MATHEMATICS HIGH SCHOOL

Two equations are given below:a − 3b = 4
a = b − 2

What is the solution to the set of equations in the form (a, b)?

(−2, −2)
(−3, −1)
(−9, −7)
(−5, −3)

Answers

Answer 1
Answer: If you would like to know what is the solution to the set of equations in the form (a, b), you can calculate this using the following steps:

a − 3b = 4
a = b − 2
_______________
a − 3b = 4
b - 2 - 3b = 4
- 2b = 6
b = - 3

a = b − 2 = - 3 - 2 = - 5

(a, b) = (-5, -3)

The correct result would be (-5, -3).

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Every week, Hector works 20 hours and earns $210.00. He earns a constant amount of money per hour.Part A
Write an equation that can be used to determine the number of hours, h, Hector works given the number of weeks, W.
Enter your equation in the space provided

Part B
Write an equation that can be used to determine Hector's earnings, in dollars, m, for h hours of work.
Enter your equation in the space provided.

Answers

Answer:

A). h = 20 w

B). m = 10.5h

Step-by-step explanation:

Part (A).

Let the total number of hours Hector worked = h

And total number of weeks worked by Hector = w

Therefore, number of hours Hector worked in a week = (h)/(w)

Since, total number of hours worked in a week = 20

Equation will be,

20 = (h)/(w)

h = 20w

Part (B).

Per hour earning of Hector = \frac{\text{Total earning}}{\text{Number of hours worked}}=(210)/(20)

(m)/(h)=10.5

m = 10.5h

Please show all work.

Answers

Answer:

wait where is the photo?

Step-by-step explanation:

What is pie time 4 times 10

Answers

the answer is 125.6

pi (3.14) x 4 = 12.56 

12.56 x 10 = 125.6
Not to be rude, I just have issues with improper English, but: correction: Pi.
Pi is 3.14, so multiplying it by 4 would be 12.56. Proceeding to multiply it by 10 would give you 125.6. : ) 

If 4x+3=9x-4 then x =

Answers

4x+3=9x-4
-4x    -4x
3=5x-4
+4    +4
5x=7 
x= 7/5

How do You find 20% of 40

Answers

Divide by 100% will cancel out the percent, then, multiply the value like so
(20)/(100) * 40=8

The probability for success of an event is P(A), and the probability of success of a second event is P(B). What is the probability of both events occurring, in that order?A. P(A + B)
B. P(A) • P(B)
C. P(A) + P(B)
D. P(A x B)

Answers

Answer:  The correct option is (B) P(A) • P(B).

Step-by-step explanation:  Given that the probability for success of an event is P(A) and the probability of success of a second event is P(B).

We are to find the probability of both events occurring, in that order.

We know that

if two events are independent of each other, then the probability of the intersection of the two events is given by the product of the probabilities of the events.

Here, the event that both events occur is given by (A ∩ B).

And, so the probability of both events occurring, in that order will be

P(A\cap B)=P(A).P(B).

Thus, the required probability is P(A) • P(B).

Option (B) is CORRECT.
D. P(A x B)

To work out the success of both events you have to multiply them together. I'd seriously reccomend learning this rule as it's very important later on in mathematics as it's basically the foundation of all probability statistics.
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