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IrinaVladis [17]
2 years ago
9

Please answer and explain... will mark brainliest!! find the area.

Mathematics
1 answer:
dusya [7]2 years ago
6 0

Answer:

12. 1144.8668 (round if needed) 13. 52.5

Step-by-step explanation:

Area of a triangle: A = \frac{1}{2} x b x h

Area of a rectangle: A = w x h

A = area b = base h = height w = width

12. Inside of the rectangle are two triangles. Use the pythagorean theorem to find the height of the triangles.

a^{2} +b^{2} =c^{2}

Substitute 32 for b and 48 for c

a^{2}+32^{2}=48^{2}

Square the numbers

a^{2}+1024=2304

Subtract 1024 from each side

a^{2}=1280

Take the square root from each side

a = 35.777

a is the measurement of the height h

Use the formula to find the area of the rectangle

A = w x h

Substitute 32 for w and 35.777 for h

A = 32 x 35.777

Solve

A = 1144.8668

Round if needed

13. This is an irregular polygon. Separate the the shape into regular polygons. A triangle and a rectangle.

Use the formula to find the area of the triangle.

A = \frac{1}{2} x b x h

Substitute 15 for b and 1 for h

A = \frac{1}{2} x 15 x 1

Solve

A = 7.5

Use the formula to find the area of the rectangle.

A = w x h

Substitute 15 for w and 3 for h

A = 15 x 3

Solve

A = 45

Add the two areas together to get the total area of the irregular polygon

A = 7.5 + 45

Solve

A = 52.5

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Question 2
S_A_V [24]

Answer: B -8/7x+11/7

Step-by-step explanation:

First find the slope using teh formule y_{2}-y_1\\x_2-x_1 which is teh formula for slope in this case the slope would be (-8/7) then pick a pair of points in this case we will use (4,-3) plug in the slope and the coordinate pair into the intercept formula (y=mx+b) so it would look like -3=-8/7(4)+b then solve for b so the answer be 8/7x+11/7

7 0
3 years ago
( Will give Brainlies) Please Helpp
mario62 [17]

Answer:

15 or below

Step-by-step explanation:

10+10+8+8 = 36

51-36 = 15

Less than or equal to = 15 or below

4 0
3 years ago
Triangle ABC has side lengths:
Harlamova29_29 [7]

The length of HJ is 3.5 cm

<h3>What is Congruency?</h3>

Two geometric figures are said to be congruent, or to be in the relation of congruence, if it is possible to superpose one of them on the other so that they coincide throughout.

Given:

AB = 3.5 cm, BC = 2.4 cm, and AC = 4.2 cm

As, ΔABC ≅ ΔHJK

So,

AB = HJ

BC = JK

AC = HK

Thus, HJ= AB = 3.5 cm

Learn more about this concept here:

brainly.com/question/4229988

#SPJ1

8 0
2 years ago
An amusement park charges a $12 parking fee plus 25 per person. What is the total cost for 32 people?​
icang [17]

Answer:

The total amount for 32 people is 15.36

Step-by-step explanation:

we know that for 25 people is $12 so we need to find how much it would be for one person. you would need to divide $12 / 25. from this you would get 0.48, so for one person it's 48 cents. next you're going to subtract 25 from 32, this leaves you with seven people who aren't in a group of 25. you then multiply 7 × this equals to 3.36, add 3.36 to $12 and you'll get your total 15.36.

7 0
2 years ago
Mr. Sands drove 15 miles to the airport. When he was 3/5 of the way, he stopped for gasoline. How far did Mr. Sands drive before
irinina [24]

Answer:

9 miles

Step-by-step explanation:

15/5=3

so 3x3= 9 miles

3 0
3 years ago
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