All categories

3 years ago

PLEASE HELP I WILL MARK YOU BRAINLIEST FIND THE AREA OF NUMBER 3 AND 4

Mathematics

2 answers:

scoray [572]3 years ago

8 0

Answer:

3. 112.2 yd

4. 30m

Step-by-step explanation:

Number 3:

L × W (length × width) = A
18.7 × 6 = 112.2 yd

Number 4:

B × H (base × height) = A
6 × 5 = 30 m

I hope this helps!

sdas [7]3 years ago

8 0

Answer:

3. The formula to find the area of a rectangle is l * w. 18.7 * 6 = 112.2 yards^2.

4. The formula to find the area of a parallelogram is base * height. 6*5 = 30 m^2.

You might be interested in

Suppose that l lines are drawn through a circle and these lines form p points of intersection (involving exactly two lines at ea

zhenek [66]

Over which interval(s) is the function decreasing?

8 0

3 years ago

Fine length of BC on the following photo.

MrMuchimi

Answer:

$BC=4\sqrt{5}\ units$

Step-by-step explanation:

see the attached figure with letters to better understand the problem

step 1

In the right triangle ACD

Find the length side AC

Applying the Pythagorean Theorem

$AC^2=AD^2+DC^2$

substitute the given values

$AC^2=16^2+8^2$

$AC^2=320$

$AC=\sqrt{320}\ units$

simplify

$AC=8\sqrt{5}\ units$

step 2

In the right triangle ACD

Find the cosine of angle CAD

$cos(\angle CAD)=\frac{AD}{AC}$

substitute the given values

$cos(\angle CAD)=\frac{16}{8\sqrt{5}}$

$cos(\angle CAD)=\frac{2}{\sqrt{5}}$ ----> equation A

step 3

In the right triangle ABC

Find the cosine of angle BAC

$cos(\angle BAC)=\frac{AC}{AB}$

substitute the given values

$cos(\angle BAC)=\frac{8\sqrt{5}}{16+x}$ ----> equation B

step 4

Find the value of x

In this problem

$\angle CAD=\angle BAC$ ----> is the same angle

equate equation A and equation B

$\frac{8\sqrt{5}}{16+x}=\frac{2}{\sqrt{5}}$

solve for x

Multiply in cross

$(8\sqrt{5})(\sqrt{5})=(16+x)(2)\\\\40=32+2x\\\\2x=40-32\\\\2x=8\\\\x=4\ units$

$DB=4\ units$

step 5

Find the length of BC

In the right triangle BCD

Applying the Pythagorean Theorem

$BC^2=DC^2+DB^2$

substitute the given values

$BC^2=8^2+4^2$

$BC^2=80$

$BC=\sqrt{80}\ units$

simplify

$BC=4\sqrt{5}\ units$

7 0

3 years ago

Christais attending the county fair that charges a $12 entry fee. The entry fee includes 10 free rides, but any additional rides

ratelena [41]

Answer:

he saves 3 dollars. its not worth it.

Step-by-step explanation:

you divide 12 by ten getting you 1.2 which you subtract from 1.50 that then multiply that by 10

8 0

3 years ago

9x^2 - 8x - 1 = 0<br> What are the x intercepts?

sasho [114]

9x^2 - 8x - 1 = 0

(9x + 1(x - 1) = 0

x = -1/9 , 1

x intercepts are -1/9 and 1.

4 0

3 years ago

A charity is holding a raffle to raise money. There is one car worth $30,000 and five $100 gift cards being raffled off. Each ti

lesya [120]

30.000+100-5000*20=x(sum of profits)

8 0

3 years ago

Read 2 more answers