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tino4ka555 [31]
2 years ago
15

Carolyn answered 23 questions correctly for a score of 92%. How many questions were on the test?

Mathematics
1 answer:
Alla [95]2 years ago
6 0

Answer:

25*0.92= 23 so she answered 23 question from 25 questions

Step-by-step explanation:

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Which are the solutions of x2 = –7x – 8?
vovangra [49]

Answer:

The solutions are:

x_1=\frac{-7+\sqrt{17}}{2}     x_2=\frac{-7-\sqrt{17}}{2}

Step-by-step explanation:

We have the following quadratic equation

x^2 = -7x - 8

We can rewrite the equation as follows

x^2+7x + 8=0

Now we use the quadratic formula to solve the equation

For an equation of the form ax ^ 2 + bx + c = 0 the quadratic formula is:

x=\frac{-b\±\sqrt{b^2-4ac}}{2a}

In this case:

a=1,\ b=7,\ c=8

Then:

x=\frac{-7\±\sqrt{7^2-4(1)(8)}}{2(1)}

x=\frac{-7\±\sqrt{49-32}}{2}

x=\frac{-7\±\sqrt{17}}{2}

x_1=\frac{-7+\sqrt{17}}{2}

x_2=\frac{-7-\sqrt{17}}{2}

7 0
3 years ago
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Convert 20 mile per hour to kilometers per liter
ElenaW [278]

Fuel Consumption Convert

≈ 8.5 kilometers per liter

7 0
3 years ago
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Please help me!? Explain why i got this wrong ? how to do it right?
IgorLugansk [536]
Y - y1 = m(x - x1)
slope(m) = -3/7
(5,8)...x1 = 5 and y1 = 8
now we sub
y - 8 = -3/7(x - 5) <===
3 0
4 years ago
At your full-service. 500 room hotel, typically, 1/4 of the guests will request
monitta
B. 875
1/4 of 500 is 125. So 125 is how much they pay for day approx. 125 times the seven days will be 875.
5 0
3 years ago
I did it wrong the first time
kvv77 [185]

Answer:

4.6

Step-by-step explanation:

For this question, we need the opposite side and have the opposite

with that said, out of SOH, CAH, TOA it's fastest to use TOA

tan(75)=17/x

17/(tan(75))=x

x= 4.555136271

which rounds to

4.6

4 0
3 years ago
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