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Gnom [1K]
3 years ago
7

Please help me with this

Mathematics
1 answer:
77julia77 [94]3 years ago
5 0
Just have to use cosine rule!!! :)

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The temperature outside is currently 10°F. It will fall at a constant rate of 3°F per hour. Which temperature will it be in 4 ho
Triss [41]

Answer:

T4 = -2°F

Step-by-step explanation:

Given the following data;

Current temperature = 10°F

Constant, K = 3°F

Time, t = 4 hours

In four (4) hours, we have;

T = kt

Substituting into the equation, we have;

T = 3 * 4

T = 12°F

T4 = current temp - new temp

T4 = 10°F - 12°F

T4 = -2°F

Therefore, the temperature it will be in 4 hours is - 2°F.

6 0
3 years ago
What is the value of 5a plus 2 (a plus b) when a equal 4 and b equal 2
katovenus [111]

Answer:

32

Step-by-step explanation:

5a +2(a+b)

a=4, b=2

5(4) + 2(4+2)

=> 20 + 12= 32

5 0
4 years ago
Read 2 more answers
Jacob buys 5 packs of muffins. He uses a coupon and saves $1 off the total.
jolli1 [7]
The answer is D. 5m-1
3 0
2 years ago
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A cone-shaped water cup has a height of 3.3 inches and a diameter of 2.7 inches. One fluid ounce is equivalent to 1.8 cubic inch
DaniilM [7]

Answer:

3.5 fluid ounces

Step-by-step explanation:

In this question, we are asked to calculate the capacity in fluid ounce of a cone-shaped cup.

To solve this, we need to calculate the volume of the cup.

Mathematically, the volume of a cone =

1/3 * π * r^2 * h

Where r = d/2 = 2.7/2 = 1.35 inches

h = 3.3 inches

By substituting this, we have

V = 1/3 * 3.14 * 1.35^2 * 3.3 = 6.3 cubic inch

Now we proceed to calculate the capacity

From the question, we are told that ;

1 fluid ounce = 1.8 cubic inch

This means

x fluid ounce = 6.3 cubic inch

x = 6.3/1.8

x = 3.5 fluid ounces

8 0
3 years ago
Read 2 more answers
What types of parts are necessary for a complex number?
Otrada [13]

Answer:

A complex number is of type

a+bi

where a is the real parts and b is the imaginary part.

Step-by-step explanation:

A complex number is of type

a+bi

where a is the real parts and b is the imaginary part.

i is called imaginary number because no real number satisfies this equation

An example of complex number can be: 7+8i or 23+9i etc

4 0
3 years ago
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