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Darina [25.2K]
2 years ago
6

Can someone explain these to me?

Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
4 0

Answer:

Question 2: 4^12

Question 3: (9/64x)^11

Step-by-step explanation:

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Use the elimination method to solve the system of equations.
ExtremeBDS [4]

Answer:

Option D. (8, – 4)

Step-by-step explanation:

3x + 4y = 8 ..... (1)

x – y = 12.... (2)

To solve the above equation by elimination method, do the following:

Step 1:

Multiply equation 1 by the coefficient of x in equation 2 i.e 1.

Multiply equation 2 by the coefficient of x in equation 1 i.e 3. This is illustrated below:

1 × Equation 1

1 × (3x + 4y = 8)

3x + 4y = 8 ...... (3)

3 × Equation 2

3 × ( x – y = 12)

3x – 3y = 36......(4)

Step 2:

Subtract equation 3 from equation 4. This is illustrated below:

. 3x – 3y = 36

– (3x + 4y = 8)

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

– 7y = 28

Divide both side by the coefficient of y i.e –7

y = 28/–7

y = – 4

Step 3:

Substitute the value of y into any of the equation to obtain the value of x. In this case, we shall substitute the value of y into equation 2 as shown below:

x – y = 12

y = –4

x – (–4) = 12

x + 4 = 12

x = 12 – 4

x = 8

Therefore, the solution to the equation above is (8, – 4)

4 0
3 years ago
The height, h, of an object that is thrown upwards into the air can be represented as h = 0.5at2 + v0t + h0, where a represents
wel

Answer:

ok so  this awnser is v7a

Step-by-step explanation:

5 0
2 years ago
Help me and I will give u brain..................​
Lemur [1.5K]
It would probably be B
6 0
3 years ago
ASAP WILL MARK BRAINLIEST!!!!
Savatey [412]
I’m going to guess D....
6 0
3 years ago
Read 2 more answers
Please help me, I am so confused. Thanks​
miskamm [114]

Answer:

c. 80

Step-by-step explanation:

cos x = sin(x-70)

cos x = cos [90-(x-70)]

cos x = cos (90-x +70)

cos x = cos 160 -x

x= 160-x

2x = 160

x =80

8 0
3 years ago
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