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scoray [572]
3 years ago
11

Solve pls correctly brainliest if correct!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! (:

Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0

Answer:

y=6

Step-by-step explanation:

The equation of the line with slope 2 is y=2x+b, b is a constant which should be determined. The line passes via through points (1, 2) and (3,y)

(1, 2): 2=2+b --> b=0

So, the equation of the line is y=2x. Now, when x=3, y=6. So the line y=2x passes through points (1, 2) and (3, 6). (3,y)=(3, 6).

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Rodger gets $40 per day as wages and $4.50 as commission for ever paid of shoes he sells in a day. His daily earning goal is $11
Charra [1.4K]

112 = 40 + 4.50p

Subtract 40 from both sides

72 = 4.50p

Divide both sides by 4.50

16 = s

40 + 4.50*16 = 112

40 + 72 = 112

He would need to sell 16 pairs of shoes to meet his goal.

4 0
3 years ago
Read 2 more answers
Can anyone explain why this two is being added before the integral? Does it have something to do with integral symmetry?
PIT_PIT [208]

Yes it's exactly due to symmetry. Specifically, symmetry about the x axis.

Simply writing \displaystyle \int_{-8}^{-4}\left[\sqrt{x+8} \ \right]dx, without the 2 out front, will only get you the area of the portion shown in red (see diagram below).

The blue region has equal area of the red region due to symmetry.

So,

\displaystyle 2\int_{-8}^{-4}\left[\sqrt{x+8} \ \right]dx

represents the red and blue regions combined.

The portion in green is \displaystyle \int_{-4}^{8}\left[\sqrt{x+8} - \frac{x}{2} \ \right]dx which is the integral of the difference of the upper and lower curves over the interval -4 \le x \le 8

---------------

In all honesty, it's probably easier to integrate with respect to y since the given functions are in terms of y initially. Also, there isn't a junction point in which the curves swap places in terms of which one is larger. However, it doesn't hurt to have practice in integrating with respect to x.

If you're curious about what the y integral looks like, then it would be

\displaystyle \int_{-2}^{4} \bigg[ (2y) - (y^2-8)\bigg] dy

You can use a tool like WolframAlpha to check that both integral expressions result in 36 to help confirm that they represent the same overall area (just in different ways of course).

5 0
3 years ago
Read 2 more answers
I REALLY NEED HELP PLEASE !!!! 1. Suppose you pay $45.00 for an electronic game that has been discounted 15%. What is the origin
Lady_Fox [76]
45.00 
45/15
30.00

es que no se lo lava ien fuchi
8 0
3 years ago
Need the answer asap!!!​
aalyn [17]

Answer:

13b-12a+5 (so the last one)

Step-by-step explanation:

b-6a+12b-6a+5

13b-12a+5

5 0
3 years ago
McDonald's is the king of the burger world, as it has more hamburger joints than any other restaurant chain. In 2013, McDonald's
fgiga [73]

It is given that in 2013, McDonald's had 14267 locations in the US. It is also given that the population of the US was approximately 316.5 million citizens in 2013. Now, we know that 316.5 million=316500000.

Therefore, in order to find the number of McDonald's restaurants per capita in the US in 2013 all that we have to do is divide the number of McDonald's restaurants in 2013 with the population of the same year.

Thus, we get, number of McDonald's restaurants per capita in the US in 2013 to be:

\frac{14267}{316500000}\approx4.508\times10^{-5} (the answer has been expressed in scientific notation rounded correctly to three decimal) places.

8 0
3 years ago
Read 2 more answers
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