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Amiraneli [1.4K]

2 years ago

5

Can someone please answer these 4 questions they don’t look hard- but I just need to understand please!! (If you can provide the

answer please!!!!!) -50 points please answer truthfully I’ll give brainliest!

2 answers:

romanna [79]2 years ago

8 0

Answer:

the ans are

Step-by-step explanation:

1.= 1.25m/s

2.=30cm/s

3.=1260m

4.=50sec

not sure of 3 no

maw [93]2 years ago

8 0

Answer:

(1) His speed would be 1.25 seconds when you divide 40(speed) by 50 (distance).

(2) His average speed would be 30 seconds when I would divide the total distance, by the elapsed time.

(3) 1,260, when i multiplied 420 by 3.

(4) It will take him 50 seconds, and I got this by dividing 300 with 6.

Note:

Pls don't forget to brainliest :) Thank you!

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

andriy [413]

Answer:

The point that maximizes the objective function is (3,0)

Step-by-step explanation:

we have

Constraints:

$x\geq 0\\y\geq 0\\-x + 3\geq y\\y\leq \frac{1}{3}x+1$

Using a graphing tool

The feasible region is the shaded area

see the attached figure

The vertices of the feasible region are

(0,0),(0,1),(1.5,1.5) and (3,0)

we know that

To find the point in the feasible region that maximizes the objective function, replace each ordered pair of vertices in the objective function and then compare the results.

The objective function is

$C=5x-4y$

For (0,0) -----> $C=5(0)-4(0)=0$

For (0,1) -----> $C=5(0)-4(1)=-4$

For (1.5,1.5) -----> $C=5(1.5)-4(1.5)=1.5$

For (3,0) -----> $C=5(3)-4(0)=15$

therefore

The point that maximizes the objective function is (3,0)

8 0

2 years ago

Describe how you determined which fraction were already in the simplest form

MatroZZZ [7]

If the numerator and the denominator do not have a greatest common factor then the faction is in simplest form

7 0

2 years ago

A banner is made of 8 equel parts five of the parts are green three of the parts are yellow

irga5000 [103]

Your question is...?

3 0

1 year ago

Marrrta [24]

Answer:

option 1.

Step-by-step explanation:

4 0

2 years ago

Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

${r}^{2} = {x}^{2} + {y}^{2}$

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

Or

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

4 0

2 years ago