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PtichkaEL [24]
3 years ago
10

Please please please help

Mathematics
2 answers:
raketka [301]3 years ago
5 0

Answer: i cant see the answers

Step-by-step explanation:

zhenek [66]3 years ago
4 0

Answer:

the first, second, third, fourth, and fifth, answers apply to this graph

Step-by-step explanation:

The graph is a constant line from 7-10 minutes (a 3 minute break)

After the first five minutes on the graph there is a great increase in his speed. (he covered more of the race in that time up until the 7th minute)

It is true he only had one mile left - this can be shown by his graph stopping at the 4th mile on the 15th minute

there is a slow but gradual increase in his speed as he covered more of the race in the first five minutes

At the 7th minute mark he is at mile 3 - there are 4 miles to the race

_______________________________

The last one is NOT true because he has another increase in the graph at the 11th minute mark.

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The sum of two numbers is 90. The larger number is 14 more than 3 times the smaller number. Find the numbers
e-lub [12.9K]

Answer:

The numbers are 19 and 71.

Step-by-step explanation:

Let x and y represent the two numbers.  Then x + y = 90.  

Also, if we assume that the larger number is y, then y = 3x + 14.

We must solve this system of linear equations.  Since we already have the result of solution for y  (y = 3x + 14), let's use the substitution method to find the solution:

x + y = 90 becomes x + 3x + 14 = 90, or:

4x = 76.  Thus, x = 76/4, or 19.       If x = 19, then y = 3(19) + 14, or y = 71.

The numbers are 19 and 71.

Note that these add up to 90, as they must, and that 71 is 14 more than 3 times 19.

7 0
3 years ago
What value of y makes the equation true? -7/12 = y/-36
Lelechka [254]
The answer is B......
3 0
4 years ago
Product A is an 8oz. bottle of cough medicine that sells for 1.36 Product B is a 16 oz. bottle of cough medication that costs 3.
liq [111]
The 8oz because double that is 16oz and the price doubled is 2.72
5 0
3 years ago
At a local coffee shop, three coffees and two muffins cost a total of $7.00. Two coffees and four
rewona [7]

Answer:

$10.25

Step-by-step explanation:

Set up a system of equations, so 3c + 2m = 7 and 2c + 4m = 8, where c = the cost of coffees, and m = cost of muffins

To solve multiply the first equation by -2(3c + 2m=7) so you get -6c -4m = -14 now add the two equations

-6c - 4m = -14

2c + 4m = 8   notice that -6c + 2c = -4c and -4m + 4m cancels, then -14+8=-6

so we have -4c = -6 so c = $1.50

To solve for m, substitute c = 1.50 so 3(1.50) + 2m = 7, so solve for m so

4.5 + 2m = 7, 2m = 2.5, so m = $1.25

So now solve the final problem 6(1.50) + 1(1.25) = $10.25

6 0
3 years ago
What is the value of z?
devlian [24]

Answer:19

Step-by-step explanation:

5 0
3 years ago
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