Mathematics High School

HELP PLEASE
3. (03.08)
Solve - 2x2 + 3x - 9 = 0. (2 points)
3+3717
4
3(+-)917
X=
O-3+3/17
X=
4
-3917
X=
4

HELP PLEASE3. (03.08)Solve - 2x2 + 3x - 9 = 0. (2 Points)3+371743(+-)917X=O-3+3/17X=4-3917X=4

Answers

Answer 1

it has no solution, because the D is negative

Answer 2

Answer:

A.

[tex]\frac{3 + - 3i \sqrt{7}} {4} [/tex]

Step-by-step explanation:

i don't know how to write it out the steps on the phone but I got it correct on the test.

Related Questions

help me im so sad determine the values of X for which f(x) is defined ​

Answers

Answer:

[tex]f(x) = \frac{(2x - 1)(3x - 2)}{9x - 4} \\ open \: brackets \\ = \frac{(6 {x}^{2} - 4x - 3x + 2) }{9x - 4} \\ = \frac{6 {x}^{2} - 7x + 2 }{9x - 4} \\ let \: x \: be \: 1 \\ f(1) = \frac{(6 - 7 + 2)}{(9 - 4)} \\ = \frac{1}{5} [/tex]

Omg please help ASAP!!

Answers

Answer:

try the first, fourth, and last one

Step-by-step explanation: when you read the question it say select all that apply to form the equation so all you have to do is select the numbers and the variables that are in the equation above.

An item is regularly priced at $15. Kala bought it on sale for 75% off the regular price find out how much Kalla paid ​

Answers

Answer:

$11.25

Step-by-step explanation:

you take 75% of 15

Answer:

11.25

Step-by-step explanation:

because I used a calculator

Suppose a classroom where a debate is being held has an area of 252 square feet. If the classroom is 14 feet wide, how long is the classroom?

Answers

Answer:

18 feet long

Step-by-step explanation:

252 ÷ 14 = 18

:)

250 adults were randomly selected in a grocery store they were asked how they feel about the stores coupon policy 180 were satisfied with the current policy based on the results of the sample 940 adult shop in the Store that day about how many would be expected to be happy with the current coupon policy

Answers

Answer:

870

Step-by-step explanation:

250-180=70

940-70=870

Answer:

The answer to this question is 677

A baseball player reaches first base 3 out of 10 times he is at bat. If the baseball player bats 80 times, about how many times will the player reach first base?

Answers

Answer:

I think the answer is 24.

Step-by-step explanation:

I think the answer is 24 because if the baseball player hit the bat and ran the base 3 out of 10 times, then you would multiply 8 x 3 to get 24 out of 80. I don't know if this is the correct answer, this is just what I think it may be.

Would the answer be 8?

Answers

Answer:

Step-by-step explanation:

yes i think so because from point d to point s it’s 4 and then from a to l it’s the same length so i do think it would be 8. 4+4 is 8

16-2k=14. what is the value of k​

Answers

Answer:

k = 1

Step-by-step explanation:

16 - 2k = 14

- 16       - 16

    -2k = -2

     -2     -2

       k = 1

Subtract 16 on both sides. -2k = -2
Divide -2 on both sides. k = 1

i’ll give u brainliest!!
what is the area of shape 1, 2 and 3

Answers

Answer:

Shape 1: 25.915

Shape 2: 102.85

Shape 3: 142

Step-by-step explanation:

For shape 1, you have to divide 7.1 to get half the width of the triangle. You get 3.55 from that, and then finding the triangle itself you have to do 7.3*3.55 to get 25.915. For shape 2, you first do the harder parts (the triangles) and since there is two of them we don't need to half the width of each triangle. But first to get the width, we need to do 20-17.4=2.6. But since there are 2 triangles we need to divide that by 2 to get 1.3. Then you multiply that by 5.5 to get the final area of both triangles which is 7.15. Next you simply find the rectangle which is 17.4*5.5=95.7. You add the triangles area to get 102.85. Finally for shape 3 you simply do 7.1*20=142.

Answer:

after u get ur answers, u add up all the numbers to get ur total

Step-by-step explanation:

can someone help me with this ​

Answers

The answer is y=- 7/6x+8
Plz mark me Brainly

Which expression equals 2??
2.2.2.2.2.2.2
O 2+2+2
2 + 2 + 2 + 2
O 2+7
O 2.7

Answers

Answer:

That doesn't make sense to me but what does O means?

Step-by-step explanation:

Well maybe its 2.2.2.2.2.2.2

Answer:

if ur rounding then its 2.2.2.2.2.2.2

Step-by-step explanation:

1. If you randomly select a piece of fruit from this jar, what is the P(orange)? Write answer as a simplified fraction.
2 oranges and 6 apples are in the jar​

Answers

2/8 = 1/4

1/4 is the simplest form of the fraction.

There are 2 oranges out of 8 fruits

A, O and B lie on a straight line segment where
A=24,B=40 C=31
i)AOB=
ii)ZOB=
iii)XOY=
iv)AOY=
v)YOZ=

Answers

Answer:

Step-by-step explanation:

AOB=180°

ZOB =c=31°

XOY=b= 40°

AOY= a+b =24+40  = 64°

YOZ =180-a-b -c=180-24-40-31=85°

Hope this helpsxx

Which is a like radical to 3 sqrt 54 and 3 sqrt 128 when the expression are simplified?

Answers

Answer:

A.) [tex]3\sqrt[]{2}[/tex]

Step-by-step explanation:

Edge 2020 assingment

Goodluck everybody!

∛2 is the radical part of both ∛54 and ∛128  when the expression are simplified.

What is Number system?

A number system is defined as a system of writing to express numbers.

Let us write the prime factors of 54.

54/2 = 27

When fifty four is divided by 2 we get twenty seven.

27/3=9

Twenty seven divided by three is nine.

9/3=3

So 54 = 2 × 3 × 3 × 3

we know ∛ 3 × 3 × 3 = 3

∛54 = ∛ 3 × 3 × 3×2 = 3∛2

Hence, ∛2 is the radical part of both ∛54 and ∛128  when the expression are simplified.

To learn more on Number system click:

https://brainly.com/question/22046046

#SPJ7

The first basketball player scored six points in eight minutes the second basketball player scores 10 points in 12 minutes which basketball player scores more points per minute

Answers

The second basketball player scores more because 10/12 is more than 6/8

Steve decreased the number of miles he ran from 25 to 18. By what percent did the number of miles decrease?

Answers

Answer:

28%

Step-by-step explanation:

1) 25-18=7(your decreased value)

2) 7(decreased value of miles ran)/25(overall number of miles ran)

3) 7/25*4/4 (this will make the denominator 100)=28/100=28%

Select all ratios equivalent to 2:5

Answers

Answer:

Sorry but ummm... you forgot to add a screenshot... :/

Step-by-step explanation:

Maybe post that question again with a screenshot

Answer:

16 : 40

Step-by-step explanation:

it is the only option that will work

Please help, I’m literally crying

Answers

Answer:

1 because 91-18=1

Step-by-step explanation:

What’s the solution for k/2=4

Answers

Answer: k=8

Step-by-step explanation:

k/2 = 4

k = 4 x 2

k = 8

Check: 8/2=4

Answer:

[tex]k=8[/tex]

Step-by-step explanation:

[tex]\frac{k}{2} = 4[/tex]

Multiply both sides by 2 to isolate k

[tex]\frac{k}{2}(2) = 4(2)\\k=8[/tex]

I hope this helps!

simplify 3 to the 2nd power + 1 x 2

Answers

Answer: The answer is 20

Step-by-step explanation:

[tex]\huge\text{Hey there!}[/tex]


[tex]Equation:[/tex]

[tex]\rm{3^2 + 1\times 2}[/tex]


[tex]Simplifying:[/tex]

[tex]\rm{3^2 + 1\times 2}[/tex]

[tex]\rm{= 3\times 3+ 1\times 2}[/tex]

[tex]\rm{= 9 + 1\times2}[/tex]

[tex]\rm{= 9 + 2}[/tex]

[tex]\rm{= 11}[/tex]


[tex]Therefore, your\ answer\ should\ be:[/tex]

[tex]\huge\boxed{\frak{11}}\huge\checkmark[/tex]


[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]


~[tex]\frak{Amphitrite1040:)}[/tex]

need help asap will give brainlest

A system of______linear equations has no solution.

Answers

The answer is Stan twice

ummmmmmmmmmmmmmmmmmmmmmmmmm help pls

Answers

Answer:

[tex]\displaystyle m=\frac{-5}{2}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (2, 2)

Point (4, -3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]:                    [tex]\displaystyle m=\frac{-3-2}{4-2}[/tex]Subtract:                              [tex]\displaystyle m=\frac{-5}{2}[/tex]

An account with an initial deposit of 3,500 earns 7.25% annual interest, compounded continuously. How much will the account be worth after 30 years? Round to the nearest cent.

Answers

Answer: $28,575.05

Step-by-step explanation:

Formula: FV = (1+r/n)^nt

FV = future value of the deposit

P = principal or amount of money deposited

r = annual interest rate (in decimal form)

n = number of times compounded per year

t = time in years.

3,500(1+7.25%)^30=28,575.05468

Why does the narrator state that taking the road less traveled has made all the difference?

Answers

Answer:

See below

Step-by-step explanation:

The phrase itself is a famous few lines extracted from "The Road Not Taken" by poet Robert Frost. The statement "taking the road less traveled" means that someone is acting independently, freeing themselves from the conformity of others (who choose to take 'the road more often traveled.'), generally making their own choices, and perhaps leaving a new trail that will become the road more often traveled

1 whole and 9/13 divided by 1/12

Answers

Answer: 7 whole and 1/11

Step-by-step explanation: Make 1 9/13 into a improper fraction and flip 1/12 and multiple. Then simplify.

A teacher is writing an exam with 60
questions. If she has finished writing 70% of
the questions, how many questions does she
still need to write?


A) 18

B) 20

C) 30

D) 42


Can smb yk..

Answers

20 is the answer your welcome you will get it right don’t worry

Can someone help me? And explain it to me pls<3

Answers

Alright, so, we know that the team started at about 9 1/2 yards right?
Well, since they lost 9 1/1 yards after, we would go negative on the number line meaning that we would move 9 1/2 spaces to the left of the number line.
Now, when we move 9 1/2 spaces to the left of the number line, we get the answer if 0.5 yards.
Glad I could help

HELP ME PLS ITS SO EASY BUT ME BAD

Answers

Answerit would be the first one

Step-by-step explanation:

7/2x + 1/2x = 10 + 9/2x

Answers

Answer:

x=-1/20

Step-by-step explanation:

7/2x+1/2x=10+9/2x

We move all terms to the left:

7/2x+1/2x-(10+9/2x)=0

Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R

Domain of the equation: 2x)!=0

x!=0/1

x!=0

x∈R

We add all the numbers together, and all the variables

7/2x+1/2x-(9/2x+10)=0

We get rid of parentheses

7/2x+1/2x-9/2x-10=0

We multiply all the terms by the denominator

-10*2x+7+1-9=0

We add all the numbers together, and all the variables

-10*2x-1=0

Wy multiply elements

-20x-1=0

We move all terms containing x to the left, all other terms to the right

-20x=1

x=1/-20

x=-1/20

Answer:

[tex] \frac{7}{2} x + \frac{1}{2}x = 10 + \frac{9}{2} x \\ ( \frac{7}{2} + \frac{1}{2} - \frac{9}{2} )x = 10 \\ \frac{ - 1}{2} x = 10 \\ - x = (10 \times 2) \\ x = - (10 \times 2) \\ x = -20[/tex]

For the following right triangle, find the side length x.

Answers

Answer:

x = 17

Step-by-step explanation:

Since its a right triangle, you can use Pythagorean Theorem.

8² + 15² = x² (Given)

64 + 225 = x² (Simplify)

289 = x² (Add like terms)

17 = x (Square root both sides)

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