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3 years ago

At midnight the temperature is -6 degrees C. At midday the temperature is 9 degrees C. By how much did the temperature rise? *

Mathematics

1 answer:

Nastasia [14]3 years ago

6 0

Answer:

it rises 15 degrees

Step-by-step explanation:

sorry if it is wrong but I am sure it us 15

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-8x^2-3x+5+2x^2+7x-5

denis-greek [22]

-6x^2+4x

my reasoning:
eliminate the opposites (5 & -5)
collect the like terms (-8x^2 & + 2x^2)
collect the like terms again (-3x &+7x)

8 0

3 years ago

Which set or sets does -20 belong which means whole number integer or rational number

VladimirAG [237]

Answer:

A whole number

Step-by-step explanation:

because a whole number is a number with no fractions or decimals . it is basically just an integer

3 0

3 years ago

Read 2 more answers

Surface Area of Cylinder=2πrh+2πr2

Alex

Find the surface area when r is 8 inches and h is 8 inches.

$\qquad$ A. 160π in²

$\qquad$ B. 154π in²

$\qquad$ C. 288π in²

$\qquad$ D. 256π in² ☑

We are given –

$\qquad$ ⇢Radius of cylinder , r = 8 inches

$\qquad$ ⇢ Height of cylinder, h = 8 inches.

We are asked to find surface area of the given cylinder.

Formula to find the surface cylinder given by –

$\bf \star \pink{ Surface\: Area_{(Cylinder)} = 2\pi rh +2\pi r^2 }$

Now, Substitute given values –

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2\pi rh +2\pi r^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2 \pi \times 8 \times 8 + 2\pi \times 8^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2 \pi \times 8^2 + 2\pi \times 8^2$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 2\pi \times 64 +2\pi \times 64$

$\sf \twoheadrightarrow Surface\: Area_{(Cylinder)} =128 \pi + 128\pi$

$\purple{\bf \twoheadrightarrow Surface\: Area_{(Cylinder)} = 256\pi \: in^2 }$

Henceforth,Option D is the correct answer.

8 0

2 years ago

Draw a model to represent the ratio 1 to 3. Describe how to use the model to find an equivalent ratio. Please help I'm really st

Gnesinka [82]

Answer: See below

Step-by-step explanation:

Make a table with first set of numbers as 1,3. Multiply both the numbers of this set sequentially by natural numbers to get the following table

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

3 6 9 12 15 18 21 24 27 30......

We see that in each set of numbers the 2nd number is 3 times the first number.

If we plot these sets of numbers on a graph paper, we get a model depicting all the points which satisfy this ration requirement.

3 0

4 years ago

What is the slope of the line in the graph?<br> 4-<br> 4 5<br><br> there is a picture ^

Ivan

Answer: x+1 is the equation and the slope will be 1/1

Step-by-step explanation:

5 0

3 years ago