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Kaylis [27]
4 years ago
5

Solve this equation for m. 7.6 – 0.4m = -2

Mathematics
1 answer:
Leviafan [203]4 years ago
4 0
7.6 - 0.4m = -2
Subtract 7.6 from both sides
-0.4m = -9.6
Divide by -0.4 by both sides
m = 24
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Tammy took a five-hour flight to Denver, Colorado. She traveled
marysya [2.9K]

Answer:

388 miles in one hour.

Step-by-step explanation:

You divide 1,940 by 5.

7 0
3 years ago
The area of a trapezium is 360 cm² and its height is 18 cm. If one of the parallel sides is longer than the other by 6 cm, then
Leokris [45]

Answer:

The two parallel sides a and b are 17 cm and 23 cm respectively

Step-by-step explanation:

Area of a trapezium = {(a+b)/2} h

Where

h = height = 18 cm

a = parallel side 1 = x

b = parallel side 2 = x + 6

Area of a trapezium = {(a+b)/2} h

360 = {(x + x + 6) / 2} 18

360 = { (2x + 6) / 2} 18

360 = (2x + 6) 9

360 = 18x + 54

Subtract 54 from both sides

360 - 54 = 18x

306 = 18x

Divide both sides by 18

x = 306 / 18

= 17

x = 17 cm

a = parallel side 1 = x

x = 17 cm

b = parallel side 2 = x + 6

x + 6

= 17 + 6

= 23 cm

8 0
3 years ago
Hank estimated the width of the door to his class room in feet what is a reasonable estimate
timurjin [86]
My reasonable estimate might be about 2 1/2 feet. I know that because taking three rulers up to your bedroom or a normal room and get about 2 or 2 1/2 feet
4 0
3 years ago
Suppose y varies inversely with X, and y = 48 when x = 3. What is the value of x when y = 24?
olganol [36]

Answer:

C. 6

Step-by-step explanation:

Recall that inverse variation is given by:

\displaystyle y=\frac{k}{x}

Where <em>k</em> is the constant of variation.

We know that <em>y</em> = 48 when <em>x</em> = 3. Substitute:

\displaystyle (48)=\frac{k}{(3)}

Solve for <em>k: </em>

<em />k=3(48)=144<em />

<em />

Hence, our equation is:

\displaystyle y=\frac{144}{x}

We want to find <em>x</em> when <em>y</em> = 24. Substitute:

\displaystyle \frac{24}{1}=\frac{144}{x}

Cross-multiply:

24x=144

Divide both sides by 24. Hence:

x=6

Our answer is C.

3 0
4 years ago
Which equation could you use to solve for x in the proportion 4/5=9/x?
Margarita [4]

Answer:

Hope u liked it..............

3 0
3 years ago
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