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2 years ago

Which set of equations has (5.0) as its solution? A and B OC and D OB and D A and D

Mathematics

1 answer:

Elodia [21]2 years ago

3 0

Answer:

I believe A. A and B is the correct answer, Have a nice day

Step-by-step explanation:

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for the school play adult tickets cost 4$ and children tickets cost 2$ natalie is working at the ticket counter and just sold 20

lilavasa [31]

Let us formulate the independent equation that represents the problem. We let x be the cost for adult tickets and y be the cost for children tickets. All of the sales should equal to $20. Since each adult costs $4 and each child costs $2, the equation should be

4x + 2y = 20

There are two unknown but only one independent equation. We cannot solve an exact solution for this. One way to solve this is to state all the possibilities. Let's start by assigning values of x. The least value of x possible is 0. This is when no adults but only children bought the tickets.

When x=0,
4(0) + 2y = 20
y = 10

When x=1,
4(1) + 2y = 20
y = 8

When x=2,
4(2) + 2y = 20
y = 6

When x=3,
4(3) + 2y= 20
y = 4

When x = 4,
4(4) + 2y = 20
y = 2

When x = 5,
4(5) + 2y = 20
y = 0

When x = 6,
4(6) + 2y = 20
y = -2

A negative value for y is impossible. Therefore, the list of possible combination ends at x =5. To summarize, the combinations of adults and children tickets sold is tabulated below:

Number of adult tickets Number of children tickets
0 10
1 8
2 6
3 4
4 2
5 0

6 0

3 years ago

The volume of a rectangular box is 330 cubic inches. The length on one side of the top is 11 inches, and the height of the box i

Kipish [7]

Answer:

width = 10 inches

Step-by-step explanation:

V = lwh

w = $\frac{V}{lh}$ = $\frac{330in^{3} }{11in(3in)}$ = $\frac{330}{33}$ = 10 inches

7 0

2 years ago

Which one is it A. B. C. or D.

nadya68 [22]

7x + 2y = 2
2x - y = 10

2y = - 7x + 2
- y = - 2x + 10

2y = -7x + 2
y = 2x - 10

$y=\frac{-7x+2}{2}$
y= 2x - 10

y = -3.5x + 1
y = 2x - 10

Now, let's find "x" first by doing a substituion !

2x - 10 = - 3.5x + 1
y = 2x - 10

2x + 3.5x = 1 + 10
y = 2x - 10

5.5x = 11
y= 2x - 10

$x = \frac{11}{5.5}=2$
y= 2*2 - 10 = 4 - 10 = -6

In short, the answer would be : y = -6 (Option B).

Hope this helps !

Photon

8 0

2 years ago

Which expression represents the volume of the pyramid? One-fourths2h units3 One-thirds2h units3 s2h units3 3s2h units3

seraphim [82]

Answer:

$V=\dfrac{1}{3}s^2h$

Step-by-step explanation:

The question should be :

A solid right pyramid has a square base with an edge length of s units and a height of h units.

The formula for the volume of the pyramid is given by :

$V=\dfrac{1}{3}\times A\times h$

A is area of base and h is height.

As edge length is s units.

A = (s)²

So,

$V=\dfrac{1}{3}\times s^2\times h\\\\=\dfrac{1}{3}s^2h$

So, the required volume is one-thirds s²h unit³.

5 0

2 years ago

Read 2 more answers

If you were to roll a six sided die, 6 TIMES. How many times would you predict that it would land on a number GREATER than 4?

Natali [406]

Answer:

2/6 times

Step-by-step explanation:

only side 5 and 6 are greater than four and with fair rolls you would expect the die to land on each side once. So 2/6 times you would expect a roll greater than 4.

6 0

2 years ago