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gizmo_the_mogwai [7]
3 years ago
5

Can you do my ixls for me its 7th grade math and the ixl I want you to do is v3

Mathematics
1 answer:
klemol [59]3 years ago
4 0
Send problems not a questions
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7.
Firdavs [7]

Step-by-step explanation:

7equitacion h< y ⚽ de los siguientes dominios

5 0
3 years ago
What is 2.5x10^3 please someone help me
AVprozaik [17]

Answer:

2500

Step-by-step explanation:

2.5*10^3\ can\ simply\ be\ expanded\ as:\\2.5*10*10*10\\=25*10*10\\=250*10\\=2500

5 0
3 years ago
Read 2 more answers
HELP!!
Alekssandra [29.7K]

Answer: a) 25x+30y=221.25\\5x+45y=191.25

b) Cost of a macadamia nut chip cookie is $33.93 and the cost of triple chocolate cookie. is $3.77

c) Elimination method because it enables us to eliminate one of the variables.


Step-by-step explanation:

Let x be the cost of macadamia nut chip cookie and y be the cost of triple chocolate cookie.

Then according to the question we have the following equations:-

25x+30y=221.25..................(1)\\5x+45y=191.25.......................(2)

Multiplying 5 on both sides of the equation (2), we get

25x+225y=956.25...............(3)

By using elimination method, subtract equation (1) from (3) we get

195y=735\\\Rightarrow\ y=3.77

Substitute the value of y in (2), we get

5x+45(3.77)=191.25\\\Rightarrow\ 5x=191.25-169.65\\\Rightarrow\ x=33.93





8 0
4 years ago
Read 2 more answers
Please help me with this question
wlad13 [49]

Answer:

-3

Step-by-step explanation:

Remember the following:

cos(x)=cos(x/2 + x/2) = cos(x/2)*cos(x/2) -sin(x/2)*sin(x/2)

cos(x)=cos2(x/2) - sin2(x/2)

We also know that sin2(a)+cos2(a)=1,

so sin2(x/2)=1 - cos2(x/2). obtained from previous step.

So, our first expression can be written as:

cos(x)=cos2(x/2)-1+cos2(x/2)

Where we obtain that: cos(x/2)= sqrt( 1+ cos(x))/ sqrt(2)

If we again use sin2(a)+cos2(a)=1, we will obtain the following relation:

sin(x/2)= sqrt(1-cos(x))/sqrt(2)

Next Tang(x/2)= sin(x/2) / cos(x/2)= sqrt(1-cos(x))/sqrt(1+cos(x))=

SQRT(9/1)=3

In the given range, cos(x), hence tan(x/2) is also negative

6 0
3 years ago
PLS HELP ME WITH THIS TY!
Inessa05 [86]

Answer:

B.) 450

Step-by-step explanation:

I hope I could help

8 0
4 years ago
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