1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ohaa [14]
3 years ago
13

use the quadratic formula to find the zeros of the function round to the tense of necessary y= 17x^2-21

Mathematics
1 answer:
Kitty [74]3 years ago
6 0
y=17x^2-21\\\\\text{The zeros of the function:}\ y=0\iff17x^2-21=0\ \ \ |+21\\\\17x^2=21\ \ \ |:17\\\\x^2=\dfrac{21}{17}\to x=\pm\sqrt{\dfrax{21}{17}}\\\\x\approx-1.1\ \vee\ x\approx1.1

\text{Use the quadratic formula:}\\\\y=17x^2-21\\\\a=17;\ b=0;\ c=-21\\\\b^2-4ac=0^2-4\cdot17\cdot(-21)=1428\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-0-\sqrt{1428}}{2\cdot17}=-\dfrac{\sqrt{1428}}{34}\approx-1.1\\\\x_2=\dfrac{-0+\sqrt{1428}}{2\cdot17}=\dfrac{\sqrt{1428}}{34}\approx1.1
You might be interested in
What is the are of this triangle? ( Look at the photo)
Eva8 [605]

Answer:

9 x 4 = 36 divided by 2 = 18

3 0
2 years ago
Each beehive on Larson's Honey Farm usually produces 85 pounds of honey per year. About how many pounds of honey will 1000 hives
never [62]
85000 pounds of honey 
5 0
3 years ago
Read 2 more answers
Use the distributive property to factor the expression. 15x + 6 A) 2 5 B) − 2 5 C) 3(5x + 2) D) 5(3x + 6)
katovenus [111]

Answer:

3(5x + 2)

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
I need help with the equation!
natka813 [3]
I think it’s y=w-10, since I see a pattern of subtraction
8 0
3 years ago
Read 2 more answers
Help me here! cant seem to find the answer.. ;-;
Nesterboy [21]

Answer:

slope equals 3

7 0
2 years ago
Read 2 more answers
Other questions:
  • In a packing plant, one of the machines packs jars into a box. A sales rep for a packing machine manufacturer comes into the pla
    15·1 answer
  • 49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively
    11·1 answer
  • Point M is the midpoint of segment AB. If AM = 50 – 3x and MB = –20 + 4x, find the value of x. x = -10 x = 10 x = -20 x = 20
    12·1 answer
  • HELP ASAP PLSSSSSSS
    15·1 answer
  • Joshua currently does a total of 8 pushups each day. He plans to increase the number of pushups he does each day by 2 pushups un
    5·1 answer
  • Simplify (4^2)^5<br> ^ = exponent please help will award the Brainlyest
    12·1 answer
  • Help me with this please
    12·1 answer
  • I could really use your help:)
    6·1 answer
  • Find two integers whose sum is -12 and product is 35
    10·1 answer
  • What is the value of y in the equation 2(2y - 12) = 0?<br> 04<br> 06<br> 07<br> 08
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!