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2 years ago

What is the sum of−1/3−(−1/2)

Mathematics

1 answer:

Eddi Din [679]2 years ago

8 0

Answer:

0.16666666666 and keep on going. you can add a line above the number to show infinite 6

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Joe can weed the garden twice as fast as his sister Janet. Together they can weed the garden in 2 hours. How long would it take

scoundrel [369]

Answer:

Joe: 3 hrs

Janet: 6hrs

Step-by-step explanation:

joe takes x hours

so in 1 hr he does 1/x of the garden

janet takes 2x hours

so in 1 hr she does 1/(2x) of the garden

In one hour together they do 1/2 of the garden

1/x + 1/(2x) = 1/2

2/(2x) + 1/(2x) = 1/2

3/(2x) = 1/2

Cross multiply

6 = 2x

x = 3

Joe: 3 hrs

Janet: 6hrs

4 0

3 years ago

Mario has a remaining balance of $1,300 on his credit card his credit card has an APR of 20% how much will he pay in interest in

nydimaria [60]

The correct answer for this problem is 6,500 in one month

4 0

2 years ago

Emma has money into savings accounts. One rate is 8% and the other is 12%. If she has $450 more in the 12% account and the total

AveGali [126]

Let's say that the value invested in the account with a rate of 8% is "x", then the amount invested in the account with a rate of 12% is:

$x+450$

To calculate the total interest we need to calculate the interest of each individual account and sum them:

$\begin{gathered} \frac{8}{100}\cdot x=0.08\cdot x \\ \frac{12}{100}\cdot(x+450)=0.12\cdot x+54 \end{gathered}$

The total interest is the sum of the two expressions above:

$\begin{gathered} 220=(0.08\cdot x)+(0.12\cdot x+54) \\ 220=0.08\cdot x+0.12\cdot x+54 \\ 220-54=0.2\cdot x \\ 166=0.2\cdot x \\ 0.2\cdot x=166 \\ x=\frac{166}{0.2} \\ x=830 \end{gathered}$

The value invested in the account with 8% interest is 830, the one invested in the account with 12% interest is 1280.

7 0

1 year ago

Chec

nexus9112 [7]

Answer:

Functions: y = -x + 11, y = 2x^2 - 6x + 4, y = 7

Not Functions: x = 3, x^2 + y^2 = 81, y^2 = -5x - 12

8 0

2 years ago

Suppose you are told that the number of X Station gaming consoles increased linearly for the month of December. What can the slo

I am Lyosha [343]

It could tell you that your amount sold is going up steadily per unit of time

8 0

3 years ago

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