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lapo4ka [179]
3 years ago
10

Does anyone know the answer to this.

Mathematics
2 answers:
dem82 [27]3 years ago
5 0

Answer:

D

Step-by-step explanation:

i solved it

gayaneshka [121]3 years ago
4 0

Answer:

D

PLZ MARK AS BRAINLIEST

Step-by-step explanation:

FIRST STEP:

4*3 =12

6.5*3 =19.5

SECOND STEP:

21*12*19.5 =4914

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Solve using substitution method x-y=11;3x+10y=-6<br> explain please
Tatiana [17]
Ok so for starters you want to choose an equation and solve for a variable.
So, I am going to choose x from the first equation.
Add y to both sides and you get x=11+y
Next, substitute 11+y for x in the other equation so you get...
2(11+y) +10y=-6
Next distribute the 2 throug the 11 and the y
22+2y+10y=-6
12y=-28
y=-28/12
reduce this fraction to make this easier.
y=-7/3
Now plug in why to either of the equations to find x
x-(-7/3)=11
x+7/3=11
x=11-(7/3)
x=(33/3)-(7/3)
x=26/3
so x = 26/3 and y = -7/3
you can also check to see if this is correct by substituting each of these values into the equations.
6 0
3 years ago
Can someone help me with this please?
Ksivusya [100]
The equation is y=3x-2
4 0
3 years ago
Look at the picture , may you please help me :)
serg [7]
Answer 3:2 

14 And 33
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3 0
3 years ago
Read 2 more answers
Please answer thanks
nirvana33 [79]

Answer:

10

Step-by-step explanation:

it's kinda hard to explain

3 0
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On two tests so far this year, a student received a 78 and a 93. The student wants an average between 80 and 90 inclusive. What
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<span>240 <= 171 + x <= 270
and now subtract 171 from all and get
69 <= x <= 99
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