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Mars2501 [29]
3 years ago
15

HELP ASAP!! BRAINLIEST

Mathematics
1 answer:
Maslowich3 years ago
5 0

Answer: red is exponential growth blue is exponential decay and green is neither

Step-by-step explanation:

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Please help with #12
ExtremeBDS [4]

Answer:

a. 1 1/8 b. 8/9

Step-by-step explanation:

You can set this up as a proportion to solve.  For part a. we know that 2/3 of the road is 3/4 mile long.  2/3 + 1/3 = the whole road, so we need how many miles of the road is 1/3 its length.  Set up the proportion like this:

\frac{\frac{2}{3} }{\frac{3}{4} } =\frac{\frac{1}{3} }{x}

Cross multiplying gives you:

\frac{2}{3}x=\frac{1}{3}*\frac{3}{4}

The 3's on the right cancel out nicely, leaving you with

\frac{2}{3}x=\frac{1}{4}

To solve for x, multiply both sides by 3/2:

\frac{3}{2}*\frac{2}{3}x=\frac{1}{4}*\frac{3}{2} gives you

x=\frac{3}{8}

That means that the road is still missing 3/8 of a mile til it's finished.  The length of the road is found by adding the 3/4 to the 3/8:

\frac{3}{4}+\frac{3}{8}=\frac{6}{8}+\frac{3}{8}=\frac{9}{8}

So the road is a total of 1 1/8 miles long.

For b. we need to find out how much of 1 1/8 is 1 mile:

1 mile = x * 9/8 and

x = 8/9.  When 1 mile of the road is completed, that is 8/9 of the total length of the road completed.

8 0
3 years ago
Which expression can be used to determine the slope of the line that passes through the points (–7, 3) and (1, –9)?
cluponka [151]
To determine the slope, you can use the following formula:

(y2-y1)/(x2-x1)
7 0
2 years ago
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Rachel had a popcorn machine at her party. Determine whether the relationship between time and the amount of popcorn popped is d
daser333 [38]
The relationship between time and amount of popcorn popped is proportional.
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2 years ago
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An athletic field has the shape of a 40-yard-by-100-yard rectangle with a semicircle at each end. A running track that is 10 yar
astraxan [27]

Answer:

5000 is the answer

Step-by-step explanation:

mark me brainliest

8 0
3 years ago
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Let f(x) = 4x + 5 and g(x) = x2 - 9x + 20.<br> f(x)<br> g(x)
Reil [10]

Answer:97

97

Step-by-step explanation:

7 0
3 years ago
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