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
IgorLugansk [536]
3 years ago
6

What is the value of z so that -9 and 9 are both solutions of x^2+z=103?

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0
The answer is C.
x^2 + z = 103x^2 + 22 = 103*Subtract both sides by 22*x^2 + 22 - 22 = 103 - 22x^2 = 81*square root both sides to find x*√x^2 = <span>√81</span>
<span>x = +- 9</span>
You might be interested in
I don’t know the answer please help me
krek1111 [17]

Answer:

Alternate Interior angle. D.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Seven fifths of a number, z, subtracted from 6 times the same number is 3 .
Alex_Xolod [135]
6z-7z/5=3

(30z-7z)/5=3

30z-7z=15

23z=15

z=15/23
8 0
3 years ago
[khan academy] <br><br> hello, please help me with this if youre able to, thanks uwu
Ostrovityanka [42]

Answer:

11 units

Step-by-step explanation:

To calculate CD use the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = C(- 4, 6) and (x₂, y₂ ) = D(- 4, - 5)

CD = \sqrt{(-4+4)^2+(-5-6)^2}

     = \sqrt{0^2+(-11)^2}

     = \sqrt{0+121} = \sqrt{121} = 11

6 0
3 years ago
Read 2 more answers
What fraction of a circle measures 20 deegres
Temka [501]
A circle is 360 degrees so 360 divided by 20=18 so 20 degrees is one 18th of a circle 
5 0
3 years ago
Read 2 more answers
The time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with l=0.0003
Dvinal [7]

Answer: 0.0497870 ; 0.87754

Step-by-step explanation:

Given that :

λ = 0.0003

Defining a continuous distribution function :

F(x) = 1 - e^-λx = 1 - e^-0.0003x ; x ≥ 0

a. What proportion of the fans will last at least 10,000 hours?

P(x ≥ 10000) = e^-0.0003(10000) = 0.0497870

b. What proportion of the fans will last at most 7000 hours?

P(x ≥ 7000) = 1 - p(x ≤ 7000) = 1 - e^-0.0003(7000)

1 - 0.12245642825 = 0.87754

3 0
3 years ago
Other questions:
  • A stadium floor there is in the shape of a circle has a diameter with a length of 50 yards what is the area of the circle on the
    14·1 answer
  • How many meters are equivalent to 247 centimeters?
    11·1 answer
  • Jorge is comparing two data sets. He uses the mean and mean absolute deviation to compare the center and variability of the data
    10·2 answers
  • Two ropes are attached to the bumper of a car. Rope A is pulled with a force of 60 pounds at an angle of 30° to the horizontal g
    10·1 answer
  • So do you know ughhh
    10·1 answer
  • Bob has $10350 in his defined contribution plan at work. Of that balance $7573.25 comes from his own contributions and $2776.75
    10·1 answer
  • How could you use 1/8 cup measuring cup to measure the water
    7·2 answers
  • 3 \frac{1}{4}[/tex] = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D" id="TexFormula1" title="\frac{1}{2}" alt="\frac{1
    12·1 answer
  • A garden is shaped in the form of a regular heptagon (seven-sided), MNSRQPO. A circle with center T and radius 25m circumscribes
    8·1 answer
  • Work out the area of this triangle.<br> 6 cm<br> 11 cm<br> 12 cm
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!