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r-ruslan [8.4K]
3 years ago
5

Pythagorean Theorem:

class="latex-formula"> +b^{2} =c^{2} Question 8 options:
\sqrt{26} \\\\\sqrt{89}

8
5

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0
:::::::::::::::::::::::::::::
Jlenok [28]3 years ago
5 0

distance formula:

\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}

points:

(-4, -1) and (4,3)

\sqrt{(-4-4)^{2}+(-1-3)^{2}}

\sqrt{(-8)^{2}+(-4)^{2}}

\sqrt{64+16}

<h2>= \sqrt{32}</h2>

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-8x - 8y = 0 and -5x - 4y = 5. Solve the system of equations
Rashid [163]

Answer:

x=-5, y=5 or (-5,5)

Step-by-step explanation:

We can do elimination with this

this means we should first multiply -5x-4y=5  by 2

this would make it -10x-8y=10

we can now subtract this from the original equation

-8x-8y=0 - (-10x-8y=10)

the ys would cancel out

so this would equal

2x=-10

x=-5

now we can plug this back into the equation to find y

-8(-5)-8y=0

40-8y=0

-8y=-40

y=5

4 0
3 years ago
Read 2 more answers
What is -10p+10 equal
sashaice [31]

Answer:

0

Step-by-step explanation:

5 0
3 years ago
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Can someone please please answer this and explain it? my math teacher didn’t :( will give brainliest points for explanation!!! (
AnnZ [28]

Answer:

QR = 1

Step-by-step explanation:

PR = PQ + QR

PR = x + 19

PQ = 9

So now put what you know in the equation above.

PR = 9 + 2x + 19

PR also equals x + 19

so

x + 19 = 9 + 2x + 19

x + 19 = 2x + 28

19 - 28 + x = 2x

-9 + x = 2x

-9 = 2x - x

-9 = x

===================

QR = 2x + 19

QR = 2*-9 + 19

QR = -18 + 19

QR = 1

This really is kind of a nasty question. You don't expect to get a minus number of x.

8 0
3 years ago
What does k equal in kx+2y=k; if (2,-2)
Aleks [24]
K(2)+2(-2)=k
2k-4=k
+4 +4
2k=k+4
-k -k
K=4
7 0
3 years ago
Read 2 more answers
A population of 1,000 students spends an average of $10.50 a day on dinner. The standard deviation of the expenditure is $3. A s
Yakvenalex [24]

Answer:

expected value is the mean : 10.5

Standard error for the sampling distribution : 0.375

it has a bell-shaped curve  with 99.7%  of the values between  9.375  and 11.625

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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