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jekas [21]
3 years ago
13

The sum of a certain number and 30 is 255 find the number​

Mathematics
1 answer:
Galina-37 [17]3 years ago
4 0

Answer:

The certain  number is 225

Step-by-step explanation:

Sum of 225 and 30 is 255.

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Step-by-step explanation:

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3 years ago
A car travelling at a constant speed travels 90km in 50 min .How far travelling at the same constant speed will the car travel i
vovikov84 [41]

Answer:

261 km

Step-by-step explanation:

given,s=constant

d1/T1=d2/T2

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6 0
3 years ago
Betty's grade in science class is affected by the number of missing assignments. The table below shows the science grade percent
Angelina_Jolie [31]

Hi!

y=-5x+95

<em>Plug in </em>15 for x

y=-5(15)+95

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y=-75+95

<em>Add </em>-75 <em>and </em>95

y =15

-------------------------------------------------------------------------------------------------------------

Betty's percentage is 15%.

The rate of change is the amount it changes for every missing assignment, therefore it would be -5.

5 0
3 years ago
Question 5
kramer

Answer:

The possible numbers that Kelley might have scored are:

1, 2, 3, 4, 5, 6, 7 and 8

Step-by-step explanation:

Please kindly see the attached file for more explanation

8 0
3 years ago
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