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3 years ago

Example

1 answer:

5 0

Because 5(1.50) is equal to 7.50 and they subtract it from both sides so that they can be left with the stapler and how much was spent on the stapler. You can replace d+7.50-7.50 with d because 7.50-7.50 is equal to zero

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Please solve this by solving systems by elimination<br><br><br>6x+3y=-18<br><br>7x+7y=0

gavmur [86]

Answer:

Step-by-step explanation:

6x + 3y = -18

Taking 3 common from left side

so, 3(2x+y) = -18

2x+y = -18/3

2x+y = -6 (equation 1)

and, 7x + 7y = 0

Taking 7 as commom from left side

7(x + y) = 0

x + y = 0/7

x + y = 0 (equation 2)

now , by using elimination method

subtracting equation2 from equation1

2x + y - (x + y)= -6 - 0

2x + y - x - y = -6

x = -6

so, x = -6

substituting value of x in equation 1

2(-6) + y = -6

-12 + y = -6

y = -6 +12

y = 6

hence, the value of x = -6

and value of y = 6

7 0

3 years ago

All of the middle school mathletes solve math problems at the same pace. Working together, six mathletes complete all of the sum

guapka [62]

Answer:

5 1/2 hours

Step-by-step explanation:

by a factor of 5 means times 4

6*4=24

22/4=5.5 hours

8 0

3 years ago

A dessert recipe calls for 2 cups of milk and makes 5 servings. How many cups of milk are needed for 8 servings?

diamong [38]

Answer:

4, I went down first. It is coming by 1/2. Then I went up to 5 again..5=2 1/2. Then I went to 1/2 until I went to 8. 1/2 to 8 and got 4 total servings of milk

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

4(w+1)=−6 <br><br> w = ?<br> HURRY FAST!

vodomira [7]

Answer:

4w+4=-6

4w=-6-4

4w=-10

4w/4=-10/4

w=-2.5

7 0

3 years ago

Which equation represents the line that passes through (0, 2) and (3, 1)?

Anna11 [10]

<h3>Answer:</h3>

A. y = -1/3x + 2 . . . . . . . . assuming a typo in your problem statement

<h3>Explanation:</h3>

The point (0, 2) is the y-intercept. This tells you the equation will be something of the form ...

... y = mx + 2 . . . . . . matching only answer choices A and C

_____

Knowing this, you can either substitute the values x=3, y=1 into these two equations to see which one works (it is not C), or you can look at the two points and determine the value of the slope.

The slope is ...

... (difference in y)/(difference in x) = (1-2)/(3-0) = -1/3 . . . . . matches choice A

The equation of the line is ...

... y = -1/3x + 2 . . . . . matches answer choice A

6 0

3 years ago