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PtichkaEL [24]
3 years ago
12

It takes Jeremy 6 hours to paint a room. If it takes 4 hours for Jeremy and Marcus to paint the room together, how long does it

take Marcus if he paints the room alone?
A) 5 hours
B) 8 hours
C) 10 hours
D) 12 hours
E) 14 hours
Mathematics
1 answer:
ASHA 777 [7]3 years ago
7 0

Answer:

12 D. Is the answer

Step-by-step explanation:

The equation we will use is  

1

6

+  

1

x

=  

1

4

. Solve the equation by multiplying each term by the LCM of the denominator, 12x. The equation is now 2x + 12 = 3x. We solve and find x = 12. It will Marcus 12 hours to paint the room alone.

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A coin is tossed and a spinner with three equal-sized sections labeled 3, 6, and 9 is spun. What is the probability of getting h
Mariana [72]

Answer:

The answer is 1/3.

Step-by-step explanation:

A coin has either heads or tails. The odds of a coin getting heads is 1/2.

There are three equal-sized sections with numbers 3, 6 and 9 on the spinner. There are two sections with numbers greater than 3, which are 6 and 9. The odds of getting a number greater than 3 is 2/3.

To find the overall probability of both incidents occurring, the two fractions are multiplied together, which is 1/2 * 2/3 = 1/3

4 0
3 years ago
Read 2 more answers
Which of the following is not a way to represent the solution of the inequality 2(x − 1) greater than or equal to −12?
maxonik [38]
First you need to simplify the left side of the equation to get 2x-2 \geq -12
Then you add by two on both sides to get 2x \geq -10
Finally you divide by 2 on both sides to get x \geq -5
6 0
3 years ago
Pls help .................
Sophie [7]

Answer:

Step-by-step explanation:

I'm guessing at this a bit.

The final score will depend on what is par for each hole and/or for the entire course.  The scores for the first four rounds were all negative.  That means Ko required fewer strokes to hit the hole than the number considered "par" for the course.

Let P stand for the Par of the course.  Then the score for each round would be:

P-3

P-4

P-7, and

P-2

The sum:  4P - 16 is her score for the first four rounds.  I have no clue if there are more than 4 rounds, but if there are, the equation would be:

For n rounds:

nP - ∑x_{n}

where ∑x_{n} is the sum of over/under pars for the n rounds.

8 0
2 years ago
Solve the formula v=s^2h for s
Mademuasel [1]

Answer:

The answer is A.

Step-by-step explanation:

Algebraic equations have two components other than the equal sign: the constant and the variable. A constant is a number (0, 1, 2, ...). A variable is a quantity that can be any constant unless specified to be a specific one. For example, if I say x = 2, then x has the value of 2 and only 2.

If I wanted to solve an algebraic equation like 2x - 4 = 6, I have to isolate x so that x is on one side of the equation and a constant is on the other side of the equation. This would mean that x would equal a number, its sole purpose. Specifically, I'd have to apply reverse GEMA (Grouping, Exponents, Multiplication, Addition) to solve this equation.

<u>We add 4 on both sides.</u>

2x - 4 = 6

2x = 10

<u>We divide by 2 on both sides.</u>

x = 5

But what about equations that only have variables? These are known as literal equations. Just like with any algebraic equation, you'd solve for the given variable because in the end, variables are just unspecified constants (numbers). But, instead of the answer being a constant like always, the answer has to have variables.

<u>For example, if I wanted to solve y = mx + b for b, I'd would isolate the given variable like in any other algebraic equation. In this case, we have to subtract mx on both sides.</u>

y = mx + b

y - mx = b

b = y - mx

<u>The same thing goes for V = s^2 * h for s. First, I have to isolate s^2 first before I consider isolating s. We do this by dividing h on both sides.</u>

V = s^2 * h

V / h = s^2

<u>We now have to square root both sides.</u>

√(V / h) = s

s = √(V / h)

<u>Answer A is the correct answer.</u>

8 0
3 years ago
An amount of 19,000 is borrowed for 7 years at 7.75% interest, compounded annually. If the loan is paid in full at the end of th
Kruka [31]

Answer:

The Amount paid back after 7 years is Rs 32,038.674  .

Step-by-step explanation:

Given as :

The loan amount borrowed = p = Rs 19,000

The rate of interest applied = r = 7.75% compounded annually

The time period of loan = t = 7 years

Let The Amount paid back after 7 years = Rs A

<u>Now,From Compound Interest method</u>

Amount = Principal × (1+\dfrac{\texrm rate}{100})^{\textrm time}

Or, A = p × (1+\dfrac{\texrm r}{100})^{\textrm t}

Or, A = Rs 19,000 × (1+\dfrac{\texrm 7.75}{100})^{\textrm 7}

Or, A = Rs 19,000 × (1.0775)^{7}

Or, A = Rs 19,000 × 1.686246

∴   A = Rs 32,038.674

So, The Amount paid back after 7 years = A = Rs 32,038.674

Hence, The Amount paid back after 7 years is Rs 32,038.674  . Answer

7 0
4 years ago
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