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sergiy2304 [10]
3 years ago
10

7 2/15 + 5 2/3 +9 13/15=?? A:20 3/2 B:21 2/3 C:21 10/15 D:22 2/3

Mathematics
2 answers:
Rasek [7]3 years ago
7 0
I got D. 22 2/3
The question goes 7 2/15+5 10/15+9 13/15= 21 25/15 = 22 2/3

nikdorinn [45]3 years ago
6 0
<span>22.6666666667, in other words D. 22 2/3</span>
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What is the slope of a line parallel to the equation 4x - 2y =8
Ksju [112]

4x − 2y = 8, 2y = 4x − 8 and y = 2x − 4. In this form, we can see that the slope of the line is 2 and the y-intercept is −4 (which means the point (0,−4)). The slope of any line that is perpendicular to this one is the negative reciprocal of the slope of this line or −1/2.

8 0
3 years ago
Which matrix represents the system of equations shown below?<br> 4x - 2y = 8<br> 2x-3y = 12
Serjik [45]

Answer:

4x-2y=8

or, 4x = 8+2y

or x = 8+2y/4-----(eq.1)

2x-3y=12-----(eq.2)

Now,

putting value of eq.1 in eq.2, we get

2x-3y=12

or, (8+2y/4)-3y = 12

or, 8-10y/4=12

or, 8-10y=12×4

or,8-10y=48

or,-10y=48-8

or,y=40/-10

or, y = -4

again,

2x-3y=12

or, 2x-3×-4=12

or, 2x+12=12

or, x=0

In 1st option

4x-2y=8

or,4×0-2×-4=8

or,0+8=8

8=8

2x-3y=12

2×0-3×-4=12

0+12=12

12=12

So 1st option is true

3 0
3 years ago
Help with math please! This is table to linear equation (level 3)
kolbaska11 [484]

Answer:

y = -5x-4

Step-by-step explanation:

start with slope-intercept form:

-9-11/1+3 = -20/4 = -5

your slope is -5

next, do point-slope form:

y+9 = -5(x-1)

y+9 = -5x+5

 -9         -9

y = -5x-4

4 0
2 years ago
Use the distributive property to remove the parentheses <br> -5(-4y-w+3)
vampirchik [111]

Answer:

Step-by-step explanation:

Original Equation:

-5(-4y - w + 3)

Multiply -5 by -4y

20y

Multiply -5 by -w

5w

Multiply -5 by 3

-15

Plug these values back into the equation

20y + 5w - 15

Hope this helps :)

6 0
3 years ago
Ben wants to get a 94 in math class. His grade will be the average of two test scores. He scored an 89 on the first test. What g
In-s [12.5K]

Answer:

Ben needs to get a 99% on his second test

Step-by-step explanation:

The average is the sum of both test scores, divided by the total number of test scores (2).

Let x by the grade Ben must receive on his second test.

(89 + x)/2 = 94

Multiply by 2 on both sides

89 + x = 188

Subtract 89 on both sides

x = 99

Check work:

(89 + 99)/2 = 188/2 = 99

8 0
2 years ago
Read 2 more answers
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