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nata0808 [166]
2 years ago
11

Use the elimination method to solve the system of equations. Choose the correct ordered pair. 

Mathematics
2 answers:
maksim [4K]2 years ago
8 0
C (2,1)  it is this add both equations it will give you this

algol132 years ago
6 0
4x + 8y = 16
4x - 8y = 0
-----------------add
8x = 16
x = 16/8
x = 2

4x + 8y = 16
4(2) + 8y = 16
8 + 8y = 16
8y = 16 - 8
8y = 8
y = 8/8
y = 1

solution is (2,1)

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Please help me!!!!! How do you get 67.3 and 112.7 from .9228
antoniya [11.8K]

Answer and Step-by-step explanation:

You are correct in that we need to use the Law of Sines: \frac{c}{sinC} =\frac{b}{sinB}=\frac{a}{sinA}.

Here, when we use the Law of Sines, we have: \frac{28}{sin(63)}=\frac{29}{sinB}.

Cross multiply:

(sinB) * 28 = (sin63) * 29

28sinB ≈ 25.839

sinB ≈ 0.9228

Now, in order to solve for B, we need to use inverse sin (sin^{-1}):

sin^{-1}(sinB)=sin^{-1}(0.9228)

The sines on the left cancel out, and we're left with:

B ≈ 67.3 degrees

Now, one thing to keep in mind when doing Law of Sines is that there is potentially more than one answer possible for the degree measure. The other degree measure can be found by subtracting this one from 180:

180 - 67.3 = 112.7 degrees.

Hope this helps!

7 0
3 years ago
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Temka [501]

Answer:

1-a2

1-5x2

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Step-by-step explanation:

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Pls help I will give Brainlyest
baherus [9]

Answer:

FALSE

Step-by-step explanation:

If p could equal 10, 20, 30 or 40 lets put each of them in the expression 7.4p<=74

1. 7.4 times 10 equals 74 so that work✅

2. 7.4 times 20 equals 148 so that does not work X

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