a tree is standing by the side of the building. 2/5th of the height of the tree is above the building level. the building is 9 metres high. what is the height of the tree?

Answers

Answer 1

Answer: If 2/5 of the tree is above the building, the other 3/5 must be down next to the building.

3/5(tree) = 9m

Multiply each side by 5/3 :

tree = (5/3) (9) = 15 meters

Answer 2

Answer: 9 + ( 2 / 5 )*h = h =>45 + 2h = 5h => 45 = 3h => h = 45 / 3 => h = 15 metres.

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Find -x + 10 less than 0.

0
-x + 10
x - 10

Answers

for
-x+10 < 0
x<-10

for
x-10<0
x<10

This table represents the boiling point of water at different altitudes. Which equation represents water's boiling point (y) based on the change in altitude (x)? Altitude (thousands of feet) Boiling Point of Water (Fahrenheit) (sea level) 0 212 0.5 211.1 1.0 210 2.0 208.4 2.5 207.5 3.0 206.6 4.0 204.8 4.5 203.9

Answers

Answer:

The required equation is $y=-1.8x+212$ .

Step-by-step explanation:

We are given,

The table showing the boiling points of water at different altitudes.

We will find the slope of the equation using $m=(y_(2)-y_(1))/(x_(2)-x_(1))$ .

Taking points (0,212) and (0.5,211.1) and substituting in the formula,

Slope is $m=(211.1-212)/(0.5-0)$

i.e. Slope is $m=(-0.9)/(0.5)$

i.e. Slope is -1.8

Substituting slope and the point (0,212) in the equation $y=mx+b$ , we will find the value of y-intercept 'b'.

That is, $212=-1.8* 0+b$ i.e. b= 212

Thus, the required equation is $y=-1.8x+212$ .

Determine the simplified expression used to represent the perimeter of the rectangle.HELP I TEST IS ABOUT TO END

-2x+14
30

Answers

the answer is -2(x-7)

The slope of the line passing through the points (2, 7) and (-4, 8) is -6 -1/2 -1/6

Answers

Hello,

m=(8-7)/(-4-2)=-1/6
Answer C

Answer:

-1/6

Step-by-step explanation:

A college used a $5,000 gift from an alumnus to make two student loans. The first was at 5% annual simple interest to a nursing student. The second was at 7% annual simple interest to a business major. If the college collected $310 in interest the first year, how much was loaned to each student?

Answers

Hello,

Let x the amount allocated to the 1 student
Let y the amount allocated to the 2 student

x+y=5000
5/100 *x +7/100 * y =310

==>
5x+7y=31000 (1)
x+y=5000 (2)
(1)-5*(2)==>
2y=6000 ==>y=3000 and x=5000-3000=2000
Proof:
2000+3000=5000
5/100*2000+7/100*3000=100+210=310

Need help again ?!???

Answers

Answer:

11.47

Solution,

Fromthe figure,

$cos \: 55 = (PQ)/(PR)$

$cos \: 55 = (PQ)/(20)$

$PQ = 20 \: cos \: 55$

$PQ= 11.472$

$PQ= 11 .47$

Hopethis helps...

Goodluck on your assignment...

Answer:

11.47

Step-by-step explanation:

Use SohCahToa. In this problem, you are given the hypotenuse and you are trying to solve for the adjacent side so it will be cosine. (cosine = $(adjacent)/(hypotenuse)$ )

1. set up the equation

cos55 = $(x)/(20)$

2. Multiply both sides by 20 to solve for x

20 · cos55 = 11.47

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