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sergejj [24]
3 years ago
13

BRAINIEST ANSWER

Mathematics
1 answer:
WINSTONCH [101]3 years ago
6 0
Hour of private use: 4 hours
hour for research work: 2 hours
hour for commercial work: 1 hour
hour for test purposes: 1 hour.

A total of 8 hours a day where only 7 hours generate income.

private use: 4 hours * 5 per hour = 20
research work: 2 hours * 15 per hour = 30
commercial work: 1 hour * 40 per hour = 40

20 + 30 + 40 = 90 for 7 hours in one day.

Percentage of commercial work on total receipts for the day.

40 ÷ 90 = 0.4444 x 100% = 44.44%  CHOICE A. 44.50
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Solve the equation 3x + 4 = 5x - 8​
CaHeK987 [17]

Answer:

x = 6

Step-by-step explanation:

3x + 4 = 5x - 8

==> add 8 to both sides

in doing so we get 3x + 4 + 8 = 5x - 8 + 8

the -8 and the +8 cancels out and 4 + 8 = 12

we are left with 3x + 12 = 5x

==> subtract 3x from both sides

in doing so we get 3x - 3x + 12 = 5x - 3x

the 3x and -3x cancel out and 5x - 3x = 2x

we are left with 12 = 2x

==> divide both sides by 2

in doing so we get 12/2 which equals 6 and 2x/2x which leaves us with

6 = x

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2 years ago
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belka [17]

Answer:

b. 10

Step-by-step explanation:

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3 years ago
A rectangle on a coordinate plane has vertices (-1.1), R(6, 1). S(6.-8), and T(-1,-8). What are the dimensions of the
Monica [59]

Answer:

b. the base is 9 and the height is 6

Step-by-step explanation:

6 0
2 years ago
Use induction to prove that 2? ?? for any integer n>0 . Indicate type of induction used.
Hoochie [10]

Answer with explanation:

The given statement is which we have to prove by the principal of Mathematical Induction

    2^{n}>n

1.→For, n=1

L H S =2

R H S=1

2>1

L H S> R H S

So,the Statement is true for , n=1.

2.⇒Let the statement is true for, n=k.

      2^{k}>k

                   ---------------------------------------(1)

3⇒Now, we will prove that the mathematical statement  is true for, n=k+1.

     \rightarrow 2^{k+1}>k+1\\\\L H S=\rightarrow 2^{k+1}=2^{k}\times 2\\\\\text{Using 1}\\\\2^{k}>k\\\\\text{Multiplying both sides by 2}\\\\2^{k+1}>2k\\\\As, 2 k=k+k,\text{Which will be always greater than }k+1.\\\\\rightarrow 2 k>k+1\\\\\rightarrow2^{k+1}>k+1

Hence it is true for, n=k+1.

So,we have proved the statement with the help of mathematical Induction, which is

      2^{k}>k

                 

   

3 0
3 years ago
A box contains orange balls and green balls. The number of green balls is six more than four times the number of orange balls. I
Delvig [45]
This is your answer

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