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Lelechka [254]
3 years ago
9

-3 - 8+ (-4) what is the answer??

Mathematics
2 answers:
Masja [62]3 years ago
7 0
The answer to -3-8+(-4) is -15
olchik [2.2K]3 years ago
3 0

Answer:

-15

Step-by-step explanation:

add 3 and 8=11, than add -4= -15

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A first number plus twice a second number is 24. twice the first number plus the second totals 21. find the numbers.
Ulleksa [173]
We do like the following:
Set the first number is a and the second is b.
We have two equations: a+2xb=24, 2xa+b=21
And we have 2xa+4xb=48 or 2xa=48-4xb
So: 48-4xb+b=21 or -3xb=21-48=-27 and we got b=-27:(-3)=9 and a= 6
a=6 and b=9
4 0
3 years ago
2x + 3y = 2<br> y = {x+3
FrozenT [24]

The solution of the system is (-2,2)

Step-by-step explanation:

a solution is a system of equations intersecting.

on the graph you can see that the lines intersect at (-2,2)

8 0
2 years ago
Can someone help me here​
bearhunter [10]

Answer:

1.

Step-by-step explanation:

1. sin 241 = sin(61 + π) = -sin61 = -t^(1/2)

2. sin^2 + cos^2 =1, cos 61= (1-t)^(1/2)

3. [2sin^2 (x)sin(x) +2cos^2 (x)sin(x)]/2cos(x) = 2sin(x) / 2cos(x) = tan(x)

4. tan (x), x do not equal to (π/2 +or- kπ)

x do not equal to 90,270。

3 0
2 years ago
The ages of the students in a dance class are 10, 9, 11, 12, 9, 10, 9, 10, 11, 12, 8, 12, 12.
faust18 [17]

Answer:

Put the numbers in order then find the number that appears the most which is 12.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Plz help with math!!!!​
BigorU [14]

Answer:

The figure above is congruent by SSS axiom.

AB=DE (S)

AC=EF(S)

BC=DF(S)

Hence the given triangle are congrent.SSS axiom is Side.Side.Side axiom.

I think it will help you.

8 0
2 years ago
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