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4 years ago

Tobin is solving the equation 3(x - 1.25) = 11.25. His work is shown below.

Mathematics

2 answers:

katrin [286]4 years ago

8 0

Answer:

C) Tobin should have divided by 3.

Step-by-step explanation:

viva [34]4 years ago

6 0

Answer:

Instead of dividing by 3, he multiplied by 3

Step-by-step explanation:

3x = 15

Divide both sides by 3

3x/3 = 15/3

x= 5

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Nathan took his car in for service and repair. He had a coupon for 15% off. $261.36 $381.25 $77.52 Which amount is closest to Na

Leona [35]

Answer:

Total amount to be paid = $655

Step-by-step explanation:

Given,

Total price before coupon is = 261.36 +381.25+77.52

= $720.13

Discount = 15%

Amount of discount = 15% of total amount

Amount of discount = $\frac{15}{100} \times 720.13$

= $108.02

Remaining amount = Total amount - discount amount

Remaining amount = $720.13 - $108.02

= $612.11

Sales tax = 6%

Amount of sales tax = 6% of remaining amount

$=\frac{6}{100} \times 612.11\\\\=42.85$

Amount to be paid = Remaining amount + sales tax

= 612.11 + 42.85

= 654.96

Rounding off to nearest whole number;

Total amount to be paid = $655

3 0

3 years ago

last week mrs. kitts sold 6 more than 3 times that the sold this week. she sold over 110 cds over the 2 weeks. which systems of

ladessa [460]

Answer:

The system of equations are:

$y=3x+6\\x+y=110$

CDs sold this week is 26 and that of last week is 84.

Step-by-step explanation:

Let the number of CDs sold this week be $x$ and last week be $y$

Given:

CDs sold last week = 6 more than 3 times she sold this week

∴ $y = 3x+6$ ------------- 1

Also, total number of CDs sold are 110.

∴ $x+y=110$ ------------ 2

Therefore, the above two equations are systems of equations that can be used to find the number of CDs she sold last week and the number of CDs she sold this week.

Now, in order to solve, we plug in the value of $y$ from equation (1) in equation (2). This gives,

$x+(3x+6)=110\\x+3x+6=110\\4x+6=110\\4x=110-6\\4x=104\\x=26$

Now, $y=3x+6=3(26)+6=78+6=84$

Therefore, the number of CDs sold this week is 26 and last week is 84.

3 0

3 years ago

2. Write four thousand twenty four and seventy six thousandths in number inta decimall

nikdorinn [45]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

PLEASE HELP PLEASE HELP PLEASE

WARRIOR [948]

f is given as -3

-3 is greater than -4, so use the second equation 3x-5.

replace x with -3 and calculate:

3(-3) - 5 = -9 - 5 = -14

The answer is -14.

6 0

3 years ago

A = x. b What is b in the terms of a and x

liq [111]

Step-by-step explanation:

i think its

b=x

a

hope it help u...

8 0

3 years ago