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LenKa [72]
3 years ago
8

A building has a shadow that is 18 feet long.

Mathematics
1 answer:
bulgar [2K]3 years ago
6 0

Answer:The height of the building is 30ft

Step-by-step explanation:

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The world population is projected to be 6.7 billion in 2040. At that​ time, there are expected to be approximately 2 billion mor
Charra [1.4K]
\bf \begin{cases}
s=\textit{Asia's population}\\
a=\textit{Africa's population}\\
r=\textit{rest of the world}\\
----------\\
\boxed{s}=a+2\\
\boxed{r}=\frac{s}{2}+0.2
\end{cases}\implies 
\begin{array}{llll}
s+a+r=6.7\\\\
\boxed{a+2}+a+\boxed{\cfrac{s}{2}+0.2}=6.7\\\\
a+2+a+\cfrac{\boxed{a+2}}{2}+0.2=6.7
\end{array}

solve for "a", to see what Africa's population will then be
5 0
3 years ago
Solve log6x+ log14=1
LekaFEV [45]

Answer:

x = 5/42 or 0.119

Step-by-step explanation:

log(6x) + log(14) = 1

log(6x × 14) = 1

log(84x) =

84x = 10¹

84x = 10

x = 10/84

x = 5/42 or 0.119

8 0
3 years ago
Which of the following are solutions to the inequality below select all that apply
KIM [24]
<h3>Answer:  n = -11</h3>

The other choices are false, so choice C is the only solution here.

==================================================

Explanation:

Draw a number line. You'll have 0 in the center, with positive values on the right. The positive values increase 1,2,3,4,... as you move from left to right.

The negative values will go in the opposite direction. When going from right to left, we have -1, -2, -3, -4, ...

See the diagram below.

Now plot an open hole at -7 on the number line. The open hole says that we exclude this value from the solution set. Then we shade everything to the left of the open circle. This visually describes all values smaller than -7. Something like -2 is not to the left of -7, meaning -2 < -7 is false. But a value like -10 is to the left of -7, making -10 < -7 true.

With that in mind, the answer is n = -11 since -11 is to the left of -7. Of the values in the answer choices, it's the only thing to the left of -7.

The value n = -7 cannot be the solution because n < -7 would become -7 < -7 which is false.

5 0
3 years ago
(5v +37v2 - 80v - 69)/(v+9)
valina [46]

Answer:

-67-80v

Step-by-step explanation:

hope this helps!

3 0
3 years ago
You have a ribbon that is 6 7/8 inches long. You use 2/5 of it on a project. How much ribbon is left?
weqwewe [10]

Answer:

Oof

Step-by-step explanation:idk sorry

8 0
3 years ago
Read 2 more answers
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