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Furkat [3]
3 years ago
13

I need help working question 8. I don't understand how to start it

Mathematics
1 answer:
Lina20 [59]3 years ago
8 0
Why don't you first try to use the cosine law to solve for an angle and then make use of the sin law to solve for the remaining angles.

Cosine law

C^2 = A^2 + B^2 - 2AB(cos C)
Solve for cos C, and then take the inverse of the trig ratio to solve for the angle.

Then set up a proportion like you have done using the sin law and solve for another angle. Knowing the sum of all angles in a triangle add up to 180 degrees, we can easily solve for the remaining angle.
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(1.5×10^3)+(2.5×10^2) in standard form​
Tcecarenko [31]

Answer: 2.65·10^-2

Step-by-step explanation. : 1.5·10^-3= 0.0015 and 2.5·10^-2= 0.025.

Sum is 0.0265

7 0
3 years ago
Find the intercepts.<br> . (-1,5) and (-3,-5)
Firdavs [7]

Answer:

x-intercept: (-2, 0), y-intercept: (0, 10)

Step-by-step explanation:

First, we need to find the equation of this line. The formula to find the slope is:(y1-y2)/(x1-x2). Substituting the real numbers for this formula, (5-(-5))=10, (-1-(-3)=2. 10/2=5.

This means that the slope of this line is 5.

To find the complete equation for this line, we just need to plug in the x-value and add whatever needs to be added to attain the y-value. (You can plug in any x-value/y-value available.)

5=5(-1)+?

-5+<u>10</u>=5.

The complete equation for this line is y=5x+10.

From here, the y-intercept is easy, because the number after the coefficient and variable (5 and x) are before the y-intercept (in standard form). The <em><u>y-intercept is (0, 10)</u></em> because if you plug in 0 for the x-value, you will get 10 as your y-value.

On the other hand, if you plug in 0 for your y-value and solve it out, you will get the x-intercept.

0=5x+10

-10=5x

x=-2

So the <em><u>x-intercept is (-2, 0)</u></em>.

5 0
3 years ago
Please help! If possible, please word your explanation simply.
Nesterboy [21]

Answer: It is because if ∠N and ∠K are congruent and are same in size and shape.

8 0
2 years ago
Read 2 more answers
The ratio of hens to rabbits in Mr. Potter's barn is 3 to 5. How many rabbits are in the barn if there are 27 hens?
kupik [55]
There are 45 rabbits
5 0
2 years ago
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Exercise 8.12 introduces data on the average monthly temperature during the month babies rst try to crawl (about 6 months after
Afina-wow [57]

Answer:

The point has a high leverage

Step-by-step explanation:

The point has a high leverage as it would act as an infinitesimal point that will have a very huge/drastic  impact on the fit of the model, and this impact can be seen in such ways as listed below :

  • Smaller coefficient of determination
  • Higher sum of squares error

removing this point will eliminate these drastic impact and make the correlation to be better.

5 0
3 years ago
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