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Radda [10]
3 years ago
13

Find the slope of the tangent line to f(x) = 2x +3 at at x = 2.

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
6 0
The slope is 2 at all points on f(x) since f’x is just 2
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Briana buys a ring marked $49.99. She receives a 20% discount. Which equation can be used to find the sale price of the ring?
sergij07 [2.7K]
Answer B, s = 49.99(0.80)
5 0
3 years ago
What is 60 -1 1/2 (8) 2 equal
sleet_krkn [62]

Answer:

Step-by-step explanation:

60 -1 1/2 (8) 2

= 60 - 3/2 (8)(2)

= 60 - 3(8)

= 60 - 24

= 36

5 0
3 years ago
Joelle has $15.75. She spent $6.38 at the store.
Alborosie
X + 6.38 = 15.75<span> would be the answer 
      x=9.37
for the first option, you are not adding 15.75 and x together. 
for the second option, it is correct, because in the problem, it is giving the operation, 15.75-6.38=x. when you turn it do inverse operation, you get </span><span>x + 6.38 = 15.75. 
for the third option, it doesn't make sense and it's not doing what the problem is asking for.
for the fourth option, you are not multiplying. you are subtracting </span>15.75 by<span> 6.38 to get x.</span>
4 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLIEST!!
vlabodo [156]

The answer is the square root of 4.

2 * 2 = 4

2 is a rational number; therefore, the square root of 4 is a rational number.

7 0
3 years ago
Read 2 more answers
Prove that an = 4^n + 2(-1)^nis the solution to
olga nikolaevna [1]

Answer:

See proof below

Step-by-step explanation:

We have to verify that if we substitute a_n=4^n+2(-1)^n in the equation a_n=3a_{n-1}+4a_{n-2} the equality is true.

Let's substitute first in the right hand side:

3a_{n-1}+4a_{n-2}=3(4^{n-1}+2(-1)^{n-1})+4(4^{n-2}+2(-1)^{n-2})

Now we use the distributive laws. Also, note that (-1)^{n-1}=\frac{1}{-1}(-1)^n=(-1)(-1)^{n} (this also works when the power is n-2).

=3(4^{n-1})+6(-1)^{n-1}+4(4^{n-2})+8(-1)^{n-2}

=3(4^{n-1})+(-1)(6)(-1)^{n}+4^{n-1}+(-1)^2(8)(-1)^{n}

=4(4^{n-1})-6(-1)^{n}+8(-1)^{n}=4^n+2(-1)^n=a_n

then the sequence solves the recurrence relation.

4 0
3 years ago
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