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2 years ago

PLEASE HELP ASAP, ILL GIVE BRAINLIEST

Mathematics

1 answer:

frozen [14]2 years ago

3 0

Answer:

false, false, true, true, true

Step-by-step explanation:

Let's check each of the answers by plugging them into the inequality.

-2 (false):

$9-3(-2)$ which is false.

-1 (false):

$9-3(-1)$ which is false.

0 (true):

$9-3(0)$ which is true.

1 (true):

$9-3(1)$ which is true.

2 (true):

$9-3(2)$ which is true.

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the mean height of the 30 children in a room is 76 cm james whose height is 107 cm went into the room what is the new mean of th

Snezhnost [94]

Answer:

The new mean is 77cm

Step-by-step explanation:

If the mean height of the 30 children in a room is 76 cm, then the sum of their ages is

$30 \times 76 = 2280cm$

If James with height 107cm joins them, then the total number of children now becomes 30+1=31 and the total height becomes: 2280cm+107cm=2387cm

The new mean now becomes:

$\bar x = \frac{2387}{31} = 77cm$

4 0

3 years ago

Determine if the statement is always, sometimes or never true. Equilateral triangles are isosceles triangles.

tia_tia [17]

Never .. isoscels is unequal. I'm pretty sure

7 0

3 years ago

Please help !! Thank you so much !

Alekssandra [29.7K]

Answer:

A, because m is less than 4.4 so 4.4, is gonna be greater

6 0

3 years ago

Read 2 more answers

For positive acute angles A and B, it is known that tan A = 35/12 and sin B = 20/29. Find the value of sin(A - B ) in the simple

almond37 [142]

Answer:

$\displaystyle \sin(A-B)=\frac{495}{1073}$

Step-by-step explanation:

We are given that:

$\displaystyle \tan(A)=\frac{35}{12}\text{ and } \sin(B)=\frac{20}{29}$

Where both A and B are positive acute angles.

And we want to find he value of sin(A-B).

Using the first ratio, we can conclude that the opposite side is 35 and the adjacent side is 12.

Then by the Pythagorean Theorem, the hypotenuse is:

$h = \sqrt{35^2 + 12^2} =37$

Using the second ratio, we can likewise conclude that the opposite side is 20 and the hypotenuse is 29.

Then by the Pythagorean Theorem, the adjacent is:

$a=\sqrt{29^2-20^2}=21$

Therefore, we can conclude that:

So, for A, the adjacent is 12, opposite is 35, and the hypotenuse is 37.

For B, the adjacent is 21, opposite is 20, and the hypotenuse is 29.

We can rewrite sin(A-B) as:

$\sin(A-B)=\sin(A)\cos(B)-\cos(A)\sin(B)$

Using the above conclusions, this yields: (Note that since A and B are positive acute angles, all resulting ratios will be positive.)

$\displaystyle \sin(A-B)=\Big(\frac{35}{37}\Big)\Big(\frac{21}{29}\Big)-\Big(\frac{12}{37}\Big)\Big(\frac{20}{29}\Big)$

Evaluate:

$\displaystyle \sin(A-B)=\frac{735-240}{1073}=\frac{495}{1073}$

6 0

3 years ago

HELP!! i will give brainliest!!

AfilCa [17]

22 kilometers :) hope that helped

3 0

3 years ago