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NARA [144]
2 years ago
11

Help me, please! I'll give a brainlist point! :)

Mathematics
2 answers:
Allisa [31]2 years ago
7 0

Answer:

105

Step-by-step explanation:

Area of a trapezoid is given by the formula:

A = (a+b)÷2×h

(where h is the vertical height, and a and b are the parallel lines)

Substituting values given gives us:

A = (6+15)÷2×10

A = 21÷2×10

A = 10.5×10

A = 105

Units will be m² as this is area.

Harman [31]2 years ago
7 0

Step-by-step explanation:

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[(21+42)×3]+[4×(18+12)]=
Olin [163]
First you have to do the problem in the perenteces, so 21 + 42 = 63. Now we have to do 63 x 3 which is 189. We have to do the second one now so 18 + 12 is 30, and now we times that by 4, so know it is 120. Lastly we add 189 + 120 which gives us an answer of 309.

It is 309.

4 0
3 years ago
Read 2 more answers
a company pays its employees and average hourly wage of 36.25 with a standard deviation of 6.50 more than 23.22 of 36 employees
Yuliya22 [10]

Answer:

P [ X > 23,22 ]  = 0,8798      or  P [ X > 23,22 ]  =  87,98 %

Step-by-step explanation:

P [ X > 23,22 ]  =  1  -  P [X ≤ 23,22 ]

P [X ≤ 23,22 ] =  ( X - μ₀ ) / σ /√n

P [X ≤ 23,22 ] = ( 23,22 - 36,25 )/ 6,50/√36

P [X ≤ 23,22 ] =  - 13,03 *6 / 6,50

P [X ≤ 23,22 ] = - 12,02        or       P [X ≤ 23,22 ] = 12,02 %

(note the - sign only mean that values on the left tail of the bell shape curve)

Then

P [ X > 23,22 ]  =  1  -  0,1202

P [ X > 23,22 ]  = 0,8798      or  P [ X > 23,22 ]  =  87,98 %

8 0
3 years ago
Ray opened a savings account with $600 at 4.5% interest compounded quarterly and kept it in the account for 2 years. How much wa
nadezda [96]

Answer:

600(1 +0.045/4)^8

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
-3/4÷-1/2<br><br>pls help armieee​
PilotLPTM [1.2K]

Answer:

exact form : 3/2

decimal form 1.5

mixed number form 1 1/2

8 0
3 years ago
15)
Ludmilka [50]

Answer:

A, x>3

Step-by-step explanation:

You solve the equation as normal by crossing out both sides and getting what equals to x, but since you divided by a negative the sign flips and you are left with your answer. Hope this helps!

8 0
3 years ago
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