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LUCKY_DIMON [66]
3 years ago
5

Square root 9x+7 + square root2x=7

Mathematics
1 answer:
strojnjashka [21]3 years ago
5 0

Answer:

x=2

Step-by-step explanation:

\sqrt{9x+7\\} +\sqrt{2x}=7\\\\*By removing the roots you get\\\\ 49x^2-588x+1764=392x\\solve for x\\x=2 x=18\\x=18 is incorrect\\x=2 is the answer

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The coordinates of points M,N, and P are ....
Rainbow [258]

Answer:

(-1, -1) Let me know if the explanation didn't make sense.  

Step-by-step explanation:

If we graph the three points we can see what looks like a quadrilateral's upper right portion, so we need a point in the lower left.  This means M is only connected to N here and P is only connected to N.  So we want to find the slope of these two lines.

MN is easy since their y values are the same, the slope is 0.

NP we just use the slope formula so (y2-y1)/(x2-x1) = (-1-3)/(5-4) = -4.

So now we want a line from point M with a slope of -4 to intersect with a line from point P with a slope of 0.  To find these lines  weuse point slope form  for those two points.  The formula for point slope form is y - y1 = m(x-x1)

y-3 = -4(x+2) -> y = -4x-5

y+1 = 0(x-5) -> y = -1

So now we want these two to intersect.  We just set them equal to each other.

-1 = -4x -5 -> -1 = x

So this gives us our x value.  Now we can plug that into either function to find the y value.  This is super easy of we use y = -1 because all y values in this are -1, so the point Q is (-1, -1)

8 0
2 years ago
Can someone help me pls
Pepsi [2]

Answer:

jen

Step-by-step explanation:

Jordan's total number of sit-ups

20+24+28+32= 104

Jen's total number of sit-ups

40+48+56+62=208

divide Jen's sit-ups by Jordan's sit-ups

208/104=2

3 0
2 years ago
A flat surface of a solid figure
-BARSIC- [3]
<span>A flat surface of a solid figure is called a "face".
Your answer is <em>face.
</em>

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8 0
3 years ago
Read 2 more answers
Mrs Katie constructs a cube with 512 magnetic block students and her two classes will each make an identical cube. There are 28
devlian [24]
I take it each student is going to make a block. 
She has 25 + 28 students all together which is 53 students total
Each one requires 512 magnetic blocks

Therefore she needs 53 * 512 = 27136 blocks. 

6 0
3 years ago
Which is greater 4/5 or 60%<br><br> i need help
Kisachek [45]

Answer:

4/5 is greater

Step-by-step explanation:

60% = 60/100

4/5 = 80/100

80>60

5 0
3 years ago
Read 2 more answers
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