Could someone please answer these 4 questions?The first to answer and explain how they did it gets brainlest :) Thanks!

Help with thses for questions and i will mark brainlest

nataly862011 [7]

Answer:

The inequality that best suits the description is choice C because Addison wants to ride her bicycle more than 80 miles this week so the inequality before 80 is used greater than>. the addition sign is put between 6m and 18 because the total of this two miles will give the total of more than 80 miles. So Addison's goal can be achieved.

the answer to other question isB. x=417.6

0.5x= 287- 78.2

= 208.8

x= 208.8÷5

x= 417.6

5 0

3 years ago

Write an expression to represent: 6 times the difference of 5 and 2.

Keith_Richards [23]

Answer:

See below

Step-by-step explanation:

The difference of 5 and 2

5-2 <===== now multply it by 6

6 x (5-2)

4 0

2 years ago

Read 2 more answers

The figure (triangular prism) below has a height of 18 inches and a volume of 864 cubic inches. What is the area of the base of

Aleonysh [2.5K]

Answer:

The answer is B.

Step-by-step explanation:

It is given that the formule of volume of prism is V = a × h where a stands for area of cross-section. Then, substitute the following value into the formula :

V = 864 in³

h = 18 in

a = ?

864 = a × 18

Next, you have to make a as the subject by dividing 18 on both sides :

864 ÷ 18 = a × 18 ÷ 18

48 = a

a = 48 in²

5 0

4 years ago

Geometry- The base of a triangle is sqrt 18 cm and it’s height is sqrt 8 cm find it’s area.

inn [45]

Answer:

72 Centimeters

Explanation:

Formula for area: 1 /2 b · h

b = Base (18 cm.)

h = height (8 cm.)

1 / 2 Base: 9

height: 8

9 · 8 = 72

Therefore the area of the triangle is 72 centimeters

6 0

3 years ago

According to Boyle's Law, if the temperature of a confined gas is held fixed, then the product of the pressure P and the volume

Bad White [126]

If PV = 800, then P can be written as a function of V,

P(V) = 800 / V

(a) The average rate of change of P as V increases from 200 to 250 in³ is then

(P (250) - P (200)) / (250 in³ - 200 in³) = (3.2 lb/in² - 4lb/in²) / (50 in³)

... = -0.016 (lb/in²)/in³

(Or -0.016 lb/in⁵, but I figure writing the rate as (units of pressure) per (unit volume) makes more sense.)

(b) We can also write V as a function of P :

V(P) = 800 / P

Take the derivative:

V'(P) = - 800 / P²

which immediately demonstrates that V'(P) ∝ 1 / P², as required. (The fish-looking symbol, ∝, means "is proportional to".)

If differentiating is supposed to be more involved, you can use the limit definition:

$V'(P)=\displaystyle\lim_{h\to0}\frac{V(P+h)-V(P)}h$

$V'(P)=\displaystyle\lim_{h\to0}\frac{\frac{800}{P+h}-\frac{800}P}h$

$V'(P)=\displaystyle\lim_{h\to0}\frac{\frac{800P-800(P+h)}{P(P+h)}}h$

$V'(P)=\displaystyle800\lim_{h\to0}\frac{-\frac h{P(P+h)}}h$

$V'(P)=\displaystyle-800\lim_{h\to0}\frac1{P(P+h)}=-\dfrac{800}{P^2}$

7 0

3 years ago