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andrezito [222]
3 years ago
9

Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Daniel now

Mathematics
1 answer:
matrenka [14]3 years ago
7 0
<span>K = 3D. K - 4 = 5(D - 4). K - 4 = 5D - 20. K = 5D - 16. 3D = 5D - 16. 16 = 2D. D = 8. K = 3 x 8. K = 24.</span>
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Mai bought some party supplies from an online store. For shipping, the shop charges a flat fee of $7.95 or 6.25% of the total pu
alisha [4.7K]

Answer:

8

Step-by-step explanation:

if we do 128+7.95 we get 135.95. but when we do 128+8(wich is 6.25% of 128) we get 136. so she will pay 8 dollars in shipping

Hope this helps.

3 0
2 years ago
Consider the function graphed below.
aivan3 [116]

Answer:

B. (see attached)

Step-by-step explanation:

All the answers agree that the function is x² for x < 1. Where they disagree is in the slope and y-intercept of the linear portion for x > 1.

The line has a slope that is less than 1 unit of rise for 1 unit of run, so will not be selections A or C, which have slopes of 3.

The y-intercept is clearly positive if we extend the line to the left until it reaches the y-axis. This eliminates selection D from consideration, leaving only selection B.

8 0
3 years ago
Which expression is equivalent to 3(m − 3) + 4?<br><br> 3m + 1<br> 3m − 5<br> 3m + 13<br> 3m − 3
Volgvan

Answer:

3m - 5

Step-by-step explanation:

3(m - 3) + 4           Distribute the 3

3m - 9 + 4             Simplify

3m - 5

6 0
2 years ago
Read 2 more answers
Is 7 asolution for the equation 2x + 12=3x +(-2x + 5)
olchik [2.2K]

Answer:

No

Step-by-step explanation:

2X + 12=13x - 2x + 5

2X + 12= 11x+5

2x-11x = 5-12

-9x = -7

X = 7/9

so the answer is NO

4 0
2 years ago
Solve each inequlity 5- 2( 3x-4) -2x &lt; -6x + 4
almond37 [142]

Answer:

x > 9/2

Step-by-step explanation:

don't get scared :) we can isolate the variable easily!

distribute

5 -2( 3x-4) -2x < -6x + 4

5 -6x + 8 - 2x < -6x + 4

-8x + 13 < -6x + 4

+6x   -13   +6x   -13

-2x < -9

x > 9/2

change the direction of the sign because we divided by a negative

There you go!

I hope this helps (:  

8 0
3 years ago
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