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3 years ago

Pls help me. I'm lost

Mathematics

1 answer:

Ket [755]3 years ago

4 0

Answer:

f(-2) = 13

g(4) = -9

Explanation:

Whenever a question is asking you to find something like, in this example, f(-2) or g(4), you have to substitute whatever number is in the parentheses for every x in the function with that letter.

Let's try to find f(-2). We have to substitute -2 for every x in the function f and simplify:

$f(-2) = -2 (-2)^{3} -3\\f(-2) = -2(-8)-3\\f(-2) = 16 - 3 \\f(-2) = 13$

Therefore, $f(-2) = 13$ .

Next, let's try to find g(4). We have to substitute 4 for every x in the function g and simplify:

$g (4) = -2(4) - 1\\g(4) = -8-1\\g(4) = -9$

Therefore, $g (4) = -9.$

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Write a rule that tell how to use mental math to find the product 30,000 x 50,000

USPshnik [31]

Answer:

1,500,000,000

Step-by-step explanation:

First multipy the first digits, which are the ones that do not contain zero.

then put all of the zeros at the end, so product will be 1,500,000,000 because their are 8 zeros in total

if you check with calculator, you get 1,500,000,000

3 0

3 years ago

Leslie mows lawns to earn money. For each customer, she charges $2.00 for gas and $3.00 per 12 hour of work. Let x represent the

RUDIKE [14]

Answer:

See Explanation

Step-by-step explanation:

Given

$Gas = \$2.00$

$Rate = \$3.00/12hr$

$\begin{array}{ccc}{Row} & {Hours} & {Earnings} & {A} & {2} & { } & {B} & {4} & { } & {C} & {6} &{ } \ \end{array}$ ---- Missing table

Required

Complete the table and plot the graph

First, we determine the equation of the table:

$Gas = \$2.00$

$Rate = \$3.00/12hr$ implies that:

$Rate = \$0.25/hr$

So:

$y = Gas + Rate * x$

$y = 2+ 0.25* x$

$y = 2+ 0.25 x$

To complete the table, we have:

$x = 2$

$y = 2+ 0.25 x = 2+0.25 * 2 = 2.5$

$x = 4$

$y = 2+ 0.25 x = 2+0.25 * 4 = 3$

$x = 6$

$y = 2+ 0.25 x = 2+0.25 * 6 = 3.5$

So, the complete table is:

$\begin{array}{ccc}{Row} & {Hours} & {Earnings} & {A} & {2} & {2.5} & {B} & {4} & {3} & {C} & {6} &{3.5} \ \end{array}$

See attachment for graph

6 0

3 years ago

A glacier moves about 12 inches every 36 hours. About how far does the glacier move in 1 week?

yaroslaw [1]

$\begin{array}{cccccc}12in&-&36h&/:3\\\\4in&-&12h&/\cdot2\\\\8in&-&24h=1day&/\cdot7\\\\42in&-&7day=1week\end{array}\\\\\\\\Answer:42\ inches.$

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3 years ago

Read 2 more answers

Heather is making two different pies if the first pie needs 6.25 cups of flour and the second pie needs 4.5 cups of flour how mu

sp2606 [1]

Answer:

The answer is 9.75

Step-by-step explanation:

6.25

4.50

Equals 9.75

You have to add a 0 after the 5 in 4.5 because the 5 is in the tenths place.

Sorry if it isn’t right, that’s how I was taught.

7 0

3 years ago

Hey some help please and thank.

tatyana61 [14]

Think of how many there are. im not sure if you put these into ratios or not...

like for number 3 think of how many numbers 1-9 are multiples of three

1 2 3 4 5 6 7 8 9

and once you get that number you make it out of 9 because there were 9 numbers

Example

3:9 3/9

for questions one and two its out of 52 and if you don't know how many clubs and hearts are in a deck you can look it up and put it in a ratio with 52

7 0

3 years ago

Pls help me. I'm lost​

Pls help me. I'm lost