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2 years ago

2x + x = please help

Mathematics

2 answers:

STatiana [176]2 years ago

7 0

Answer:

Step-by-step explanation:

If you have 2x, that would mean there is 1x and 1x. T

he question asks what 2x+2x+1x is, and since all three have the same variable you can just add the coefficient.

The coefficients are 1, 1, and 1 since they are in front of the variable.

The variable is x.

Therefore, since 1+1+1=3, your answer is 3x.

Troyanec [42]2 years ago

5 0

Well my man, if it does not give you a value for x.... your answer would be 2x

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serious [3.7K]

Answer:

Step-by-step explanation:

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altogether # of hours worked=8 and half hour

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3 years ago

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adelina 88 [10]

10 1/8 miles would be the answer.

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3 years ago

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Umnica [9.8K]

Neither of them are correct.

This is what Annabelle is doing:

$(4^2+7^5)(4^3+7^2)$

This is what Navelle is doing:

$(4^27^2)(4^37^2) \implies 4^{2*3}7^{2*5}$

Navelle is multiplying the exponents. You only do that when you raise an exponent to a power under parenthesis. Annabelle mistook multiplication for addition, and she got her answer as a result. This is the correct way to do it:

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6 0

3 years ago

A football team was given 3 penalties for 15 yards each and 2 penalties for 5 yards each. What was the total change in their fie

madam [21]

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2 years ago

Assume two independent random samples are available which provide sample proportions. For the first sample assume n1= 100 and x1

Vesnalui [34]

Answer:a) z-value = -1.425 p-value= 0.077 statistically significant

Step-by-step explanation:

Given the following :

n1 = 100; x1 = 39 ; n2 = 100 ; x2 = 49

Z value for two independent samples can be obtained using the relation :

Z = (p1 - p2) /(√p(1-p)) * (√[(1/n1) + (1/n2)]

Z = -1.425

P-value : using the online p-value calculator at a confidence level of 90% from z score

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The p value is less than 0.1 , hence result is significant at p<0.10

8 0

3 years ago