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3 years ago

PLS HELP ASAP! WILL MARK BRAINLIEST sin ∠E = 20/21 20/29 21/29 21/20

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

7 0

21/20 D is correct :) ;)

MariettaO [177]3 years ago

5 0

D

.....bekwjsjskbdjdjwvdkdks

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If l = 60 inches, w = 65 inches, h = 50 inches, and t = 40 inches, counting the floor, what is the volume of the tent?

defon

Answer:

To find volume of a tent this would be your formula:

start by taking the base of the triangle on your tent typically located in the front

1/2 (height) (width) to get your area (DONT SKIP THIS STEP)

Then take your area you just calculated and do

(area) (length)

Let me give you an example:

in the picture below

height: 3 cm

length: 8 cm

Width: 12 cm

Next do your first formula:

1/2 (3)(12)= 18 cm

(Calculation of one face)

then your second:

(18)(8)= 144 $cm^3}$

Hopefully this guide helped you sorry i couldn't answer your question without a picture!

5 0

3 years ago

52 is what percent of 260

Nataly_w [17]

"is" means =
"what percent" can represent x
"of" is multiplying

so 52 = 260x
so divide 260 by both sides so
x = 52/260 = 0.2
and 0.2 = 20%

3 0

3 years ago

Solve the system of equations. −9y+4x−20=0−7y+16x−80=0\begin{aligned} &-9y+4x - 20=0 \\\\ &-7y+16x-80=0 \end{aligned}

gulaghasi [49]

Answer:

(x, y) = (5, 0)

Step-by-step explanation:

$\begin{aligned} &-9y+4x - 20=0 \\ &-7y+16x-80=0 \end{aligned}$

Subtract 4 times the first equation from the second:

(-7y +16x -80) -4(-9y +4x -20) = (0) -4(0)

29y = 0 . . . . . simplify

y = 0 . . . . . . . .divide by 29

4x -20 = 0 . . . . substitute 0 for y in the first equation

x -5 = 0 . . . . . .divide by 4

x = 5 . . . . . . . . add 5

The solution to this system is (x, y) = (5, 0).

7 0

3 years ago

What is the average rate of change of the function f(x)=20(14)xf(x)=20(14)x from x = 1 to x = 2? Enter your answer, as a decimal

notsponge [240]

$\bf slope = m = \cfrac{rise}{run} \implies 
\cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby 
\begin{array}{llll}
average~rate\\
of~change
\end{array}\\\\
-------------------------------\\\\
f(x)= 20(14)^x \qquad 
\begin{cases}
x_1=1\\
x_2=2
\end{cases}\implies \cfrac{f(2)-f(1)}{2-1}
\\\\\\
\cfrac{[20(14)^2]~~-~~[20(14)^1]}{1}\implies \cfrac{20\cdot 196~~-~~20\cdot 14}{1}
\\\\\\
\cfrac{3920~~-~~280}{1}\implies \cfrac{3640}{1}\implies 3640$

4 0

3 years ago

Read 2 more answers

A variable in the radicand of a radical expression _______________ represents a positive quantity. Always Sometimes Never

aliya0001 [1]

Sometimes

1. The radical expression $\sqrt[n]{}$ with even n requires <span>a variable with positive quantity. For example, if you have $\sqrt[4]{x^3}$ , then always $x^3\ge 0$ .
</span>

2. If you have radical expression $\sqrt[n]{}$ with odd n, ia variable may be arbitrary. For example, for $\sqrt[7]{x}$ you can consider all real x.

3 0

3 years ago