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2 years ago

15

21. The area of a triangle with a base of 12 cm and a height of 9.6 cm

1 answer:

Nastasia [14]2 years ago

4 0

The equation for area of a triangle is A= 1/2bh so a=1/2(12cm)(9.6cm)

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FOR BRAINLIEST ANSWER THIS ASAP

mel-nik [20]

Answer:

-3x + y = -14

Step-by-step explanation:

m = 3/1 = 3

1 = 15 + b

b = -14

Y = 3x - 14

-3x + y = -14

5 0

2 years ago

SOMEONE PLEASE HELP ME WITH THIS ASAP!

bonufazy [111]

Answer:

y=20

Step-by-step explanation:

0.6(y-10)=6

0.6y-6=6

0.6y=6+6

0.6y=12

y=12/0.6

y=20

the mistake is added 10 to both sides

6 0

3 years ago

Analyze the diagram below and complete the instructions that follow. Find a, b, and c.

ahrayia [7]

Answer:

<u>The correct answer is the letter C. </u>

Step-by-step explanation:

We can use the following trigonometric identity:

$cos(60)=\frac{6}{b}$ (1)

$cos(45)=\frac{c}{b}$ (2)

Solving each equation by b and equaling we have:

$\frac{6}{cos(60)}=\frac{c}{cos(45)}$

$\frac{6}{cos(60)}=\frac{c}{cos(45)}$

Let's recall that:

$cos(45)=\frac{1}{\sqrt{2}}$

$cos(60)=\frac{1}{2}$

Then we have:

$c=\frac{cos(45)*6}{cos(60)}$

$c=\frac{2*6}{\sqrt{2}}$

$c=\frac{12}{\sqrt{2}}$

$c=6\sqrt{2}$

Using equation (1) we can find b.

$cos(60)=\frac{6}{b}$

$b=12$

Finally, we can find a using the next equation:

$tan(60)=\frac{a}{6}$

$a=6*tan(60)$

$a=6\sqrt{3}$

<u>Therefore, the correct answer is the letter C. </u>

I hope it helps you!

5 0

2 years ago

Let the correct answer

grigory [225]

Answer:

c i think sorry if i get it wrong

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Need help asap!!!!<br> Here's a screenshot:

Anna007 [38]

Answer:

C

Step-by-step explanation:

7 0

2 years ago