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natulia [17]
3 years ago
13

A wooden board is leaning against a house

Mathematics
1 answer:
kobusy [5.1K]3 years ago
6 0

Answer:

24.4 feet

Explanation:

Let x be the length of the wooden board as shown in the diagram.

Using trigonometry ratio, we can write

\cos(35)=\frac{20}{x}

\implies0.819= \frac{20}{x}

cross multiplying we get:

0.819 \times x = 20

Diving through by 0.819, we obtain

x = 24.42

To the nearest tenth, x=24.4 feet.

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Negative five times a number, x, decreased by the product of two and the quantity of x increased by three is less than or equal
astra-53 [7]

Left Side

if x = a number

five times a number means 5 · a number = 5 · x

add a negative sign; -5·x

simplify; you don't need the multiplication symbol; -5x

minus 2·x = -2x

plus 3 = +3

-5n-2x+3

Sign

less than or equal to = ≤

Right Side

triple of x = 3·x = 3x

4 minus triple of x = 4-3x

4-3x

The final inequality is -5x-2x+3 ≤ 4-3x

♡ Hope this helps! ♡

❀ 0ranges ❀

4 0
3 years ago
Simplify -2x^3y+xy^2
zheka24 [161]

Answer:

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Step-by-step explanation:

8 0
3 years ago
What number times itself is 1,225?
Marrrta [24]

Answer:

35

Step-by-step explanation:

Multiply 35 x 35 together

Please mark brainliest

7 0
2 years ago
Read 2 more answers
Someone help a friend out please on algebra?
IgorC [24]

Answer:

b. second answer.

Step-by-step explanation:

I think b.

I replaced the x in x-2 with 2, and the x in x+3 with -3, and got zero on both. 0x0=0

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5 0
2 years ago
The fee to check luggage with anew arline is based on the weightof each bag. Brett paid $7.14 tocheck a 42-pound bag. Howmuch wi
rodikova [14]

$10.71

Explanation

Step 1

you can easily solve this by using a rule of three.

Let

x represents the money Eileen will pay if her bag weighs 63 pounds

the proportion is the same

then

\frac{7.14}{42}=\frac{x}{63}

Step 2

solve for x

\begin{gathered} \frac{7.14}{42}=\frac{x}{63} \\ 63\cdot7.14=42x \\ x=\frac{63\cdot7.14}{42} \\ x=\frac{449.82}{42} \\ x=10.71 \\  \end{gathered}

I hope this helps you

5 0
11 months ago
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