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Svetlanka [38]
3 years ago
15

The graph shows the increase of the temperature over time in an oven what is the change in the y value and x value on the graph

Mathematics
2 answers:
Hatshy [7]3 years ago
6 0

Let

x-------> the time in minutes

y-------> the temperature in Fahrenheit  degrees

A(2,150)\\B(3,190)

we know that

<u>the change in the y-values between two points is equal to</u>

(y2-y1)

Substitute the y-values of the point A and B in the formula

y2=190\\y1=150

(190-150)=40

<u>the change in the x-values between two points is equal to</u>

(x2-x1)

Substitute the x-values of the point A and B in the formula

x2=3\\x1=2

(3-2)=1

therefore

<u>the answer is</u>

The change in the y-value is 40 and the change in the x-value is 1

hjlf3 years ago
3 0
It is the first answer
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78 : 120 :: ? : 66<br>please give answer with explanation<br>​
yawa3891 [41]

Step-by-step explanation:

<u>Method</u><u> </u><u>1</u><u>:</u>

Given that:

78 : 120 :: ? : 66

Here,

Product of extremes = 78 and 66

Product of means = 120 and ?

so,

(78*66) = (120 * ?)

⇛5148 = 120 * ?

⇛5148 = 120?

⇛120? = 5148

Shift the number 120 from LHS to RHS, changing it's sign.

⇛? = 5148/120

Therefore, (?) = 42.9

<u>Method</u><u> </u><u>2</u><u>:</u>

78 : 120 :: ? : 66

Convert each ratio into fraction.

⇛78/120 = ?/66

On applying cross multiplication then

since, (a/b) = (c/d) ⇛cd = ad

Where, a = 78, b = 120, c = ? and d = 66

Now,

⇛(120)? = (78)66

⇛120? = 5148

⇛(?) = 5148/120

Therefore, (?) = 42.9

<u>Ans</u><u>w</u><u>er:</u> Hence the value of (?) for the given problem is 42.9.

<u>Verification</u><u>:</u>

Check whether the value of (?) is true or false.

78 : 120 :: ? : 66

Substitute the value of (?).

⇛78:120 = 42.9:66

Product of extremes should be equal to product of means.

Product of extremes:- 78*66 = 5148

Product of means:- 120*42.9 = 5148

⇛5148 = 5148

LHS = RHS

Hence, verified.

4 0
2 years ago
Plz help me i did it but messed up some ware plz help . 5x5=4x5+9=
Lyrx [107]

Answer: 25=29

Step-by-step explanation:5x5=25

4x5+9=29

5 0
3 years ago
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A sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4. You want to c
Nikolay [14]

Answer:

21, 144, 12

Step-by-step explanation:

Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.

Let X be the distance in yard.

i.e. each entry of x is multiplied by 3.

New mean variance std devition would be

E(3x) = 3E(x) = 21

Var (3x) = 3^2 Var(x) = 9(16) =144

Std dev (3x) = \sqrt{144 } =12

Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9

4 0
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In an ice skating competition, the order in which competitors skate is determined by a drawing. If there are 10 skaters in the f
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Answer:

3628800

Step-by-step explanation:

If there are 10 skaters, it would go from 9, 8, 7, and so on...

So..

10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

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6 0
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The school play earned $11,271 in ticket sales. If the cost of each ticket was $13, how many tickets were sold?
mojhsa [17]

Answer:

867 tickets were sold because if you divide how much they earned by how much it cost you get 867

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