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Irina18 [472]
1 year ago
7

you have 3 times as many pencils as your friend , if you have 21 pencils how many does your friend have ?

Mathematics
2 answers:
Fofino [41]1 year ago
8 0

Answer:

7

Step-by-step explanation:

zysi [14]1 year ago
8 0
7.
this is because 21 divided by 3 is 7.
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Can someone help me with this. I tried to total all them up with 180 but none of the answers i got match the ones from the riddl
Vladimir79 [104]

Answer:

9. x=102

10. x=56

11. x=104

12. x=138

Step-by-step explanation:

9.  In this problem, they are alternate exterior angles, meaning they are the same value.  x=102

10.  x is a corresponding angle, meaning they are the same. x=56

11. There are consecutive interior angles. The sum of these two angles is 180. to find x, subtract 76 from 180.  180-76 = 104  x = 104

12. These two angles are verticle angles, meaning they are equivalent. x = 138

6 0
3 years ago
Which function is equivalent to the inverse of y=sec(x)
kipiarov [429]
From the identity:

sec(x)= \frac{1}{cos(x)}


f(x)=sec(x)= \frac{1}{cos(x)}

the inverse of f is g such that f(g(x))=x,

we must find g(x), such that \frac{1}{cos[g(x)]}=x

thus, cos[g(x)]= \frac{1}{x}

g(x)=cos^{-1} (\frac{1}{x})


Answer: b. g(x)=cos^-1(1/x)   
6 0
3 years ago
What is the geometric mean between 9/16 and 25/36
sergiy2304 [10]

Answer:

5/8

Step-by-step explanation:

Geometric mean is found by multiplying the n number of values and then taking the n-root.

To do this with these numbers, sqrt((9/16)*(25/36)) = (3/4)(5/6) = (1/4)(5/2)= 5/8

I hope this helps! :)

6 0
3 years ago
51. q(x) = 2 * (x - 1) ^ 2 + 5 , what is the value of q(- 3) ?
Sloan [31]

Answer:

26.69

Step-by-step explanation:

8 0
3 years ago
Please help with this postulate! :)
atroni [7]

Answer:

  • C. ASA postulate

Step-by-step explanation:

<u>We observe two angles and the included side of ABC are congruent to two angles and the included side of DBE:</u>

  • ∠A ≅ ∠D
  • ∠C ≅ ∠ E
  • AC ≅ DE

This is called ASA

7 0
2 years ago
Read 2 more answers
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