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Rus_ich [418]
3 years ago
9

System by substitution. Tar 7x - 3y=8 y=3x

Mathematics
1 answer:
valentina_108 [34]3 years ago
8 0

Answer:

3k

Step-by-step explanation:

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Factor:14x3 – 21x
Vlada [557]
7x (2x^2 - 3) is your answer my dude/lady
7 0
3 years ago
I need help solving #9 &amp; #11! It's geometry but I'm just really stuck<br><br>​
Vikentia [17]

Answer:

9)x=11 y=3

11)x=18 y=5

Step-by-step explanation:

9) 9x+25=13x+19                   13x-19+17y+5=180

   9x+44=13x                         129+17y=180

   44=4x                                 17y=51

   11=x                                     y=3

11) 49+3x=7x-23                    3x=11y-1

7 0
3 years ago
PLEASE HELP! AS SOON AS POSSIBLE I HAVE TO BE DONE IN 10 MINS !
jolli1 [7]

Answer:

D

Step-by-step explanation:

6 0
2 years ago
A cake has circumference of 25 1/7inches. What is the area of the cake? Use 22/7 to approximate π. Round to the nearest hundredt
bixtya [17]
We know that
area of the circle=pi*r²

circumference==2*pi*r----------> r=circumference/(2*pi)
circumference=25 1/7 in----> (25*7+1)/7----> 176/7 in
r=(176/7)/(2*22/7)----> r=176/44----> r=4 in

area of the circle is equal to the area of the cake
area=pi*r²---> (22/7)*4²-----> area=50.29 in²

the answer is
50.29 in²
5 0
3 years ago
Please help me on this question (7th grade math) show your work
lakkis [162]

You can take two of the x and y on the table to find the slope:

y2 - y1 / x2 - x1

Lets use (3, 12) and (4, 15)

15 - 12 / 4 - 3

3/1

The slope is 3

Now you can use the point-slope formula to find the equation: y - y1 = m(x - x1)

y - 9 = 3(x - 2)

y - 9 = 3x -6

y = 3x + 3

So you are correct with choice B.

Hope this helped! Mark as Brainliest Please! :)))

6 0
3 years ago
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