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3 years ago

9

I think of a number multiply it by 2, subtract 5 and multiply the result by 2

1 answer:

zalisa [80]3 years ago

7 0

Call our original number n. Then here's what we did in an equation:
$(n*2-5)*2=2$

We can solve this for n:
$n*2-5=1$
$n*2=6$
$n=3$

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Please answer quickly! A recipe asks for 1/3 cup of nuts. How many nuts are needed to make 1/4 of the recipe?

anastassius [24]

Answer: 1/12 of a cup

To get this answer, you multiply 1/4 by 1/3
Multiply straight across
(1/4)*(1/3) = (1*1)/(4*3) = 1/12

6 0

3 years ago

5.) There are 40

Marina86 [1]

50 dogs and 10 cats
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3 years ago

Factor the following<br> n^2 + 6n

Veronika [31]

Answer:

n(n + 6)

Step-by-step explanation:

n² + 6n = n(n + 6)

4 0

3 years ago

Read 2 more answers

Law of sines: 2.2 units 2.4 units 3.0 units 3.3 units

Arada [10]

Answer:

$RS=2.4\ units$

Step-by-step explanation:

<em>The complete question is </em>

What is the length of line segment RS? Use the law of sines to find the answer. Round to the nearest tenth.

see the attached figure to better understand the problem

step 1

Find the measure of angle S

Applying the law of sines

$\frac{QS}{sin(R)}=\frac{QR}{sin(S)}$

substitute the given values

$\frac{3.1}{sin(80^o)}=\frac{2.4}{sin(S)}$

Solve for sin(S)

$sin(S)=\frac{sin(80^o)}{3.1}(2.4)$

$S=sin^{-1}[sin(80^o)}{3.1}(2.4)]$

$S=49.68^o$

step 2

Find the measure of angle Q

Remember that the sum of the interior angles in any triangle mut b equal to 180 degrees

so

$m\angle Q+m\angle R+m\angle S=180^o$

substitute the given values

$m\angle Q+80^o+49.68^o=180^o$

$m\angle Q+129.68^o=180^o$

$m\angle Q=180^o-129.68^o$

$m\angle Q=50.32^o$

step 3

Find the length of segment RS

Applying the law of sines

$\frac{QS}{sin(R)}=\frac{RS}{sin(Q)}$

substitute the given values

$\frac{3.1}{sin(80^o)}=\frac{RS}{sin(50.32^o)}$

$RS=\frac{3.1}{sin(80^o)}{sin(50.32^o)}$

$RS=2.4\ units$

3 0

3 years ago

Where should the x be????

Eduardwww [97]

There should be an X over 9.6, 0, √16, and 2.45.

9.6 = Integer
0 = Whole Number
√16 (or 4) = Counting Numbers
2.45 = Integer

7 0

3 years ago