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Rus_ich [418]
3 years ago
15

What are the zeros of the function f(x) = x2 – 10x + 21? help bro

Mathematics
1 answer:
Nady [450]3 years ago
5 0

Answer:

3, 7

Step-by-step explanation:

"Zeros" means solutions to the equation f(x) = 0.  In other words, what are the values of  x  that make the function's value equal to zero?

This one can be solved by factoring.

x^2-10x+21=0\\(x-7)(x-3)=0\\x-7=0 \text{ or } x-3=0\\x=7 \text{ or } x=3

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Leno4ka [110]
The center points , so the ones with a full line divide by 2
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2 years ago
Read 2 more answers
What’s the correct answer
Stels [109]
a_n=a_{n-1}+7 \ \ \to  \ \ d=7 \\  \\ a_n=a_1+d(n-1) \\ a_n=17+7(n-1) \\  a_n=17+7n-7 \\ a_n=7n+10

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5 0
3 years ago
What are the solutions of the quadratic equation 49x^2=9?
Flauer [41]
<span>Simplifying 49x^2 + -9 = 0
Reorder the terms: -9 + 49x^2 = 0
Solving -9 + 49x^2 = 0 Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation. -9 + 9 + 49x^2 = 0 + 9
Combine like terms: -9 + 9 = 0 0 + 49x^2 = 0 + 9 49x^2 = 0 + 9
Combine like terms: 0 + 9 = 9 49x^2 = 9
Divide each side by '49'. x^2 = 0.1836734694
Simplifying x^2 = 0.1836734694
Take the square root of each side: x = {-0.428571429, 0.428571429}

hope this helps!!</span>
5 0
3 years ago
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wlad13 [49]

Answer:

y = 17x

Step-by-step explanation:

8 0
3 years ago
Roland receives $500 as a graduation present from his aunt. He plans to use part of the money to purchase a laptop for $289, inc
katrin [286]

Answer:

52x < $211

Step-by-step explanation:

If Roland uses $289 to purchase the laptop from the $500 that was given to him then he would be left with

500 - 289 = $211

With this he can purchase video games. Since each video game costs the same price of $52 then we can use the variable x to represent the number of games he can buy with the following inequality...

52x < $211

5 0
3 years ago
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