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2 years ago

An engineering student answered 58 questions correctly on a 100-question trigonometry test.

1 answer:

6 0

If you are trying to find the percentage he received: 58/100

Total correct divided by total questions.

You get .58 or

58% by moving the decimal to spaces to the right.

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<img src="https://tex.z-dn.net/?f=%28%20-%20x%20%2B%203%29%20-%20%284x%20-%2010%29" id="TexFormula1" title="( - x + 3) - (4x - 1

VladimirAG [237]

Answer:

-5x+13 given (-x+3)-(4x-10)

Answer:-5x+13

Step-by-step explanation:

We are going to distribute to get rid of the ( ):

-x+3-4x+10

Pair up like terms:

-x-4x+3+10

Combine the like terms:

-5x+13

5 0

3 years ago

Read 2 more answers

Start time: 3:30 PM End time: 7:00 PM Elapsed time:

JulijaS [17]

Answer:

3hr 30min

Step-by-step explanation:

3hr 30min

5 0

3 years ago

A certain television is advertised as a 53-inch TV (the diagonal length). If the width of

zhenek [66]

The TV is 45 inches tall.

Step-by-step explanation:

The diagonal length of television = 53 inches

Width of TV = 28 inches

As TV is in rectangular or square shape, a diagonal will form a right triangle

Where,

Diagonal = hypotenuse = c = 53 inches

Width = base = b = 28 inches

Length = perpendicular = a

we will use pythagorean theorem to find the length.

$a^2+b^2=c^2\\a^2+(28)^2=(53)^2\\a^2+784=2809\\a^2=2809-784\\a^2=2025$

Taking square root on both sides

$\sqrt{a^2}=\sqrt{2025}\\a=45$

The TV is 45 inches tall.

Keywords: triangle, square root

Learn more about square root at:

#LearnwithBrainly

6 0

3 years ago

The statement today the dollar is worth 45 cents describe

Aneli [31]

This statement is false. The dollar is worth 100 cents.

Hope this helps :)

4 0

3 years ago

Y * x = 20 y + x = 9 what numbers are y and x equal to?

Ksivusya [100]

$y = 9 - x$
Substitute into
$y \times x = 20 \\ (9 - x) \times x = 20 \\ { - x}^{2} + 9x = 20 \\ {x}^{2} - 9x + 20 = 0 \\ (x - 5)(x -4) = 0 \\ x = 5 \: or \: x = 4$
When x = 5,
$y = 9 - 5 \\ y = 4$
When x = 4,
$y = 9 - 4 \\ y = 5$

x = 5, y = 4
x = 4, y = 5

Hope this helps. - M

4 0

2 years ago