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olasank [31]
3 years ago
14

I need help with this please

Mathematics
2 answers:
lesantik [10]3 years ago
4 0
2 rational numbers are C. 2.777 and D. -7/3

a rational number<span> is any </span>number<span> that can be expressed as the quotient or fraction p/q of two integers
</span>
as you know 0.7777 (7 repeat) = 7/9
so 2.777(7 repeat) = 2 7/9
pychu [463]3 years ago
4 0
A rational number is any number that can be expressed as the quotient or fraction of two integers. so i think all of them are rational numbers except B.

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There are 24 girls, there are 2/3 of the girls on Monday 1/4 girls on Tuesday, and 1/6 girls on Wednesday. How many more girls a
marshall27 [118]

Answer:

10

Step-by-step explanation:

24/3 = 8

8*2= 16

24/4 = 6

16-6=10

5 0
3 years ago
What scale factor was applied to the first rectangle to get the resulting image?
Valentin [98]

Answer:

Divided by 5.

Step-by-step explanation:

It is five times smaller than the original picture.

3 0
3 years ago
Verify the identity:<br> tan(x+pi/2)=-cotx<br><br> please!!
olya-2409 [2.1K]
First we use sin(a+b)= sinacosb+sinbcosa
and cos(a+b)=cosa cosb -sinasinb

tan(x+pi/2)= sin(x+pi/2) / cos(x+pi/2)
and sin(x+pi/2) = sinxcospi/2 + sinpi/2cosx =cosx, 
<span>cos(x+pi/2) = cosxcospi/2- sinxsinpi/2= - sinx, 
</span> because <span>cospi/2 =0,  </span>and <span>sinpi/2=1

</span><span>=tan(x+pi/2)= sin(x+pi/2) / cos(x+pi/2)= cosx / -sinx = -1/tanx = -cotx
</span>from where <span>tan(x+pi/2)=-cotx</span> 
5 0
3 years ago
Please help me.
mart [117]

Since they are similar both dimensions would have the same ratio. The ratio of 5 and 15 is 3. 15 is 3 times larger than 5, so the unknown dimension is 3 times larger than the known dimension.

3 x 10 = 30

The unknown dimension is 30

5 0
3 years ago
A cube has a side length of 12 m what is the volume of the cube?
AfilCa [17]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ volume = length x width x height

volume = 12 x 12 x 12

volume = 1728

The volume is 1728 cm^3

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

7 0
3 years ago
Read 2 more answers
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