A rectangular fish tank has a base that is 3 inches by 7 inches. How much water will it take to fill the
tank to a depth of 5 inches?
99 cubic inches
B
105 cubic inches
15 cubic inches
D
142 cubic inches

B.105

Step-by-step explanation:

To solve you have to find the volume

The equation is length*width*height=volume

7*3=21

21*5=105

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two