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Mrrafil [7]
3 years ago
15

I don't understand :(

Mathematics
1 answer:
vodomira [7]3 years ago
6 0
A) area = ( 1/2 ) (base) (height) = (1/2) (9) (5) = 22.5 square units

b) area = 1/2 x base x height = 1/2 x 7 x 6 = 21 square units

c) area = 1/2 x base x height = 1/2 x 5 x 5 = 12.5 square units

You calculate the length of the sides by counting the number of squares
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Suppose a is jointly proportional to b and c. if a=4 when b=8 and c = 9, then what is a when b=2 and c=18
asambeis [7]

From the given information, a exists jointly proportional to b and c.

then $$a \propto b c$

Therefore, the value of a exists 2.

<h3>What is the value of a?</h3>

Given, a exists jointly proportional to b and c.

$$a \propto b c$

Taking K as the constant of proportionality.

a = K b c

For b = 8 and c = 9, the value of a = 4

4 = K(8)(9)

4 = 72 K

Dividing the equation by 72, we get

$K=\frac{1}{18}

Using the value of K in the equation:

$a=\frac{b c}{18}

Substitute the values of b = 2 and c = 18, in the above equation

$a=\frac{2 \times 18}{18} \\

a = 2

Therefore, the value of a exists 2.

To learn more the value of x refers to:

brainly.com/question/11874663

#SPJ4

6 0
11 months ago
Problem Page Ann will run more than 38 miles this week. So far, she has run 21 miles. What are the possible numbers of additiona
krok68 [10]
She has run 21 miles already. Let t be the number of additional miles added on. 

In total, she has run t+21 miles 

This is going to be set greater than 38 since "Ann will run more than 38 miles"

So we have this inequality

t+21 > 38

we solve for t by subtracting 21 from both sides

t+21 > 38
t+21-21 > 38-21
t+0 > 17
t > 17

The final answer is t > 17

which means that the possible additional number of miles she could run is anything larger than 17. So t = 18 is one possibility. 
8 0
3 years ago
I need the answer or thos problem <br> -n+(-4)-(-4n)+6
cluponka [151]

−n−4−−4n+6

=−n+−4+4n+6

Combine Like Terms:

=−n+−4+4n+6

=(−n+4n)+(−4+6)

=3n+2

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3 years ago
If two or more polygons are congruent, which statement must be true about the polygons? Read all of the choices before deciding.
Lisa [10]
Pairs of corresponding angles have the same measure.
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3 years ago
What is the answer too 5x+4x
GenaCL600 [577]

Answer:

9X

Step-by-step explanation:

6 0
3 years ago
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