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3 years ago

Can someone guide me through this progress?

Mathematics

1 answer:

IgorC [24]3 years ago

7 0

To find the mean you add all the numbers and divide by how many numbers there are so in this case 2+3+4+4+6= 19, there are 5 numbers so divide 19/5

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Typing paper measures 8 1/2 inches wide and 11 inches long find the perimeter of the typing paper

exis [7]

P=2l+2w ---> P=2(11)+2(8.5)     -- Substitute
P=2(11)+2(8.5) ---> P=22+17     -- Multiply
P=22+17 ---> P=39 inches     -- Add

6 0

3 years ago

Identify the solution to the system of equations <br> {x=-2y-6 -3x-7y=18

Gemiola [76]

Answer:

(- 6, 0 )

Step-by-step explanation:

x = -2y - 6 → (1)

- 3x - 7y = 18 → (2)

substitute x = - 2y - 6 into (2)

- 3(- 2y - 6) - 7y = 18 ← distribute parenthesis and simplify left side

6y + 18 - 7y = 18

- y + 18 = 18 ( subtract 18 from both sides )

- y = 0 , then

y = 0

substitute y = 0 into (1)

x = - 2(0) - 6 = 0 - 6 = - 6

solution is (- 6, 0 )

7 0

3 years ago

Read 2 more answers

Let me know if I'm right

ycow [4]

Looks correct to me :)

5 0

3 years ago

Find the equation of the line that contains the point (-1, -4) and is parallel to the line 6x+7y=13 . Write the equation in slo

sineoko [7]

Answer: $y=-\dfrac67x-\dfrac{34}{7}$

Step-by-step explanation:

Slope-intercept form: y=mx+c (i) , of linear equations, m= slope and c= y-intercept of the line.

6x+7y=13in slope intercept form would be :

$7y=13-6x\\\\\Rightarrow\ y=\dfrac{-6}{7}x+\dfrac{13}{7}$

Comparing to (i) , $m = \dfrac{-6}{7}$

Slope of parallel lines are equal.

So, slope of required line = $m = \dfrac{-6}{7}$

Equation of line with slope m and passes through point : $(y-b)=m(x-a)$

So, equation of required line:

$(y-(-4))=\dfrac{-6}{7}(x-(-1))\\\\\Rightarrow\ (y+4)=\dfrac{-6}{7}(x+1)\\\\\Rightarrow\ y+4=\dfrac{-6}{7}x-\dfrac{6}{7}\\\\\Rightarrow\ y=-\dfrac67x-\dfrac{6}{7}-4\\\\\Rightarrow\ y=-\dfrac67x-\dfrac{34}{7}$

6 0

3 years ago

Sara buys a sweater at a department store. The sweater costs $3030. The store is having a 2525% off sale on everything in the st

Vaselesa [24]

Answer:

25% of 3030 is 757.5, so basically she is saving 757.5 dollars

6 0

3 years ago