-by-step explanation:

56/7 = 8

the answer is 8

56 miles a week/ 7 days in a week = 8 miles per day

Solve the equation by factoring:
6x2-0.5x=0

Answers

The solutions to the equation [tex]6x^{2} -0.5x=0[/tex] are [tex]x=0[/tex] and [tex]x=\frac{1}{12}[/tex].

To solve the equation [tex]6x^{2} -0.5x=0[/tex] by factoring, we first need to factor out the common factor of x from the expression:

[tex]x(6x-0.5)=0[/tex]

Next, we can simplify the expression inside the parentheses by factoring out a common factor of 0.5:

[tex]x(12x-1)=0[/tex]

Now, we have two factors being multiplied together that give a product of zero. According to the zero product property, this means that either [tex]x=0[/tex] or [tex]12x-1=0[/tex]. Solving for x in the second equation, we get:

[tex]12x-1=0[/tex]

[tex]12x=1[/tex]

[tex]x=\frac{1}{12}[/tex]

Therefore, the solutions to the equation [tex]6x^{2} -0.5x=0[/tex] are [tex]x=0[/tex] and [tex]x=\frac{1}{12}[/tex].

To know more about factoring visit: https://brainly.com/question/1863222

The sum of two consecutive integers is -92. Find the integers.

Answers

Answer:

x = -46.5

x + 1 = -45.5

Step-by-step explanation:

x + x + 1 = -92

2x + 1 = -92

      -1       -1

------------------

   2x = -93

   ----     ----

    2        2

   x = -46.5

x + 1

(-46.5) + 1

-45.5

Answer:

No solution

Step-by-step explanation:

We can set up an equation where x is the integer and x+1 is the next one

x+x+1=-92

2x+1=-92

2x/2=-93/2

x=-46.5

-46.5+1=-45.5

The problem is that integers do no include decimals so there is no possible whole number. This problem would be possible if it was consecutive odd integers.

12(43)

5 (88)

8 (63)

7 (28)

Please help me i tried to do this but I really don't get this can somebody help? plsssssssssssssssssssssssssssssss(sorry for spam)

Answers

I’m not entirely sure how to answer this without a word problem, but from what I see, all you have to do is multiply the two numbers.
12 x 43= 516
5 x 88 = 440
8x 63= 504
7 x 28= 196
Usually, when you see a number followed by another number in parentheses, like here, that means to multiply.
12(43)=516
5(88)=440
8(63)=504
7(28)=196

. Emma wanted to make an origami fish for each of her 22 classmates. She takes 30 minutes to make one fish. How long will Emma take to make all the fish? A 320 minutes B 11 hours © 600 minutes D 660 hours​

Answers

Answer:

11 hours

Step-by-step explanation:

50 minutes = 1 hour

30 minutes = 1/2 hour

She takes 1/2 per fish.

1/2 * 22 = 11

Answer: 11 hours

Simply multiply 22 and 30 and your answer will be 660 minutes.

Hope this helps!

please help me answer for this quickly

Answers

1, always
2, never
3, sometimes
(i think)
Always, sometimes, never

sin0+sin0+2sin0+3sin0
step by step

Answers

Answer:

0

Step-by-step explanation:

the value of sin 0 degree is always equal to 0.

=0+0+2x0+3x0

=0

sin0+sin0+2sin0+3sin0=0

Sinx0+sinx0+2sinx0+3sinx0
Any expression multiplied by 0
equals 0
0+sinx0+2sinx0+3sinx0
0+0+2sinx0+3sinx0
0+0+0+3sinx0
0+0+0+0
0+0+0
0+0
0
This did take me a lot of effort to write but hope it helps

Determine the quotient: 2 4 over 7 ÷ 1 3 over 6.

Answers

Answer:

144/91

Step-by-step explanation:

24/7 ÷ 13/6

Keep the first fraction the same, change the sign, and flip the last fraction to solve

24/7 × 6/13 = 144/91

Answer:

144/91

Step-by-step explanation:

24/7 ÷ 13/6

Keep the first fraction the same, change the '÷' sign to '× ' and reciprocal of the last fraction to solve.  

24/7 × 6/13 = 144/91

Question 1
Click the refresh button until you get a right triangle with A as the right angle. Fill in the fraction forms of sin B, cos B, tan B and then the
associated measure of B using sin^-1, cos^-1, and tan^-1, rounded to three decimal places each. Then fill in the fraction forms of sin C, cos C, tan C, and the associated measure of C using sin^-1, cos^-1, and tan ^-1 rounded to three decimal places.

Answers

x=width of pool

2x=length of pool

the dimensions of the rectangle forming the walkway and the pool are x+4 and 2x+4

the area of this rectangle minus the area of the pool is 196 square feet

(2x+4)(x+4)-(x)(2x)=196

2x^2+4x+8x+16-2x^2=196

combine similar terms

12x+16=196

12x=196-16

12x=180

x=180/12

x=15 feet is the width of the pool

check: 34*19-30*15=196

646-450=196

196=196

Answer:

Step-by-step explanation:

Please I need this help asap

Answers

1) 30 red and 20 blue
2) 36
We’ll if there is 8 pints in one gallon, and one pint takes 3 red drops and 2 blue drops, then 8*3=24 drops of red per gallon and 2*8=16 drops of blue per gallon. 24 red drops*50 and 16 blue drops * 50. Answer comes to 1,200 red drops and 800 blue drops.

A circle is cut from a square piece of cloth, as shown:

A square, one side labeled as 42 inches has a circle inside it. The circle touches all the sides of the square. The portion of the square outside the circle is shaded.

How many square inches of cloth are cut from the square? (π = 3.14)

131.88 in2
168.00 in2
1,384.74 in2
1,764.00 in2

Answers

Answer:

A

Step-by-step explanation:

I think you are supposed to do is 42x3.14=131.88 so the answer is 131.88

hope this helps :)

Answer:

Step-by-step explanation:

Given the choices of answers we have to consider that:

The cloth is cut from the square = Area of circle

Area of circle = π r² = 3.14 * 21² = 1,384.74 in²

I really need help with this math question ASAP

Answers

It seems that Jenny misplaced the decimal the correct answer should be 0.45
The correct answer is 0.45

The speed limit is 55mph. How far can you travel in 3 hours going the speed limit? How far can you travel if you went 5 miles over the speed limit?

Answers

Answer:

If you were going the speed limit, after 3 hrs, you would go 165 miles.

If you were going 5 miles above the speed limit you would go 180 miles.

Step-by-step explanation:

55 x 3 = 165

55 + 5 = 60

60 x 3 = 180

Answer:

165miles

180miles

Step-by-step explanation:

If going 55mph for 3 hours,

55miles/hour * 3hour = 165miles

If going 60mph (5 over the limit) for 3 hours:

60miles/hour * 3hour = 180miles

Choose the correct equation. Then solve the equation.


A sales representative earns weekly base salary of $250 and a commission of 8% on her weekly sales. (A commission is money earned that equals a percent of the sales.) At the end of one week, she earned $410. How much did she sell that week? Let s represent the total sales.

A. 250 + 0.08s = 410

B. 250 + 410 = 0.08s

Answers

A. 250+0.08s=410
-250. -250
0.08s= 160
0.08s/0.08s 160/0.08s
S=2000
Your answer would be:A. 250+0.08s =410

Currently, Jacob’s mother is three more than nine times as old as Jacob. In eleven years, his mother will be five more than three times his age. Write a system of linear equations that models this situation. Let j represent Jacob's age, and let m represent his mother's age.
Write an equation that relates Jacob and his mother's current ages. Solve the system of equations.
What are their ages?

Answers

Answer:

Jacob is 4 years old and his mother is 40 years old.

Step-by-step explanation:

Part 1: The linear equations are  and

Part 2: Solving the equations, we have,  and

Part 3: Jacob is 4 years old and his mother is 40 years old.

Explanation:

Part 1: Let j represent Jacob's age, and let m represent his mother's age.

It is given that, "Jacob's mother is three more than nine times as old as Jacob". Writing it as linear equation, we have,

It is also given that, "In eleven years, his mother will be five more than three times his age". Writing it as linear equation, we have,

Simplifying this, we get,

Thus, the linear equation is

The linear equations are   and

Part 2: Solving the linear equation, we get,

Substituting  in

Simplifying, we get,

Hence,

Substituting  in

Solving the equations, we have,  and

Part 3: Since, j represents jacob and m represents the jacob's mother

Thus, Jacob is 4 years old and his mother is 40 years old.

Jacob - 4 years old
The Mother - 40 years old

I NEED HELP PLEASEEEE

Answers

Answer:

D

Step-by-step explanation:

a,b,c are the same thing just in different forms so d is the right one.

also a is suppose to be a/1 i think for question d

The answer to your question is D

The expression (F - 32) • 5/9 can be used to convert a temperature from Fahrenheit to Celsius.

1. Find the temperature in Celsius if it is 50°F.

2. Find the temperature in Celsius if it is -10°F.

Answers

Answer:

1.) 10

2.) 14

Step-by-step explanation:

1. 50-32= 18•5/9= 10*C

2. -10-32= -42•5/9= -23.33*C

(01.01 LC)What should be added to 3 to make the sum 0?

−3
−2
0
3

Answers

Answer:

-3

Step-by-step explanation:

math

Answer:

-3

Step-by-step explanation:

Adding -3 to 3 makes the sum equal to 0:

3 + (-3) = 3 - 3 = 0

What is the equation of the graph?

y = 4x
y = 1/4x
y = -1/4x
y = -4x

Answers

y=1/4x is the correct answer
y =1/4x hope this helps

HELPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

d

Step-by-step explanation:

its a rational number because it isn't 0 and the others are incorrect i think

Answer:

Pretty sure its D

Step-by-step explanation:

Process of elimination....All the other ones seem to be incorrect.

Other Questions
HELP PLEASE URGENT!!!!Kelly works at her own nail salon. Today, she did 11 manicures and received $46.75 overall in tips If x represents the cost of each manicure, which of the following equations can be used to find the total amount of money she eamed, including tips, for her nail salon today? What is a good hook to start off a paragraph about why certain books should not be banned from schools and libraries? ____ church on the corner is progressive. Part 1.Exercise 1: Choose one word whose underlined part is pronounced differently.1/A. activityB. annualC. annoucement D. anniversary2. A. spiritB. stimulateC. maximum D. childish3. A. societyB. remoteChostessD. cosy4. A. representative B. generalC. refreshmentD. celebrate5. A.) marathonB. enthusiastic C. ethnicD. smoothly6. A. effectiveB. eradicateC. enthusiatic D. effort7. A. campaign B. clapC. craftD. gratitude8. A. mutualB) universalC. usualD. survey9. A. strategyB. gerneralC. geography D. great10.A. minority B. martyrC. cosyD. loyalty11. A. charityB. gratitudeC. craftD. attitude12.A. donation B. remoteD. minority18.A. yesidentialB. refreshmentC. remoteD. remember14.A. issueB. minorityC. childishD. brighten15. A. clearB. nearC. bearD. hear(C. COSY breathing into a air bag is yet .......cure for hiccups?a) anotherb) others3 the others CAN SOMBOBY HELP ME find the surface area of each figure. Round it to the nearest tenth if necessary. Write an algorithm for a vending machine that sells just one product. The machine flashes a yellow light when the quantity inside is below 40% of capacity Role of mitosis in plant growth and development what is y=2x*2-6x-8 as a graph In a city of 26000 populations, 5000 read English newspaper, 12000 read Nepali newspaper and 1000 read both. What percentage read neither English and Nepali newspaper? ( from set theory ) Write an equation for the graph below in terms of x Ngi ta chiu x liu 3000 Rn ghen vo mt qun th rui dm th h F1: Chiu x 1000 con rui dm khng cho n ng th c 80 con b t bin v chiu x 1000 con rui dm c cho n ng th c 120 con b t bin. Cho n ng c nh hng n t l t bin ca rui gim khng, vi mc ngha 5%? Gi tr kim nh l Please help me with this I need it BRAINLIEST if correct! +20 ptsSelect the adjective phrase to complete the sentence.Alexa held the bouquet _______.A. of white rosesB. in a tight gripC. with her right handD. and smiled brightly The host at the end of the video claims that ___________ is crucial to his success as a driver. A. Reaction time B. A safe space C. His seat belt Which of the following statements is generally true about flixable people? a) They get confused easily. b) are open to trying new things. c) They prefer to work with people who are similar to themselves. d) They prefer to focus on many tasks simultaneously. Find all real zeros of the function y = 2x - 4.a.2C.-4b. 2, -4d. -2 hat is the measure of x?X = [?]D126 Describe the principle and process for the manufractured of sulphuric acid witha a well labeled diagram by contact process. Help me please..