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Sergeu [11.5K]
3 years ago
9

The sum of twice a number and 13 is 75

Mathematics
1 answer:
Nina [5.8K]3 years ago
3 0
So what they are saying is the sum of 2x +13=75
Therefore we can just solve for 2x, our unknown value.
2x+13=75 now subtract 13 and divide by 2 from both sides of equation to not change the equation
x+13-13=75-13
This leaves us with
x=(75-13)/2=31 therefore x=31 or our unknown value is 31.

I hope this helped. Any questions please just ask. Thank you.
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What is the y-intercept of the line perpendicular to the line y = 3/4x + 3 that includes the point (-3, -3)
kipiarov [429]
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Degger [83]

Answer:

3

Step-by-step explanation:

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= Total sum ÷ number of observations

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It is known that 10% of the calculators shipped from a particular factory are defective. In a random sample of ten calculators,
umka2103 [35]

Answer:

0.7361

Step-by-step explanation:

In this question we have

number to be 10

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Then the probability of not more than 1 being defective:

P(x=0) + p(x= 1)

(10C0 x 0.1⁰ x 0.9^10-0)+(10C1 x 0.1¹ x 0.9^10-1)

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This is the the required probability and this answers the question.

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To get the required probabiltiy for this question is

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= 0.9477

The required probability is 0.9477

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tresset_1 [31]
Those expressions are already in scientific notation.
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Luden [163]

Answer:

When two lines are crossed by another line (which is called the Transversal), the angles in matching corners are called corresponding angles. Example: a and e are corresponding angles. When the two lines are parallel Corresponding Angles are equal.

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