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qaws [65]
3 years ago
13

(-3, 11) a solution to the systems of equations: x – 3y = -36 and 3x + 4y = 48 true or false

Mathematics
2 answers:
Cloud [144]3 years ago
3 0

Answer:

TRUE and FALSE  (please look at step-by-step)

Step-by-step explanation:

How to know if it's true or false, you just simply plug in the given numbers to the x and y values.

x = -3

y = 11

for the x - 3y = -36 equation:

-3 -3(11) = -36

-3 - 33 = -36

This equation is true.

for the 3x + 4y = 48 equation:

3(-3) + 4(11) = 48

-9 + 44 = 35

This equation is false.

Nutka1998 [239]3 years ago
3 0
This equation is false
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The radius of the base of a cylinder is 28 cm and its height is 48 cm. Find the surface area of the cylinder in terms of π.
yarga [219]
Area of the bases


<span>2π<span>r2</span>=2π∗784=1568π


</span>circumference of base


<span>2πr=56π


</span>extension of the height


<span>2πr∗h=56π∗48=2688π


</span>bases plus none base surface is total surface


<span><span>1568π+2688π=4256π</span></span>
4 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (7,-6)(7,−6) and has a slope of -2−2?
kari74 [83]
Is the slope really -2-2? Or is that a miss type?
7 0
2 years ago
For what value of x would the expression below be undefined? 2x − 15 x + 9
Naddik [55]
Hey there!

I'm assuming your expression is actually \frac{2x - 15}{x + 9}. If it's not, let me know and I'll be happy to help you out further. 

If x were equal to –9, your expression would be undefined. If you solve it with this value plugged in for x, you will get the following: 

\frac{2x - 15}{x + 9}

\frac{2(-9) - 15}{(-9) + 9}

\frac{-18 - 15}{0}

\frac{-33}{0}

error

You can't divide anything by zero. This expression would be undefined if x were –9 since it makes the denominator zero. Therefore, x ≠ –9. 

Hope this helped you out! :-)
7 0
3 years ago
Please please please helpp
svp [43]

Answer:

I haven't done expressions in a while but I say the safest bet would be D.

6 0
2 years ago
Read 2 more answers
PLEASSEEE HELP MEEEEE
Bess [88]

Answer:

47°

Step-by-step explanation:

a staight angle equals 180 degrees

180=6x+29+3x+124

x=3

18+29=boc

boc=47

btw, if u know how to do my question could u plz help

thx

8 0
3 years ago
Read 2 more answers
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