Ask question

Ask question

All categories

3 years ago

13

A television and DVD player cost a total of $1257 the cost of the television is two times the cost of the DVD player find the co

st of each of item

1 answer:

Debora [2.8K]3 years ago

5 0

Tv=t
dvd=d

t+d=1257

t=2d
d=d

2d+d=1257

3d=1257

divide 3 from each side

d=419

t= 2 (419)
t=838

You might be interested in

A store sells flower arrangements at a cost of $28 each. Which statements are true regarding the price of the arrangements? Chec

Maru [420]

Let's check each case to determine the solution to the problem.

we know that

The cost of each flower arrangements is $\$28$

Statements

<u>case A)</u> If the price is marked down by $10$ percent, the new price will be $\$25.20$

we know that

If the price is marked down by $10$ percent

then

the new price will be

$10\%= \frac{10}{100} =0.10$

$(1-0.10)*\$28=0.90*\$28 \\= \$25.20$

$\$25.20=\$25.20$

therefore

The statement case A) is True

<u>case B)</u> If the price is marked down by $25$ percent, the new price will be $\$21$

we know that

If the price is marked down by $25$ percent

then

the new price will be

$25\%= \frac{25}{100} =0.25$

$(1-0.25)*\$28=0.75*\$28 \\= \$21$

$\$21=\$21$

therefore

The statement case B) is True

<u>case C)</u> If the price is marked down by $50$ percent, the new price will be $\$19$

we know that

If the price is marked down by $50$ percent

then

the new price will be

$50\%= \frac{50}{100} =0.50$

$(1-0.50)*\$28=0.50*\$28 \\= \$14$

$\$14 \neq \$19$

therefore

The statement case C) is False

<u>case D)</u> If the price is marked down by $35$ percent, the new price will be $\$18.20$

we know that

If the price is marked down by $35$ percent

then

the new price will be

$35\%= \frac{35}{100} =0.35$

$(1-0.35)*\$28=0.65*\$28 \\= \$18.20$

$\$18.20=\$18.20$

therefore

The statement case D) is True

<u>case E)</u> If the price is marked down by $40$ percent, the new price will be $\$29.80$

we know that

If the price is marked down by $40$ percent

then

the new price will be

$40\%= \frac{40}{100} =0.40$

$(1-0.40)*\$28=0.60*\$28 \\= \$16.80$

$\$16.80 \neq \$29.80$

therefore

The statement case E) is False

7 0

2 years ago

Read 2 more answers

Inductive reasoning or deductive reasoning:

Nat2105 [25]

Answer:

no

Step-by-step explanation:

Example:

9 is an odd number, but 9 can be divided by 3, so 9 is not a prime number.

49 is an odd number, but 49 can be divided by 7, so 49 is not a prime number.

5 0

2 years ago

I don’t know what I’m doing wrong. I need help understanding this problem please...

denpristay [2]

Answer:

Step-by-step explanation:

Cost (C) depends on the number of miles traveled (x).

So C is the dependent variable.

Or C(x) if they want you to be more specific.

x is your independent variable.

Miles driven do not depend on anything.

5 0

3 years ago

6. Meg measured the length of some pieces

alexandr1967 [171]

Answer:

longest length minus the shortest

Step-by-step explanation:

8 0

3 years ago

Select the shapes that are similar to shape A

vekshin1

Answer:

Orange and pink, I'm not too sure

4 0

2 years ago

Read 2 more answers