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worty [1.4K]
3 years ago
15

A quick quiz consists of a multiple-choice question with 4 possible answers followed by a multiple-choice question with 3 possib

le answers. If both questions are answered with random guesses, find the probability that both responses are correct.
Mathematics
1 answer:
olga55 [171]3 years ago
7 0

Answer:

0.0825

Step-by-step explanation:

1/4x1/3=0.0825

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A triangle has an angle that measures 90°. The other two angles are in a ratio of 2:7. What are the measures of those two angles
marin [14]

Answer:

70° and 20°

let the other 2 angles be 7x and 2x

90+7x+2x=180

9x=180-90

x=90/9

x=10

7x=7x10

70

2x=2×10

2p

3 0
2 years ago
Need help please !!!!!!
11Alexandr11 [23.1K]
A perfect square must be hidden within all of those radicands in order to simplify them down to what the answer is.  \sqrt{192}= \sqrt{64*3}= 8\sqrt{3}.  \sqrt{80}= \sqrt{16*5}=4 \sqrt{5}.  \sqrt{12288}= \sqrt{4096*3}=64 \sqrt{3}.  The rules for adding radicals is that the index has to be the same (all of our indexes are 2 since we have square roots), and the radicands have to be the same.  In other words, we cannot add the square root of 4 to the square root of 5.  They either both have to be 4 or they both have to be 5.  So here's what we have thus far: 8 \sqrt{3}+4 \sqrt{5}+64 \sqrt{3}.  We can add 8 \sqrt{3} and 64 \sqrt{3} to get 72 \sqrt{3}.  That means as far as our answer goes, A = 72 and B = 4, or (72, 4), choice a.
5 0
3 years ago
A price of a cake is c pounds . The total cost of buying 20 cakes is tpuonds. Write a formula for t in terms of c
pochemuha
For a single cake: c pounds.
for 20 cakes: t poucnds.
Thus, 20c=t
t=20c
7 0
3 years ago
A truck can be rented from Company A for $120 a day plus $0.80 per mile. Company B charges $50 a day plus $0.90 per mile to rent
Jlenok [28]

Answer:

700 miles driven in a day

Step-by-step explanation:

Create an equation to represent the situation, where x is the number of miles.

0.8x + 120 = 0.9x + 50

Solve for x:

120 = 0.1x + 50

70 = 0.1x

700 = x

So, the rental costs will be the same at 700 miles driven in a day.

4 0
3 years ago
Read 2 more answers
Find the distance<br> between the points:<br> (-5, 7) and (4, -2)
bonufazy [111]

Answer:

d = 9√2

Step-by-step explanation:

d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}\\\\d=\sqrt{\left(4-\left(-5\right)\right)^2+\left(-2-7\right)^2}\\\\d=\sqrt{\left(4+5\right)^2+\left(-2-7\right)^2}\\\\d=\sqrt{9^2+9^2}\\\\\mathrm{Add\:similar\:elements:}\:9^2+9^2=9^2\times\:2\\\\=\sqrt{9^2\times\:2}\\\\=\sqrt{2}\sqrt{9^2}\\\\=9\sqrt{2}

7 0
3 years ago
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