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Anvisha [2.4K]
3 years ago
7

What is the answer to this 10+4(2+20)

Mathematics
2 answers:
Bogdan [553]3 years ago
7 0

Answer:

98

Step-by-step explanation:

PEMDAS: Parenthesis, Exponents, Multiply, Divide, Add, Subtract, if tied, go left to right.

Elementary Algebra rhyme you should consider a requirement to remember because it's the base of a vast majority of problem's you'll encounter.

10+4(2+20)

10+4(22). . .distribute the 4 into the parenthesis aka multiply 22*4

10+88 = 98

AfilCa [17]3 years ago
6 0

Answer:

\Huge \boxed{98}

Step-by-step explanation:

To solve this problem, first you have to use order of operations stands for parenthesis, exponents, multiply, divide, add, & subtract the numbers from left to right.

<h2>Please Excuse My Dear Aunt Sally!</h2>

PEMDAS

Parenthesis

Exponent

Multiply

Divide

Add

Subtract

First, parenthesis.

\displaystyle (2+20)=22

\displaystyle 10+4*22

Next, multiply numbers from left to right.

\displaystyle 4*22=88

Then, add numbers from left to right.

\displaystyle 10+88=\boxed{98}

Therefore, the correct answer is 98.

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A particular battery claims to have a mean life of 400 hours with a standard deviation of 30 hours. Approximately what percent o
Svetach [21]

Using the normal distribution, it is found that 25.14% of the batteries will last more than 420 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, we have that the mean and the standard deviation are given, respectively, by:

\mu = 400, \sigma = 30.

The proportion of the batteries will last more than 420 hours is <u>one subtracted by the p-value of Z when X = 420</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{420 - 400}{30}

Z = 0.67

Z = 0.67 has a p-value of 0.7486.

1 - 0.7486 = 0.2514.

0.2514 = 25.14% of the batteries will last more than 420 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

3 0
2 years ago
What is 48% written as a fraction? (in simplest form) A) 1 48 B) 6 25 C) 12 25 D) 24 25
alexgriva [62]

Answer:

48% is 12/25 as a fraction. So C

3 0
3 years ago
Joe wants to purchase
svp [43]

Answer:

64.23%

Step-by-step explanation:

Percent error

(699-250)/699  x 100 = 64.23

3 0
3 years ago
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I’m assuming you want it in slope intercept form so it’s y=1/6x-2
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