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Nikitich [7]
2 years ago
14

On Monday, 56 biographies were

Mathematics
1 answer:
Dafna11 [192]2 years ago
8 0
Books=1/2x-8
56=1/2x-8
X=(56+8)÷1/2
X=64 ÷ 1/2
X=128
128 books
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May has 31 days. How would the experimental probability be affected if someone mistakenly used 30 days to calculate the experime
Mars2501 [29]
<span>20/31 is greater than 19/30 so using fewer days in the month produces a greater probability i think so 
</span>

3 0
3 years ago
Han says that you can wrap a 5-foot rope around a wheel with a 2-foot diameter because is less than pi. Do you agree with Han? C
madam [21]

Given :

Han says that we can wrap a 5 foot rope around a wheel with a 2 foot rope.

To Find :

It this true or false.

Solution :

Radius of wheel, r = 1 foot.

Circumference of wheel is given by :

C = 2\pi r\\\\C = 2\times 3.14\times 1\\\\C = 6.28 \ foot

Since, circumference is greater than 5 foot, therefore, we cannot wrap a  5-foot rope around a wheel with a 2-foot diameter.

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3 0
3 years ago
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The sum of 5 consecutive even numbers is 100. What is the first number in this sequence?
gayaneshka [121]

Answer:

16

Step-by-step explanation:

Let's represent this with an equation, where x is the first number. The next number must be x+2, because it has to be even, not x+1, and the rest continue the same way:

x+(x+2)+(x+4)+(x+6)+(x+8) = 100

Solve for x.

5x+20 = 100

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4 0
3 years ago
Hitung jarak di antara titik P(7, 1) dengan titik Q(7, 8) ​
MaRussiya [10]

Answer:

7 units

Step-by-step explanation:

Distance between 2 points

=\sqrt{(y1 - y2)^{2}  + (x1 - x2) {}^{2} }

Thus, distance PQ

=\sqrt{(8 - 1)^{2}  + (7 - 7)^{2} }  \\ = \sqrt{7^{2} }  \\  = 7

Or you could simply take 8-1= 7 since both points have the same x-coordinate. Thus, PQ is a vertical line and the distance between them is due to the difference in their y-coordinate.

5 0
3 years ago
Assume equal likelihood for the birth of boys and girls. What is the probability that a four-child family chosen at random will
garik1379 [7]
Each child has a 50% chance to be a girl and 50%chance to be a boy so with 4 children the probability is
\frac{1}{2}  \times  \frac{1}{2}  \times  \frac{1}{2} \times  \frac{1}{2}  =  \frac{1}{16}
7 0
4 years ago
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