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Simora [160]
3 years ago
15

Using significant digits, determine the product of 3.865 and 2.4.

Mathematics
1 answer:
s2008m [1.1K]3 years ago
7 0

Answer:

3.865 - has 4 significant digits.

2.4 -  has 2 significant digits.

Product = 3.865 × 2.4 = 9.276

So,

9.276 has 4 significant digits.

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A chemist recorded the change in temperature of a cooling liquid as −25.5°f over a 1.5 minute period. the temperature fell at a
sineoko [7]
Rate of change <span>a </span>rate<span> that describes how one quantity </span>changes<span> in relation to another quantity. It is also called the slope. To calculate the rate of change in temperature, we use the expression:

Rate of change = change in temperature / change in time
</span>Rate of change = -25.5 / 1.5
Rate of change = -17 °C / min

The negative sign signifies a drop in temperature per minute.
4 0
3 years ago
Read 2 more answers
A volume a cylinder: V = 1\3 pi [tex] x^{2} h solve for h PLZ HELP!!!
DedPeter [7]

Volume   =   π • r² • height

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Source www.1728.com/diamform.htm


7 0
3 years ago
Find all solutions of the equation in the interval [0, 2pi).
mina [271]

Answer:

x = 0 , π

Step-by-step explanation:

-4 \sin x = 1 - cos^2 x

  • Rewrite it by using the identity \sin^2x + \cos^2x = 1

=> -4\sin x = \sin^2x

  • Add 4sin x to both the sides.

=> -4\sin x + 4\sin x = sin^2x + 4\sin x

=> \sin^2x + 4\sin x = 0

  • Take sin x common from the expression in L.H.S.

=> \sin x(\sin x + 4)=0

Here , we can get two more equations to find x.

1) \sin x(\sin x + 4)=0

  • Divide both the sides by sin x

=> \frac{\sin x(\sin x + 4)}{\sin x} = \frac{0}{\sin x}

=> \sin x + 4 = 0

  • Substract 4 from both the sides.

=> \sin x + 4 - 4 = 0 - 4

=> \sin x = -4

=> x = No \; Solution

2) \sin x(\sin x + 4)=0

  • Divide both the sides by (sin x + 4)

=> \frac{\sin x(\sin x + 4)}{\sin x + 4} = \frac{0}{\sin x + 4}

=> \sin x =  0

=> x = 0 \; , \pi over interval [0 , 2π).

5 0
3 years ago
JK has endpoints at -12 and 4. What is the coordinate of its midpoint
iris [78.8K]

Answer:

- 4

Step-by-step explanation:

Midpoint of JK

=  \frac{ - 12 + 4}{2}  \\  \\  =  \frac{ - 8}{2}  \\  \\  =  - 4

7 0
3 years ago
10 points
Marianna [84]
I think the hint gave you the answer. Solve for y.

So 2y = 5.76x
Divide both sides by 2.
y = 2.88x

Therefore your slope is 2.88
6 0
3 years ago
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