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3 years ago

Round 8.61 to the nearest tenths

Mathematics

1 answer:

tatiyna3 years ago

5 0

8.6 because 1 is not great enough to boost that 6 up to a 7

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Community property a d simplify

Natalija [7]

Ah, the commutative property.

a + b = b + a

xy = yx

When using the commutative property - a good way to remember it is to think of a community, in which each community member helps one another to a mutual outcome.

Using the commutative property we can rearrange this equation into a more sensical format:

-8.9 + 6.7 - 1.1

6.7 - 1.1 - 8.9

6.7 - 1.1 = 5.6

5.6 - 8.9 = -3.3

4 0

3 years ago

What is an equation of the line that passes through the points (-6, 5) and (6, 7)?

e-lub [12.9K]

Answer:

$y=\frac{1}{6}x+6$

Step-by-step explanation:

Let $(x_1,y_1)\rightarrow(-6,5)$ and $(x_2,y_2)\rightarrow(6,7)$

Determine slope

$m=\frac{y_2-y_1}{x_2-x_1}\\ \\m=\frac{7-5}{6-(-6)}\\ \\m=\frac{2}{6+6}\\ \\m=\frac{2}{12}\\ \\m=\frac{1}{6}$

Use either ordered pair to find the y-intercept

$y=mx+b\\\\7=\frac{1}{6}(6)+b\\\\7=1+b\\\\6=b$

Final equation

$y=\frac{1}{6}x+6$

4 0

2 years ago

PLEASE HELP

Kitty [74]

Answer:

You don't need to create 3 posts for a single question. I already answered it in your most recent one.

8 0

1 year ago

Length of a rectangle is 5 cm longer than the width. Four squares are constructed outside the rectangle such that each of the sq

azamat

Answer:

The perimeter of rectangle is $18\ cm$

Step-by-step explanation:

Let

x-----> the length of the rectangle

y----> the width of the rectangle

we know that

$x=y+5$ ----> equation A

$120=xy+2x^{2}+2y^{2}$ ---> equation B (area of the constructed figure)

substitute the equation A in equation B

$120=(y+5)y+2(y+5)^{2}+2y^{2}$

$120=(y+5)y+2(y+5)^{2}+2y^{2}\\ 120=y^{2}+5y+2(y^{2}+10y+25)+2y^{2}\\ 120=y^{2}+5y+2y^{2}+20y+50+2y^{2}\\120=5y^{2}+25y+50\\5y^{2}+25y-70=0$

using a graphing calculator -----> solve the quadratic equation

The solution is

$y=2\ cm$

Find the value of x

$x=y+5 ----> x=2+5=7\ cm$

Find the perimeter of rectangle

$P=2(x+y)=2(7+2)=18\ cm$

8 0

3 years ago

In a recent 10 year period , the change in the number of visitors to an amusement park was about 15,000 visitors. What was the m

Andrej [43]

1,500 was the mean yearly change

7 0

4 years ago