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umka21 [38]
3 years ago
10

How do you SOLVE SYSTEMS OF LINEAR EQUATIONS BY SUBSTITUTION!!!!!!

Mathematics
1 answer:
Digiron [165]3 years ago
6 0
Ex: y=2x+4     <span>3x+y=9   <--Simply plug y into the second equation here and solve for x. When you find the solution for x, you can plug the solution to x into the 2nd equation to find y....Hope this helps!!!</span>
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Blonde or brunette? Explain why<br><br>(Its for my human interactions course so pls dont report it)
Trava [24]

Answer:

imo i would go with brunette because  i don't really like blondes. most ones ive met are annoying.

Step-by-step explanation:

4 0
3 years ago
Please help me with this math problem
vfiekz [6]
The function is decreasing on the interval (- infinity, + infinity).
3 0
3 years ago
I will mark brainliest for answering this question.
ser-zykov [4K]

The unit rate of speed is 52.5 miles per hour

<em><u>Solution:</u></em>

Given that On a trip to visit relatives you drive 1,115.625 miles over the course of 21  hours and 15 minutes

We know that, 1 hour = 60 minutes

21  hours and 15 minutes = 21 hours + (15/60) hours = 21 + 0.25 = 21.25 hours

So they drive 1115.625 miles in 21.25 hours

To find the unit rate of speed of your vehicle in miles per hour, divide the total miles by time taken

unit rate of speed means miles driven in 1 hour

\rightarrow \frac{1115.625}{21.25} = 52.5

So the unit rate of speed is 52.5 miles per hour

7 0
3 years ago
How can I tell, when doing synthetic division, if the binomial is<br> a FACTOR of the dividend?
Alecsey [184]

If you get 0 as the last value in the bottom row, then the binomial is a factor of the dividend.

Let's say the binomial is of the form (x-k) and it multiplies with some other polynomial q(x) to get p(x), so,

p(x) = (x-k)*q(x)

If you plug in x = k, then,

p(k) = (k-k)*q(k)

p(k) = 0

The input x = k leads to the output y = 0. Therefore, if (x-k) is a factor of p(x), then x = k is a root of p(x).

It turns out that the last value in the bottom row of a synthetic division table is the remainder after long division. By the remainder theorem, p(k) = r where r is the remainder after dividing p(x) by (x-k). If r = 0, then (x-k) is a factor, p(k) = 0, and x = k is a root.

5 0
3 years ago
Nicky bought 14.2 pounds of coffe for the coffee shop. The shop usually uses 5 times that amount of coffee during one week. How
Ede4ka [16]
The answer is 56.8
explaination:14.2 x4
56.8
he needs five units he already have 1 unit
so5 minus 4=one
so....
14.2x4=56.8//
5 0
3 years ago
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