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Oksi-84 [34.3K]
3 years ago
13

,1.) using the following triangle, what is the cosine of angle B

Mathematics
1 answer:
jeka943 years ago
3 0
Cosine of B equals a divided by c
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Hi! this question applies to #43
Anika [276]

When an absolute value is changed in the horizontal,  <em>the units in change are inside the "bars"</em>, and are as follows: <em>left = positive, right = negative</em>.

Therefore, the equation is y = | x - 6.5 |.

4 0
4 years ago
A cup of coffee at 95 degrees Celsius is placed in a room at 25 degrees Celsius. Suppose that the coffee cools at a rate of 2 de
Roman55 [17]

Answer:

See Explanation

Step-by-step explanation:

For an object at temperature T and supposing that the ambient temperature is Ta then we can write the differential equation that typifies the Newton law of cooling as follows;

dT/dt=-k(T-Tₐ)

So

dT/dt = 2 degrees Celsius per minute

T = 70 degrees Celsius

Ta = 25 degrees Celsius

2 = -k(70 - 25)

-k = 2/(70 - 25)

k = - 0.044

Hence we can write;

dT/dt=-(- 0.044)(95-25)

dT/dt= 3 degrees Celsius per minute

4 0
3 years ago
A circle has a mass of 3 grams and a triangle has a mass of 5 grams write an equation for the hanger
Neko [114]

Answer:

The fraction can not be reduced, but it can be converted to decimal form.

Exact Form:

3/5

Decimal Form: 0.6

Step-by-step explanation:

8 0
3 years ago
When the expression x^2+2x-8 is factored the two roots will equal
Vilka [71]

x^2+2x-8

(x+4) (x-2)

x=-4, x=2

5 0
3 years ago
if you multiply the number of cars in the parking lot by 4 there would be 32 cars how many cars are in the lot​?
olchik [2.2K]
If you do the steps backwards 32/4 is 8
6 0
3 years ago
Read 2 more answers
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