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3 years ago

Can anyone answer these for me please?

Mathematics

2 answers:

fiasKO [112]3 years ago

8 0

(2) is 1
because of pemdas

yuradex [85]3 years ago

4 0

2. 16 ÷ (10 - 6)²
16 ÷ 4²
16 ÷ 16
1

3. 5² - (5 - 7)(2)
25 - (-2)(2)
25 - (-4)
25 + 4
29

4. 3(-3) + (7 + 4)
-9 + 11
2

5. 3³/(5 - 2) - (4 - 2)²/2
27/3 - (2)²/2
9 - 4/2
9 - 2
5

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What is the equation of a line passing through the points (-3,<br> -2) and (2, 0)?

Lostsunrise [7]

Answer:

$y=0.400x+-0.800$

Step-by-step explanation:

Given the following question:

point A = (-3, -2)
point B = (2, 0)

To write the equation of the line that passes through two points we have to write the points in slope intercept form.

Formula for slope intercept:

$y=mx+b$

M is equal to the slope of the two points, so first we need to fine the slope of the two points.

$(-3,-2)=(x1,y1)$
$(2,0)=(x2,y2)$

$m=\frac{y2-y1}{x2-x1}$
$m=\frac{0--2}{2--3} =\frac{2}{5}$
$m=\frac{2}{5} =0.400$

$y=mx+b$
$y=-2$
$m=0.400$
$x=-3$
$-2=0.400(-3)+b$
$0.400\times-3=-1.20$
$-2+1.2=-0.800$
$b=-0.800$

$y=0.400x+-0.800$

Hope this helps.

7 0

2 years ago

Solve the following by completing the square :<br> x2 - 6x + 7 = 0<br>

Arisa [49]

Answer:

Step-by-step explanation:

5 0

3 years ago

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The legs of a right triangle are 18 centimeters and 80 centimeters long. What is the length of the hypotenuse

Brilliant_brown [7]

$a^2 + b^2 = c^2\\\\18^2 + 80^2 = c^2\\\\6724 = c^2\\\\c = \sqrt{6724}\\\\ c = 82$

The hypotenuse is 82 centimeters long.

4 0

3 years ago

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Factorize completely <br> 81k^2 - m^2

Genrish500 [490]

81k^2 - m^2 factors to

(9k + m)(9k - m)

Prove this by FOILing.

First - 81k^2

Outer - (-9km)

Inner - 9km

Last - (-m^2)

Put it into equation form

81k^2 - 9km + 9km - m^2

And combine terms to get the original equation,

81k^2 - m^2.

⭐ Answered by Hyperrspace (Ace) ⭐

⭐ Brainliest would be appreciated, I'm trying to reach genius! ⭐

⭐ If you have questions, leave a comment, I'm happy to help! ⭐

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3 years ago

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I'm having alot of trouble with this one.

Daniel [21]

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