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e-lub [12.9K]
3 years ago
5

What is the solution to the system of equations?

Mathematics
1 answer:
Minchanka [31]3 years ago
4 0

Answer:

  (1, –5)

Step-by-step explanation:

It is relatively easy to try the offered solutions to see what works.

<u>(1, -5)</u>

  3(1) +10(-5) = -47 . . . true

  5(1) -7(-5) = 40 . . . true

(1, -5) is the solution

_____

As a check, you can try some of the other choices:

<u>(1, 5)</u>

  3(1) +10(5) ≠ -47

<u>(-1, -5)</u>

  3(-1) +10(-5) ≠ -47

<u>(-1, 5)</u>

  3(-1) +10(5) ≠ -47

None of the other choices works in the first equation, so they're not the solution.

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Idk men PLEASE HELP!
garik1379 [7]

Answer:

Let 7x be the rent paid for backhoe for seven hours.

Step-by-step explanation:

Keyword: maximum amount, the most

    Inequality symbol:  ≤

     (800 × 5) + 7x ≤ 9,000

     4,000 + 7x ≤ 9,000

     7x ≤ 9,000 - 4,000

     7x ≤ 5,000

     7x ÷ 7  ≤  5,000 ÷ 7

     x ≤ 714.29

To the nearest hundreds:

     x ≤ 700

ANSWER:  The maximum rental fee per hour  of backhoe is Php 700.00 (rounded off to the nearest hundreds).

To check if he paid less than 9,000 for the total rent:

    (800 × 5) + (700 × 7) < 9,000

    4,000 + 4,900 < 9,000

    8,900 < 9,000    (True)

7 0
3 years ago
Write a set of data with six values that has a mean of 28, median of 29, and a range of 18
Basile [38]
Mean is average example
mean of x,y,z is (x+y+z)/3

so 6 values
mean of 28
that means that they add up to 168


median means the middle number when you arrange them
range means the distance from smallest number to largest number


an example

18,27,29,29,29,36
4 0
3 years ago
Find the slope and the y-intercept of the graph of the linear equation.
pantera1 [17]

Answer:

Yintecept is 0

Step-by-step explanation:

because it's y= Mx+b

but this one is y = mx

6 0
3 years ago
Charles is 23 years older than Gloria. In 14 years he will be twice her age. How old are they now?
kirza4 [7]

Answer:

44?.. im going to get rhis one wrong

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3 years ago
IMMEDIATE HELP PLEASE, IT IS TIMED!!!!
Mazyrski [523]

Step-by-step explanation:

True

When an equation has one solution,The variable terms on both sides are the same

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