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3 years ago

PLEASE HELP ME! 10 POINTS! FIND THE SURFACE AREA!

Mathematics

2 answers:

Ne4ueva [31]3 years ago

4 0

The answer is 972 m^2
This is because there are 4 triangles (18*18/2) + one square (18*18) = 972

Karo-lina-s [1.5K]3 years ago

4 0

Answer:

972 m²

Step-by-step explanation:

first area(square base)= 18²=324

all four triangles have the same area

area(triangle)= (1/2)(base)(height)

(1/2)(18)(18)=162

times 4 triangles

4(162)=648

add square base

=972

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What is the equation of a line that passes through the points (3, 6) and (8, 4) in slope intercept form?

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Answer:

$y=-\frac{2}{5}x +8.4$

Step-by-step explanation:

Gradient

$m =\frac{y-y1}{x-x1}$

$m = \frac{6-4}{3-8}$

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3 years ago

What is the length of the hypotenuse of the triangle? triangle A B C. Side A C is 7 centimeters and side B C is 3 centimeters. H

Maksim231197 [3]

Answer: √58 cm or 7.62 cm

Step-by-step explanation:

The Pythagorean Theorem is a²+b²=c². Since we are given the lengths of a and b, we can plug them into this formula to find the length of the hypotenuse.

7²+3²=c²

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3 years ago

David will spend at most $39 on gifts. So far, he has spent $22. What are the possible additional amounts he will spend? Use c f

iren2701 [21]

Answer:

$c\leq \$17$

Step-by-step explanation:

Let

c -----> the additional amount (in dollars) David will spend

we know that

The word " at most" in this context means "less than or equal to"

The amount David has spent plus possible additional amounts he will spend must be less than or equal to $39

The inequality that represent this situation is

$22+c\leq 39$

solve for c

subtract 22 both sides

$c\leq 39-22$

$c\leq \$17$

The maximum amount he could spend is $17

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3 years ago