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4 years ago

Solve 235 + 123 on a number line

1 answer:

7 0

This is easy so you first get your number line and you put 235 on top of the number line and on the botton you put 123 them your make a seperate equestion and add 235 + 123 = 358 and add the nuber 358 in the middle and put right next to 358 final answer

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Describe the graph of the function. y = (x+21

Veseljchak [2.6K]

It’s a straight line increasing
Does that answer your question?

4 0

3 years ago

Can someone help me with this problem please?

Tom [10]

Answer:

senior tickets sold: 12

child tickets sold:8

Step-by-step explanation:

Let

x= amount of senior tickets sold

y= amount of child tickets sold

For the first equation, it should look like:

200=14x+4y

For the second equation, it should look like:

92=7x+y

So this is a systems of equations problem. So I will use substitution as it is easier:

1.) Take one of the equations (in this case ill take 92=7x+y) and make one variable have a value, in this case ill isolate the y.

$(-7x)92=7x+y(-7x)$

$y=92-7x$

2.) Take the value of y and plug it into "y" into the other equation to solve "x"

$200= 14x + 4(92-7x)\\200=14x+368-28x\\(-368)200=-14x+368(-368)\\(-\frac{1}{14})* -168=-14x*(-\frac{1}{14} )\\\\x=12$

(editor's note:instead of dividing it by 14, I multiply by 1/14 as it would look complicated in the equation solving steps)

3.) Then plug the value of "x" to one of the equations to solve for "y" (which I'll use the 92=7x+y)

$92=7(12)+y\\(-84)92=84+y(-84)\\y=8$

7 0

3 years ago

Read 2 more answers

PLEASE HELP FAST! MULTIPLE CHOICE! I HAVE 3 MINUTES! PLEASE SHOW A LITTLE WORK I DONT NEED MUCH!

Ksivusya [100]

Answer:

Step-by-step explanation:

just multiply 8.50 times 4 and all the numbers in the problem

4 0

3 years ago

Find the slope of the line that is perpendicular to the line that passes through the points (5,2) and (8,1)

Naya [18.7K]

Answer:

Step-by-step explanation:

The slope of the line passing through the points is

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

= ( 1-2)/(8-5)

= -1/3

The slope that is perpendicular is the negative reciprocal which is

- ( 1/(-1/3)

+ 3/1

The perpendicular slope is 3

3 0

3 years ago

Evaluate using the finite geometric sum formula

Sever21 [200]

Answer:

$S_9=-18.703$ .

Step-by-step explanation:

The given series is,

$\sum_{i=1}^9(-\frac{1}{2})^{i-1}$

When we substitute $i=1$ , we get the first term, which is $a_1=-28(-\frac{1}{2})^{1-1}$

This implies that,

$a_1=-28(-\frac{1}{2})^{0}$

$a_1=-28(1)=-28$ .

The common ratio is

$r=-\frac{1}{2}$

The finite geometric sum is given by the formula,

$S_n=\frac{a_1(r^n-1)}{r-1} , -1\:$ .

Since there are 9 terms, we find the sum of the first nine terms by putting $n=9$ in to the formula to get,

$S_9=\frac{-28((-\frac{1}{2})^9-1)}{-\frac{1}{2}-1}$ .

$S_9=\frac{-28((-\frac{1}{512})-1)}{-\frac{3}{2}}$ .

$S_9=\frac{-28(-\frac{513}{512})}{-\frac{3}{2}}$ .

$S_9=-28(\frac{171}{256})$ .

$S_9=-\frac{1197}{64}$ .

$S_9=-18.703$ .

The correct answer is B

4 0

3 years ago

Read 2 more answers