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Jlenok [28]
3 years ago
8

Please please please help me with this question !! Will give brainliest !!

Mathematics
2 answers:
lana [24]3 years ago
8 0
Hahahahahagagqgqhahjahahaha
wolverine [178]3 years ago
7 0

Answer:

b)

Step-by-step explanation:

The slope is negative. You can see this when doing rise over run. pick two exact points to do this. You will see that you had to go vertically down (meaning negative) by three and to the right horizontally by 4 (meaning positive. Therefore, the slope is -3/4

You can find the coefficient by looking at the y-intercept. The line crosses the y axis at (0,4) so the equation will now read: y=-3/4x+4

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Solve the system by substitution.<br> y = 5x<br> y = 9x + 4
SVEN [57.7K]

Answer:

(-1, -5)

Step-by-step explanation:

\left \{ {{y=5x} \atop {y=9x+4}} \right.

1. We must calculate x, for that we must substitute y, so we have:

5x=9x+4

2. Now we solve the equation.

5x-9x=4

-4x=4

x=-1

3. Now we must calculate y

y=5x

y=5(-1)

y=-5

And the answer is (-1, -5)

5 0
3 years ago
.
Eva8 [605]

Answer:

Infinite solutions

Step-by-step explanation:

Given is a system of equations.

-3x+y=10

-6x+2y=20

Equation I when multiplied by 2, gives as

-6x+2y =20 which is the same as equation 2 given.

This gives the two lines are not intersecting nor parallel.  But the two lines are coincident with each other.

Hence each point on the line is solution.

Infinite solutions.

Let us try to solve and verify this

BY substitutition we have y = 3x+10, substitute in II

-6x+2(3x+10) =20

Or -6x+6x+20=20

20=20 Thus for any x, this becomes true.

Hence infinite solutions.

8 0
4 years ago
Read 2 more answers
Weight of a rock: In a geology course, students are learning to use a balance scale to accurately weigh rocks. One student plans
dusya [7]

Answer:

The first student, with 20 measurements, will have the more precise interval due to the larger sample size.

Step-by-step explanation:

Margin of error of a confidence interval:

The margin of error of a confidence interval has the following format:

M = z\frac{s}{\sqrt{n}}

In which z is related to the confidence level, s to the standard deviation and n to the sample size.

The margin of error is inversely proportional to the square root of the sample size, which means that a larger sample will lead to a lower margin of error, that is, to a more precise interval.

In this question:

One student will use 5 measurements, other 20. The first student, with 20 measurements, will have the more precise interval due to the larger sample size.

5 0
3 years ago
Find the Area and Perimeter of both figures!
Leokris [45]

where is the figures to solve.

4 0
3 years ago
5c-15 factor out the coefficient of the variable
SVEN [57.7K]
First let's set up our equation properly.

0=5c-15

Now we can get the variable and constant alone by adding 15 to both sides.

5c=15

Next we divide 5 to both sides to get our variable c alone.

c=3
6 0
3 years ago
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