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3 years ago

Help!! Me with my aleks!

Mathematics

1 answer:

Mashcka [7]3 years ago

5 0

Answer:

9x + 36 = 10

Step-by-step explanation:

Given

$\frac{3}{4}$ x + 3 = $\frac{5}{6}$

Multiply by the lowest common multiple of 4 and 6, that is 12

12 × $\frac{3}{4}$ x + 12 × 3 = 12 × $\frac{5}{6}$ , that is

9x + 36 = 10 ← equation without fractions

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What is the equation for the sum of three consecutive even numbers totaling 198.

Paul [167]

Let the first number be represented by x. Then the next is x+2, the next x+4. Add these 3 expressions together and equate the sum to 198.

3 0

3 years ago

Solve. -1/2 + (3/4 x 4/9) =

choli [55]

Answer:

D, -1/6

Step-by-step explanation:

-1/2+(3/4*4/9)

Multiply equation inside the parentheses

3/4*4/9=12/36=1/3

Substitute 1/3 into original equation

-1/2+1/3=1/3-1/2

Make denominators the same

2/6-3/6

Simplify

-1/6, D

4 0

3 years ago

Suppose a box contains 3 defective light bulbs and 12 good bulbs. Two bulbs are chosen separately from the box without replaceme

Flauer [41]

Answer:

$Probability = \frac{12}{35}$

Step-by-step explanation:

Given

Represent Defective Bulbs with D and non good bulbs with G

$D = 3$

$G = 12$

The probability that one is defective and the other is not can be represented with: (D and G) or (G and D)

Which means that the defective is selected first, then the good one or the good one is selected first, then the defective one.

This is then calculated as:

$Probability = \frac{n(D}{Total} * \frac{n(G)}{Total - 1} + \frac{n(G}{Total} * \frac{n(D)}{Total - 1}$

We used Total - 1 on second selections because it is a probability without replacement

$Probability = \frac{3}{15} * \frac{12}{15- 1} + \frac{12}{15} * \frac{3}{15- 1}$

$Probability = \frac{3}{15} * \frac{12}{14} + \frac{12}{15} * \frac{3}{14}$

$Probability = \frac{1}{5} * \frac{6}{7} + \frac{2}{5} * \frac{3}{7}$

$Probability = \frac{6}{35} + \frac{6}{35}$

$Probability = \frac{12}{35}$

7 0

3 years ago

Derek wants to buy a skateboard for $56.00. The store is offering a discount of 5% on all items. What price will Derek pay for t

Nuetrik [128]

Answer:

53.2$

Step-by-step explanation:

5/100 × 56 = 2.8

So, 56.00 $ - 2.8$ = 53.2$

8 0

3 years ago

Read 2 more answers

From an 8- foot board, a carpenter sawed off one piece that was 2 3/4 feet long and another piece that was 3 1/2 feet long. How

alexdok [17]

Answer:

1 3/4 or 1.75

Step-by-step explanation:

An easy way to do this is to convert to decimals

1/4 = 0.25

2/4 = 0.5

3/4 = 0.75

Now, for the numbers for this problem.

2 3/4 would be equal to 2.75

3 1/2 would be equal to 3.5

Add those two numbers together and you get 6.25

Subtract that from 8 and you get 1.75 or 1 3/4

3 0

4 years ago