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Assoli18 [71]
4 years ago
13

Only answer if yk it ! correct answer ill mark as brainliest!

Mathematics
1 answer:
Alex787 [66]4 years ago
4 0

Answer:

x=-5, x=-9

Step-by-step explanation:

x^2+45=-14x

add 14x to both sides

x^2+45+14x=-14x+14x

simplify

x^2+14x+45=0

solve using quadratic formula

a=1, b-14, c=45

x=-14±√14^2-4·1·45/2·1

(solve using a calculator or PEMDAS)

(solve for both + and -)

x=-5, x=-9

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Scale factor=0.75 is enlarge , reduce , or preserve ?
zvonat [6]

Answer:

Reduce

Step-by-step explanation:

It will reduce because the factor is less than 1 so it cannot enlarge and it is not the same as the 1 so it cannot preserve.

6 0
3 years ago
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4
VLD [36.1K]
Answer is D. 81

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3 years ago
write a system of equations for the problem, and then solve the system. if a plane can travel 340 miles per hour with the wind o
BlackZzzverrR [31]

Answer:

w = 40 miles per hour

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Step-by-step explanation:

We add w with the wind and subtract w against the wind

r+w = 340 miles per hour

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Add the two equations together to eliminate w

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Divide by 2

r = 300 miles per hour without the wind

Now find w

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300 + w = 340

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7 0
4 years ago
Find the gradient of the line segment between the points (-4,1) and (2,4). Give your answer in its simplest form.
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<h2>\frac{1}{2}</h2>

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B(2,4)---------->( x2, y2)

Now,

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\frac{y2 - y1}{x2 - x1}

\frac{4 - 1}{2 - ( - 4)}

\frac{3}{2 + 4}

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Hope this helps...

Good luck on your assignment...

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