3 years ago

Find the difference of 67.2 and 23.9.

Mathematics

1 answer:

valentinak56 [21]3 years ago

8 0

the difference of 67.2 and 23.9 is 43.3

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what is the equation of the line that is perpendicular to the line y=3/5x+10 and passes through the point (15,-5)

riadik2000 [5.3K]

Answer:

$y = -\frac53x + 20$

Step-by-step explanation:

Hello!

A line that is perpendicular to another has an opposite-reciprocal slope.

Meaning:

Flip the sign (+/-)
Flip the fraction

The slope perpendicular to 3/5 would be -5/3.

We can solve for the y-intercept by plugging in the x and y values given from the coordinate into the equation with out new slope.

<h3 /><h3>Solve for B</h3>

$y = -\frac53x + b$
$-5 = -\frac53(15) + b$
$-5 = -25 + b$
$20 = b$

The y-intercept of the new line is 20.

The equation is $y = -\frac53x + 20$

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2 years ago

George buys a computer. He pays a deposit of £200 and six monthly instalments of £55. How much does George pay for his computer

Citrus2011 [14]

Answer:

530

Step-by-step explanation:

200+6(55)

6x55=330

200+330=530

5 0

3 years ago

Can you please help formate this problem

vovangra [49]

Take another picture

5 0

3 years ago

Which expression is equivalent to (XY^−6)^2<br><br> XY^−36<br> x^2y^−12<br> x ^2y^12<br> xy^36

Margaret [11]

Answer:

answer is b

Step-by-step explanation:

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8 0

3 years ago

What is the value of the unknown number in the verbal description? 5 times the sum of 12 and a number is 80.

mixer [17]

"5 times a sum of 12 and a number is 80" translates to the next equasion:

5 x (12+a) = 80

Now we just have to solve it to find the value of a.
$5 \times (12 + a) = 80 \\ 60 \times 5a = 80 \\ 5a = 80 - 60 \\ 5a = 20 \\ a = 20 \div 5 \\ a = 4$
The unknown number is 4.
D is the right answer.

4 0

3 years ago

Read 2 more answers