MATHEMATICS HIGH SCHOOL

If a number rounded to the nearest tenth is 10.1, which of the following could be the number?

Answers

Answer 1
Answer: it could be 10.11 10.12 10.13 10.14 
as long as the number next to the one is less than five it will become 10.1

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Write a polynomial that describes the area of the shaded region.The area of the shaded region is cubic units.
(Simplify your answer. Type an expression using x as the variable.)
N
N
X+7

Answers

so if we take the area of the whole square that's shaded, and then subtract from it the area of the square that's not shaded, what's leftover is the area we never subtracted, namely the shaded region.

\stackrel{ \textit{shaded square} }{(x+7)(x+7)}~~ - ~~\stackrel{ squarish~hole }{(2)(2)}\implies \stackrel{\textit{F O I L}}{(x^2+14x+49)-4} \n\n\n ~\hfill~ x^2+14x+45~\hfill~

What times 5 equals 70

Answers

14 x 5 = 70 think like this,
5+5+5+5+5+5+5+5+5+5+5+5+5+5
14, becuase 14x5=70 all your doing is counting by 5s and stop when you get to 70 which is 14

1. In your response, consider the specific ways a business professional might need to communicate information using a chart or graph. 2. Provide one specific example of a chart and one specific example of a graph in a business situation in which you would best be able to communicate business data.
3. State which chart and graph type you would use and why. How would this communication tool be better than text?

Answers

A BUSSINESS MEETING A GROUP MEETING AS WHILE!!!!!!!!!!!!!!!!!!!

Six years after a tree was planted, its height was 7 feet. Nine years after it was planted, its height was 16feet. Which of the following equations gives the heighty, in feet, of the tree after x years if the tree grows at
a constant rate? Check all of the boxes that apply.
y - 6 =3(x - 10)
y-16 = 3(x-9)
y = 3x - 11
y=-3x - 23

Answers

I'm not good in this but.....

x = years

9x-6x = 16-7

3x = 9

x = 3

That means the tree will grow three feet per year.

For the first 500 minutes used each month, the customer is charged a flat rate of $50. These 500 minutes are "included" in their monthly plan.For any additional minutes used, the customer is charged an additional $.10 per minute.
Is it linear

Answers

yes. goes up 10 constantly

The diagram shows a vertical tower DC on a horizontal ground ABC. ABC is a straight line.

The angle of elevation of D from A I'd 28°.

The angle of elevation of D from B is 54°.

AB=25m

Calculate the height of the tower.

Give your answer in 3 significant figures.

I need working out. Plz help me.

Answers

the measure of ABD=180°- 54°=26°
and then the measure of ADB= x
and x + 26° + 28°= 180°, sum of anlgle in a triagle property
 it means x= 180°- 26-28=126°
application of sinus law in the triangle

sin 28 / BD = sin 126/ AD = sin 26/ 25 so we can deduce that 

AD= 25sin126 / sin26= 46.12
let 's consider the triangle ADC, so for finding h, we have sin 28 = h / AD
and then h = AD x sin28=21.65

Calculate the height of the tower is 21.65
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