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ExtremeBDS [4]
2 years ago
9

B -2(b - 2) simplified

Mathematics
1 answer:
BlackZzzverrR [31]2 years ago
5 0

Answer:

b -2(b - 2)

b-2b+4

-b+4

4-b

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Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous plan
vladimir1956 [14]

Answer:

its 450 k

Step-by-step explanation:

It is given that the temperature of the gaseous planet is linearly related with height of the atmosphere. we can write this in the mathematical equation:

y = m x +c

where y is the temperature values, x is height, m is the slope and c is the y-intercept. we have been given two sets of value in the image, using which we can find the value of slope in y-intercept.

at x = 18.40 km, y = 147.54 K

⇒147.54 = 18.40 m + c      

⇒c = 147.54 - 18.40 m  ..(1)

at x =78.11 km, y = 567.00 K

⇒567.00 =78.11 m + c       ..(2)

Put equation 1 in 2 and solve:

⇒567.00 =78.11 m + 147.54 - 18.40 m

⇒419.46 = 59.71 m

⇒ m =419.46 ÷59.71 = 7.025 K/km

c = 147.54 - 18.40 × 7.025 = 18.28 K

At height, x = 61.5 km the approximate temperature is :

y = 7.025 K/km ×  61.5 km + 18.28 K = 450.3 K

Thus, the approximate temperature at altitude 61.5 km is 450 K.

7 0
3 years ago
A function rule takes an input, and converts it into an output, y, by decreasing twice the input by 4. what is the output for th
Harman [31]

Answer:

  • when the input = 4
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Step-by-step explanation:

It is stated that a function rule takes an input, and converts it into an output, y, by decreasing twice the input by 4.

Let 'x' be the number

Decreasing twice the number 'x' by 4 = 2x-4

Now,

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As the output will decrease twice the input (x=5) by 4

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Mashutka [201]

Answer:

I'm pretty sure it's the last one.

Step-by-step explanation:

3 0
2 years ago
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frozen [14]
He ate 2/3 of the pizza in half an hour so to eat 1/3 of the pizza it to 15 minutes so the answer is 45 minutes
7 0
3 years ago
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Answer:

Around 25

Step-by-step explanation:

452 candies/18 children

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4 0
2 years ago
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