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3 years ago

Can someone please give me the answers to all three I will be marking u brilliant

Mathematics

2 answers:

Sedbober [7]3 years ago

8 0

Answer:

1. 18

2. 49.5

3. 48

Step-by-step explanation:

1. Since it is 3 dogs to 1 person we need to multiply 6 with 3, so we get 18 dogs!

2. Since 2 books equal 8.25, we just need to multiply 8.25 by 6, which we get 49.5 from!

Hope this helps and don't forget to follow!

aev [14]3 years ago

4 0

Answer:

#1 18

#2 $49.50

#3 48

Step-by-step explanation:

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What is the answer to -5m-18=52

Scilla [17]

The answer is

-5m-18=52
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-5=70
70:5=14
M=15

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3 years ago

A truck carries apples, grapes, and blackberries in the ratio of 4:3:4 if the apples weigh 160 pounds, how much the the truckloa

aleksandrvk [35]

Answer:

440 lbs

Step-by-step explanation:

4:3:4

If the apples (four) are 160 pounds, then one unit is 40 pounds. There are eleven such units, and 40 times 11 is 440.

Btw, you should ask your friends or family for help before coming here. This sounds like sixth or seventh grade math, and in those grades, I asked my friends for help, and then when I wanted conformation, then I went online

just a suggestion :)

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3 years ago

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aleksley [76]

Y= - x + 2 - 4
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3 years ago

Suppose cos(x)= -1/3, where π/2 ≤ x ≤ π. What is the value of tan(2x). EDGE

AVprozaik [17]

Answer:

Step-by-step explanation:

We are given that:

$\displaystyle \cos x = -\frac{1}{3}\text{ where } \pi /2 \leq x \leq \pi$

And we want to find the value of tan(2<em>x</em>).

Note that since <em>x</em> is between π/2 and π, it is in QII.

In QII, cosine and tangent are negative and only sine is positive.

We can rewrite our expression as:

$\displaystyle \tan(2x)=\frac{\sin(2x)}{\cos(2x)}$

Using double angle identities:

$\displaystyle \tan(2x)=\frac{2\sin x\cos x}{\cos^2 x-\sin^2 x}$

Since cosine relates the ratio of the adjacent side to the hypotenuse and we are given that cos(<em>x</em>) = -1/3, this means that our adjacent side is one and our hypotenuse is three (we can ignore the negative). Using this information, find the opposite side:

$\displaystyle o=\sqrt{3^2-1^2}=\sqrt{8}=2\sqrt{2}$

So, our adjacent side is 1, our opposite side is 2√2, and our hypotenuse is 3.

From the above information, substitute in appropriate values. And since <em>x</em> is in QII, cosine and tangent will be negative while sine will be positive. Hence: