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3 years ago

Please help I’m giving extra points

Mathematics

2 answers:

jok3333 [9.3K]3 years ago

4 0

Answer:

Step-by-step explanation:

Nikolay [14]3 years ago

4 0

She can tell by looking at all the possible solutions. Due to the fact that she can solve this equation multiple ways, Elana knows that there are many solutions to this problem.

I hope this helps! :)

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the selling price of a refrigerator, is 750.00. if the markup is 25% of the dealers cost, what is the dealers cost of the refrig

gavmur [86]

750/x=25/100
750x100=75,000
75,000/25= 3,000
75,000+3,000= 78,000

8 0

4 years ago

Help me plz I need help plz

timurjin [86]

Answer:

Step-by-step explanation:

For example, say that the regular price was $2. 0.10 x 2 = 0.20. Using the info in option c, then she would subtract 0.20 from 2, which would give her the sale price. Hope this helps!

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3 years ago

The following list shows how many brothers and sisters some students have:

Goryan [66]

Answer:

Step-by-step explanation:

So we have the set of numbers: 3,4,4,5,5,2,5,4,6,3,6,5,3.

Mode just means the most repeated number so let's sort them into groups.

(2) (3,3,3) (4,4,4) (5,5,5,5) (6,6).

the most repeated number is 5 which we see in the sequence about 4 times.

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3 years ago

What is the product of 3800 and 9.9 * 10^5 expressed in scientific notation?

mina [271]

Answer: i came up with this

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

. The sign of the exponent will depend on the direction you are moving the decimal.

3.762

5 0

3 years ago

B. 8/27 D. 1/3 10. Three spheres of radii , 2r, and 3r, respectively, are melted and formed into a new sphere. Find the surface

Dahasolnce [82]

Answer:

$A_{f}=4\pi (\sqrt[3]{36} r)^{2}\\\\V_{f}=\frac{4}{3} \pi (36r^{3})$

Step-by-step explanation:

In order to find the final radii of the sphere, we need to calculate the volume, knowing that volumes are additive:

$V_{1}=\frac{4}{3} \pi (r^{3})\\\\V_{2}=\frac{4}{3} \pi (2r)^{3}\\\\V_{3}=\frac{4}{3} \pi (3r)^{3}\\\\V_{f}=\frac{4}{3} \pi (r^{3}+(2r)^{3}+(3r)^{3})\\\\V_{f}=\frac{4}{3} \pi (r^{3}+8r^{3}+27r^{3})\\\\V_{f}=\frac{4}{3} \pi (36r^{3})\\\\V_{f}=\frac{4}{3} \pi R^{3}\\\\R=\sqrt[3]{36} r$

Now that we know the radii of the new sphere, we can calculate the surface area:

$A_{f}=4\pi R^{2}\\\\A_{f}=4\pi (\sqrt[3]{36} r)^{2}$

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3 years ago