2 years ago

Solve for d 4/5/d=2/15/1/3

Mathematics

1 answer:

Salsk061 [2.6K]2 years ago

4 0

Answer:

d = 1/18

Step-by-step explanation:

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The total use of electricity in the United States was 0.4 trillion kilowatt-hours in 1950 and about 2.8 trillion kilowatt-hours

lora16 [44]

Answer: 7

Step-by-step explanation:

Scientific notation is a method that is used in very large numbers or when we've very small numbers. The number given will be multiplied by its power of 10. In this case,

2.8 trillion = 2,800,000,000,000

= 2.8 × 10^12

0.4 trillion = 400,000,000,000

= 4 × 10^11

Therefore, the times more electricity was there in 1999 than 1950 will be:

= (2.8 × 10^12) / (4 × × 10^11)

= (2.8/4) / (10^12 - 11)

= 0.7 × 10

= 7 times

There were 7 times more electricity that was there in 1999 than 1950.

3 0

2 years ago

Misha increased her test score from 60% to 80%. What was the approximate percent increase of Misha's test score?

Leya [2.2K]

Answer:

20%

Step-by-step explanation:

$80\% - 60\% = 20\%$

6 0

3 years ago

Read 2 more answers

If L is the line through the point (-3,5) having a slope of (2/3) complete the equation of L

Artist 52 [7]

Y = mx + b
slope(m) = 2/3
(-3,5)...x = -3 and y = 5
now sub and find b, the y int
5 = 2/3(-3) + b
5 = -2 + b
5 + 2 = b
7 = b

so ur equation is : y = 2/3x + 7

4 0

3 years ago

Find the volume of the solid obtained by rotating the region under the curve y = x3 about the line y = -1 over the interval [0,1

Sedbober [7]

Answer:

I beileve its b

Step-by-step explanation:

3 0

2 years ago

Television is measured by the diagonal. A 55-inch tv has an actual diagonal length of 54.8 inches. Its height is 27 inch Mr.Schl

melomori [17]

Answer:

47.68 inches

Step-by-step explanation:

As seen in the diagram attached below we can see that the tv is a rectangle. We are given the diagonal and the height which means we have to find the length. Since the tv diagonal forms a right triangle we can use the Pythagorean theorem to solve for the length. This theorem would be the following.

$a^{2} + b^{2} = c^{2}$

where a and b are the sides of the triangle and c is the diagonal.

$27^{2} + b^{2} = 54.8^{2}$

$729 + b^{2} = 3,003.04$

$b^{2} = 2,274.04$

$b = 47.68$

Finally, we can see that the length of the TV is 47.68 inches

4 0

2 years ago