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3 years ago

7

The table gives predictions of the average costs of a gasoline car after the year 2030. Which graph best represents the relation

ship between time and the predicted cost?

2 answers:

Gekata [30.6K]3 years ago

6 0

Answer:

The line slightly curves.

Step-by-step explanation:

Got it right on Khan

kiruha [24]3 years ago

4 0

Answer:

It's the b graph

Step-by-step explanation:

Khan Academy.

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Two planes 2800km apart start flying towards each other at the same time. They meet 3.5 hours later. One plane flies 75km/hour f

uranmaximum [27]

Answer:

yes and good

Step-by-step explanation:

6 0

3 years ago

Okay this is my last one.. I think dfghmhgfd

Ainat [17]

<h2>○=> <u>Correct option</u> :</h2><h2> $\color{plum}\tt\bold{(B)}$ </h2><h3>○=> <u>Steps to derive correct option</u> :</h3>

We know that :

$\color{hotpink} \tt \: circumference \: of \: a \: circle\color{plum} = 2\pi r$

So, let the diameter of this circle be x.

Which means :

$=\tt2 \times \pi \times r$

$=\tt 2 \times x \times \pi = 12\pi$

$=\tt 2x\pi = 12\pi$

$=\tt x = \frac{12}{2}$

$= \tt \: x = 6 \: m$

Thus, the radius of the circle Robert drew = 6 m

Since the circle in option B has a radius of 6 m, it is the circle Robert drew.

▪︎<em>Therefore, the correct option is (B)</em>

8 0

3 years ago

What is the mean for this list of numbers 4,8,12,13

Gwar [14]

Answer:

4, 8, 12, 13

In order to find the mean you must add all of the values together and then divide by the number of numbers. 4 + 8 + 12 + 13 = 37

Now we divide: 37 ÷ 4 = 9.25

So the mean is 9.25

<h2> I hope this helps! :)</h2>

3 0

3 years ago

vlabodo [156]

Answer:

Part A Option B
Part B 5.71 l and 4.29 l

Step-by-step explanation:

<h3>Part A</h3>

Let x be the volume of 5% solution

<u>Then the volume of 40% solution is </u>

10 - x

<u>Amount of acid is 10*0.20 for resultant solution, x*0.05 for 5% solution and (10- x)*0.40 is for 40% solution:</u>

10*0.20 = x*0.05 + (10 - x)*0.40

Correct equation is B.

<h3>Part B</h3>

<u>Solving</u>

2 = 0.05x + 4 - 0.4x
0.35x = 2
x = 2/0.35
x = 5.71 l of 5% solution

and

10 - x = 10 - 5.71 = 4.29 l of 40% solution

8 0

3 years ago

Write an equation of a line that is perpendicular to y= -3/4x=2 and passes through (-4,1)

topjm [15]

Answer: y= 4/3x + 19/3

Step-by-step explanation: See the attachment below! Sorry, my handwriting is bad on computer, I've also attached notes to this lesson for you!!!

6 0

3 years ago