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jeka57 [31]
3 years ago
14

ASAP PLEASE HELP!!!

Mathematics
1 answer:
Mariulka [41]3 years ago
8 0

Z score = (x -mean) /  standard deviation.

For this problem X = 50 cm.

Z-score = (50 - 49.2) / 1.8

Z score = 0.8 / 1.8

Z score = 0.44

Look up 0.44 on a z-score table.

0.44 = 0.6700

0.67 x 100 = 67% will be 50 cm or longer.

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2.please I need help
Anarel [89]

9514 1404 393

Answer:

  1. 48°
  2. 60°
  3. 72°

Step-by-step explanation:

The sum of ratio units is 4+5+6 = 15, so each unit stands for 180°/15 = 12°. Multiplying the ratio units by 12° gives the angle values:

  4×12° : 5×12° : 6×12° = 48° : 60° : 72°

Angles 1 to 3 are 48°, 60°, 72°, respectively.

7 0
3 years ago
What is T in -5t-2(5t+10)=100​
Alina [70]

Answer:

t=-8

Step-by-step explanation:

-5t-2(5t+10t)=100

-2 x 5t=-10t

-2 x 10 = -20

-5t-10t-20=100

combine terms and add 20

-15t=120

divide by -15

t=-8

7 0
3 years ago
Graph ​ y−5=−2/3(x+9)​.<br> plot two different points. please show work i am very lost. thank you
Sidana [21]
Y -:5 = 2/3x + 6 because 6 is 2/3 of 9
add 5 to both sides
y - 5 +:5 = 2/3x + 6 + 5
y = 2/3x + 11
the y intersept is 11 or (0 , 11) when x is 0
when x is 3
y = 2/3 (3) + 11 or 2 + 11 = 13
so a 2nd point could be (3 , 13)
4 0
3 years ago
Find the area of the figure below.<br><br> Please help me with this I don’t understand it!
Olegator [25]

Answer:

ans :240 cm²

Step-by-step explanation:

see the pic

....ik its messy but hope u understand

and I hope the ans is correct

8 0
2 years ago
2.35 ÷ (-1.5) (Round to the tenth)
Sidana [21]
-1.6 is your answer :))))
5 0
3 years ago
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