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3 years ago

Please help me answer this !

Mathematics

1 answer:

Elenna [48]3 years ago

6 0

Answer: The first answer should be correct.

Step-by-step explanation: It is asking to find the number of equal-sized parts. Equal-sized means the number has to be split. I hope this clears up your problem! :P

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2. Evaluate f(3) for f(x) = 2x - 9

dedylja [7]

Answer:

-3

Step-by-step explanation:

$f(x) = 2x - 9$

$f(3) = 2(3) - 9\\f(3) = 6 - 9\\f(3) = -3$

4 0

3 years ago

Someone please help me?

kirza4 [7]

Answer:

jus press alt f4 and a overlay will open up with all the answers

Step-by-step explanation:

7 0

3 years ago

I forgot how to multiply by division and multiplication. It’s been such a long time since I’ve done it i’ve practically forgot h

levacccp [35]

Answer:

First, multiplication:

Multiplication is repeated addition, there's really no way to put it simpler. For example:

4 × 6 = 24 because 4 + 4 + 4 + 4 + 4 + 4 = 24

3 × 3 = 9 because 3 + 3 + 3 = 9

9 × 2 = 18 because 9 + 9 = 18

Multiplication, like addition, can also work backwards, so 6 × 4 is also 24, 2 × 9 is 18, and so on.

I recommend practicing your times tables up to 12 if your remembrance has gotten really bad.

Now division:

Division has the same properties as multiplication, except with subtraction. The difference, however, is that division does not work backwards. It's the same as subtraction.

Here are some examples for division:

6 ÷ 3 = 2 because 6 - 3 - 3 = 0 (3 can be subtracted twice, so the answer is 2)

12 ÷ 4 = 3 because 12 - 4 - 4 - 4 = 0

20 ÷ 2 = 10 because 20 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 = 0

I'd recommend practicing your long division if you are struggling.

Hope this helped you! If you have any more questions, send me a friend request and I'll check for more questions every so often. :)

5 0

3 years ago

here is the graph of a function showing the amount of money remaining on a subway fare card as a function of the number of rides

forsale [732]

Answer:

Step-by-step explanation:

This is a linear graph,

Let find the equation of the line

Equation of a line can be determine using

y = mx + c

Where m Is the slope of the graph and c is the intercept on y axis when x = 0

So,

Slope m can be calculated using

Let chose the two point on the x and y axis

P1 = (0,45) and , P2 = (18,0)

m = ∆y / ∆x = y2 - y1 / x2 - x1

m = 0 - 45 / 18 - 0

m = -45 / 18

m = -2.5

So, the intercept on the y axis when x = 0 is 45. Then, c = 45

So, the equation of the line becomes

y = -2.5x + 45

Multiply through by 2

2y = -5x + 90

Where

y is dollars on card, = output

x is the number of rides = input

A. So, we want to find the output when the input is 10, I.e when x = 10

Then,

y = -2.5x + 45

x = 10

y = -2.5 × 10 + 45

y = -25 + 45

y = 20

Then, the output is 20 dollars on card.

B. When the output is 5

I.e y = 5

Then,

y = -2.5x + 45

5 = -2.5x + 45

5-45 = -2.5x

-40 = -2.5x

x = -40 / -2.5

x = 16 rides

The input is 16 number of rides

C. Point P is (7,27.5)

This tells us that when the input is 7, I.e the number of rides is 7, then, the output is 27.5 I.e their are $27.5 dollars on card.

4 0

3 years ago

The gas in Dads car holds 12 gallons. Athe gas tank in Moms truck holds 50% more than that. How much gas does the truck's tank h

allochka39001 [22]

Answer:

18 gallons

Step-by-step explanation:

Step one:

given data

The gas in Dad's car holds 12 gallons

the gas tank in Moms truck holds 50% more than that in Dad's car

Hence 50% of 12 is

=50/100*12

=0.5*12

= 6 gallons

We are told that the gas tank in Moms truck holds 50% more than that in Dad's car

Therefore Mum's car will hold

=12+6

=18 gallons

5 0

3 years ago