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2 years ago

Which of the following ordered pairs represents the x-intercept of the equation y = 2x - 8?

2 answers:

4 0

Y=2x-8, so ti find the x-intercept, you would plug zero into y and solve for x:

0=2x-8 plug 0 in for y and now add 8 to both sides
8=2x now you have to divide by 2
4=x
(4,0)

nikdorinn [45]2 years ago

3 0

The answer is (0,-8)

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Basketball shoes are on sale for 22% off. What is the regular price if the sale price is $42?

artcher [175]

Answer:

x =53.85

Step-by-step explanation:

Let x be the original price

If the price is 22% of, you will pay 100% -22% = 78%

x * 78% = 42

Change to decimal form.

78x = 42

Divide each side by .78.

78x/.78 = 42/.78

Rounding to the nearest cent

x =53.85

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2 years ago

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Katena32 [7]

5 degrees is your answer.

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2 years ago

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Can you please help me

nika2105 [10]

Answer:

90 degrees

Step-by-step explanation:

A triangle equals 180

180 - 60

= 120

120 - 30

= 90

Also you can easily get the answer without doing any math because you can see the angle is a right angle

Right angles equal 90

Hope this helps dude

6 0

2 years ago

Find the distance between (3,-3) and (2,7)

yarga [219]

Answer:

$\sqrt{101} = D$

Step-by-step explanation:

Method #1

We can draw a <em>right triangle</em> on the graph upon where the points are located and use the Pythagorean Theorem:

${a}^{2} + {b}^{2} = {c}^{2}$

${1}^{2} + {10}^{2} = {c}^{2}$

$1 + 100 = {c}^{2}$

$101 = {c}^{2}$

$\sqrt{101} = c$

* Whenever we talk about distance, we ONLY want the NON-NEGATIVE root.

_______________________________________________

Method #2

Or, we can use the Distance Formula:

$\sqrt{[-x_1 + x_2]^{2} + [-y_1 + y_2]^{2}} = D$

[2, 7] [3, −3]

$\sqrt{[-3 + 2]^{2} + [3 + 7]^{2}} = D$

$\sqrt{[-1]^{2} + 10^{2}} = D$

$\sqrt{1 + 100} = D$

$\sqrt{101} = D$

** You see? It does not matter which method you choose, as long as you are doing the work correctly.

I am delighted to assist you anytime.

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2 years ago

Difference between cylinder and cone formula

seropon [69]

If your trying to find area....
Cylinder formula is
V= (Pie) 3.14 X r2 X h
[volume = pie 3.14 times the radius squared times the height]
Cone formula is
V= (Pie) 3.14 X r2 X h / 3
[volume = pie 3.14 times the radius squared times the height then divide that answer by 3 ]

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2 years ago