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ExtremeBDS [4]
3 years ago
12

What is the surface area in square inches of a cube with a side 7 inches long? 10

Mathematics
2 answers:
OLga [1]3 years ago
7 0

Answer:

249 inches

Step-by-step explanation:

a cube is equal on all sides so if one side is 7 all sides are 7, if you multiply 7 by 7 you get 49 but that's just one face of the cube, there are 6 faces on a cube so 49 x 6 is 249

SVETLANKA909090 [29]3 years ago
5 0

Answer:

28

Step-by-step explanation:

7x4

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A surveyor is 305 ft from the base of the new courthouse. Her angle-measuring device is 5 ft above the ground. The angle of elev
Charra [1.4K]

Answer:

279.62 feet

Step-by-step explanation:

We have a rectangle with 5ft x 305ft sides representing the area between your device and the base of the courthouse.

In addition to this we have an angle of 42 °

The height would come being the length of the opposite side of this triangle.

We know that:

tan (° A) = opposite / adjacent

Adjacent side is 305 ft and ° A is 42 °

Solved for opposite:

Opposite = adjacent * tan (° A)

Opposite = 305 * tan (42) = 274.62 feet

We must add 5 feet to this result and we are left with:

274.62 + 5 = 279.62

It means that the height is 279.62 feet

3 0
3 years ago
Ashton and Kamir are arguing about how a number trick they heard goes. Ashton tells Andrew to think of a number, multiply it by
Artemon [7]

Answer: The number was 9.

Step-by-step explanation:

Let the number be 'x;.

think of a number, multiply it by five and subtract three from the result :

According to Ashton, the expression would be :

5x-3

Kamir tells Andrew to think of a number, add five and multiply the result by three:

According to Kamir, the expression would be :

3(x+5)

At last, they get the same number :

5x-3=3(x+5)\\\\5x-3=3x+15\\\\5x-3x=15+3\\\\2x=18\\\\x=\dfrac{18}{2}\\\\x=9

Hence, the number was 9.

5 0
3 years ago
Can 16/120 be simplified? If so, what is the simplest form of it.
tia_tia [17]

Answer:

2/15

Step-by-step explanation:

5 0
3 years ago
What's the independent variable and the dependent variable
jeka57 [31]

Answer:

The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable. In other words, the dependent variable is the one you measure and the independent is the one you change in an experiment.

Step-by-step explanation:

Hope this helps:)

3 0
3 years ago
Read 2 more answers
XZ = 13 and YZ = 4 Find XY
saw5 [17]
Z = 13/x

sub Z inside YZ = 4

Y(13/x) = 4
13Y * YX = 4
YX = 4/13Y
7 0
3 years ago
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