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3 years ago

Add, answer as a fraction: 1/15 + 3/12

Mathematics

2 answers:

Nataly [62]3 years ago

7 0

First change 3/12 to 45/180 and 1/15 to 12/180 and 12+45=57 so the answer is 57/180

charle [14.2K]3 years ago

3 0

First you need to find the LCD, which is 60 in this case. After you find the LCD the rest is easy. Just add the two numbers together:

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Find slope of the graph 9x-3y=15

LekaFEV [45]

<h3><u>Explanation</u></h3>

Convert the equation into slope-intercept form.

$y = mx + b$

where m = slope and b = y-intercept.

What we have to do is to make the y-term as the subject of equation.

$9x - 3y = 15 \\ 9x - 15 = 3y \\ \frac{9x - 15}{3} = y$

Simplify

$\frac{9x}{3} - \frac{15}{3} = y \\ 3x - 5 = y \\ y = 3x - 5$

From y = mx+b, the slope is 3.

<h3><u>Answer</u></h3>

$\large \boxed {slope = 3}$

4 0

3 years ago

The value of sales at the shop decreases from 145,000 a year to 129,000 find the percentage decrease in the value of sales

iren [92.7K]

Answer:

11.0344828%

Step-by-step explanation:

145000 - 129000 = 16000.

16000/145000 = 16/145 = 0.110344828

Therefore there was a 11.0344828% decrease

5 0

3 years ago

Read 2 more answers

A<br> If Lin sells 6 boxes of popcorn, will she make her goal? State yes or no.

Pavel [41]

Answer:

No.

First, multiply 6 x 4 ($4 is the amount of money he makes from each sale).

6 x 4 = $24

If Lin's goal is $32, and he sells 6 boxes of popcorn for only $24, then he will not reach his goal in that specified range.

8 0

2 years ago

Every year, roughly 25,000,000 kg of hair is cut in the United States. Each kilogram of hair contains about 0.0002 kg of zinc, a

Nesterboy [21]

$20,000

25,000,000 x 0.0002 = 5,000

5,000 x $4.00= $20,000

4 0

3 years ago

Find the missing value. Show your work. please

Sophie [7]

#1
$sin(51^o)= \frac{y}{12} \ \ \to \ \ y=12*sin(51^o)=12* 0.7771 \approx 9.33$

#2
$\theta=arccos( \frac{5^2+13^2-12^2}{2*5*13}) = arccos( \frac{25+169-144}{130})=arccos( \frac{50 }{130})= \\ \\ arccos(0.3846) \approx67.4^o$

#3
$tan(13^o)= \frac{x}{24} \ \ \to \ \ x=24*tan(13^o)=24* 0.2309 \approx 5.54$

#4
$sin(20^o)= \frac{10}{x} \ \ \to \ \ x= \frac{10}{sin(20^o)} = \frac{10}{0.342} \approx 29.24$

5 0

3 years ago