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3 years ago

Please help me on 7&8 and please show your work :)

Mathematics

1 answer:

Llana [10]3 years ago

5 0

7. 6/12 or 1/2 | 8. 5/12

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Which part of this graph shows a nonlinear relationship?

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3 years ago

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Find the missing factor 8b^2+7b-1=(b+1)()

shusha [124]

$8b^2+7b-1=8b^2+8b-b-1=8b(b+1)-1(b+1)=(b+1)(8b-1)$

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4 years ago

5 is a prime number of 2475 what are the other two numbers

ArbitrLikvidat [17]

$2475=3^2\cdot5^2\cdot11$

The two other prime factors are 3 and 11

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3 years ago

The law of cosines is used to find the measure of Z.

Shtirlitz [24]

Answer:

C. $Z=51^{\circ}$

Step-by-step explanation:

We have been given a triangle. We are asked to find the measure of angle Z using Law of cosines.

Law of cosines: $c^2=a^2+b^2-2ab\cdot \text{cos}(C)$ , where, a, b and c are sides opposite to angles A, B and C respectively.

Upon substituting our given values in law of cosines, we will get:

$16^2=19^2+18^2-2(19)(18)\cdot \text{cos}(Z)$

$256=361+324-684\cdot \text{cos}(Z)$

$256=685-684\cdot \text{cos}(Z)$

$256-685=685-685-684\cdot \text{cos}(Z)$

$-429=-684\cdot \text{cos}(Z)$

$\frac{-429}{-684}=\frac{-684\cdot \text{cos}(Z)}{-684}$

$0.627192982456=\text{cos}(Z)$

$\text{cos}(Z)=0.627192982456$

Now, we will use inverse cosine or arc-cos to solve for angle Z as:

$Z=\text{cos}^{-1}(0.627192982456)$

$Z=51.1566718^{\circ}$

$Z\approx 51^{\circ}$

Therefore, the measure of angle Z is approximately 51 degrees.

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3 years ago

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What is the distance between the points (13, -19) and (-10, -19) in the coordinate plane?

Blizzard [7]

Answer:

The correct answer is D.) 23 units

Step-by-step explanation:

13 + 10 = 23, units can never be negative, so you add them as positives.

Hope This Helps!

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3 years ago

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