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ANTONII [103]
3 years ago
12

Find the unit rate

Mathematics
1 answer:
Anna71 [15]3 years ago
3 0

Answer:

A.  $5

B.  $7

C.  $40

D.  $4

Step-by-step explanation:

To find the unit rate, you need to divide the cost by the amount.

A.  $25/5 = $5 for a movie ticket

B.  $35/5 = $7 for one yard

C.  $240/6 = $40 for a calculator

D.  $8/2 = $4 for a can of tuna

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Evaluate the function found in the previous step at X =-3
babunello [35]
x-5y=-4x-2y

In order to evaluate the given function at x = -3, simply replace "x" in the function with -3 and solve.

-3-5y=-4(-3)-2y

<em>Multiply -4 and -3 in the function above.</em>

-3-5y=12-2y

<em>Add 3 on both sides of the equation.</em>

-3-5y+3=12-2y+3-5y=15-2y

<em>Add 2y on both sides of the equation.</em>

-5y+2y=15-2y+2y-3y=15

<em>Divide both sides of the equation by -3.</em>

\frac{-3y}{-3}=\frac{15}{-3}y=-5

Therefore, at x = -3, the value of y = -5. Hence, f(-3) = -5.

Answer:

f(-3) = -5

<em />

7 0
2 years ago
The ratio of nickles, dimes, and quarters in a jar is 3 : 4 : 7 respectively. If there are total 112 coins in a jar how many of
jasenka [17]

Step-by-step explanation:

Nickels = 112 * 3 / (3 + 4 + 7) = 24.

4 0
3 years ago
Read 2 more answers
According to the U.S. Geological Survey, there are over 300,000,000 cubic miles of water on the planet. How this number represen
Darya [45]

Answer:

3.00x10^8

Step-by-step explanation:

So you want to make sure the number before the x10^ is beween 10 and 0 not including 10 and 0. So 1.00-9.99.

Move the demcil place up in 300,000,000 till your first number is between 1 and 9.99.

Then count how many places you moved it up, in this case 8

Add the amount of times you moved up to the x10^(in this space).

you answer is now 3.00 plus the x10^8

3.00x10^8

4 0
3 years ago
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Calculate the length of this unknown side of the right angled triangle
Alenkasestr [34]

Answer:

a*2+ b*2 =c*2

Step-by-step explanation:

9*2 + b*2 = 17*2

b*2 = √(17*2 -9*2)

b =14.4 cm

7 0
3 years ago
Please help see picture
Otrada [13]

Answer:

688 cm²

Explanation:

Area of triangular prism = Base × Height + Length × (perimeter of base)

Here given:

  • Base: 6 cm
  • Height: 12 cm
  • Length: 20 cm
  • Perimeter of Base: (6 + 12.4 + 12.4) = 30.8 cm

============================================

Surface Area = 6 × 12 + 20 × (30.8) = 688 cm²

5 0
2 years ago
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