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2 years ago

Name the property that the following statement illustrates 84+8=8+84

Mathematics

1 answer:

Lady_Fox [76]2 years ago

6 0

Answer:

the commutative property of addition :)

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What is the range of y=-3sin(x)? -1Sys1 -35453 0 - 1 = y = 1/3 DONE

algol13

Answer:

[-3, 3]

Step-by-step explanation:

The range of y = sin x is the interval [-1, 1].

When you multiply the function by -3, you invert the function (symmetry with respect to the x-axis) and stretch is by a factor of 3 vertically.

The range now is [-3, 3]

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2 years ago

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Lewis walked 9/10 of a mile. His friend walked 2/5 of that with him. How many Miles did his friend walk with him?

FrozenT [24]

Answer:

36/100 of a mile

Step-by-step explanation:

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2 years ago

Draw the straight line y = x + 2

Vesnalui [34]

Answer:

Graph is attached below

Step-by-step explanation:

You first need to plot any two points on the coordinate plane(you can also do more than two points to make it more accurate). Then, using a ruler connect the points and extend the line outwards.

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2 years ago

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If the bill is 61.20 with a 20% the TOTAL bill is what? 71.20 88.49 74.53 73.44

Nataliya [291]

Answer:

Step-by-step explanation:

73.44

if it is a 20% tip = 12.24

61.20 + 12.24= 73.44

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2 years ago

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Solve for x in the equation.

labwork [276]

Answer:

The solution is $\displaystyle x=1\pm \sqrt{47}$ . Fourth option

Explanation:

Solve for x:

$2x^2+3x-7=x^2+5x+39$

Move all the terms from the right to the left side of the equation, a zero in the right side:

$2x^2+3x-7-x^2-5x-39=0$

Join all like terms:

$x^2-2x-46=0$

The general form of the quadratic equation is:

$ax^2+bx+c=0$

Solve the quadratic equation by using the formula:

$\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

In our equation: a=1, b=-2, c=-46

Substituting into the formula:

$\displaystyle x=\frac{-(-2)\pm \sqrt{(-2)^2-4(1)(-46)}}{2(1)}$

$\displaystyle x=\frac{2\pm \sqrt{4+184}}{2}$

$\displaystyle x=\frac{2\pm \sqrt{188}}{2}$

Since 188=4*47

$\displaystyle x=\frac{2\pm \sqrt{4*47}}{2}$

Take the square root of 4:

$\displaystyle x=\frac{2\pm 2\sqrt{47}}{2}$

Divide by 2:

$\displaystyle x=1\pm \sqrt{47}$

First option: Incorrect. The answer does not match

Second option: Incorrect. The answer does not match

Third option: Incorrect. The answer does not match

Fourth option: Correct. The answer matches exactly this option

8 0

2 years ago