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natali 33 [55]
3 years ago
13

Hurry please this is worth 25 points

Mathematics
2 answers:
andrew11 [14]3 years ago
7 0

Answer:

Malika runs 1/8 of a mile more than Andrew

Step-by-step explanation:

The easiest way to figure this out is by converting both of the fractions to have the same denominator. Do not convert them to decimals because the answer might not always turn out to be right.

If we keep Andrew's distance of 5/8 the same we can easily convert Malika's distance of 3/4 to the same denominator by multiplying it by two

\frac{3}{4} *\frac{2}{2} = \frac{6}{8}

Now that the denominators are the same, we are able to subtract the fractions.

\frac{6}{8} -\frac{5}{8} = \frac{1}{8}

Malika runs 1/8 of a mile more than Andrew

Troyanec [42]3 years ago
6 0

Answer:

1/8 mile

Step-by-step explanation:

This is a subtraction problem. We need to subtract 5/8 from 3/4. We need a common denominator of 8.

3/4 - 5/8 = 6/8 - 5/8 = 1/8

Answer: 1/8

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olga55 [171]

Answer:  its the second one

Step-by-step explanation:

5 0
3 years ago
Question 3
avanturin [10]

Answer:

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4 0
4 years ago
Which of the following does not represent exponential decay?
Ostrovityanka [42]

Answer:

y = 2(1 + 0.12)ˣ

Step-by-step explanation:

Exponential functions look like y = a(b)ˣ.

"x" and "y" would be points that are on the graph.

"a" is the y-intercept.

"b" is the rate of growth.

<u>When "x" is positive</u> in the equation:

<u>"b" is greater than 1: exponential growth.</u>

"b" is greater than 0 but less than 1: exponential decay.

Simplify each equation inside the brackets to find "b":

y = 2(1 + 0.12)ˣ

y = 2(1.12)ˣ

<u>b = 1.12</u><u>; b > 1; exponential growth.</u>

y = 7(1 – 0.09)ˣ

y = 7(0.91)ˣ

b = 0.91; 0 < b < 1; decay

y = 0.63ˣ

b = 0.63; 0 < b < 1; decay

When "x" is negative (like in the last option):

b > 1 is exponential decay.

0 < b < 1 is exponential growth.

Since b = 2.42 when "x" is negative in the equation, y = 2.42⁻ˣ is a decay.

7 0
3 years ago
Y varies directly with x, and y = 9 when x = 2. What is the value of y when x = 3?
blagie [28]
Direct variation equation is y = kx where k is the constant of variation.
First use the x and y you are given to find the k.
9 = k * 2
9/2 = k
Then use the k and new x to find the y.
y = (9/2)(3)
y = 27/2
4 0
3 years ago
A store sells small notebooks for $7 and large notebooks for $14. If a student buys 6 notebooks and spends $63, how many of each
babunello [35]
3 small notebooks and 3 large ones
My reasoning is 3 times 7 is 21
63 - 21 = 42
3 times 14 is 42
So 42 + 21 = 63
Therefore 3 small and 3 large
5 0
3 years ago
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