Katrina saved $200 to purchase your tablet her father spent ten times as much money to buy his new computer how much did her father's computer cost

Answers

Answer 1

Answer: I believe it would be $2,000. $200 x 10

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Susan sold half of her comic books and then bought 8 more She now has 13. How many did she begin with

Answers

Answer16

Step-by-step explanation:

8*2=16

She began with 10 books
Half of 10 is 5
Then she bought 8
Now she has 13

JI'll lives 3 1/2 miles from school.One morning, her friend was giving her a ride. When they were 2/3 of the way to school, their car broke down & they had to walk the rest of the way.

Answers

Cool story. I think you might be asking how long they had to walk and ride.

3.5*.66 = 2.31 miles drove

3.5*.33 = 1.15 miles walked

B squared minus 7b plus 6

Answers

Answer:

(b-1)(b-6)

Step-by-step explanation:

recheck : -6×-1=6

-6-1= -7

b×b=b²

11. Braydon buys a new CD and pays 8% sales tax. If the sales tax is $1.20, calculatethe price of the CD.

Answers

$\text{Find the price of the CD:}\n\n\text{We know that Brandon pays 8\% in sales tax}\n\n\text{We also know the cost of taxd was \$1.20}\n\n\text{Turn this into an equation, use x to represent price of CD}\n\n1.2=0.08x\n\n\text{Solve for x:}\n\n1.2=0.08x\n\n\text{Divide 1.2 by 0.08}\n\n15=x\n\n\boxed{\text{Price of CD: \$15}}$

The sum of nine times a number and fifteen is less than or equal to the sum of twenty four and ten times the number

Answers

let x be the number, then
9x + 15 < or = 10x + 25
then this inequality can be solved
subtract 9x from both sides of < or =
15 < or = x + 25
subtract 25 from both sides of < or =
-10 < or = x
this can be written as
x > or = -10

The sum of nine times a number and fifteen is less than or equal to the sum of twenty four and ten times the number needs to be put down in an inequality.

$9x+15 \leq 24+10x$

Solve for x.

$-x \leq 9$
$x \geq -9$

0.4x+0.5y=2.51.2x-3.5y=2.5

ELIMINATION BY USING MULTIPLICATION

Answers

$\begin{cases} 0.4x+0.5y=2.5\ \ /*7 \n 1.2x-3.5y=2.5\end{cases} \n \n \begin{cases} 2.8x+3.5y=17.5 \n 1.2x-3.5y=2.5\end{cases}\n +\ \ -------- \n4x=20 \ \ /:4\n \nx=5$

$0.4x+0.5y=2.5\n \n 0.4*5+0.5y=2.5\n \n2+0.5y=2.5\ \ | -2\n \n0.5y=2.5-2\n \n0.5y=0.5 \ \ :/ \ 0.5\n \n y=1 \n \n \begin{cases}\ \x=5 \n y=1 \end{cases}$

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