3 years ago

I need help fast pls

Mathematics

1 answer:

Alecsey [184]3 years ago

6 0

Answer:

positive numbers show deposits so it'd be A! $126.40

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Identify the solution(s) of <img src="https://tex.z-dn.net/?f=y%20%5E%7B2%7D%20%20-%202y%20-%208%20%3D%207" id="TexFormula1"

Burka [1]

Answer:

y= 5 and -3

Step-by-step explanation:

subtract 7 from both sides to get y^2-2y-15=0

factor the equation to get (y-5)(y+3)=0

add five on both sides to get y=5 and subtract 3 on both sides to get y=-3

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3 years ago

Find the slope of the line that contains the points (7, 3) and (7, 9). Round to 2 decimal places.

Lunna [17]

answer = not define

Step-by-step explanation:

slope = (y2- y1) / (x2- x1)

= 9-3 / 7-7

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= not define

I think points are wrong

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3 years ago

Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

BabaBlast [244]

Answer:

Step-by-step explanation:

We want to solve the equation:

$x^2+2x+7=0$

Using the quadratic formula. The quadratic formula is given by:

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

In this case, a = 1, b = 2, and c = 7.

Substitute:

$\displaystyle x=\frac{-(2)\pm\sqrt{(2)^2-4(1)(7)}}{2(1)}$

Evaluate:

$\displaystyle x=\frac{-2\pm\sqrt{-24}}{2}$

Simplify the square root:

$\sqrt{-24}=\sqrt{4\cdot 6\cdot -1}=\sqrt{4}\cdot\sqrt{6}\cdot\sqrt{-1}=2i\sqrt{6}$

Hence:

$\displaystyle x=\frac{-2\pm2i\sqrt{6}}{2}$

Simplify:

$\displaystyle x=-1\pm i\sqrt{6}$

Hence, our solutions are:

$\displaystyle x=\left\{-1+i\sqrt{6}, -1-i\sqrt{6}\right\}$

Our answer is C.

3 0

3 years ago

A customer deposits $1,000 in an account in which the interest is compounded annually. The table below shows the balances in the

Ierofanga [76]

Answer: Its A

A=1000(1.08)^t

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4 years ago

What number has the same value as 1 hundred 7 tens

Bond [772]

Answer:

A number that has the same value as 1 hundred and 7 tens would be

170

Step-by-step explanation:

5 0

4 years ago