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Furkat [3]
3 years ago
12

Is it ever possible that sin (A+B)=⁡ (A+B)= sin⁡ A+sin⁡ B?

Mathematics
1 answer:
Cloud [144]3 years ago
3 0

Answer:

  It will always be the case when A and B are opposites

Step-by-step explanation:

sin(x) = -sin(-x) so ...

  sin(A -A) = (A -A) = sin(A) -sin(A) = 0

That is, the given expression is true when B=-A.

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Data consistent with summary quantities in the article "Effects of Fast-Food Consumption on Energy Intake and Diet Quality Among
Olegator [25]

Answer:

a) X[bar]₁=  1839.20 cal

b) X[bar]₂= 1779.07 cal

c) S₁= 386.35 cal

Step-by-step explanation:

Hello!

You have two independent samples,

Sample 1: n₁= 15 children that did not eat fast food.

Sample 2: n₂= 15 children that ate fast food.

The study variables are:

X₁: Calorie consumption of a kid that does not eat fast food in one day.

X₂: Calorie consumprion of a kid that eats fast food in one day.

a)

The point estimate of the population mean is the sample mean

X[bar]₁= (∑X₁/n₁) = (27588/15)= 1839.20 cal

b)

X[bar]₂= (∑X₂/n₂)= (26686/15)= 1779.07 cal

c)

To calculate the sample standard deiation, you have to calculate the sample variance first:

S₁²= \frac{1}{n_1-1}[∑X₁² - (( ∑X₁)²/n₁)]= \frac{1}{14} + [52829538 - (\frac{27588^{2} }{15}) = 149263.4571 cal²

S₁= 386.35 cal

I hope it helps!

7 0
3 years ago
What is the sguare root of 54
riadik2000 [5.3K]
Sq root (54) =
sq root (9*5) =
3 * sq root (5)

8 0
3 years ago
Im so lost, please help me asap
almond37 [142]

Answer:

it's so simple ....

x + 141 = 135

x = 135 - 141

x = -6

it means ur answer is a

8 0
2 years ago
Help ASAP Please. Working on this now. Look at picture for question and answer A, B, C​
Reika [66]

Answer:

look at step by step

Step-by-step explanation:

A) That is the number of bacteria that originally started in the culture

B) That is the rate at which the bacteria will reproduce

C) 1000 represents the number of bacteria at the beginning of the second culture.

The first study started with more bacteria, and will grow faster because of this

5 0
3 years ago
5r-2=6r+5 what does r equal​
Anuta_ua [19.1K]

Answer:

r=-7

Step-by-step explanation:

8 0
3 years ago
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