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Anarel [89]
3 years ago
6

Find the Z score of 78 with a mean of 75 and standard deviation of 4

Mathematics
1 answer:
kompoz [17]3 years ago
6 0
Meld,elellelee,lee,”d,d
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PLS HELP DUE VERY SOON
Ganezh [65]

Answer:

a. IQR = 2.25

b. 40%

(I'm not sure about B.)

Step-by-step explanation:

a.=Q3 - Q1

=4.7 - 2.2

=2.5

b. =2/5 × 100/1

=40%

3 0
3 years ago
HELP!:<br><br> x^2 + 6x + 9 = ?<br><br> This is a factorizing question!! I need help, quickly!
julia-pushkina [17]

Answer:

nasa pic yung answer

Step-by-step explanation:

hope its help

correct me if im wrong

7 0
2 years ago
Read 2 more answers
(y-3)(y+10) find the product please​
allochka39001 [22]

Answer:

y^2 +7y-30

Step-by-step explanation:

Step 1:  Use FOIL

y·y = y^2

y· 10= 10y

-3·y= -3y

-3·10= -30

Step 2: <em>combine like terms</em>

y^2+ 10y-3y-30

7^2+ 7y-30

and thats all :)

hope this helped

4 0
3 years ago
Read 2 more answers
Please take a look at the picture. Please write your answer with an explanation.
Ahat [919]

Step-by-step explanation:

what answer is needed ? the result of the calculation ?

I assume this is the case.

remember that regarding the sequence of operations brackets are first, then exponents, then "dot" operations (× and ÷), and only at the very least come the "dash" operations (+ and -).

and that a combination of - + or + - results in -.

14 + 16 ÷ 2³ - (12 + 3²) ÷ 7 + 2 × (-5) =

14 + 16 ÷ 2³ - (12 + 9) ÷ 7 - 2 × 5 =

14 + 16 ÷ 2³ - 21 ÷ 7 - 2 × 5 =

14 + 16 ÷ 8 - 21 ÷ 7 - 2 × 5 =

14 + 2 - 3 - 10 = 3

7 0
2 years ago
Mary ran 2 miles in about 23 minutes. If she continued at the same pace, how long will it take her to run 10 miles?
ZanzabumX [31]

Answer:115 minutes

Step-by-step explanation:

Set you problem 2/23 = 10/x

X represents the number of minutes you are trying to figure out. Cross multiply to get 2x=230. Decide both sides by 2 to get x=115

8 0
4 years ago
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