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3 years ago

Which problems result in a positive number? Choose all answers that are correct. A. –4.6 • 1.6 B. –10 • (–5.2) C. 8.4 ÷ 2 D.

1 answer:

8 0

Well you can automatically eliminate, A, because when you multiply one number that's positive and another number that's negative the result is always going to be negative.
However, when you multiply two negatives the result is always positive!

So, the only ones up there that would result in a positive number is B and C

***D. was not posted so I cannot determine that one!

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jerry deposits 80.00 into new savings account the account earns 3.5% simple interest per year no money is added or removed from

deff fn [24]

Answer:

$84.14

Step-by-step explanation:

Begin by multiplying 1.035 by 4.

Get 4.14.

Add this to the original amount deposited, $80.

The answer is $84.14

8 0

3 years ago

What is the greatest common factor of 27 and 45

saveliy_v [14]

Answer:

The GCF of 27 and 45 is 9.

Step-by-step explanation:

Factors of 27: 1, 3, 9

Factors of 45: 1, 3, 5, 9, 15

The biggest number in both is 9 so the GCF is 9

4 0

4 years ago

If a vector pointing upward has a positive magnitude, a vector pointing downward has a negative magnitude. True or false?

Sidana [21]

Answer:

The statement is false.

Step-by-step explanation:

For any vector 'r' we have

$\overrightarrow{r}=x\widehat{i}+y\widehat{j}+z\widehat{k}$

The magnitude is given by

$|r|=\sqrt{x^{2}+y^{2}+z^{2}}..........(i)$

As we know that the upon squaring a term the result is always positive thus the term in right side of equation i is always positive no matter weather the terms (x,y,z) are positive or negative hence we conclude that magnitude of any vectorial quantity is always positive irrespective of it's direction.

8 0

3 years ago

12x-5y=20 y=x+4 3x+y=3 x=-y+3

Vladimir79 [104]

Standard form (which I assume is what they want you to turn these into) is y=mx+b.

12x-5y=20 is y=2.4x-4.
Subtract 12x from both sides, -5y=-12x+20.
Multiply both sides by -1, 5y=12x-20.
Divide both sides by 5, y=2.4x-4.

y=x+4 is already in standard form- I'm not quite sure what to do.

3x+y=3 is y=-3x+3.
Subtract 3x from both sides, y=-3x+3.

x=-y+3 is y=-x+3
Ad y to both sides, y+x=3.
Subtract x from both sides, y=-x+3.

4 0

3 years ago

A metal shipping container is being used to transport clothes overseas. It will have a volume of 640 cubic feet. If the length o

Lilit [14]

Answer:

C. 128ft

Step-by-step explanation:

it's C because whenever it says and you're supposed to multiply always remember that :) = (which means area ofc) you're finding the so you multiply 16x8 and the you get your answer (: ignore the 640 you just focus on the 16 and 8 ok? 16x8=128! :))

 >:(

3 0

3 years ago