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3 years ago

Help on these questions

Mathematics

2 answers:

lana66690 [7]3 years ago

7 0

Answer:

the answer is 42.

Step-by-step explanation:

(8)(5)−8+(2)(5)

=42

Aneli [31]3 years ago

4 0

Answer:

1: 42

2: 107.6 °F

Step-by-step explanation:

For question 1 you insert the x and y values into the expression:

8 × 5 = 40 (xy = 40)

40 - 8 = 32 (xy - x = 32)

2 × 5 = 10 (2y = 10)

32 + 10 = 42 (xy - x + 2y = 42)

For question two you insert the celsius value into the expression:

9/5 × 42 = 75.6 (9/5C = 75.6)

75.6 + 32 = 107.6 (9/5C + 32 = 107.6)

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Morgarella [4.7K]

Find the separate areas.

We have a triangle with base 5 cm and height 5 cm, calculate the area:

$\sf A=\dfrac{1}{2}bh$

Plug in what we know:

$\sf A=\dfrac{1}{2}(5)(5)$

Multiply:

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Now for the two quarter circles, we know that if we put these two together we will end up with a semi-circle with radius 5 cm. The formula for the area of a circle is:

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A semi-circle is half of a whole circle, so the formula for the area of it must be:

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$\sf A\approx\dfrac{1}{2}(3.14)(25)$

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Found this. Hope it helps.

https://www.algebra.com/algebra/homework/word/coins/Word_Problems_With_Coins.faq.question.1059726.html

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