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schepotkina [342]
3 years ago
14

Which expression has the same sum as the one below?

Mathematics
2 answers:
BartSMP [9]3 years ago
7 0

Answer:

6+(-15)

Step-by-step explanation:

  1. + multiplied by minus is minus so that is 6-15
docker41 [41]3 years ago
6 0

Step-by-step explanation:

The First one and the last one

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Round each number to the nearest ten. What is the best estimate for the answer to 343.42 – 39.87?
Nikolay [14]
So I would round it to 340 and 40 because if the number is lower than 5 than take it DOWN to the nearest ten if it's five or above take UP to the nearest ten

Hope it helped you
7 0
3 years ago
Which pair of lines is parallel? A. y=4x+1 and y+4=5 B. y=-2+x and 2y-2x=-2 C. y=1/4x + 2 and y-2=1/2x D. y=1/5x+1 and 5y+x= 10
sdas [7]

Answer:

B. y=-2+x and 2y-2x=-2

Step-by-step explanation:

Two lines are parallel if they have the same slope.

The equation 0of a line is tipically written as y=mx + b, where 'm' represents the slope and 'b' the y-intercept.

Let's evaluate each of the options:

A. y=4x+1 and y+4x=5

Writing the equations in the slope-intercept form, we get:

y=4x+1 → m=4

y=5-4x → m=-4

Given that they have different slopes, they are not parallel.

B. y=-2+x and 2y-2x=-2

Writing the equations in the slope-intercept form, we get:

y=-2+x → m=1

y=-1 + x → m=1

Given that the equations have the same slope, they are parallel.

C. y=1/4x + 2 and y-2=1/2x

Writing the equations in the slope-intercept form, we get:

y=1/4x + 2  → m=1/4

y=1/2x+2 → m=1/2

Given that they have different slopes, they are not parallel.

D. y=1/5x+1 and 5y+x= 10

Writing the equations in the slope-intercept form, we get:

y=1/5x+1 → m=1/5

5y+x= 10 → y=2 - 1/5x → m=-1/5

Given that they have different slopes, they are not parallel.

4 0
3 years ago
Jessica wants to calculate her grade in her accounting class.she has four test grades (82, 65, 71, and 77) and a homework grade
Aleks04 [339]

To solve the problem, get the percentage of each test by multiplying the score and the percentage then add it all up:


82 * .25 (highest test grade) + 65* .15 (lowest test grade) + 71*.20 (each test remaining) + 77*.20 (each test remaining) + 92*.20 (homework grade)


= 20.5 + 9.75 + 14.2 + 15.4 + 18.4 = 78.25 or 78% in whole number

3 0
3 years ago
-5(4b+ 7) = distributive property
vova2212 [387]

Answer:

-20b-35

Step-by-step explanation:

8 0
2 years ago
Can someone please help me extra points
Maslowich

Answer:

4) m: 1.25   b: 6         Equation: y= 1.25x + 6

5) m: 20      b: 10     Equation: y= 40x + 10

6) m: -2       b: 0       Equation: y= -2x + 0

7) m: 1/5      b: 1       Equation: y= 1/5x + 1

8) -8.7 = 1.3x + 0

I really hope this helps!

3 0
3 years ago
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