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3 years ago

What is the value of x? In a equation

Mathematics

2 answers:

ivann1987 [24]3 years ago

5 0

It's determined by the information given to you in a equation.

kvasek [131]3 years ago

4 0

It could be any number

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jim ordered a sports drink and three slices of pizza for $8.50. His friend ordered two sports drink and two slices of pizza for

inna [77]

Answer:

drink cost: $1.75
slice of pizza cost: $2.25

Step-by-step explanation:

Let d and p represent the costs of a drink and a pizza slice, respectively. The two orders have a value ...

d + 3p = 8.50

2d + 2p = 8.00

Subtracting the second equation from twice the first gives ...

2(d +3p) -(2d +2p) = 2(8.50) -(8.00)

4p = 9.00 . . . . . simplify

p = 2.25 . . . . . . divide by 4

Solving the first equation for d and putting in the value, we have

d = 8.50 -3p = 8.50 -3·2.25 = 8.50 -6.75

d = 1.75

The cost of a drink is $1.75; the cost of a pizza slice is $2.25.

4 0

3 years ago

Lashonda purchased a prepaid phone card for $20. Long distance calls cost 8 cents a minute using this card. Lashonda used her ca

Gre4nikov [31]

We know that

• Lashonda purchased a prepaid phone card for $20.

• Long-distance calls cost 8 cents a minute.

• The remaining credit on her card is $17.12.

This problem can be expressed as

$20-0.08x=17.12$

Where <em>x</em> is the number of minutes.

We solve the equation for <em>x</em>

$\begin{gathered} -0.08x=17.12-20 \\ -0.08x=-2.88 \end{gathered}$

Then, we divide by -0.08 the equation

$\begin{gathered} \frac{-0.08x}{-0.08}=\frac{-2.88}{-0.08} \\ x=36 \end{gathered}$ <h2>Therefore, Lashonda's call last 36 minutes.</h2>

8 0

1 year ago

A fair charges an admission fee of 2 dollars for each person. Let a be the cost of admission (in dollars) for P people. Write an

Tomtit [17]

Answer:

$a = 2p$

Step-by-step explanation:

Given

$Admission\ Fee = \$2$ per person

Required

Represent as an equation

For 1 person, the admission fee is 2

For p people, the admission fee will be 2p.

Hence:

$a = 2p$

5 0

3 years ago

A multiple choice test consists of eight questions, each of which has five choices. Each question has exactly one correct answer

Nesterboy [21]

I dont under standyou

7 0

3 years ago

Read 2 more answers

Question 6 (1 point)

charle [14.2K]

well, the table has 5 points in it, let's pick any two hmmm say let's use hmmm (2 , 7) and (6 , 17)

$(\stackrel{x_1}{2}~,~\stackrel{y_1}{7})\qquad (\stackrel{x_2}{6}~,~\stackrel{y_2}{17}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{17}-\stackrel{y1}{7}}}{\underset{run} {\underset{x_2}{6}-\underset{x_1}{2}}}\implies \cfrac{10}{4}\implies \cfrac{5}{2}$

when x = 0, from the table, y = 2, so there's the y-intercept.

7 0

2 years ago