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kkurt [141]
3 years ago
11

.If a*b = a - 1, then 7 * 28 =​

Mathematics
1 answer:
Butoxors [25]3 years ago
5 0

Answer:

12

Step-by-step explanation:

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$42 is 35% of what amount of money
sweet [91]

Answer: 14 dollars and 70 cents

Step-by-step explanation:

3 0
3 years ago
Simplify.
Kazeer [188]
(1/2)^2 = 1/4
2-2/3 = 6/3 - 2/3 = 4/3

OK so:
(1/2)^2 - 6(2-2/3) = 1/4 - 6(4/3)
= 1/4 - 8
= 1/4 - 32/4
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3 0
3 years ago
An engineer scale model shows a building that is 3 inches tall. If the scale is 1 inch = 600 feet, how tall is the actual buildi
Sever21 [200]

The actual height of building is 1800 feet.

Step-by-step explanation:

Given,

Height of building in model = 3 inches

Scale used by engineer;

1 inch = 600 feet

Therefore;

Actual height of building = Height in model * Scale used

Actual height of building = 3 * 600

Actual height of building = 1800 feet

The actual height of building is 1800 feet.

8 0
3 years ago
Which of the following points is the solution of the quadratic equation:3x^2-5x-2=0​
Maslowich

Answer:

x1 = 2

x2 = -1/3

Step-by-step explanation:

3x^2-5x-2=0

D=25-4*(-2)*3 = 25 + 24 = 49 --> sqrt 49 = 7

x1 = 5 + 7 / 2*3 =   2

x2 = 5 - 7 / 2*3 =  -1/3

7 0
2 years ago
Rachel drove 756 miles in 12 hours.<br> At the same rate, how many miles would she drive in 8 hours?
kvv77 [185]

Answer:

504 miles

Step-by-step explanation:

you would do 756÷12 which equals 63.... For every hour that you drive its 63 miles. Then you do 63×8 to get 504

4 0
3 years ago
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