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2 years ago

15

Find the area

2 answers:

Kitty [74]2 years ago

7 0

Answer: 54 cm^2

Step-by-step explanation:

The area of a triangle is base*height/2.

To find the missing side of this triangle we can use pythagorean theroem. Let the unknown side = x

15^2 = 12^2+x^2

225 = 144+x^2

x^2 = 81

x = 9

Area = BH/2

Area = 9*12/2

Area = 54 cm^2

Ilia_Sergeevich [38]2 years ago

4 0

Answer:

180

Step-by-step explanation:

sorry if im wrong but it should be

15x12=180

thats how we did it

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3(-4n - 9) = 21 plc solve

erma4kov [3.2K]

<h3>Answer:</h3>

$\huge{\boxed{n=-4}}$

<h3>Explanation:</h3>

$\begin{array}{cc}\begin{flushright}\text{Divide both sides of the equation by 3.}\end{flushright}&\begin{flushleft}-4n-9=7\end{flushleft}\\\begin{flushright}\text{Add 9 on both sides.}\end{flushright}&\begin{flushleft}-4n=16\end{flushleft}\\\begin{flushright}\text{Divide both sides by -4.}\end{flushrigh}&n=-4\end{array}$

7 0

4 years ago

Read 2 more answers

Solve the equation for x

DaniilM [7]

2x+34 = 4(x+5)
2x+34 = 4x+20
-2x = - 14
x = 7

3 0

4 years ago

Given the following formula solve for a <br><br>s = a+b+c/2

Hatshy [7]

Answer:

$a=2s-b-c$

Step-by-step explanation:

Given formula:

$s=\frac{a+b+c}{2}$

To solve for $a$

In order to solve for $a$ we will try to isolate $a$ on one side of the equation.

Steps to isolate $a$ .

1) Multiplying both sides by $2$ to remove fractions.

$2\times s=2\times \frac{a+b+c}{2}$

$2s=a+b+c$

2) Subtracting both sides by $b$

$2s-b=a+b-b+c$

$2s-b=a+c$

3) Subtracting both sides by $c$

$2s-b-c=a+c-c$

$2s-b-c=a$

Thus, we successfully isolated $a$ on one side. The formula for $a$ can be given as:

∴ $a=2s-b-c$

5 0

4 years ago

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of

Sophie [7]

Answer:

Probability that both cans were regular soda = $\frac{1}{11}$

Step-by-step explanation:

Probability = $\frac{Desired outcome}{Total possible outcomes}$

We are given 12 total number of cans; 4 cans have been accidentally filled with diet soda.

Probability that first can is a regular soda:

Outcome that first can is a regular soda will give us the number of regular soda available which are 4

Using formula of probability

Total possible outcomes are, n(total) = 12

Desired outcome: 4 (cans of regular soda)

P(1st can) = $\frac{4}{12}$ = $\frac{1}{3}$

Probability that 2nd can is a regular soda:

<em>As we have already taken a can of regular soda from the pack, the total soda in the pack now 11 and the regular soda left are 3.</em>

Total possible outcomes are, n(total) = 11

Desired outcome: 3 (cans of regular soda as one has already been taken)

P(2nd can) = $\frac{3}{11}$

Probability that both cans are regular soda:

P(both) = P(1st can) × P(2nd can)

= $\frac{1}{3} * \frac{3}{11}$

= $\frac{1}{11}$

3 0

4 years ago

Read 2 more answers

Help me..............

Virty [35]

The correct answer would be (C.) x>90

3 0

4 years ago