solve this equation, and show work. worth 40 points

Answer:

The sweater will cost $12

Step-by-step explanation:

15 x 20% = 3 15 -3 = 12

Answer:

your age is 10 and your brothers age is 2 the equation is

Step-by-step explanation:

a=5b=b+9

the first part is how old you are the second is how old your brother is and the third is how old your sister

Common difference = Second term - first term

Common difference = 1 - 10

Common difference = - 9

-2/3(12c - 9) + 14c

=-8c + 6 + 14c

=6c + 6

=6(c + 1)

Answer:

1 x 11

10 + 1

Step-by-step explanation:

Answer:

This is an exponent problem. 3 to the power of 4 or maybe 5

Step-by-step explanation:

Each number in this pattern is multiplied by 3

Answer:

a. 160-24=g

b. 160-24=g

   -24

   136=g

c. 136

Answer:

I believe that the answer is 3.33

Answer:Its 1/6

Step-by-step explanation:

49×38= 4 × 39 × 8= 12/72= 12 ÷ 12/72 ÷ 12= 16

Answer: it’s 66 I got it right

Step-by-step explanation:

Answer:

The answer will be 66 !!

Step-by-step explanation:

The answer will be 66 because if you look at the chart you can see how much money is cost to rent a bike for each hour. So for Ari, as he rented a bike it costs 9 dollars per hour. So Ari rented the bike for 4 hours, so multiply 4x9=36. Now for Meg, she rented a scooter for 3 hours, each hour means 10$. Now 3x10=30, Then just add 36+30 you get 66!

Answer:

[tex]\overrightarrow{AB}+\overrightarrow{CD}=(-3,-7)[/tex]

Step-by-step explanation:

Vector Addition

We are given the points A=(1,3), B=(-4,5), C=(-2,10), D=(0,1). Find:

[tex]\overrightarrow{AB}+\overrightarrow{CD}[/tex]

First, find both vectors from the initial and final points:

[tex]\overrightarrow{AB}=(-4-1,5-3)=(-5,2)[/tex]

[tex]\overrightarrow{CD}=(0-(-2),1-10)=(2,-9)[/tex]

Now find the sum of both vector by adding the components separately:

[tex]\overrightarrow{AB}+\overrightarrow{CD}=(-5,2)+(2,-9)=(-3,-7)[/tex]

[tex]\boxed{\overrightarrow{AB}+\overrightarrow{CD}=(-3,-7)}[/tex]

Answer:

there are 84 seats in the  second to the last row

Step-by-step explanation:

Given that

each row has two fewer seats than the row behind it

It means that

if first row has x seats then

no of seat in second row has (x-2) seats.

and similarly

no of seat in third  row =no of seat in second row - 2seats.

no of seat in third  row = (x-2) seat - 2 seats = x - 4 seats

_____________________________________________

Given that

last row has 80 seats

let the number of seat in first to the last row be x

then number of seat in last row = x-2

we know number of seat in last row = 80

thus

x - 2 = 80

x = 82

Thus,

the number of seat in first to the last row is 82

Similarly let the number of seat in second to the last row be y

then number of seat in first to the  last row = y-2

since number of seat in first to the last row is 82

thus

y-2 = 82

y = 82 + 2 = 84

Thus, there are 84 seats in the  second to the last row.

_________________________________________________

Answer:

okay well the total distance is 3 and 1/3 km  and the speed that it was for him to go downstream was 2/3 km per hour

Answer:

Step-by-step explanation:

Solving in steps:

Answer: 8

Step-by-step explanation: if you count the angels and the sides then you'll get the answer 8..

she exercised 45 minutes on friday.

she exercised 30 minutes on thursday

she exercised 5 days that week

Answer:

The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, and 48

so the 3rd option is correct

Answer:

1, 2, 3, 4, 6, 8, 12, 16, 24, 48

C

Step-by-step explanation:

got it right on test

Answer:

it is point B

Step-by-step explanation:

because im smart

Answer:

Point B

Step-by-step explanation:

√11 is 3.3

And A is about 2. Something and inbetween D and E is 4 which means C will be 3.5

So it leaves it at B

Answer:

75$

Step-by-step explanation:

because 25+50=75

Answer:

The graph starts at $75 since the price for call is $50 and 1 hour of work costs $25.

Direct variation is only noticeable at the beginning of the graph after that the function is linear.

Step-by-step explanation:

Answer:

15:2 or 15 to 2

Step-by-step explanation:

They are asking for a ratio based on how many chaperones per student (in this case 15 students) In other words 15 students for every 2 chaperones.

Answer:

x + y - 10 = 0

Step-by-step explanation:

x + y - 10 = 10 -10

Move the constant to the left by adding its opposite to both sides

x + y - 10 = 0

The sum of two opposites equals 0

x + y - 10 = 0

^

^

Solution

An exponential function gives a variable raised to the power of x, where the variable is a positive real number

Yes, [tex]\underline{f(x) = 3 ^{(2 \cdot x - 3)}}[/tex] is an exponential function

Reason:

An exponential function is a function that can be written in the form;

f(x) = eˣ

Where;

e = Euler's number, which is the number approximately 2.71828

In the general form, an exponential number is a number given in the form;

f(x) = a·bˣ

Where;

b = A positive real number

The given function; [tex]f(x) = 3 ^{(2 \cdot x - 3)} = \dfrac{3^{2\cdot x}}{3^3} = \dfrac{1}{27} \times 9^x[/tex] is an exponential function

Where;

Therefore, the correct response is; Yes, [tex]f(x) = 3 ^{(2 \cdot x - 3)}[/tex] is an exponential function

Learn more here:

https://brainly.com/question/17153778

Answer:

x=48

Step-by-step explanation:

Since these angles are supplementary, they add up to 180. so, you can set the equation x+23+x+61=81. Simplify the equation and solve for x

Answer:

#1 is x+23°=23

#2 is x+61°=61

Step-by-step explanation:

Because when you are adding it will always be a positive number

But when you are subtracting it will always be a negative number

Answer: 14/8 or 1 and 3/4 of a gallon

Step-by-step explanation: Since its leaking 7/8 every half hour, you would multiple 7/8 by two

Answer:

You move the 0 to the right

Step-by-step explanation: