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Mashutka [201]
4 years ago
10

Sarah bought 7 more songs than Betsy.If Sarah bought 21 songs from Apple Music, how many songs did Betsy buy?

Mathematics
1 answer:
kipiarov [429]4 years ago
4 0
21-7 = 14
Betsy buy 14
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Two cubes have sides of length 3 cm and 8 cm. what is the ratio of their respective surface areas?
Phoenix [80]

The surface area formula for a cube is: 6 * s^2, where s is the side length.

The two surface areas are:

6 * 3^2 = 54

and

6 * 8^2 = 384

The ratio of their surface areas, from the surface area of the smaller cube to the surface area of the larger cube is:

54/384 = 9/64

The answer is 9/64.

Note that another way to to find the ratio of the squares of the side lengths of the cubes.

7 0
3 years ago
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The mayor of a town places a map of the town on a coordinate grid with Town Hall at the point (0,0) and with each unit represent
Lorico [155]

Answer:

Given that the question rightly asks the amount it cost to drive from Smithville to Jones City, we have;

The question rightly asks the amount it cost to drive from Smithville to Jones City is approximately $7.209

Step-by-step explanation:

The coordinates of Smithville is (-25, 10)

The coordinates of Jones City is (15, 12)

The cost of driving a car for a mile = $0.18

Therefore, the distance from Smithville to Jones City is given by the formula for the distance, l, between two points with coordinates as follows;

l = \sqrt{\left (y_{2}-y_{1}  \right )^{2}+\left (x_{2}-x_{1}  \right )^{2}}

Where;

(x₁, y₁) = (-25, 10) and (x₂, y₂) = (15, 12)

l = \sqrt{\left (12-10  \right )^{2}+\left (15-(-25)  \right )^{2}} = 2 \cdot \sqrt{401}

The distance from Smithville to Jones City = 2·√401 ≈ 40.05 miles

The amount, A, it cost to drive from Smithville to Jones City a distance of approximately 40.05 miles is therefore given as follows;

A = 40.05 miles × $0.18 ≈ $7.209

8 0
3 years ago
3 divided by 4 equals(x-9) divides by 16
stiv31 [10]

Answer:

x = 21

Step-by-step explanation:

Multiply both sides by 16

3/4 x 16 = x - 9

2 Simplify 3/4 x 16 to 48/4

48/4 = x - 9

3 Simplify 48/4 to 12

12 = x - 9

4 Add 9 to both sides.

12 = x - 9

5 Simplify  12+9 to 21

21=x

6 Switch sides.

Answer: x=21

3 0
3 years ago
The factors of the number 48 are....
noname [10]

Answer:

1, 48, 2, 24, 4, 12, 6, 8, 3, 16

8 0
3 years ago
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The endpoints of the diameter of a circle are (-7.3) and (5.1). What is the center of the circle?
Minchanka [31]

Check the picture below.

since we know the endpoints of the diameter of the circle, then we can simply get the midpoint of those endpoints and that'd be the center,

\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{-7}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{1}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left( \cfrac{5-7}{2}~~,~~\cfrac{1+3}{2} \right)\implies \left( \cfrac{-2}{2}~~,~~\cfrac{4}{2} \right)\implies (-1~~,~~2)

4 0
3 years ago
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