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Sedbober [7]
1 year ago
5

What is the solution to the system of equations graphed below? y = x- 2 y = 3x - 2

Mathematics
1 answer:
rjkz [21]1 year ago
4 0

Answer:

  (0, -2)

Step-by-step explanation:

The solution to a system of equations is the point on the graph where the lines intersect.

<h3>Solution</h3>

Here, both lines have a y-intercept of -2, so intersect there. The solution is ...

  (x, y) = (0, -2)

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2 years ago
Liam is making barbecue ribs over a fire. The internal temperature of the ribs when he starts cooking is 40°F. During each hour
Soloha48 [4]

Answer: You need to wait at least 6.4 hours to eat the ribs.

t ≥ 6.4 hours.

Step-by-step explanation:

The initial temperature is 40°F, and it increases by 25% each hour.

This means that during hour 0 the temperature is 40° F

after the first hour, at h = 1h we have an increase of 25%, this means that the new temperature is:

T = 40° F + 0.25*40° F = 1.25*40° F

after another hour we have another increase of 25%, the temperature now is:

T = (1.25*40° F) + 0.25*(1.25*40° F) = (40° F)*(1.25)^2

Now, we can model the temperature at the hour h as:

T(h) = (40°f)*1.25^h

now we want to find the number of hours needed to get the temperature equal to 165°F. which is the minimum temperature that the ribs need to reach in order to be safe to eaten.

So we have:

(40°f)*1.25^h = 165° F

1.25^h = 165/40 = 4.125

h = ln(4.125)/ln(1.25)  = 6.4 hours.

then the inequality is:

t ≥ 6.4 hours.

4 0
2 years ago
My total is $190 my discount is 20% what is my total
nasty-shy [4]

Answer:

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Step-by-step explanation:

152 i think

6 0
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Read 2 more answers
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Answer:

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Step-by-step explanation:

The weighted average of the student's scores is ...

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2 years ago
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fredd [130]

Answer:

Tip Total: $ 11

Total (Bill + Tip): $ 62

Step-by-step explanation:

4 0
2 years ago
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