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3 years ago

Write an solve an equation based off the verbal phrase. 10 less than half a number is 27.

Mathematics

2 answers:

olga_2 [115]3 years ago

8 0

Answer: x/2 - 10 = 27, and x is the number.

I think that's right. :)

iren2701 [21]3 years ago

3 0

1/2x-10=27, I'm pretty sure. I had to do these

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Which equation has the least steep graph?

MAVERICK [17]

Answer:

$y=\frac{1}{4}x+6$

Step-by-step explanation:

$y=\frac{1}{4}x+6$ is the least steeped graph

The greater the slope, the steeper the line.
Also you use the absolute values of the slopes when determining the steepness.

So here it would be: $\frac{3}{4},7,\frac{1}{4},2$
Now, arrange them from least to greatest: $\frac{1}{4},\frac{3}{4},2,7$

As you can see, $\frac{1}{4}$ is the smallest number/slope.

Hope this helps!

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3 years ago

A fire department in a rural county reports that its response time to fires is approximately normally distributed with a mean of

Lilit [14]

Answer-

In 25.15% cases their response times is over 30 minutes.

Solution-

Hint- Calculating the z-score (how much standard deviations away from the mean) and then getting the corresponding probability value from normal distribution table we can get solution.

Applying the formula for Z-score,

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

Here,

X = score = 30,

μ = mean = 22,

σ = standard deviation = 11.9

Putting the values,

$\Rightarrow Z=\frac{30-22}{11.9}=0.67$

$\therefore P(x>30)=1-P(Z\leq 0.67)=1-0.7485=0.2515=25.15\%$

(Subtracted from 1 as the values of area to the left of the Z score is given in table, but we need the area right to Z score as response times more than 30 minutes is asked)

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3 years ago

Select the option that best describes the relationship

jek_recluse [69]

Answer: The answer is the 3rd one - Positive, linear association

Step-by-step explanation:

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4 years ago

Read 2 more answers

A certain medication is eliminated from the bloodstream at a rate of about 17% per

aivan3 [116]

Using an exponential function, it is found that the multiplier used to predict the amount of medication remaining 2 hours after the peak level is of 0.6889.

<h3>What is an exponential function?</h3>

A decaying exponential function is modeled by:

$A(t) = A(0)(1 - r)^t$

In which:

A(0) is the initial value.

r is the decay rate, as a decimal.

In this problem, we have that the decay rate is of r = 0.17, hence:

$A(t) = A(0)(0.83)^t$

After 2 hours, the multiplier is given by:

$A(2) = A(0)(0.83)^2 = 0.6889A(0)$

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

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2 years ago

Which expression is equivalent to 3(x + 4y)?

RUDIKE [14]

Just distribute the 3. 3(x + 4y) = 3x + 12y

3x + 12y is the answer.

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4 years ago