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3 years ago

Add the sum of (−5.4) and 8.2 to the opposite of (−2 3/4 ).

Mathematics

1 answer:

mash [69]3 years ago

4 0

Answer:2

Step-by-step explanation:

-5.4+8.2=14/5 and then opposite of -2 3/4 is 2.

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15 feet of edging costs $24.98. How much will 28 yards cost?

GuDViN [60]

Answer:

139.888 $

Step-by-step explanation:

Data :

15 ft = 24.98$

1 yard = 3 ft

15ft / 3 ft = 5 yard

5 yard = 24.98$

28 yd / 5yd = 5.6

5.6 × 24.98 = 139.888

6 0

2 years ago

Which of these expressions CANNOT be simplified by combining like terms?

SOVA2 [1]

That would be : 6fg^3 + 5f^2g^2 + f^3g - 7....because there are no like terms

8 0

2 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

100 POINTS AND BRAINLIST

Alla [95]

All ratios remains same

$\\ \rm\hookrightarrow sinX=\dfrac{P}{H}=\dfrac{30.8}{34}=0.9$

$\\ \rm\hookrightarrow cosX=\dfrac{B}{H}=\dfrac{14.4}{34.4}=0.42$

$\\ \rm\hookrightarrow tanX=\dfrac{sinX}{cosX}=\dfrac{0.9}{0.42}=2.14$

3 0

1 year ago

Read 2 more answers

The phone company NextFell has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of mon

rosijanka [135]

Answer:

$y = 0.35x + 35$

Step-by-step explanation:

Linear equation:

A linear equation has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept.

Finding the slope:

We have two points: (110, 73.5) and (760, 301).

The slope is given by the change in y divided by the change in x. So

Change in y: 301 - 73.5 = 227.5

Change in x: 760 - 110 = 650

Slope: $m = \frac{227.5}{650} = 0.35$

$y = 0.35x + b$

Finding the y-intercept:

(760, 301) means that when $x = 760, y = 301$ . So

$301 = 0.35(760) + b$

$b = 301 - 0.35(760)$

$b = 35$

$y = 0.35x + 35$

4 0

3 years ago