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Viktor [21]
4 years ago
5

What is 10 (3+8k) + 9 (k+3)

Mathematics
1 answer:
IrinaK [193]4 years ago
5 0
10 (3+8k) + 9 (k +3)

30+80k+9k+27
Collect like terms

30+27+80k+9k
57+89k
Or
89k+57
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−4 4/5 ÷ 4<br><br> A. -1 1/5<br><br> B. -4/5<br><br> C. 4/5<br><br> D. 1 1/5
kogti [31]

Answer:

A. -1⅕

Step-by-step explanation:

-4\frac{4}{5}\div 4 = -4,8\div 4 = -1,2 =  -1 \frac{1}{5}

I am joyous to assist you anytime.

7 0
3 years ago
Explain why 1.55 centimeters is a reasonable answer for the difference in the wingspans of the two butterflies
melamori03 [73]
The difference is referring to subtraction, so the question was most likely something like how much longer is this butterflies wings than this ones. so 4.55 might be one of the lengths and 3 might be the other, so 4.55 - 3 is 1.55.
4 0
3 years ago
A group of people were asked if they had run a red light in the last year. 315 responded "yes", and 190 responded "no".
Iteru [2.4K]

Answer:

0.624

Step-by-step explanation:

Number who have run a red light = 315

Number who haven't run a red light = 190

From the data :

The total number of people sampled = total possible outcome = (315 + 190) = 505

Selecting a person at random, probability that the selected person has run a red light :

P = required outcome / Total possible outcomes

Required outcome = Number who have run a red light = 315

P(having run a red light) = 315 / 505 = 0.624

6 0
3 years ago
A circle has an area of 314.1592. What is the diameter? (round to the nearest whole number)
ad-work [718]

Answer:

20

Step-by-step explanation:

The area of a circle is equal to pi*radius^2

We can then write this as

314.1592=π*r^2

We then divide pi to get

100=r^2

take the square root and you find that the radius equals around 10

The diameter is always equal to the radius times two which means that the diameter is 20

hope this helps

8 0
3 years ago
In which region is competition for resources most likely the<br> greatest?
irga5000 [103]

Answer:

In the US for oil. And all around the world

Step-by-step explanation:

5 0
3 years ago
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