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defon
3 years ago
12

Mr. square bought 2 pounds of cheddar cheese and 3 pounds of beef for $26.35. Mrs. Rectangle bought 1.5 pounds of cheese and 2 p

ounds of beef for 18.35. miss circle wants to buy 3 pounds of cheese and 4 pounds of beef. what will her cost be?
Mathematics
1 answer:
sveta [45]3 years ago
4 0
Write 2 equations 2c +3b = 26.35 and 1.5 c +2b = 18.35. Solve the equations by multiplying the first equation by -2 to get -4c -6b =-52.7 and the second equation by 3 to get 4.5c + 6y = 55.05. Add the equations to solve for c = 4.7 and b = 5.65. Now substitute into the equation 3(4.7) +4(5.65) to find the total cost.
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Mateo built the skateboard ramp below and filled it with pebbles to make it more stable.
bagirrra123 [75]

Answer:

The shape can be broken into a rectangular prism and a triangular prism.

The volume of the ramp is 24 feet cubed.

Step-by-step explanation:

The ramp has a rectangular prism and triangular prism. The combined shape makes the ramp.

The volume of a rectangular prism = Bh

where

B = base area

B = length × width

h = height

volume = 1.5 × 4.8 × 2 = 14.4  ft³

The volume of a triangular prism = base area + slant height

volume = 1/2 b × h × l

where

b = base of the triangle

h = height of the triangle

l = slant height of the prism

volume = 1/2 × 2 × 2 × 4.8 = 19.2/2 = 9.6  ft³

The volume of the ramp = 14.4 + 9.6 = 24 ft³

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3 years ago
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a calculator is listed for $110 and is on clearence for 35% off. sales tax is 7%. what is the cost of the calculator
goldfiish [28.3K]

Answer:

$76.51

Step-by-step explanation:

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The price after 7% sales tax has been added in is

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3 years ago
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