4 years ago

I need help with this problem

Mathematics

2 answers:

GaryK [48]4 years ago

6 0

The answer would be 7.28 p.m.

Hope It helps

21+42+7=63

8.31-0.63-0.4=7.28

morpeh [17]4 years ago

4 0

42+14+7=63 min =1 hour 3 minutes. Subtract that from 8:31 and you get 7:28 pm

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A trapezoid has an area of 13.5 square inches. If the bases are 3 and 6 inches what is the height?

liraira [26]

Well the formula is : b1+b2/2 (h)

so the height would be solved as :
13.5 = 3+6/2 (h)
13.5 = 9/2 (h)
h = (13.5)/(9/2)
h = (13.5) x (2/9) *reciprocal*
h = (27) / (9)
h = 3

5 0

3 years ago

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ICE Princess25 [194]

After staring at this for a few seconds, I think the equation

$-5\sqrt{10}\cdot\sqrt{15}=[1]\sqrt{[2]}$

is asking you to simplify the left hand side so that it has a form matching the right hand side, and [1] and [2] are placeholders. My guess is that they're supposed to be integers.

Notice that

$\sqrt{10}=\sqrt{5\cdot2}=\sqrt5\cdot\sqrt2$