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solmaris [256]
3 years ago
13

Twice the sum of a number and 3.

Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
8 0
What are we supposed to do....
sashaice [31]3 years ago
8 0

Answer: 2n+3 is the answer

Step-by-step explanation:

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A man 6 feet tall casts a shadow that is 11 feet long. A building casts a shadow of 139 feet long. The building is tall. Round y
dmitriy555 [2]

Given:

Height of man = 6 ft

Height of man's shadow = 11 feet

Height of building's shadow = 139 feet

To find:

The height of the building.

Solution:

We know that the heights of the objects and there shadows are always proportional.

\dfrac{\text{Height of man}}{\text{Height of man's shadow}}=\dfrac{\text{Height of the building}}{\text{Height of building's shadow}}

Let x be the height of the building.

\dfrac{6}{11}=\dfrac{x}{139}

Multiply both sides by 139.

\dfrac{6}{11}\times 139=x

\dfrac{834}{11}=x

75.8181...=x

x\approx 75.8

Therefore, the building is 75.8 feet long.

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3 years ago
3(y - 3) = -15<br> I really need help
Tomtit [17]

Answer:

y=-2

Step-by-step explanation:

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7 0
3 years ago
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Eight friends share 4 bunches of grapes equally. What fraction of a bunch of grapes does each friend get?
AURORKA [14]
1/2 a bunch because 8 divided by 4 = 1/2 :)
4 0
3 years ago
The sum of three consecutive even numbers is 48. What is the biggest of these numbers?​
Luden [163]

Answer:

The greatest number is 18.

Step-by-step explanation:

consecutive: following one after the other

48 ÷ 3 = 16

16 would be the middle number

14 : 16 : 18

14 = smallest number

16 = middle number

18 = biggest number

14 + 16 + 18 = 48

3 0
3 years ago
What is the value of the expression? (-4.2)(2)+10
Crazy boy [7]
-8.4+10 = 10 - 8.4 = 1.6
8 0
3 years ago
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