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xxMikexx [17]
3 years ago
13

How much extra concrete was ordered ?

Mathematics
1 answer:
alexandr1967 [171]3 years ago
5 0

Answer:

Patio size: 3 cubic yards

1 cubic yard = $140

5.) 140 x 3 = $420

Step-by-step explanation:

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Which value of $y$ makes the equation $3y+8=7y+11$ true?
valentinak56 [21]

value of y which satisfies equation 3y+8=7y+11 is  y= \frac{-3}{4} .

<u>Step-by-step explanation:</u>

We have , 3y+8=7y+11 . We need to find which value of y satisfies this equation  3y+8=7y+11 :

3y+8=7y+11

⇒ 3y+8=7y+11

⇒ (3y+8)-3y=(7y+11)-3y

⇒ 8=4y+11

⇒ 4y+11 = 8

⇒ (4y+11)-11 = 8-11

⇒ 4y= -3

⇒ \frac{4}{4}y= \frac{-3}{4}

⇒ y= \frac{-3}{4}

Therefore, value of y which satisfies equation 3y+8=7y+11 is  y= \frac{-3}{4} .

8 0
3 years ago
PLEASE HELP QUESTION IN PICTURE
soldi70 [24.7K]

Answer:

16 units

Step-by-step explanation:

7 0
2 years ago
Construct a confidence interval for μd, the mean of the differences d for the population of paired data. Assume that the populat
Lynna [10]

Answer:

Step-by-step explanation:

Group Before After

Mean 80.27 78.27

SD 12.76 12.92

SEM 3.85 3.89

N 11 11

df = 10

standard error of difference = 0.798

The mean of Before minus After equals 2.00

Given a=0.01, |t(0.005, df=10)|=3.17 (check student t table)

So 99% CI is

2±t*s

--> 2±3.17*0.798

--> -0.5 < µd< 4.5

Answer:-0.5 < µd< 4.5

6 0
3 years ago
I need help with these two
castortr0y [4]
Example 7:
$2250 x 7.65% = $2250 x .0765 = $172.13
$172.13 is withheld for Social Security and Medicare.

Example 8:
$36,000 * 27% = $36,000 x .27= $9,270
$36,000 - $9,270 = $26,730
He makes $26,730 after deductions.
3 0
3 years ago
Find -x+10 less than o
Anastaziya [24]

Answer:

10 < x

Step-by-step explanation:

-x+10 <0

Add x to each side

-x+x+10 < 0+x

10 < x

4 0
3 years ago
Read 2 more answers
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