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vlada-n [284]
3 years ago
12

4) 6(1 - 8m) + 3m = 231 A) {8} B) {-9) C) (-5) D) (-10)

Mathematics
2 answers:
Mazyrski [523]3 years ago
5 0

Answer:

C - -5

Step-by-step explanation:

6( 1 - 8m) + 3m = 231

Open the bracket with 6

6*1 = 6

6*-8m = -48m

6 - 48m + 3m = 231

6 - 45m = 231

-45m = 231 - 6

-45m = 225

Divide both sides by -45

-45m/-45 = 225/-45

m = 225/-45

m = -5

Dimas [21]3 years ago
3 0

Step-by-step explanation:

6(1 - 8m) + 3m = 231

6 - 48m + 3m = 231

- 48m + 3m = 225

- 45m = 225

m =  - 5

option C

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Rectangular prism has a volume of 500 in.³ and the area of the base is 25 in.² what is the height of the rectangular prism
Evgesh-ka [11]

Answer:

20 in

Step-by-step explanation:

Vol. = Bh    where B  is the area of the base and h is the height of the prism

500 = 25h

h = 20 in

3 0
3 years ago
Which shows the expressions rewritten with the least common denominator?
baherus [9]

Answer:

  D.  (14x-4)/(8x^2) and (x^2-x)/(8x^2)

Step-by-step explanation:

The least common denominator will be 8x^2, the product of 2 and x to the highest of their powers in either of the denominators.

  \left\{\dfrac{7x-2}{4x^2},\ \dfrac{x-1}{8x}\right\}=\left\{\dfrac{7x-2}{4x^2}\cdot\dfrac{2}{2},\ \dfrac{x-1}{8x}\cdot\dfrac{x}{x}\right\}\\\\=\left\{\dfrac{14x-4}{8x^2},\ \dfrac{x^2-x}{8x^2}\right\}

7 0
2 years ago
29. Family income in the middle class: Bauer et al. (2011) identified the median income of a middle-class family in their sample
GREYUIT [131]

Answer:

No it is not

Step-by-step explanation:

The median is 84200

The mean is 85300

Low income is 65100

High income is 103400

From this information, we can see a skewed data. The mean would not be a good estimate value. Rather the center (median) would be more appropriate.

When we calculate the middle value for this data

65100+103400 = 168500/2 = 84250

84250 is closer to the median score of 84200. The median is best in the presence of outliers.

8 0
3 years ago
The surface area of the pyramid is<br><br> square inches.<br> fill in the blank
Rudik [331]

Answer:

9360 square inches

Step-by-step explanation:

4 0
3 years ago
Jennifer has 25 coins with a total value of $4.25. The coins are quarters and nickels. How many of each does she have?
kirill115 [55]

Answer:

15 quarters, 10 nickels

Step-by-step explanation:

q+n=25

0.25q+0.05n=4.25

multiply the first equation by -0.25 and add the second equation to it

-0.25q-0.25n=-6.25\\0.25q+0.05n=4.25
________________
                -0.2n=-2

n=\frac{-2}{-0.2} =10   has 10 nickels

q=25-n=25-10=15  has 15 quarters

10(.05) +15(0.25) = 0.5 + 3.75 = 4.25

Hope this helps

8 0
1 year ago
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