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oksano4ka [1.4K]
3 years ago
7

Bob is doing a quality test on machine bolts. He tested 24 bolts that he randomly picked and found that 5 were defective. Based

on Bob's results, what is the expected number of bolts that will be defective if he tests 840 bolts?
A.139
B.145
c.175
D.211
Mathematics
1 answer:
KatRina [158]3 years ago
8 0
C. 175
Explanation: 840/24 = 35 x 5 = 175
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Zina [86]

Answer:

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Step-by-step explanation:

<C = <B since this is an isosceles triangle.  We know this because AC = AB

<C = 15 so <ABC = 15

The sum of the angles of a triangle is 180

A + B+ C = 180

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Find the distance between the two points rounding to the nearest tenth (if necessary).
leonid [27]

Answer:

\boxed {\boxed {\sf d\approx 4.2}}

Step-by-step explanation:

The formula for distance is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2

Where (x₁, y) and (x₂, y₂) are the points.

We are given (-6, 6) and (-3, 3). If we match the value and its corresponding variable, we see that:

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d= \sqrt{ (-3 - -6)^2+(3-6)^2

Solve inside the parentheses.

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Solve the exponents.

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d= \sqrt{9+9

Add.

d= \sqrt18

d= 4.24264069

Round to the nearest tenth. The 4 in the hundredth place tells us to leave the 2 in the tenth place.

d \approx 4.2

The distance between the two points is apprximately <u>4.2</u>

4 0
2 years ago
Is it correct and we're do I put the decimal
Black_prince [1.1K]
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circle

1. area=π*R square

2.circumference=2πr

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1. curve surface area=4*π*R square

2. volume =4/3*π*R^3

8 0
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