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2 years ago

Please I need some help on this

Mathematics

2 answers:

Svetach [21]2 years ago

6 0

the answer is D: Solve, because you would subtract 12 from 4 and then get you answer.

ivann1987 [24]2 years ago

3 0

It wouldbe D.) because you would do

12-4=x

x would be the number of adults

you would solve for x and get 8 so you would have to solve so it would be D.)

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Tickets to a school play cost $2 if bought in advance and $3 at the door. By selling all 400 tickets, $1030 was collected. First

Marrrta [24]

Answer:

170 tickets.

Step-by-step explanation:

Write formulas for the question.

$N_2+N_3=400$

$2N_2+3N_3=1030$

Then use substitution.

$N_2=-N_3+400$

$2(-N_3+400)+3N_3=1030$

$-2N_3+800+3N_3=1030$

$N_3=230$

So number of $3 tickets sold is 230. But they ask for the tickets bought in advance (i.e. the tickets sold for $2). Use substitution again.

$N_2+230=400\\N_2=400-230\\N_2=170$

6 0

2 years ago

Which equation could be solved using the graph above?

nevsk [136]

Answer:

Option 3

Step-by-step explanation:

we are given the graph of a parabola

with vertex at (0,-1) and symmetrical about y axis and also open up.

Hence the equation of the graph would be transformation of $y=x^2$

by a vertical shift of 1 unit down.

So new equation after transformation would be

$y+1=x^2$

Or $y=x^2-1$

Hence option 3 is right choice.

Verify:

Put Solving the equation we get

$x^2=1$

$x=±1$

In the graph x intercepts are the same as -1 and 1

Hence our answer is right.

8 0

2 years ago

Read 2 more answers

What’s the answer I really need help????

Brums [2.3K]

You should use the calculator and just plug in those numbers

5 0

2 years ago

Read 2 more answers

What is the equation in point-slope form of a line perpendicular to y= ⅕ x+8, through the point (-2, 3) *

ivolga24 [154]

Answer:

it was right but ok

Step-by-step explanation:

First find the total number

6+4+5+3 = 18

6th graders : total

4 : 18

Divide each side by 2

4/2: 18/2

2 : 9

4 0

3 years ago

Explain how to write the equations of vertical lines, and why they are written this way

Rom4ik [11]

1. Recall the vertical line equation.

2. Plug in the x that we know.

3. Write down the final equation

Pls mark me brainiest :)

3 0

3 years ago