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3 years ago

14

A quality-control center finds that 2 out of 250 toy trains are defective. How many trains would they expect to be defective in

a batch of 10,000?
A.80

B.40

C.250

D.125

1 answer:

solmaris [256]3 years ago

5 0

Its A. 10,000 divided by 250 is 40. Then multiply 40 by 2 and you get 80

10,000 / 250 = 40
40 * 2 = 80
80= A.

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Step-by-step explanation:

That is (1032 * 100) / 860 %

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A yearly subscription to the monthly magazine cost $41.40. The regular news stand price is $4.25 per issue. How much is saved pe

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4 years ago

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3 years ago

Simplify the numerical expression 5.75 - 1/2 (20÷2.5) ÷ 2+6

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3 years ago

Which two points are on the graph of M(a) = - 3/4a-12?

sertanlavr [38]

Answer:

(-16, 0) and (0,-12) are exactly two points on the graph of the given equation.

Step-by-step explanation:

Here, the given expression is : $M(a) = -\frac{3}{4} a-12$

Here, let M(a) = b

⇒The equation becomes $b = -\frac{3}{4} a-12$

Now, check for all the given points for (a,b)

<u>1) FOR (-9,0)</u>

$RHS is -\frac{3}{4} (-9)-12 = -5.25 \neq 0$

Hence, (-9,0) is NOT on the graph.

<u>2) FOR (-16,0)</u>

Here, LHS = b = 0

and $RHS = -\frac{3}{4} (-16)-12 = 12-12 = 0$

Hence, LHS = RHS = 0 So, (-16,0) is on the graph.

<u>3) FOR (0,12)</u>

Here, LHS = b = 12

$RHS is -\frac{3}{4} (0)-12 = -12 \neq 12$

Hence, (0,12) is NOT on the graph.

<u>4) FOR (0,-12)</u>

Here, LHS = b = -12

$RHS is -\frac{3}{4} (0)-12 = -12$

and LHS = RHS = -12

Hence, (0,-12) is on the graph.

Hence, (-16, 0) and (0,-12) are exactly two points on the graph of the given equation.

6 0

3 years ago