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VikaD [51]
3 years ago
8

Which phrase represents this expression? 42−3×8

Mathematics
1 answer:
iVinArrow [24]3 years ago
3 0

Answer: C

Step-by-step explanation:

Let’s establish some key terms here:

Subtraction = <u>Difference</u>

Multiplication = <u>Product</u>

Division = <u>Quotient</u>

Addition = <u>Sum</u>

First, we know that there is subtraction and multiplication is the problem, so we will be using the words difference and product.

The only answer that uses both these words is answer C.

Either way, let’s check it.

Answer C is “the difference of 42 and the product of 3 and 8”. Let’s break it down.

We see the word “product“ here, talking about the 3 and the 8. In the original equation, the 3 and 8 were multiplied, so this does make sense.

We also see the word “difference”, talking about the 42 and the product (of 3 and 8). These were subtracted by each other in the original equation, so it makes sense.

Therefore, the answer is C: the difference of 42 and the product of 3 and 8.

Hope this helps! :)

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An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a
sasho [114]

Answer:

Step-by-step explanation:

Use the normal approximation to the binomial distribution

mean µ = np

standard deviation σ = √npq

Where,

n is sample size

p is probability of success.

q is probability of failure

Given that

q = 6% =0.06

Then, p = 1-q = 1-0.06 = 0.94

Therefore:

µ = pn

µ = 0.94n

Also

σ = √npq

σ = √(n)(0.94)(0.06)

σ = √(.0564n)

Using z-scores:

z = (x — µ )/σ

Using the data above

1.645 = (160 — 0.94n)/√(0.0564n)

Cross multiply

1.645√0.0564n = 160—0.94n

Square both sides

1.645²× 0.0564n = (160-0.94n)

0.153n=25600— 300.8n + 0.8836n²

0.8836n²-300.8n-0.153n +25600=0

0.8836n² — 300.953n + 25600 = 0

Using quadratic formula method.

a = 0.8836 b = -300.953 c = 25600

n = [-b±√(b²-4ac)]/2a

n = [--300.953±√((-300.953)²-4×0.8836×25600)] / (2 × 0.8836)

n = [300.953±√(92.07)]/1.7672

n = (300.953±9.6)/1.762

n = (300.953-9.6)/1.762

n = 168.22

Or

n = (300953+9.6)/1.762

n = 176.25

The maximum number of reservation is approximately 168.

6 0
4 years ago
What are some tools you could select to measure lenght
liubo4ka [24]
Measuring tape , ruler, the possibilities are endless. A string, a rope, anything that you know its length, like a 1 meter rope can help measure a 10 meter garden.
7 0
3 years ago
3. According to the U.S. census website (www.census.gov), based on the U.S. population in 2010, the probability that a randomly
Oksi-84 [34.3K]

Answer:

a. 0.017

b. 0.013

c. 0.021

Step-by-step explanation:

Let p be the probability that a randomly selected man is 65 or older

And q be the probability that a randomly selected woman is 65 or older

Then p=0.114 and q=0.146

Using the multiplication rule for independent events:

a. If a man is selected at random and a woman is selected at random, the probability that both people selected are 65 or older is p × q = 0.114 × 0.146 ≈ 0.017

b. If two men are selected at random, the probability that both of them are 65 or older is p × p = 0.114 × 0.114 ≈ 0.013

c. If two women are selected at random, the probability that neither of them is 65 or older is q × q = 0.146 × 0.146 ≈ 0.021

7 0
4 years ago
A cylinder has a diameter of 10 inches and a height four times its radius. What is its volume?
Anit [1.1K]

Answer:

500π ≈ 1570.796

Step-by-step explanation:

diameter = 10

radius = diameter / 2 = 10 / 2 = 5

height = 4 * radius = 4 * 5 = 20

volume = π * height * (radius)² = π * 20 * (5)² = 500π ≈ 1570.796

3 0
2 years ago
Read 2 more answers
The population in the town increased 5000 million per year. if the population is 120000 three years ago.. what is the population
gogolik [260]

Answer:

The population will be 135000

5000 x 3 = 15000

Then you add 120000 with 15000

6 0
3 years ago
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