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4 years ago

A number is doubled and then six is added. When this is divided by four, the result is eleven.

Mathematics

2 answers:

stepladder [879]4 years ago

6 0

$(x\cdot 2+6)\div4=11\\
2x+6=44\\
2x=38\\
x=19$

tatuchka [14]4 years ago

5 0

<u>(x × 2) + 6</u> = 11
4

1. 11 times 4 equals 44
2. 44 - 6 equals 38
3. 38 divided by 2 equals 19

Answer: x = 19

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Doing research for insurance rates, it is found that those aged 30 to 49 drive an average of 38.7 miles per day with a standard

Alja [10]

Answer: 0.4302

Step-by-step explanation:

Given : Mean : $\mu=\text{38.7 miles }$

Standard deviation : $\sigma=\text{6.7 miles }$

Sample size : $n=60$

Also, these distances are normally distributed.

Then , the formula to calculate the z-score is given by :-

$z=\dfrac{x-\mu}{\sigma}$

For x=32.5

$\\\\ z=\dfrac{32.5-38.7}{6.7}=-0.925373134\approx-0.93$

For x=40.5

$\\\\ z=\dfrac{40.5-38.7}{6.7}=0.268656\approx0.27$

The p-value = $P(-0.93$

$=P(0.27)-P(-0.93)=0.6064198- 0.1761855=0.4302343\approx0.4302$

Hence, the required probability :-0.4302

3 0

3 years ago

Find the value if x and if nessesary express your answer as a simplified radical

tekilochka [14]

Answer:

10 rad 3 / 2

Step-by-step explanation:

x = missing angle of the full traingle

180 - (90 + 60) = x

180 - 150 = x

30 = x

10 rad 3 / 2 = x

this is just my understanding of the problem- im sorry if im incorrect

4 0

3 years ago

Round your answer to the nearest hundredth.<br><br> 13.48x − 200 < 256.12

wolverine [178]

Answer:

Step-by-step explanation:

13.48x − 200 < 256.12

Using the addition property , add 200 to both sides

That's

13.48x + 200 - 200 < 256.12 + 200

13.48x < 456.12

<u>Divide both sides by 13.48</u>

$\frac{13.48x}{13.48} < \frac{456.12}{13.48} \\ x < \frac{456.12}{13.48} \\ \: \: \: x < 33.83679$

We have the final answer as

x < 33.84 to the nearest hundredth

Hope this helps you

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3 years ago

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Verdich [7]

Answer:

2 one

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP! YOU WILL GET 100 POINTS! SUPER CONFUSED NEED HELP AS SOON AS POSSIBLE THIS IS DUE SOON!!! QUESTION IN PICTURE BELOW

nekit [7.7K]

Answer:

Q = 40.6°

Explanation:

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Use the cosine rule:

c² = a² + b² - 2ab cos(C)

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cos(Q) = -118.08/-155.52

cos(Q) = 41/54

Q = cos⁻¹(41/54) = 40.6°

4 0

2 years ago