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Kay [80]
3 years ago
5

The average height of a class of 18 students is 105 cm After arrival of 7 new students the

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

Total number of students = 18 + 7 = 25

Average height of the 25 students = 105 - 5 = 100 cm


Sum of height of all students = 100 x 25 = 2500cm


Answer: 2500cm

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P^2 - 17p + 72 factor the trinomial. enter smaller number first ? answer (p+?)(p+?)
klio [65]

Answer:

(p - 8)(p - 9)

Step-by-step explanation:

We need  2 numbers whose product is + 72 and whose sum = -17.

They are -8 and -9


3 0
3 years ago
A circle has center at –6 + 2i and a point on the circle at 4 + 26i. Which of the following points is also on the circle?
Alenkasestr [34]
Answer:
–16 – 22i
Step-by-step explanation:
The radius of the circle = 4 + 26i - (-6 + 2i)
= 10 + 24i.
The radius will be the absolute values of this |10 + 24i|.

If a point is on the circle then it's distance from the centre must be 10+ 24i.
-19 + 15i - (-6 + 2i) = -13 - 13i , so this is not on the circle.
-16 - 22i - (-6 + 2i) = -10 - 24i = |10 + 24i| , so this is on the circle.
5 + 16i - (-6 + 2i) = 11 + 14i , so this is not on the circle.
20 - 24i - (-6 + 2i) = 26 - 26i. so this is not on the circle.
3 0
1 year ago
Someone smart pls help
OleMash [197]

Answer:

5

Step-by-step explanation:

-2^2=-4

3^2=9

add

-4+9=5

5 0
3 years ago
Please help me!
Zigmanuir [339]

Answer:

s = 14

Step-by-step explanation:

Step 1: Combine like terms.

  • (\frac{2}{3}s + \frac{5}{6}s) = 21
  • (\frac{4}{6}s + \frac{5}{6}s) = 21
  • \frac{9}{6}s = 21
  • \frac{3}{2}s=21

Step 2: Multiply both sides by 2/3.

  • \frac{3}{2}s * \frac{2}{3} = 21 * \frac{2}{3}
  • s = \frac{42}{3}
  • s = 14
8 0
2 years ago
Hello im in 11th grade, im currently struggling in two classes: chemistry and spanish. Im already in the second semester, and ju
Katarina [22]
For chemistry you would need to get an 84.
For Spanish you would need to get an 82.
Best of luck
7 0
3 years ago
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