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3 years ago

A worker takes 3 hours to do a job. A new worker takes 5 hours. How long does it

Mathematics

1 answer:

Mariulka [41]3 years ago

6 0

time taken by a worker= 1/3 hours

time taken by the new worker= 1/5 hours

time taken to complete the work if they work together

= 1/3 + 1/5

= 5+3/15

=8/15

=15/8 hours

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Help please and please no links

Naddik [55]

You answer is 152

Step by step:
Divide it into 2 rectangles
1st rectangle 10x8=80
2nd rectangle 12x6=72
80+72=152

7 0

3 years ago

I need help asap please choose all

lubasha [3.4K]

Answer:

28X-8 & 4x 7X- 4x2 for the first one

and 12y+7y & 19y

Step-by-step explanation:

Hope this helps have a great day

3 0

4 years ago

Read 2 more answers

A bucket contains 40 red balls, 25 black balls, and 35 white balls. Two balls are drawn at random. What is the probability that

Lyrx [107]

Answer:

$Probability = \frac{1}{5}$ or $Probability = 0.2$

Step-by-step explanation:

Given

$Black = 25$

$White = 35$

$Red = 40$

Required

Determine the probability of selecting Black and Red

First, we need to calculate the number of red and black balls

The probability is calculated as thus:

$Probability = P(Black\ and \ Red) \ or\ P(Red\ and \ Black)$

Convert to mathematical expressions

$Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)]$

Solve for each probaility;

$P(Black) = \frac{Black}{Total} = \frac{25}{100}$

$P(Red) = \frac{Red}{Total} = \frac{40}{100}$

So, we have:

$Probability = [P(Black) *P(Red)] + [P(Red) *P(Black)]$ $Probability = [\frac{25}{100} *\frac{40}{100}] + [\frac{40}{100} *\frac{25}{100}]$

$Probability = [\frac{1000}{10000}] + [\frac{1000}{10000}]$

$Probability = [\frac{1}{10}] + [\frac{1}{10}]$

$Probability = \frac{1+1}{10}$

$Probability = \frac{2}{10}$

$Probability = \frac{1}{5}$

$Probability = 0.2$

7 0

3 years ago

Arrange the steps as you would to solve:

Lena [83]

Answer:

1) Add 3n to both sides

2) Subtract 5 from both sides

3) Divide both sides by 6

n=3

Step-by-step explanation:

3n+5=23-3n

+3n +3n

6n+5=23

-5 -5

6n=18

/6 /6

n=3

4 0

3 years ago

What is the slope of the graph of y = -3x? -1/3 1/3 -3 3

NISA [10]

Answer:

Slope is -3

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

m - slope
b - y-intercept

Step-by-step explanation:

Step 1: Define

Identify

y = -3x

↓ Compare to y = mx + b

Slope m = -3

y-intercept b = 0

3 0

3 years ago

Read 2 more answers