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notsponge [240]
4 years ago
14

Latonya swims 50 meters in 1/2 minute

Mathematics
2 answers:
ipn [44]4 years ago
6 0
S = Speed
D = Distance
T = Time
S = D/T
S = 50m/1/2
50 divided by 1/2 = 25
25 = 50/1/2
S = 25 m/min.
Citrus2011 [14]4 years ago
3 0

Answer:don’t understand

Step-by-step explanation:

Explain steps please

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Xavier drove his car 70 miles with 7 gallons of fuel. How many more miles can he drive if he added 1 gallon of fuel?
strojnjashka [21]

i think 10 more miles.

70/7=10

which means he gets 10 more miles for every gallon of fuel

8 0
4 years ago
Read 2 more answers
A recent study found that the average life expectancy of a person living in Africa is 53 years with a standard deviation of 7.5
Anon25 [30]

Answer:

0.945200708

Step-by-step explanation:

In this question, we are asked to calculate the probability that a person selected at random would live less than 65.

To solve this problem, what we need to do is to first calculate the z-score.

Mathematically, z = (x-mean)/standard deviation

According to the question, the mean is 53 years and the standard deviation is 7.5

Substituting these values in the z-score equation:

Z-score = (65-53)/7.5 = 12/7.5 = 1.6

We proceed to use the z-score table to obtain the probability. Using the table, z score of 1.6 corresponds to a probability of

0.945200708

7 0
3 years ago
Evaluate 3x^2 - x for x = -2​
Butoxors [25]

Answer:

3x^2 - x

3 \times  - 2 \times  - 2 - 2

(3 \times  - 2 \times  - 2) -  ( - 2)

12 + 2 = 14

4 0
3 years ago
I'm having trouble solving this reflection please help
hammer [34]
You reflect the triangle across the x axis. Are you looking for the points or what it reflects into?
4 0
3 years ago
Read 2 more answers
Solve 4x + 11 = k for x.<br> O A. x-4-11<br> B. x= k-7<br> C. x = 4k - 44<br> D. x =<br> K-11<br> 4
Arisa [49]

Answer:

x= 1/4k + −11/4

Step-by-step explanation:

4x+11=k

Step 1: Add -11 to both sides.

4x+11+−11=k+−11

4x=k−11

Step 2: Divide both sides by 4.

4x/4 = k−11/4

x=1/4k + −11/4

Answer:

x=1/4k + −11/4

OR

If you are solving for K:

Let's solve for k.

4x+11=k

Step 1: Flip the equation.

k=4x+11

Answer:

k=4x+11

5 0
3 years ago
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