Answers
Answer: B.10
Step-by-step explanation:
60+3x=90
subtract 60
3x=30
divide by 3
x=10
Related Questions
If 8x−5y=−3 is a true equation, what would be the value of 8x−5y+7?
Answers
Answer:
Value of 8x -5y + 7 is 4.
Step-by-step explanation:
Given that:
8x-5y = -3 Eqn 1
It is a true equation.
Now we have to find the value of the given expression
8x -5y + 7
Putting value of 8x-5y from Eqn 1 in the given expression
8x - 5y + 7
-3 + 7
4
Therefore,
8x - 5y + 7 = 4
Hence,
Value of 8x -5y + 7 is 4.
If the camper leader has 12 campers, how much does she spend on books?
Answers
Answer:
bro how she got 12 campers
Step-by-step explanation:
What is the value of y? Show you’re work
Answers
Answer:
Y = 32
Step-by-step explanation:
First traingle is 180 degrees
So 180 - 52 = 128
Then 2y + 2y = 4y
So now 128/4 = 32
If you wanna checl ur answer just put the number in and check if it equal to 180
Does anybody know the answer to this I just need to finish the homework assignment to work on other stuff lol
Answers
Answer: C
Step-by-step explanation:
Marcel and Floyd are playing games at an arcade. Marcel has $8.25 and is only playing $0.25 games. Floyd has $9.75 and is only playing $0.75 games. Jorge wants to find the number of games after which Marcel and Floyd will have the same amount of money remaining. Jorge’s work is shown below.
Let x = the number of games played.
Equation: 8.25 minus 0.25 x = 9.75 minus 0.75 x. Step 1: negative 1.50 minus 0.25 x = negative 0.75 x. Step 2: negative 1.50 = 0.50 x. Step 3: negative 3 = x.
Jorge knows his answer is incorrect because it does not make sense to have a negative number of games. What is Jorge’s error?
The variable x should represent the amount of money left.
From Step 1 to Step 2, Jorge did not add 0.25x correctly to both sides.
The equation should have sums on both sides.
From Step 2 to Step 3, Jorge should have subtracted 0.50x from both sides.
Answers
Answer:
The variable x should represent the amount of money left.
Step-by-step explanation:
im not sure but this one makes sense
Answer:
The Answer to this problem is (A)
St)ep-by-step explanation:
The variable x should represent the amount of money left.
The cost to manufacture a hair clip is $0.50. With a markup of 200%, what is the selling price of this hair clip?
Answers
Answer:
Step-by-step explanation:
The cost to manufacture a hair clip is $0.50. With a markup of 200%, what is the selling price of this hair clip?
Given data
cost to manufacture a hair clip is $0.50
markup of 200%
Required
The selling price
We know that
Mark up percent= selling-cost/cost*100
200= selling-0.5/0.5*100
200-selling= 50/0.5
200-selling= 100
selling= 200-100
selling = 100
Hence the selling price is $100
Solve for a missing factor,
1. ____ x 10 = 320
2. 10 x 17 = ____
3. ____ tens = 290
Answers
Answer:
1. 32
2. 170
3. 29
Step-by-step explanation:
1. is just 10 divided by 320, which gives you 32
2. is 10 times 17 which is 170
3. you need 29 tens to get 290.
2. 170_________
Graph the equation y = -x^2+ 8x – 15 on the accompanying set of axes. You must plot 5 points including the roots and the vertex. Using the graph, determine the roots of the equation –x^2 + 8x – 15 = 0.
Answers
Answer:
Graph below
Step-by-step explanation:
Graph of the Quadratic Function
We are given the function:
[tex]y=f(x)=-x^2+8x-15[/tex]
Select 5 values of x={2,3,4,5,6}
And calculate the corresponding values of y:
[tex]f(2)=-2^2+8*2-15=-4+16-15=-3[/tex]
[tex]f(3)=-3^2+8*3-15=-9+24-15=0[/tex]
[tex]f(4)=-4^2+8*4-15=-16+32-15=1[/tex]
[tex]f(5)=-5^2+8*5-15=-25+40-15=0[/tex]
[tex]f(6)=-6^2+8*6-15=-36+48-15=-3[/tex]
We have obtained the points
(2,-3) (3,0) (4,1) (5,0) (6,-3)
Now we plot them in the graph below.
It can be noted three remarkable points:
The vertex is located at (4,1)The roots are located at (3,0) and (5,0)The roots of the equation
[tex]-x^2+8x-15=0[/tex]
Are x=3 and x=5.
HELP ME PLS...................TY
Answers
Answer:
E
Step-by-step explanation:
the only one where all the pieces of the equation have the same signs
What is the product?
Answers
Answer:x=45.6
Step-by-step explanation:
Answer:
(x^2 - 5x^2 + 4x) / 2x + 8
Step-by-step explanation:
(x^2 - 16) / 2x + 8 * (x^3 - 2x^2 + x) / (x^2 + 3x -4)
(x^5 - 2x^4 - 15x^3 + 32x^2 -16x) / 2(x - 1)(x + 4)(x + 4)
x(x-1)(x-1)(x+4)(x-4) / 2(x - 1)(x + 4)(x + 4)
(x^3 -5x^2 +4x) / 2x + 8
a certain state the license plate has two digits, then two letters, and then two digits. How many different license plates are possible if letters and digits cannot be repeated?
Answers
Step-by-step explanation:
Choosing 4 digits out of 10 = 10C4 = 210.
Arranging the 4 digits in 4 places = 4!
Total number of ways to arrange digits
= 210 * 4! = 5040.
Choosing 2 letters out of 26 = 26C2 = 325
Arranging the 2 letters in 2 places = 2!
Total number of ways to arrange letters
= 325 * 2! = 650.
Total number of possible license plates
= 5040 * 650 = 3,276,000.
Answer:
3,276,000
Step-by-step explanation:
10 x 9 x 26 x 25 x 8 x 7 = 3,276,000
the numbers 10, 9, 8, 7 are the spaces available for a non-duplicated digit
the numbers 26 and 25 are for two non-duplicated letters
9. Factorize: 6x2 - 19x + 14.
Answers
Answer:
Step-by-step explanation:
Here, we want to factor the given polynomial
We have this as;
6x^2 - 19x + 14
= 6x^2 -12x-7x + 14
= 6x(x-2) -7(x-2)
= (6x-7)(x-2)
6x^2-19x + 14 = (6x-7)(x-2)
Pls help it would be a big help rn
Answers
Answer:
1.5 g/mm³
Step-by-step explanation:
Density = [tex]\frac{Mass}{Volume}[/tex]
[tex]\frac{3}{2}[/tex] = 1.5 g/mm³
Quick whoever gives the right answer gets brainliest
Answers
Answer:
The independent variable (IV) is the amount of hamburgers
Step-by-step explanation:
The amount of hamburgers influence the sale amount.
What value of x makes the equation 3(x – 6) – 8x = –2 + 5(2x + 1) true? Explain your answer
Answers
Answer:
x = -7/5
Step-by-step explanation:
3( x - 6 ) - 8x = -2 + 5(2x + 1)
3x - 18 - 8x = -2 + 10x + 5
-5x - 18 = 3 + 10x
-5x - 10x = 3 + 18
-15x = 21
x = [tex]-\frac{7}{5}[/tex]
Explain how to describe the data on a histogram. Write 3-5 sentences.
Answers
Identify the model that shows 4 items being divided equally among 3 people. How much will each person have?
Answers
Answer:
1 1/3
Step-by-step explanation:
lead has a density of 11.35g/cm'3. a lead ball weighs about 2kg. what is the radius of this ball
Answers
Answer:
The radius of the ball is 3.48 cm
Step-by-step explanation:
Density
The density of a substance is the mass per unit volume. The density varies with temperature and pressure.
The formula to calculate the density of a substance of mass (m) and volume (V) is:
[tex]\displaystyle \rho=\frac{m}{V}[/tex]
The density of lead is \rho=11.35\ g/cm^3 and the mass of a ball of lead is m=2 kg=2,000 g. We can calculate the volume by solving for V:
[tex]\displaystyle V=\frac{m}{\rho}[/tex]
[tex]\displaystyle V=\frac{2000\ g}{11.35\ g/cm^3}[/tex]
[tex]V=176.2115\ cm^3[/tex]
Since the shape of the object is a sphere, and the volume of a sphere of radius r is:
[tex]\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3[/tex]
We can solve for r and obtain:
[tex]\displaystyle r=\sqrt[3]{\frac{3V}{4\pi}}[/tex]
Substituting:
[tex]\displaystyle r=\sqrt[3]{\frac{3*176.2115}{4\pi}}[/tex]
[tex]\displaystyle r=\sqrt[3]{42.0674}[/tex]
[tex]\boxed{r=3.48\ cm}[/tex]
The radius of the ball is 3.48 cm
A 12 pound Turkey takes about 90 minutes to cook. How many hours would it take to cook a 20 pound turkey?
Answers
Answer:
2.5 hours
Step-by-step explanation:
it takes 7.5 min to cook each pound, so, take 20 times 7.5 to get the amount of time.
Three support beams for a bridge form a pair of complementary angles. Find the measure of each angle. (4x) (3x+13)
Answers
Answer:
12x2+52x
Step-by-step explanation:
I need help what is the diameter of this circle?
Answers
Answer:
14cm
Step-by-step explanation:
the diameter is 2x the radius
Find the smallest number that is divisible by both 18 and 48.
Answers
Answer:
144
Step-by-step explanation:
write out the 18 and the 48 times tables until you find the smallest number that is in both times tables. and there's your number :)
Pls help semester ends to day pls help with both 16 and 17
Answers
Answer:
Step-by-step explanation:
16. -73.5 ft / 3 min = -24.5 ft/min
17. ($50.25 - $22.50 + $50.25 - $22.50 - $22.50) / 5 = $33 / 5 = $6.60
Answer:
16.-73.5÷3=-24.5 feet per minute
17.(50.25-22.5+50.25-22.5-22.5)÷5=6.6
There were 26 students in the classroom. 14 of the students went to the
cafeteria and the rest went to the gym. What percentage of students
went to the cafeteria?
Answers
Answer:
53.85%
Step-by-step explanation:
14 of the 26 went to the cafeteria
14/26
7/13
Change to decimal form
.538461538
Change to percent form from decimal form
53.85%
Answer:
54% went to the cafeteria
Step-by-step explanation:
14/26= 0.53846153846 or .54
.54*100= 54%
I hope this helps!!!
−2(x + 9) + 25 = 14 − 3x
(step by step pls)
Answers
Answer:
-2x+18+25=14-3x
collect like terms
-2x+3x=14-25-18
x=29
Consider the two expressions.
Expression 1 −4(9x−2)+3
Expression 2 −36x+k
What value of k will make the two expressions equivalent
Answers
Answer:
11
Step-by-step explanation:
Line k is parallel to line l. Lines k and l are parallel. Lines m and n intersect to form 2 triangles. The top triangle has angles 1, 2, 3 and the bottom triangle has angles 4, 5, 6. Which angle is congruent to Angle 4? Angle 1 Angle 2 Angle 5
Answers
Answer:The line that is congruent to angle 4 is angle 1
hope this helped :)
Answer:
a
Step-by-step explanation:
Please can i get help
Answers
Answer:
[tex]\frac{1}{3}x+\frac{1}{2}[/tex]
Step-by-step explanation:
hope this helps :)
SOMEONE HELP GEOMETRY
ALSO THE LAST ANSWER CHOICE WAS
E. AD is congruent it equal to CD
Answers
Answer:
b? Ac should be Perpendicular to BD Or it might be A, but I'm pretty sure that it's B
Step-by-step explanation:
Katie's business is going so well she wants to expand and add a shirt. She makes an isosceles triangle logo like the one below.
What is the angle of B
