4 years ago

Find answers to 7 and 8 I don't know what to do for them

Mathematics

1 answer:

mel-nik [20]4 years ago

4 0

It might mean something like f(x) = 1/2 on 7. Something like that?

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In a certain manufacturing process, it is known that, on average, 1 in every 100 items is defective.

Rashid [163]

Answer:

A. 0.009899

B. 0.005624

Step-by-step explanation:

Data:

Let the probability that an item is defective = $\frac{1}{100}$

The probability that the item is not defective = $\frac{99}{100}$

The probability that the fifth item is defective = $\frac{1}{100}* \frac{98}{99}$

= 0.009899

Probability that one in 5 items is defective = 0.005624

5 0

4 years ago

Five times the sum of number and 27 is greater than or equal to six times the sum of that number and 26. What is the

raketka [301]

Answer:

$x \geq -21$

Step-by-step explanation:

Let the number be x.

Translating the word problem into an algebraic equation, we have;

$5(x + 27) \geq 6(x + 26)$

Opening the bracket, we have;

$5x + 135 \geq 6x + 156$

Collecting like terms, we have;

$6x - 5x \geq 135 - 156$

$x \geq -21$

8 0

3 years ago

Sally and her mom were making cookies to hand out to her neighbors for the holidays. Their first batch made 26 cookies, their se

VARVARA [1.3K]

Answer:

The mean number of cookies was 33.5

Step-by-step explanation:

Add the values of the terms and divide by the number of terms.

So...

26 + 38 + 45 + 25 = 134

134 ÷ 4 = 33.5

6 0

3 years ago

A prism, whose area of cross-section is 55 cm, has a height of 21 cm. Find the

erma4kov [3.2K]

Step-by-step explanation:

volume = crossectional area×height

55×21= 1155cm³

6 0

3 years ago

Factor completely.

lidiya [134]

$9 \times {x}^{2} - 25 \\ = 9 {x}^{2} - 25 \\ = (3x - 5)(3x + 5)$

Answer is D.

Hope this helps. - M

4 0

4 years ago

Read 2 more answers