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Slav-nsk [51]
3 years ago
10

-a/2=10 what is the value of a

Mathematics
1 answer:
Naddik [55]3 years ago
5 0

Answer:

-20

Step-by-step explanation:

(-a/2=10)/-1

=a/2=-10

a=-10*2

a=-20

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What is the next number in the sequence?<br> 1, 4, 13, 40, 121,...
Nataliya [291]
The pattern here is the number times 3 then plus 1

We can check this by plugging it in.

1×3=3
3+1=4
4 is the next number in our sequence so the pattern works.

We can continue to check this with the rest of our sequence.

4×3=12
12+1=13
13 is the next number in our sequence so the pattern works.

13×3=39
39+1=40
40 is the next number in our sequence so the pattern works.

40×3=120
120+1=121
121 is the next number in our sequence so the pattern works.


We can find the next numbed in the sequence by continuing the patter
121×3=363
363+1=364

So the next number in the sequence is 364
8 0
3 years ago
How do u write 2/400=2/400÷4/4=0.5/100= as a percent
Vlad1618 [11]

Answer:

0.5%.

Step-by-step explanation:

The definition of percent is  'parts per 100'.

0.5 / 100 = 0.5 percent.

7 0
3 years ago
A sample of students is taken from the school’s A honor roll. The school estimates that there are actually 360 students on the A
zlopas [31]

Answer:

Number of 8th Graders = 360 - X  

As you can see this question is not complete and lacks the essential data. But we will try to create a mathematical expression to calculate the number of students on the A honor roll which are from 8th grade.

As we know:

Total number of students on the A honor roll = 360

We are asked to calculate, number of students from 8th grade on the A honor  roll.

So, let's assume that "X" represents all the students who are on the A honor roll except 8th grade.

Mathematical Expression:

Number of 8th Graders = Total number of students on the A honor roll - X

Number of 8th Graders = 360 - X

So, if you know the value of X, you can easily calculate the number of students which are from 8th grade on the A honor roll.

I am not sure if it is wrong I am sorrry.

6 0
3 years ago
Two trains going in opposite directions leave at the same time. Train B travels 30 mph faster than train A. In 5 hours the train
Angelina_Jolie [31]

Answer:

a

Step-by-step explanation:because

3 0
3 years ago
HELPPPPPPP ASAPPPPP PLEASEEE
Kobotan [32]
<h3>Answer: </h3><h3>See the attached image below for the table</h3>

In column 1 we have the x values 0, 4, 8, 12

In column 2, we have the y values 1, 2, 3, 4

==================================================

Explanation:

We can start with any x value we want. I find that 0 is easiest to work with, so why not start at x = 0. For the sake of not repeating, I'll use y = 1 as the start value for y.

The first row of the table is x = 0 and y = 1.

A slope of 1/4 means rise/run = 1/4. So rise = 1 and run = 4.

A rise of 1 indicates y goes up by 1. A run of 4 means x increases by 4.

So put together, slope = 1/4 means each time x goes up by 4, y goes up by 1.

-----------

If we started at x = 0, then going up by 4 leads to x = 4. If y starts at y = 1, then going up by 1 leads to y = 2.

The second row of the table is x = 4 and y = 2

We'll repeat the pattern of "add 4 to x, add 1 to y" getting the third row having x = 8 and y = 3

We can repeat as many times as we want. Doing another "up 1, over to the right 4" movement lands us on (x,y) = (12, 4)

The completed table is shown below in the attached image.

-----------

If you were to use the slope formula with any two rows of the table, then you should get m = 1/4

Let's do the first two rows

m = (y2-y1)/(x2-x1)

m = (2-1)/(4-0)

m = 1/4

I'll let you check the other pairs of rows.

3 0
3 years ago
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