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Mashcka [7]
3 years ago
12

Write the quadratic equation in standard form.

Mathematics
1 answer:
finlep [7]3 years ago
4 0

Step-by-step explanation: If we want to put this in standard form, we first want to add 2x² to both sides of the equation to get 2x² + 5x - 17 = 0.

Notice that I have set up the left side of the equation in descending order of powers. In other words, first the x² term, then the x term, then the constant term.

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Find an equation of the line that has a y intercept of -2 and is perpendicular to the graph of the line x - 2y = 5 ?
neonofarm [45]
First, you'd get x-2y=5 into y=mx+b form. Which would be done like this:
-2y=-x+5 (subtract x in order to get it to the other side
-2y/-2=-x/-2+5/-2 (Divide everything by -2 in order to isolate y)
y=1/2x+-5/2 
Once you're done with that, you just have to replace the y-intercept, and find the negative reciprocal of our slope (1/2), which would be -2
This then makes your answer
y=-2x-2
5 0
4 years ago
Expand the following expression 8(3x+10y)
nalin [4]

Answer:

8(3x+10y)

the answer is 24x+80y

4 0
3 years ago
Read 2 more answers
How do you solve 10≤2x≤x+9? The answer says it's 5≤x≤9 but i have no idea how it got there
Tanya [424]

Answer:

Step-by-step explanation:

so why this kind of problem is so confusing is b/c it's 2 problems in one

if you were to expand this it look like this

10 ≤2x

and

2x ≤x+9

This is really saying.. that x has a range.. and that the 1st equations is the lower stop point,  and that the 2nd equations is the upper stop point

once it's taken apart.. I bet you can solve it pretty quickly.

5≤x

and

x ≤9

then just put it back together in that confusing .. yet handy way to write it,

5≤x≤9

5 0
3 years ago
Evaluate 44 + 5 x (4^2 ÷ 8).
vitfil [10]

Answer:

2(5x+22), I looked it up

6 0
2 years ago
, 8 technicians can test 560 samples in 36 hours. How long
Yakvenalex [24]

Answer:

0.75 days (im a bit unsure but i tried my best, hope this helps :) )

Step-by-step explanation:

If it takes 8 technicians 36 hours to test 560 samples, find how many technicians can test 525 samples.

8: 560

x: 525

x= 7.5 (which is considered 7)

Then, find how long it takes to sample 525 samples, when 560 are done in 36  hours;

560: 36

525: x

x= 33.75 (which is considered 34 hours)

The last step is to check how long 15 technicians take to sample 525 samples when 8 can do the same number in 34 hours. this is inverse proportion so dont forget to flip one numerator and denominator

8; 34

15; x

it will become

15:34

8: x

x= 18 hours

Divide by 24 for days hence 0.75 days

5 0
4 years ago
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