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3 years ago

5

Can I get some help with these? Please show you're work!

1 answer:

DerKrebs [107]3 years ago

4 0

Hi there!

There are a few rules for multiplying positive and negative numbers:

-Any negative number times a negative number is a positive.
-Any positive number times a negative number is a negative.
-Any negative number times a positive number is a negative.
-Any positive number times a positive number is a positive.

So, using these rules, let's work through the multiplication:

-19 is a negative, and multiply by +2, would be a <u>negative</u>.
Multiply a negative by +37, and you still have a <u>negative</u>.
Multiply a negative by -0.8, and you will have a <u>positive</u>.
Multiply a positive with -112, and you will get a <u>negative.

So, your answer would be a negative number.

</u>Hope this helps!

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What is 345 2/5 x 14 3/5

defon

Answer:

Exact Form:

126071/25

Decimal Form:

5042.84

Mixed Number Form:

5042 21/25

<u><em>I hope that helped at all.</em></u>

5 0

3 years ago

Read 2 more answers

Gus and Ike carried a total of 84 books to the library. If Gus carried 5 as many books as Ike, how many books did they each carr

Alexus [3.1K]

Answer:

They each carried 25 books each.

Step-by-step explanation:

You get this by doing

84/5=16.8

then you do

84/2/5= 8.4

8.4+16.8=25.2

but round to whatever 5 or higher bump up below 5 keep the same

so your answer results in 25.

3 0

4 years ago

Someone please help me with this!!

babunello [35]

A= (3.5,3.5)

b=(3.5,7)

c=(10.5,7)

D=(10.5,3.5)

5 0

3 years ago

For the figures below, assume they are made of semicircles, quarter circles and squares. For each shape, find the area and perim

laiz [17]

Answer:

Part 1) $A=36(\pi-2)\ cm^2$

Part 2) $P=6(\pi+2\sqrt{2})\ cm$

Step-by-step explanation:

Part 1) Find the area

we know that

The area of the shape is equal to the area of a quarter of circle minus the area of an isosceles right triangle

so

$A=\frac{1}{4}\pi r^{2}-\frac{1}{2}(b)(h)$

we have that the base and the height of triangle is equal to the radius of the circle

$r=12\ cm\\b=12\ cm\\h=12\ cm$

substitute

$A=\frac{1}{4}\pi (12)^{2}-\frac{1}{2}(12)(12)\\A=(36\pi-72)\ cm^2$

simplify

Factor 36

$A=36(\pi-2)\ cm^2$

Part 2) Find the perimeter

The perimeter of the figure is equal to the circumference of a quarter of circle plus the hypotenuse of the right triangle

The circumference of a quarter of circle is equal to

$C=\frac{1}{4}(2\pi r)=\frac{1}{2}\pi r$

substitute the given values

$C=\frac{1}{2}\pi (12)\\C=6\pi\ cm$

The hypotenuse of right triangle is equal to (applying the Pythagorean Theorem)

$AC=\sqrt{12^2+12^2}\\AC=\sqrt{288}\ cm$

simplify

$AC=12\sqrt{2}\ cm$

Find the perimeter

$P=(6\pi+12\sqrt{2})\ cm$

simplify

Factor 6

$P=6(\pi+2\sqrt{2})\ cm$

8 0

3 years ago

Wendy is going to paint the front wall of the house only, (see image attached). Find the area that needs to be painted.

7nadin3 [17]

Answer:

20

Step-by-step explanation:

20

4 0

3 years ago