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Leya [2.2K]
3 years ago
8

Can someone please help me with these ?

Mathematics
1 answer:
Pavel [41]3 years ago
7 0

Answer:

Step-by-step explanation:

11)  \sqrt{8x+33} =3\\8x+33=9\\8x=-24\\x=-3

Subtract 4 from both sides.  Square each side.  Subtract 33 from both sides.  Divide each side by 8.  Your answer is -3.

12)  7x-17=x^2-2x+1\\0=x^2-9x+18\\0=(x-6)(x-3)\\x=6,    x=3

Square both sides.  Put all numbers on one side of the equation so that you can be equal to zero.  Factor out and solve for x.

You might be interested in
JIMMMMMM
Vitek1552 [10]
>= means greater than or equal to
<= means less than or equal to

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

Part A

The graph of y >= -3x+3 will have a solid boundary line and the shading will be above the boundary line.

The boundary line y = -3x+3 has a negative slope so it moves down as you read it from left to right. It goes through the points (0,3) and (1,0)

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

The graph of y < (3/2)x - 6 will have a dashed or dotted boundary line. The shading is below the boundary.

The graph y = (3/2)x-6 goes through the two points (0,-6) and (2,-3)

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

If you graph both y >= -3x+3 and y < (3/2)x - 6 together, you get what you see in the attached image. This solution shaded region is the result of the overlapping prior shaded regions. 

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

Part B

Plug (x,y) = (-6,3) into each inequality to see if we get a true inequality or not

For the first inequality we have
y >= -3x+3
3 >= -3*(-6)+3
3 >= 18+3
3 >= 21
which is false. The value 3 is not larger or equal to 21. So right off the bat we know that (-6,3) is NOT a solution. It is NOT in the solution region.

Let's check the other inequality just for the sake of completeness
y < (3/2)x - 6
3 < (3/2)*(-6) - 6
3 < -9 - 6
3 < -15
this is also false. The value -15 is smaller than 3, since it is to the left of 3

We're given more evidence that (-6,3) is NOT in the solution area. It is outside of both shaded areas. 

7 0
3 years ago
Read 2 more answers
Calculate 85% of 2 500m
vaieri [72.5K]

Answer:

Step-by-step explanation:

85% of 2500 m

= 85/100 × 2500 = 2125 m

hope this helps

plz mark it as brainliest!!!!!!

6 0
3 years ago
Read 2 more answers
What is the slope of the line?
Vesnalui [34]
It's a flat horizontal line so the slope is 0

Slope = rise/run = 0/run = 0

The "run" can be any number you want as long as it's not 0. 
4 0
3 years ago
Read 2 more answers
Order the following numbers from least to greatest 1.7, -2, -11/4, -0.5, ⅔ (hint: draw a number line)
JulsSmile [24]

The answer is A. I hope this helps, have a great day!

4 0
3 years ago
Read 2 more answers
Heelp me im struggling
olga nikolaevna [1]

Answer:

b. -30

Step-by-step explanation:

the reason why it is B is because the operation in front of the number that stands alone without being a constant number that increases (or decreases) like the number 2, it has an x next to it which means that the number 2 is going to increase at a constant rate.

<em>hope it helps:)</em>

6 0
3 years ago
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