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sasho [114]
3 years ago
13

Evaluate (ab)^2 for a=4 and b=3. A. 81B. 144C. 24D. 36

Mathematics
1 answer:
worty [1.4K]3 years ago
8 0
Substitute the number for the appropriate variables and solve
(ab)^2
(4×3)^2
(12)^2
12×12
144
Your answer is B.144
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You can do one-half of a job in an hour. Your friend can do one-third of the same job in an hour. How long will it take to do th
Mariana [72]

You do:  1/2  job/hr

Your friend does:  1/3  job/hr

Together:       (1/2 + 1/3)  job / hr

                   = (3/6 + 2/6)  job/hr

                   =    5/6          job/hr .

Since you do  5/6 job/hr, the corresponding
inverse unit rate is 
                                 6/5  hr/job

                              = 1 and 1/5 hr/job

                              =  1.2 hours/job

                              = 1 hour 12 minutes  per job.

5 0
3 years ago
Jan uses 22.5 gallons of water in the shower. This amount is 7.5 gallons less than what she uses when washing her clothes. Write
arsen [322]

22.5 (shower) = X (variable used in place of the amount of water she uses to wash clothes) - 7.5 (the amount she used in the shower is 7.5 gallons less than she uses for washing clothes)

22.5 = X - 7.5 《 This is the equation.

Solve is by adding 7.5 to both sides to cancel out the negative 7.5 and you get (X = 30).

3 0
3 years ago
PLEASE SOMEONE HELP ASAP AND SHOW THE WORK
julsineya [31]
The sum of two sides of a triangle must be greater than the third side
1) 5+9>14
14>14 It is incorrect so you can’t have these lengths

2)7+7>15
14>15 X

3)1+2>4
3>4 X

4)3+6>8
9>8

6+8>3
14>3

8+3>6
11>6

So the fourth choice is correct
8 0
3 years ago
Write 6x² + 11x – 35 = 0, 2x² – 4x – 2 = 0,
earnstyle [38]

Answer:

lol ty

Step-by-step explanation:

4 0
3 years ago
X squared -8x+14=2x-7
Stella [2.4K]

Answer:

x = 3 or x = 7

Step-by-step explanation:

X² - 8x + 14 = 2x - 7

x² - 8x + 14 - 2x + 7 = 0

Now we have a quadratic equation ;

x² - 10x + 21 = 0

-3 and - 7 gives a sum of - 10 and a product of 21

x² - 3x - 7x + 21 = 0

x(x - 3) - 7(x - 3) = 0

(x - 3) = 0 or (x - 7) = 0

x = 3 or x = 7

5 0
2 years ago
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