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3 years ago

Simplify the expression 4(x + 5) - 3(7 + x)

Mathematics

2 answers:

Anvisha [2.4K]3 years ago

8 0

Answer:

x-1

Step-by-step explanation:

aleksandrvk [35]3 years ago

7 0

Answer:

x - 1

Step-by-step explanation:

4(x+5)-3(7+x)

4( x + 5) = 4x + 20

4x+20-3(7+x)

-3(7 + x) = -21 - 3x

4x+20-21-3x

4x + 20 - 21 - 3x = x-1

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I will give you Brainliest and 500 points if you do this please

aleksley [76]

Answer:

1. C

2. D

Step-by-step explanation:

Pattern A is adding by 2's (1 -> 3, 4 -> 6, 7 -> 9 and so on).

Pattern B is multiplying by 2's (2 -> 4, 3 -> 6, 4 -> 8 and so on).

If 0.25 gallons of paint = 24 ft^2, then 1 gallon will equal?

Set up an equation:

Variable x = area of ft^2 for 1 gallon of paint

0.25/24 = 1/x

Cross multiply

0.25 × x = 24 × 1

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To make calculations easier, you can convert the decimal into a fraction: 0.25 = 1/4

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Check your work:

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3 years ago

Which is a true statement about the diagram? m∠5 + m∠6 = m∠1 m∠3 + m∠4 + m∠5 = 180° m∠1 + m∠2 = 180° m∠2 + m∠3 = m∠5

s2008m [1.1K]

m<1 +m<2 = 180° is the answer

7 0

3 years ago

Read 2 more answers

A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is tak

Nostrana [21]

Answer:

The lower bound of the 95% confidence interval for the mean sale time for all homes in the neighborhood is of 160 days.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96\frac{72}{\sqrt{22}} = 30$

The lower end of the interval is the sample mean subtracted by M. So it is 190 - 30 = 160 days

The lower bound of the 95% confidence interval for the mean sale time for all homes in the neighborhood is of 160 days.

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2 years ago

What is the percent?

Brilliant_brown [7]

Answer:

What do u mean

Step-by-step explanation:

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3 years ago

The range of which function includes –4?

TiliK225 [7]

Answer:

The function $f(x)=\sqrt{x-5}$

Step-by-step explanation:

The Range of any function is complete set of all possible resulting values of the dependent variable , after substituting the domain.

so, the function $f(x)=\sqrt{x-5}$ has range $f(x)$\geq$ -5$

This includes - 4 .

Hence, the function is $f(x)=\sqrt{x-5}$ .

6 0

2 years ago

Read 2 more answers