All categories

3 years ago

206.8 × .42 need help I keep coming up with the wrong answer dont know what I'm doing wrong

Mathematics

2 answers:

Helen [10]3 years ago

8 0

206.8

× .42

Ignore the decimals

2068 * 42

86856

there are 3 numbers to the right of the decimal in the original problem

put 3 numbers to the right of the decimal in the answer

86.856

2068 * 2 = 4136

2068*40=82720

add

82720

+4136

------------

86856

now add the decimals

86.856

aleksklad [387]3 years ago

4 0

86.856 should be the correct answer

You might be interested in

If you were a biologist counting very large numbers of cells as part of your research get several reasons why you like that for

Nastasia [14]

If it was in standard notation it would be very confusing to add the number of cells and it would be less organized.

8 0

3 years ago

Is the product of 2 perfect squares always a perfect square?

nexus9112 [7]

The product of two perfect squares is a perfect square.

Proof of Existence:
Suppose a = 2^2 , b = 3^2 [ We have to show that the product of a and b is a perfect square.] then
c^2 = (a^2) (b^2)
= (2^2) (3^2)
= (4)9
= 36
and 36 is a perfect square of 6. This is to be shown and this completes the proof

3 0

3 years ago

Simplify 3r+n2-r+5-2n+2

Ksenya-84 [330]

2r+7+2n+n2

Because I combined the ones with like terms.

8 0

3 years ago

Read 2 more answers

A semi-circle window can be used above a doorway or as an accent window

anzhelika [568]

A semicircle is a part of a circle, and it is referred to as half of a given circle. Thud the area of the semi-circle window is 982 $in^{2}$ .

A circle is a shape that is bounded by a curved path which is referred to as the circumference. Some parts of a circle are radius, diameter, sector, arc, semi-circle, circumference, etc.

A semicircle is a part of a circle, and it is referred to as half of a given circle.

such that:

Area of a circle = $\pi$ $r^{2}$

and

area of a semicircle = $\frac{\pi r^{2} }{2}$

where: r is the radius of the circle, and $\pi$ is a constant with a value of $\frac{22}{7}$ .

Thus from the given question, it can be inferred that;

r = $\frac{50}{2}$

= 25

r = 25 in

Thus, the area of the semi-circle can be determined as;

area of the semi-circle = $\frac{1}{2}$ * $\frac{22}{7}$ * $25^{2}$

= 982.1429

area of the semi-circle = 982.14 $in^{2}$

The area of the semi-circle window is approximately 982 $in^{2}$ .

for more clarifications on the area of a semi-circle, visit: brainly.com/question/15937849

#SPJ 1

8 0

2 years ago

I need help on 9-11 please

lisabon 2012 [21]

Hello! I would love to help!

9. Basically, it is asking us to multiply 5.2 by 46.

5.2*46=239.2

So, your answer is 239.2 inches.

10. First, let's find out how many blocks she has left to run by subtracting the number of blocks she has already ran by the number of total blocks.

60-18=42

So Susan has 42 blocks left to run. Now, let's divide that by 2 since she can run 2 blocks per minute.

42/2=21

So, the answer is 21 minutes.

11. Let's set up an equation: We know that she will automatically pay $49.95 per month, plus $0.15 per additional minute. We also know her final total for the month was $61.20:

49.95+0.15m=61.20

Let's solve! Subtract both sides by 49.95

49.95+0.15m-49.95=61.20-49.95

Simplify

0.15m=11.25

Now, divide both sides by 0.15

0.15m/0.15=11.25/0.15

M=75

So your answer is 75 additional minutes.

Hope this helped! Comment if you have questions!

5 0

4 years ago