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serious [3.7K]
4 years ago
15

Can someone please help with these to problems.. thank you!

Mathematics
2 answers:
MakcuM [25]4 years ago
8 0

PEMDAS

The E stands for exponent, but also powers and square roots.

1. -2√9+4. The square root of 9 is 3. Because the -2 is outside the square root, you have to multiply it by the answer. -2*3=-6. -6+4=-2. The answer to #1 is -2.

2. Doing the same thing you did in #1 in question #2, you get the answer is 29.

Helen [10]4 years ago
3 0
-2 x 3 +4

-6+4

the answer is -2

then for the second one

5+4 x 6

5+24
answer =29
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the eagle trucking company must deliver 7/8 ton of cement blocks and 5/8 ton of bricks how much will this load weigh?
Mademuasel [1]
This load will weigh 1.5 TONS ALTOGETHER.

So, the truck is delivering a \frac{7}{8} ton of cement blocks, and a \frac{5}{8} of bricks. To find how much this load weighs, we'd have to add the two fractions together, which proves to be quite easy, because the denominators are already the same, so we wouldn't have to change anything.

\frac{7}{8} + \frac{5}{8} = \frac{12}{8}

And now, we would want to convert that fraction into a whole number, or at least a decimal, to find how many tons the truck is carrying. So we would divide. Once the work is done, here is what would happen:

12 ÷ 8 = 1.5

And there's your answer. The truck is carrying 1.5 TONS.
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