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erastovalidia [21]
2 years ago
5

Which is a parallelogram but not a rectangle?

Mathematics
1 answer:
Alinara [238K]2 years ago
4 0
I’m pretty sure that your answer is the last one
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The invitations to a holiday party cost a total of $31.50 if each invitation cost $0.75 cents how many invitations were sent out
babunello [35]

Answer:

42

Step-by-step explanation:

divide the total by the cost of each invite

6 0
2 years ago
What value do you square to get 9?
Dominik [7]

Answer:

3 or -3

Step-by-step explanation:

What number multiplied by itself will give you 9

1*1 =1

2*2 =4

3*3 =9

Also note that negative times negative will be positive so

-1*-1=1

That means -3*-3 = 9

4 0
2 years ago
Read 2 more answers
The Fifth Grade classes are going on a field trip. Mrs. Lafont fills an ice chest with drinks. The ice chest holds 122 cubic inc
forsale [732]
122+118=240 because you add it.
5 0
3 years ago
Read 2 more answers
I NEED HELP PLEASE THANK YOU ​
Sauron [17]

Answer:

d

Step-by-step explanation:

if you tried to do the d you would end up with this

/_)

7 0
2 years ago
I need help with this question please.
vredina [299]

Answer:

tan(2x)=-24/7

Step-by-step explanation:

Since tan(x)=sin(x)/cos(x)

We are going to need sin(x) any time, so lets find it right away.

To do this, remember that. sin(x)^2 + cos(x)^2=1

so. sin(x)= \sqrt{1 - (cos(x)^{2} )}=\sqrt{1-(-4/5)^{2} }

This leads to.

\sqrt{\frac{25-16}{25} } =\sqrt{\frac{9}{25} }=+/- 3-5

We have obtained two solutions, -3/5 and 3/5.

We need to pick one, since not all of them are correct for our scenario, in this case, we've been told that x belongs to the range [180, 270], in this range, sin(x)<0.

So in our previous solution, we have that sin(x)= -3/5

Now, to find tang(2x), we need to apply the definition

Tang(2x)=sin(2x)/cos(2x).

Lets remember that

sin(2x)=2*sin(x)*cos(x)

cos(2x)=cos(x)^2 - sin(x)^2.

Lets evaluate our given result.

sin(2x)=2*(-3/5)*(4/5)=-24/25

cos(2x)=(-4/5)^2 - (3/5)^2=7/25

Hence

tan(2x)= -(24/25) / (7/25)=-24/7

5 0
3 years ago
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