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musickatia [10]
3 years ago
12

A rectangle is 2 √7 feet wide and 3 √7 feet long. What is the area, in square feet, of

Mathematics
1 answer:
Flura [38]3 years ago
3 0

Answer:

42ft^{2}

Step-by-step explanation:

2\sqrt{7} × 3\sqrt{7}

Multiply the numbers outside the root and inside the root.

2x3=6      7x7=49

6\sqrt{49}

Simplify whats under the root

\sqrt{49} = 7

6×7=42

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3 0
3 years ago
What simplified ratio compares 48 inches to 2 feet? (12 inches = 1 foot)
Inga [223]
48 inches = 4 feet, therefore 4:2, but simplified it is B. 2:1
8 0
3 years ago
Can some please help me with 4 and 7 and show work
seropon [69]

4) 247÷19=13

base is 13in

7)0.2÷0.4=0.5

height is pop. 5in

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7 0
3 years ago
Given: AB ∩ GF = O, E ∈ interior of ∠GOB, H ∈ interior of ∠AOF. Without changing the picture indicate:
sesenic [268]

Answer:

Step-by-step explanation:

Given that

AB n GF = O

E ∈ ∠GOB

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4 0
3 years ago
two years ago the cats tim and tom were toghether 15 years old.Now tom is 13 years old.In how many years will tim be 9 years old
Norma-Jean [14]

Answer:

  3 years

Step-by-step explanation:

As with many age problems, you can reason it without equations. If Tom is 13 now, 2 years ago he was 11. If the total age of the two cats at that time was 15, then Tim was 15 -11 = 4.

That means Tim is now 4+2 = 6, so will be 9 in 3 years.

_____

<em>Additional comment</em>

If you want to write equations, there are several ways you can do it. We often like to use variables to represent the current age. We can assign ...

  x = Tim's current age; y = Tom's current age.

The sum of their ages 2 years ago was ...

  (x -2) +(y -2) = 15

Tom's current age is 13, so we have y=13. Using that in the equation gives ...

  x -2 +13 -2 = 15

  x = 6 . . . . . . . . . . subtract 9, collect terms

That's Tim's current age, so Tim will be 9 years old in 3 years.

3 0
2 years ago
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