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Artist 52 [7]
3 years ago
13

If f(x) = √ x + 11, what is f (20)?

Mathematics
1 answer:
mylen [45]3 years ago
8 0

Answer:

2sqrt(5)+11

Step-by-step explanation:

f(x)=sqrt(x)+11

f(20)=sqrt(20)+11

f(20)=sqrt(4*5)+11

f(20)=sqrt(4)*sqrt(5)+11

f(20)=2*sqrt(5)+11

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Answer, please. I need help.
kumpel [21]

Answer:

2i, if you don't understand any of the steps let me know, I'd be happy to explain.

Step-by-step explanation:

\sqrt{-x} =\sqrt{-1*x} ,\sqrt{xy}=\sqrt{x} \sqrt{y},   \sqrt{-1}=i

so in order -4 = -1 * 4 so then \sqrt{-1*4}=\sqrt{-1} \sqrt{4} then just solve each

4 0
3 years ago
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mei has 15 oranges,9 peaches, and 18 pears. she wants to put all of the fruit into decorative baskets, what's the greats number
pashok25 [27]

Answer:

15,9,8 can be divided by 3

so, the greatest number of fruit in each basket is 3 Step-by-step explanation:

6 0
3 years ago
Please help me with this question
Bezzdna [24]

Answer:

1.03

Step-by-step explanation:

To find the volume of a prism, find the area of the base and multiply it by the height.

The base is an octagon. The area is found A = 2(1+\sqrt{2})a^2. Substitute a = 0.5.

A = 2(1+\sqrt{2})(0.5^2)\\A = 4.828...(0.25)\\A = 1.21

The volume is 1.21*2.5 = 3.025.

However, there are three holes drilled out half way which each have volume 0.06.

The volume is found as V = πr²h. Substitute r = 0.125 which is half the diameter of 0.25. Since they go half way, the height is h = 1.25.

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Since there are 3, they equal 3*0.06 = 0.18.

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4 0
3 years ago
Please help thanks in advance
Over [174]
\frac{2(5)^2}{5} +5(100-15(5))\\\\  \frac{2*25}{5}+5(100-15(5))\\\\ \frac{50}{5}+5(100-15(5))\\\\ 10+5(100-15(5))\\\\ 10+5(100-75)\\\\ 10+5(25)\\\\ 10+125\\\\ 135\\\\ Final answer: 135\\
8 0
3 years ago
Charlotte’s weekly paycheck is based on the number of hours worked during the week and on the weekend. If she works 13 hours dur
Gelneren [198K]
I am setting the week hourly rate to x, and the weekend to y.  Here is how the equation is set up:

13x + 14y = $250.90
15x + 8y = $204.70

This is a system of equations, and we can solve it by multiplying the top equation by 4, and the bottom equation by -7.  Now it equals:

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$105.30 + 14y = $250.90.  Subtract $105.30 from both sides --> 14y = $145.60 divide by 14 --> y = $10.40

Now we know that she makes $8.10 per hour on the week days, and $10.40 per hour on the weekends.  Subtracting 8.1 from 10.4, we figure out that she makes $2.30 more per hour on the weekends than week days.
7 0
3 years ago
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