2 years ago

Write as an algebraic expression

Mathematics

1 answer:

SIZIF [17.4K]2 years ago

3 0

Answer:

17. $2^{6}$

19. 2 * 5

21. 8²

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A rectangle has length 72 cm and it’s width 56 cm. The other rectangle has the same area as this one, but its width is 21 cm. Fi

Kryger [21]

A = l*w

A = 72* 56

A= 4032

4032 = L*21

4032/21 =L

L =192

5 0

2 years ago

When you are given three side lengths for a triangle, how do you know which length to substitute for a, b, or c in the Pythagore

Romashka [77]

Answer:

When Sum of square of two Sides is equal to square of third side of triangle.

Step-by-step explanation:

Given:

Three side length of triangle are given we need find the which value to substitute for a, b, c in Pythagoras theorem.

First we will find the squares of all length, then we will check which two square of side are equal to square of third side as per Pythagoras theorem.

Hence the two side would according be a and b and third side will become c.

For example if length of triangle is given as 6 cm, 8 cm and 10 cm.

We will first take square of all

$6^2=36\\8^2=64\\10^2=100$

Now we can see that

$36+64=100\\6^2+8^2=10^2$

Now by Pythagoras theorem.

$a^2+b^2=c^2$

Hence we can say a = 6 cm, b = 8 cm, c= 10 cm

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3 years ago

The temperature of a cup of coffee decreased 26% in the first 5 minutes after it was made. The coffee starts at 190°F. What temp

OLEGan [10]

Answer:

it is 140.5 degrees after 5 min

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2 years ago

Each side of a square is increasing at a rate of 5 cm/s. at what rate is the area of the square increasing when the area of the

topjm [15]

<span>This problem is solved using the chain rule. the area of the square is f(t) and the length of the side is g(t) f(t)=g(t)^2 g'(t)=5 Using the chain rule f'(t)=2*g(t)*g'(t) The value of g(t) is sqrt(49) which is 7. g'(t) is given as 5 cm/s f'(t)=2*7*5=14*5=70cm^2/s</span>

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2 years ago

Rachel finished a meal at a diner and received a bill for $10.99. She charged the bill along with a 15 percent gratuity to her

muminat

Answer:

so her bill was 10.99 and she added 15% for the tip, how much is 15% of 10.99?

well, if we take the 10.99 to be the 100%, let's see how much is 15% of that.10.99 + x.

Step-by-step explanation:

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3 years ago