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kirza4 [7]
2 years ago
6

Which pair of angles are vertical angles?

Mathematics
1 answer:
Vitek1552 [10]2 years ago
8 0
Answer is C. HMG and LMK
see attached picture to explain
Vertical angles are congruent and opposite of each other where two lines cross

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The difference between two numbers is 2 and their product is 224. What are the numbers?
Sati [7]

Let x,y be the two numbers. We have two pieces of information:

x-y=2 (the difference between the two numbers is 2)

xy=224 (their product is 224)

From the first equation, we can deduce x=y+2

If we plug this expression in the second equation, we have

xy = (y+2)y = 224 \iff y^2+2y-224 =0

If you solve this equation with the usual quadratic formula you get the solutions

y=-16,\quad y=14

So, you have the following couple of solutions, recalling that x is 2 more than y:

\begin{cases} x = -14\\y=-16\end{cases},\quad\begin{cases} x = 16\\y=14\end{cases}

4 0
3 years ago

zhuklara [117]

Step-by-step answer:

Given:

A triangle

Perimeter  = 60 cm

longest side = 4* shortest side (x)

Solution:

longest side = 4x

shortest side = x

third (intermediate side = 60 -x -4x = 60-5x

The triangle inequality specifies that the sum of the two shorter sides must be greater than the longest side to form a triangle.  Hence

x + y > 4x

x + 60-5x > 4x

60 - 4x > 4x

8x < 60

x < 60/8 = 7.5, or

x < 7.5

Therefore to form a triangle, x (shortest side) must be less than 7.5 cm.

Examine the options: both 7 and 5 are both less than 7.5 cm.

40, 30 and 25 all have a problem because the longest side (4 times longer) will exceed the perimeter of 60.

Now also examine cases where 4x is NOT the longest side, in which case we need

4x>=y

or

4x >= 60-5x

9x >=60

x >= 6.67

so x=5 will not qualify, because 4x will no longer be the longest side.

The only valid option is x=7 cm

The side lengths for x=7 and x=5 are, respectively,

(7, 25, 28)

5, 20, 35  (in which case, the longest side is no longer 4x=20, so eliminated)

7 0
3 years ago
Select all of the following that represent quadratic expressions:
suter [353]
C. (x + 2)(x + 1)

it can be turned into an equation :)
7 0
3 years ago
Help me for the love of god
Colt1911 [192]

Answer:

(x, y) --> (x + 4, y - 3)

Step-by-step explanation:

The x value concerns left and right, while the y value concerns up and down. Adding to x makes it move right, and adding to y makes it move up.

3 0
3 years ago
Write the eguation of the line through (-8,-6) with slope = -5
Marta_Voda [28]

Answer:

Y=-5x-46.

Step-by-step explanation:

-5 is the slope, so Y=-5x+b. If you plug in (-8,-6), you get -6=40+b, so b has to be -46 for that to be true, I think.

7 0
2 years ago
Read 2 more answers
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