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3(x+y)+4(y+x)

Answers

Answer 1
Answer:

Answer:

7x+7y

Step-by-step explanation:

3x+3y+4y+4x

7x+7y

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Which fractions are equivalent to the fraction below? Check all that apply.
3/4 ??

Answers

Answer:

hi there !

The answer is "30/40"

because by dividing each nominator and denominator by "10" it gives 3/4

If w = 7a + 4b, which of the following equations is solved for a?

Answers

Answer: a= w - 4b/ 7

Step-by-step explanation:

Identify the independent and dependent variables in the following hypothesis: "People who exercise regularly are more likely to have normal or below normal weight." Exercise is the ________ variable and weight is the _________ variable

Answers

Exercise will be the independent variable while weight will be the dependent variable.

Nowadays most of us do exercise in order to burn extra calories, that in turn, reduce the weight of a person. Some exercises even increase the weight of a person.

What if we do not do the exercise?

Our weight will increase or will remain constant. In a few cases, it will decrease the weight.

So it is clear that weight depends on many factors. one of those factors is exercise.

So weight is the dependent variable while exercise will be an independent variable.

Therefore, exercise will be the independent variable while weight will be the dependent variable.

To get more about variables refer to the link,

brainly.com/question/1429012

Answer:

Independent

dependent

Step-by-step explanation:

The scenario illustrates that the weight for people who exercises regularly tends is normal or below normal. It means that the weight of a person depends on how much a person exercises i.e. if person exercises more the weight is reduced and if not then weight will be gained. Thus, exercise is the independent variable while weight is dependent variable.

* 9. Two fifths of what number is 120?
2/5

Answers

Answer:

300

Step-by-step explanation:

120 ÷ 2/5 = 300
Of = multiply
Let X represent the number we are looking for
2/5 x X=120
2/5X=120
Divide both sides by 2/5
X= 300
L

Wat does PAYE stands for?​

Answers

Answer:

P = Pay.

A = As.

Y = You.

E = Earned.

Step-by-step explanation:

PAYE Stands for pay as you earned.

A quality control inspector has drawn a sample of 15 light bulbs from a recent production lot. Suppose that 60% of the bulbs in the lot are defective. What is the expected value of the number of defective bulbs in the sample

Answers

Answer:

9

Step-by-step explanation:

Expected number of defective is given as :

N x P = np

Where = number of the sample drawn from the production lot

P= percentage of bulbs In The lot which are defective

N = 15

P = 60% = 0.60

So when we do the multiplication,

We have:

NP = 15x0.60

= 9

So in conclusion the expected value of defective bulbs in the sample is 9.
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