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Anton [14]
4 years ago
10

Evaluate the following expression when x = 6 and y = 2: Fraction with x squared plus y cubed in the numerator and 2 plus x in th

e denominator. 2.25 5.5 17.25 27.5
Mathematics
1 answer:
Sav [38]4 years ago
4 0

Answer:

Option B.

Step-by-step explanation:

The given expression is

\dfrac{x^2+y^3}{2+x}

We need to find the value of given expression when x=6 and y=2.

Substitute x=6 and y=2 in the given expression.

\dfrac{x^2+y^3}{2+x}=\dfrac{(6)^2+(2)^3}{2+(6)}

                   =\dfrac{36+8}{8}

                   =\dfrac{44}{8}

                   =5.5

The value of given expression is 5.5 when x=6 and y=2.

Therefore, the correct option is B.

You might be interested in
Y = f(x) = 16x Find f(x) when x = 1/2​
Alina [70]

Answer:

The answer depends on what the problem really is.

f(1/2) = 8

or

f(1/2) = 4

See below.

Step-by-step explanation:

This is the problem as it was posted:

y = f(x) = 16x

Let x = 1/2

y = f(1/2) = 16(1/2) = 8

Perhaps the problem is this:

y = f(x) = 16^x

If x is an exponent of 16 and not a factor, then the answer is:

y = f(\frac{1}{2}) = 16^\frac{1}{2} = \sqrt{16} = 4

5 0
3 years ago
I need a little help on 21
lidiya [134]

Answer:

560 seconds.

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
Please help. 25 points!
Misha Larkins [42]

Step-by-step explanation:

1-

(9 - 2) ^{2}  - (2 ^{2}  - 3 ^{2} ) + 2

calculate the powers behind the brackets from left to right

2-

(49) ^  - (4 - 9 ) + 2

Calculate the powers (a power squared means the number times itself so 2 squared equals 4)

3-

49 - - 5+2

Calculate the sum ( minus minus equals plus so for example 4- -5= 4+5=9)

4- 49+5+2= 56

8 0
3 years ago
Read 2 more answers
Jayden has $0.56 worth of pennies and nickels. He has a total of 20 pennies and nickels altogether. Determine the number of penn
alex41 [277]

Answer:

There are 9 nickels and 11 pennies

Step-by-step explanation:

Systems of equation:

x=nickels

y=pennies

0.56=0.05x+0.01y

x+y=20

8 0
3 years ago
How do you substitute math 3x+y=-14 and 2x-y=-19 step by step
anastassius [24]

Answer:

x=-33/5 y=29/5

Step-by-step explanation:

Let's solve your system by substitution.

3x+y=−14;2x−y=−19

Solve

3x+y=−14 for y:

3x+y=−14

3x+y+−3x=−14+−3x(Add-3x to both sides)

y=−3x−14

Next is to substitute −3x−14 in for y 2x−y=−19:

2x−y=−19

2x−(−3x−14)=−19

5x+14=−19(Simplify both sides of the equation)

5x+14+−14=−19+−14(Add -14 to both sides)

5x=−33 Dived both sides by 5

5x/5=-33/3

x=−33/5 since you can't dived and a fraction is another form of division you keep it this way.

Step: Substitute -33/5 for x in y=−3x−14:

y=−3x−14

y=−3(-33/5)-14

y=29/5

(Simplify both sides of the equation)(since you can't dived and a fraction is another form of division you keep it this way.)

So

x=-33/5 and y=29/5

Pls mark brailest this took me a long time to write out lol. Hope this truly helps! Send a heart if so, so I can keep spreading the help!

3 0
4 years ago
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