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Arada [10]
3 years ago
7

the distance between two towns is 300 km two cars start simultaneously from this towns and move towards each other the speed of

one car is more than the other by 7 km per hour if the distance between the cars after 2 hours is 34 kilometre find the speed of the cars​
Mathematics
1 answer:
elena55 [62]3 years ago
8 0

Answer: I think its 131.19, but not too sure.

Step-by-step explanation:

To find the speed, you would do distance/time, so I added 300 and 7. I got 307, then I divided 307 (distance) from 2.34 (time). I got 131.19

Do you want the speed of both cars? then the answer would be:

(300)- first car= 128.20

(307)- second car= 131.19 (if you need to round this answer, it would be 131.2)

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Jennie bought six boxes of pencils for four dollars. How many boxes of pencils can she buy for six dollars?
kap26 [50]

Answer:

9 boxes.

Step-by-step explanation:

6 boxes cost 4 dollars

Therefore  1 box costs 4/6 = 2/3 dollar.

So  for 6 dollars  you can buy 6 / 2/3

= 6*3/2

= 9 boxes.

3 0
3 years ago
10. A bag contains 4 red balls, 6 green balls and some white balls. If the probability of not drawing a white ball in one draw b
klasskru [66]

Answer:

No of white balls = 5

Step-by-step explanation:

Given that,

Total no of red balls = 4

Total no of green balls = 6

The probability of not drawing a white ball in one draw be, P=\dfrac{2}{3}

We need to find the number of white balls. Let there are x balls.

The probability of drawing a white ball = 1 - the probability of not drawing a white ball

= 1 -2/3

= 1/3

Using the formula for solving probability of having a white ball.

P=\dfrac{\text{favorable outcome}}{\text{total no of outcomes}}\\\\\dfrac{1}{3}=\dfrac{x}{4+6+x}\\\\\dfrac{1}{3}=\dfrac{x}{10+x}\\\\10+x=3x\\\\10=2x\\\\x=5

Hence, there are 5 white balls.

3 0
3 years ago
Which is not true about cells? Question 4 options: They are in all living things Every type of cell performs the same function T
densk [106]

The third one 'every type performs the same function' is not true.

Skin cells operate differently compared to brain cells, plants cells and animal cells are hugely different, etc. Cells are specialised to achieve a certain purpose and function in living things.

7 0
4 years ago
Read 2 more answers
I need help figuring this out step by step
Arlecino [84]

Answer:

X-intercepts: (2,0) and (4,0)

Vertex: (3,-1)

Step-by-step explanation:

1) First, let's find the x-intercepts. The x-intercepts are the points at which the graph intersects the x-axis. Look at the x-axis. The x-axis is crossed at two points, (2,0) and (4,0). Therefore, those are the x-intercepts.

2) Now, let's find the vertex. For parabolas, the vertex can either be the lowest point of the graph (the minimum) or the highest point on the graph (the maximum). So, seeing how the graph goes up until infinity, find the lowest point the graph hits. Reading the graph, it would be (3,-1).

7 0
3 years ago
A glassblower decides to make an hourglass that will hold about 47 in^3 in each cone. If the radius of each cone is 3 in., what
Anastaziya [24]
Start with volume of cone equation
V = (pi)*r^2*(h/3)

Known values
V = 47 in^3 and r = 3 in

Solve for h
h = 3*(V/((pi)*r^2))
h = 4.99 in

Since this is the height for only one cone it would need to be doubled since two (2) cones make an hourglass.

Therefore total height would be approximately 9.98 inches. Suggest to make it 10.0 inches due to some transitional length were the cones come together in the middle
3 0
3 years ago
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