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gavmur [86]
3 years ago
6

Mr. Kelly has 50 coins, all of which are either nickels or dimes. They have a

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
3 0

So i think its $4.35.

Step-by-step explanation:

I did addition to find out this answer my calculations seem to be correct.

$3.85 + 50 cents = 4 dollars and 35 cents

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DanielleElmas [232]

This is incomplete, why did you include a link to the game?

5 0
3 years ago
Tommy can paint a fence in 6 hours. If his friend Huck helps, they can paint the fence in 1 hour. How fast could Huck paint the
Luda [366]
1hr/10min is the answer
8 0
3 years ago
30 points<br> can somebody please help me<br> question below
Inessa05 [86]

Find the total number of dogs by adding each day:

Total dogs = 23

Percent of dogs: Divide the number of dogs by the total number of patients:

= 23 / 50 = 0.46 x 100 = 46%

Use the given formula to find the standard error:

Standard error = √(0.46*(1-0.46)/50) = 0.07

90%: Find Z value for 90% ( 1.645) multiply by SE:

1.645 x 0.07 = 0.115 = 0.12

Now add and subtract that value from the Percent from above:

46 + 12 = 58%

46-12 = 34%

Answer (34%, 58%)

95%: Find Z value for 95% ( 1.96) multiply by SE:

1.96 x 0.07 = 0.137 = 0.14

Now add and subtract that value from the Percent from above:

46 + 14 = 60%

46-14 = 32%

Answer (32%, 60%)

5 0
3 years ago
Which expressions are equivalent to 3(6+b)-(2b + 1)?
Anna [14]

Answer:

18+3b-2b-1

b+17

Step-by-step explanation:

\mathrm{Using\:the\:distributive\:law}:\quad \:-\left(a+b\right)=-a-b

-\left(2b+1\right)=-2b-1

=3\left(6+b\right)-2b-1

=18+3b-2b-1

\mathrm{Group\:like\:terms}

=3b-2b+18-1

\mathrm{Subtract\:the\:numbers:}\:18-1=17

=3b-2b+17

\mathrm{Add\:similar\:terms:}\:3b-2b=b

=b+17

[RevyBreeze]

7 0
2 years ago
Write the following statements in equation form: If the sum of a number and its two fifth is 70
iren [92.7K]

Answer:

x +  \frac{2}{5}  \times x = 70 \\ x +  \frac{2}{5} x = 70

6 0
3 years ago
Read 2 more answers
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