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liraira [26]
3 years ago
12

HELP! Geometry problems. Not understanding.

Mathematics
1 answer:
Lelechka [254]3 years ago
5 0
Copy these notes down! They will get you thru the class!

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Angle x and y are complementary. Angle X is supplementary to a 128° angle. What are the measures of angle X and angle Y? Write a
FinnZ [79.3K]

Answer:

Solve for x:  x + 128 = 180, x = 52°

Solve for y: x + y = 90 or 52 + y = 90, y = 38°

Step-by-step explanation:

In order to solve for the measures of ∠x and ∠y, you first need to remember that angles that are complementary add up to 90° and angles that are supplementary add up to 180°.  So, in order to solve for 'x', which is supplementary to a 128° angle, we can set up an equation where the sum of ∠x and 128°  = 180°:  

x + 128 = 180, subtract 128 from both sides:  x + 128 - 128 = 180 - 128, x = 52°

Knowing that ∠x + ∠y = 90° and now that ∠x = 52°, we can set up the second equation:

52 + y = 90, subtract 52 from both sides: 52 + y - 52 = 90 - 52 or y = 38°

8 0
4 years ago
Thank you it helped a lot
Lerok [7]

Answer:

You're welcome

Step-by-step explanation:

3 0
4 years ago
Read 2 more answers
Please help! I'm getting timed.
Molodets [167]
Hi there! The answer is A.

t = 2(s + 2)
To get a proper idea of the type of function this formula represents we work out the parenthesis.

Working out the parenthesis can for instance be done using rainbow technique.
t = 2s + 4

We can now see sinilarities between this function an the general function of a line in slope intercept form
y = mx + n

The function t therefore describes a line with slope 2 and y-intercept 4. Therefore the answer is A.
3 0
3 years ago
6(-2x - 1) = -(13x+2) solve for x
igomit [66]

Answer:

10

Step-by-step explanation:

-12x-12 = -13x-2

x= 10

7 0
3 years ago
Read 2 more answers
If you apply the changes below to the quadratic parent function, f(x) = x2, what is the equation of the new function? Shift 3 un
Alex17521 [72]
To apply the changes to the equation of a vertical stretch of 4 and a translation of 3 units to the right, as well as the correct answer would be choice B.

The reason for this is when you apply a vertical stretch, because it changes the y-values (which causes it to vertically stretch or appear skinnier when graphed), you would multiply 4 to f(x) which would look like 4x^2.

Then, since you have a reflection over the x-axis, you must multiply a -1 to f(x) to reflect it over the x-axis which would result in -4x^2.

Finally, it also asks to shift the graph right 3 which by moving it right, you change the x values meaning you will perform f(x-3) to achieve this (subtract the value from x when you move right, and add the value to x when you move left).

This therefore results in your answer, the new graph would be
g(x)= -4(x-3)^2 or choice B.
8 0
4 years ago
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