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2 years ago

What’s the answer to (-8x) + x + (-2x)

Mathematics

2 answers:

Tresset [83]2 years ago

8 0

$(-8x) + x + (-2x) = -8x + x - 2x = -9x$

kotykmax [81]2 years ago

4 0

Answer:

-9x

Step-by-step explanation:

-8x + x +(-2x)

*A negative multiplied by a positive makes a negative

-8x + x -2x

-7x-2x

-9x

Hope this helps!

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Pat needs to determine the height of a tree before cutting it down to be sure that it will not fall on a nearby fence. The angle

dem82 [27]

Answer:

229.23 feet.

Step-by-step explanation:

The pictorial representation of the problem is attached herewith.

Our goal is to determine the height, h of the tree in the right triangle given.

In Triangle BOH

$Tan 60^0=\dfrac{h}{x}\\h=xTan 60^0$

Similarly, In Triangle BOL

$Tan 50^0=\dfrac{h}{x+60}\\h=(x+60)Tan 50^0$

Equating the Value of h

$xTan 60^0=(x+60)Tan 50^0\\xTan 60^0=xTan 50^0+60Tan 50^0\\xTan 60^0-xTan 50^0=60Tan 50^0\\x(Tan 60^0-Tan 50^0)=60Tan 50^0\\x=\dfrac{60Tan 50^0}{Tan 60^0-Tan 50^0} ft$

Since we have found the value of x, we can now determine the height, h of the tree.

$h=\left(\dfrac{60Tan 50^0}{Tan 60^0-Tan 50^0}\right)\cdotTan 60^0\\h=229.23 feet$

The height of the tree is 229.23 feet.

5 0

3 years ago

A foot ball field measures 100m by 72m. A school marks a football field similar in shape to a fullsize football field but only 3

Anna35 [415]

Answer: 21.6 m

Step-by-step explanation:

Given

A football field measures $100\ m\times 72\ m$

If a football field similar in shape to a full size has a length $l=30\ m$

The ratio of the length of the original to the small field is the same

Assume the width of the small field is w

$\therefore \dfrac{100}{30}=\dfrac{72}{w}\\\\\Rightarrow w=30\times \dfrac{72}{100}\\\\\Rightarrow w=21.6\ m$

Thus, the width of the field is 21.6 m

6 0

2 years ago

What is the measure of angle TSU?

Elden [556K]

Answer:

63°

Step-by-step explanation:

TSU = 180 - 117 = 63

6 0

2 years ago

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Which function is shown in the graph below? Please hurry!

neonofarm [45]

Answer: Choice D

$\log_6(x)$ which is the log base 6 of x

====================================================

Explanation:

Since you're given a list of choices, you can plug in each x coordinate of the points shown and see what the y values are.

If you plugged x = 6 into choice A, you would end up with y = -1 but we want y = 1 instead. So choice A can be crossed off the list.

If you plugged in x = 6 into choice B, then you would get y = -2.6 approximately. So this answer won't work either.

Try x = 6 into choice C, and you'll get a division by zero error. So that can be crossed off too.

The only thing left is choice D. This function works because x = 0.5 leads to y = -0.4 approximately. Also, x = 1 and y = 0 pair up together. Similarly, the input x = 6 produces the output y = 1.

note: you may have to use the change of base formula to compute the log values. The change of base formula is log(b,x) = log(x)/log(b)

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2 years ago

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One in four people in the u.s. owns individual stocks. you randomly select 12 people and ask them if they own individual stocks.

kumpel [21]

B because 1/4 people own individual stocks. 1/4 of 12 is 3.

3 0

3 years ago