4 years ago

A chalkboard has an area of 35.8 ft a smaller chalkboard is 0.7 times that size what is the area of the smaller chalkboard

Mathematics

1 answer:

Elenna [48]4 years ago

3 0

The smaller chalkboard would be 25.06 ft

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Find the mean of the following data set.

rosijanka [135]

Answer:

Step-by-step explanation:

the sum of 8,5,15,12,10 is 50 and there are 5 numbers so 50 divided by 5 is 10 and it's mean is also 10

hope this helps !

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3 years ago

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How can 1/5x − 2 = 1/3x + 8 be set up as a system of equations? a . 5y − 5x = −10. 3y − 3x = 24 b. 5y − 5x = −10. 3y + 3x = 24 c

VMariaS [17]

The answer is d. 5y − x = −10. 3y − x = 24

$\frac{1}{5}x-2= \frac{1}{3}x+8=y$
⇒    $y= \frac{1}{5}x-2$
   $y= \frac{1}{3}x+8$
________________________
$y= \frac{x}{5} -2= \frac{x}{5} - \frac{10}{5} = \frac{x-10}{5}$
$y= \frac{x}{3} +8= \frac{x}{3} + \frac{24}{3} = \frac{x+24}{3}$
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$y= \frac{x-10}{5}$ ⇒    $5y=x-10$
$y= \frac{x+24}{3}$   ⇒    $3y=x+24$
________________________
$5y-x=-10$
$3y-x=24$

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3 years ago

Find the slope of the line that passes through (97,-54) and (-1, -15)

lianna [129]

Answer:

The slope is -39/98

also known as m=-39/98

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3 years ago

If f(x)=3x+5/x, what is f(a+2)?<br><br> A. 3(f(a))+5/f(a)+2<br> B. 3a+5/a+2<br> C. 3(a+2)+5/a+2

natali 33 [55]

f(x) = 3x + 5/x

f(a + 2) = 3.(a + 2) + 5/(a + 2)

Alternative C.

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3 years ago

Evaluate the following expression. 7 × 22 + (8 - 2) ÷ 3

sweet-ann [11.9K]

Answer:

156

Step-by-step explanation:

Using PEMDAS: We do the paranthese first:

7 * 22 + (8-2) / 3.

7 * 22 + 6 / 3.

Multiply / Divide:

154 + 6 / 3

154 + 2

156

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4 years ago

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