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2 years ago

Evaluate the expression -2b+x when b=3 and x=-4

Mathematics

2 answers:

earnstyle [38]2 years ago

6 0

Answer:

-10 is the answer

Step-by-step explanation:

first things that you will replace each number in:

-2x3+(-4)=-10

Kryger [21]2 years ago

3 0

Answer:

the answer to the question is -10

Step-by-step explanation:

substitute the given into the question

-2(3)+(-4)

then open the parentheses/multiply

-6-4

then subtract them

-10

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Doug estimates that his soccer team will win 7 games this year. The team actually wins 10 games. What is the percent error of Do

baherus [9]

Answer: 30%

Step-by-step explanation:

Percent error = $\dfrac{|\text{Estimated value - Actual value}|}{\text{Actual value}}\times100\%$

Estimated number of games win this year = 7

Actual number of games won = 10

Now , the percent error of Doug’s estimate = $\dfrac{|7-10|}{10}\times100\%= \dfrac{3}{1}\times10\%=30\%$

Hence, the percent error of Doug’s estimate = 30%

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goblinko [34]

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kirill [66]

Looks like 52° to me

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3 years ago

I need help on it pls

Jobisdone [24]

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Step-by-step explanation:

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3 years ago

An editor has a stack of k documents to review. The order in which the documents are reviewed is random with each ordering being

ladessa [460]

Using the probability concept, it is found that there is a $\mathbf{\frac{1}{k}}$ probability that “Relaxation Through Mathematics” is first to review.

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem:

There is a total of k documents to be reviewed, hence $T = k$ .
Of those documents, 1 is named “Relaxation Through Mathematics”, hence $D = 1$

The probability is:

$p = \frac{D}{T} = \frac{1}{k}$

A similar problem is given at brainly.com/question/24483829

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