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qwelly [4]
3 years ago
9

The lengths of babies born at Tarth Hospital in the last year were normally distributed. The mean length was 50 cm and the stand

ard deviation was 3.5 cm. What proportion of babies are shorter than 46.5 cm? ​
Mathematics
1 answer:
nalin [4]3 years ago
8 0

Answer:

nl;

Step-by-step explanation:

bmn,./

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Otis paints the interior of a home for $45 per hour plus $75 for supplies. Shireen paints the interior of a home for $55 per hou
riadik2000 [5.3K]

Step-by-step explanation:

you should only make one equation:

75 + 45x = 30 + 55x

subtract the 30 frim both sides, then subtract 45x from both sides. you are left with:

45 = 10x

Divide by 10 and get:

4.5 = x

After 4.5 hours, the cost is equal for either worker.

8 0
3 years ago
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posledela

Answer:

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Step-by-step explanation:

3 0
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m_a_m_a [10]

Answer:

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5 0
2 years ago
Help me out please, im only typing this much because its making me...
Genrish500 [490]

Answer:

B.x^{2} +2x-8

Step-by-step explanation:

Here the best method to solve is by substituting the end values of the set in each option , otherwise it will a time consuming problem.

Now substitute x=-4 in all the options

A.x^{2} -2x-8

16+8-8=16>0

so out of option A and C option C is correct.

B.x^{2} +2x-8

16-8-8=0 which means for the values of x>-4 x^{2} +2x-8is less than 0

Now substitute x=2 in all the options

A.x^{2} -2x-8

4-4-8=-8<0 . so option A and C both are incorrect.

B.x^{2} +2x-8

4+4-8=0 which means for the values of x<2 x^{2} +2x-8 is less than 0

Therefore the correct option is B

6 0
3 years ago
Find the solution set.<br><br> The solution set for 5v2 – 125 = 0
bezimeni [28]

Answer:

5v2 – 125 = 0

5(v2−25)=0

v2−25=0

a couple more steps and the answer is...

v=-5

7 0
2 years ago
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