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Tpy6a [65]
4 years ago
15

find the percent of decrease from 210 to 120. round to the nearest tenth if necessary. A. 75% B. 42.9% C. 0.8% D. 175%​

Mathematics
1 answer:
abruzzese [7]4 years ago
8 0

Answer:

42.9%

Step-by-step explanation:

-42.857142857142854 is the exact number. Rounded to 42.9% thus b: is the correct answer.

Formula:

[(120 - 210) / 210] × 100% = -0.42857142857142855 × 100% = -42.857142857142854%

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The volume of a sphere is 4,500π cubic yards. What is the radius of the sphere?
algol [13]

Answer:

  • 15

Step-by-step explanation:

In the question it is given that the volume of a sphere is 4,500π cubic yards. And we have to find the radius.

We know that,

  • 4/3πr³ = Volume of a sphere

Now, Substituting the values in the fomulae :

⇒ 4/3πr³ = 4500π

Cancelling π from both sides :

⇒ 4/3r³ = 4500

⇒ 4r³ = 4500 × 3

⇒ 4r³ = 13500

⇒ r³ = 13500/4

⇒ r³ = 3375

Taking cube root on both sides we get :

⇒ r = 15

Therefore,

  • <u>The radius of the sphere is 15 yards</u>
5 0
3 years ago
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4. Kay and Allen sell cell phones. Last month Kay sold 17 more cell phones than Allen. Together they both sold 117 cell phones.
forsale [732]

Answer:

Allen sold 50 cell phones while Kay sold 67 cell phones.

Step-by-step explanation:

Let the number of cell phones sold by Allen be x. This will imply that the number of cell phones sold by Kay is x + 17.

Furthermore, we are informed that together they sold a total of 117 cell phones. Therefore, we use the following equation to determine the number of cell phones sold by each;

x + x + 17 = 117

2x + 17 = 117

2x = 100

x = 50

Therefore, Allen sold 50 cell phones while Kay sold 67 cell phones.

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3 years ago
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Answer:

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3 years ago
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What is the answer to 8=56, 7=42, 6=30, 5=20, 3=?
ozzi
8(7) = 56
7(6) = 42
6(5) = 30
5(4) = 20
4(3) = 12
3(2) = 6
∴ 3 = 6
7 0
3 years ago
A plant farm sells bundles of rose bushes. Each bundle contains 150 rose bushes and has the same ratio of hybrid tea roses, clim
devlian [24]

Answer:

since all bundles contain the same amount of each type of rose, and one bundle has 9 climbing roses. two bundles will have 18 climbing roses. the question wants to know how many roses out of the two bundles won't be climbing roses. so you need to do: 300 - 18 = 282

the answer is A

Step-by-step explanation:

i hope this helps :))

3 0
3 years ago
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