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OlgaM077 [116]
3 years ago
10

When solving equations what do you use to isolate the variable?

Mathematics
1 answer:
weeeeeb [17]3 years ago
8 0

Answer:

use inverse operations (answer choice b)

Step-by-step explanation:

the use of inverse operations allow for things to cancel out so that you can be left with the variable and a single value

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Find the x-intercepts and y-intercept for the parabola below. Write answers as (x,y) coordinates.
poizon [28]
Assuming the function is y=2x^2-4x-6
the x intercepts are where the graph hits the x axis or where y=0
the y intercepts are where the graph hits the y axis or where x=0


x intercepts
set y=0 and find x
0=2x^2-4x-6
0=2(x^2-2x-3)
what 2 numbers multiply to get -3 and add to get -2?
-3 and 1
0=(2)(x-3)(x+1)
set to 0
0=x-3
3=x
0=x+1
-1=x

x intercepts are at x=-1 and 3 or the points (-1,0) and (3,0)



y intercepts are where x=0
set x=0
y=2(0)^2-4(0)-6
y=0-0-6
y=-6
y intercept is at (0,-6)



x intercepts are at (-1,0) and (3,0)
y intercept is at (0,-6)
5 0
3 years ago
Kennedy’s car used 11 gallons to travel 319 miles. How many gallons of gas would she need to travel 406miles
makvit [3.9K]

In the US, the gallon is a unit of measurement for liquids like milk, fuel, and water. If the petrol in your automobile is nearly empty, you should stop and get at least a few more gallons. A gallon is equal to 4 quarts, or 3.785 liters, of liquid.

<h3>Explain about the gallons?</h3>

Eight pints make up a gallon, which is a unit of measurement for liquids. It is equivalent to roughly 4.546 liters in Britain. It is roughly equivalent to 3.785 liters in America.

A gallon of water in the US weighs 8.345 pounds or 3.785 kilogram at 17 degrees Celsius, while a gallon of water in the imperial system weighs 10.02 pounds or 4.545 kilogram. The Imperial gallon weighs 16.6% less than 1 US gallon (gal).

Gas consumption is affected by driving on hills and mountainous terrain, by the state of the roads (such as stop-and-go city traffic or highway travel), and by the weather (such as high winds or snow). We can safely infer that under a number of

Answer is 14 gallons of gas need to travel 406 miles

To learn more about gallons refer to:

brainly.com/question/26007201

#SPJ9

5 0
1 year ago
The sum of 2 numbers 36 the smaller number is 18 less than the larger number what are the numbers
just olya [345]

Step-by-step explanation:

<em>=</em><em>></em><em> </em><em>x+</em><em>x=</em><em>3</em><em>6</em><em> </em><em> </em>

<em>=</em><em>></em><em> </em><em>2</em><em>x</em><em>-</em><em>1</em><em>8</em><em>=</em><em>3</em><em>6</em>

<em>=</em><em>></em><em>2</em><em>x</em><em>=</em><em>1</em><em>8</em>

<em>=</em><em>></em><em>9</em>

<em> </em><em> </em><em>check</em>

<em> </em><em> </em><em>2</em><em>(</em><em>9</em><em>)</em><em>+</em><em>1</em><em>8</em>

<em> </em><em> </em><em> </em><em>1</em><em>8</em><em>+</em><em>1</em><em>8</em>

<em> </em><em> </em><em> </em><em>=</em><em>3</em><em>6</em>

<em>i</em><em> </em><em>hope </em><em>it's </em><em>right</em>

<em> </em><em> </em>

3 0
3 years ago
7th grade math help me pleaseeee
padilas [110]

Answer:

The answer is D

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If you sell 30 items at $200 a piece and your commission rate is 20%, how much commission do
jarptica [38.1K]

Answer:

$1200

Step-by-step explanation:

There are 2 ways I immediately think about to solving the problem.

1) You multiply 30 and 200 , then multiply the product by .2 (i.e. 20%)

This way, you'll find out what the total amount was($6,000), then you multiply it by your commission rate.(.2 or 20%) to find your total profit($1,200).

2) You multiply 200 by .20 , then multiply the product by 30.

This way, you'll find out what your commission would be for a single item($40), then multiply by the total items sold (30) to find your total profit($1,200).

5 0
3 years ago
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