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3 years ago

S+(4×-7 smplify by combining like terms

Mathematics

1 answer:

zvonat [6]3 years ago

7 0

Answer:

s+4x-7

Step-by-step explanation:

Remove parentheses.

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I NEED HELP

denpristay [2]

2 times a number minus 9 is less than or equal to 21. and in inequality form that’s: 2x - 9 >_ 21 and u make a number line and a closed circle on 15 and an arrow going right. i hope i understood your question right

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3 years ago

Read 2 more answers

According to a survey conducted by the U.S. Department of Health and Human Services, about 50% of U.S. adults age 18 and older a

liraira [26]

Using a confidence interval, we have that:

a) The range is from 48.8% to 51.2%.

b) Between 125,000 and 131,000 adults are registered organ donors.

<h3>What is a confidence interval?</h3>

A confidence interval is given by the <u>estimate plus/minus the margin of error</u>.

For this problem, we have that:

The estimate is of 50%.

The margin of error is of 1.2%.

The bounds of the range are given as follows:

50% - 1.2% = 48.8%.

50% + 1.2% = 51.2%.

Hence the range is from 48.8% to 51.2%.

<h3>What are the total numbers?</h3>

We have to find <u>48.8% and 51.2% of 255,200,373</u>, hence:

0.488 x 255,200,373 = 124,537,782.

0.512 x 255,200,373 = 130,662,591.

Rounded to hundredth thousand, between 125,000 and 131,000 adults are registered organ donors.

More can be learned about confidence intervals at brainly.com/question/25890103

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7 0

1 year ago

I am thinking of a number. If you multiply my number by four, add -4 to the product, and then take 1/3 of the sum, the result is

bogdanovich [222]

Answer:

$x = - \frac{7}{2}$

Step-by-step explanation:

x=unknown number

$\frac{4x + ( - 4)}{3} = - 6$

$4x - 4 = - 18$

$4x = - 14$

$x = \frac{ - 14}{4}$

simplify the fraction so... -7/2

6 0

3 years ago

Find the solution to the inequality 2x - 6 ≥ 3x -4 _________.

Alona [7]

Answer:x<=-2

Step-by-step explanation:

5 0

3 years ago

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Which of the following is the correct expansion of (3x-y)2

Studentka2010 [4]

$\bold{[ \ Answer \ ]}$

$\boxed{\bold{9x^{2} \ - \ 6xy \ + y^{2} }}$

$\bold{[ \ Explanation \ ]}$

$\bold{Find \ Expansion: \ (3x \ - \ y^{2} )}$

$\bold{----------------------}$

$\bold{[Apply \ Perfect \ Square \ Formula\ (\left(a-b\right)^2=a^2-2ab+b^2)] \ a \ = \ 3x, \ b \ = \ y}$

$\bold{\left(3x\right)^2-2\cdot \:3xy+y^2}$

$\bold{[Simplify \ \left(3x\right)^2-2\cdot \:3xy+y^2] \ 9x^2-6xy+y^2}$

= $\bold{9x^2-6xy+y^2}$

$\boxed{\bold{[] \ Eclipsed \ []}}$

3 0

3 years ago

S+(4×-7 smplify by combining like terms​

S+(4×-7 smplify by combining like terms