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
Determine if the statement is true or false 10,000-99,999&lt;0
a_sh-v [17]
It would be true because 10,000-99,999=-89999 -89999<0 is true
3 0
3 years ago
Bert is planning to open a savings account that earns 1.6% simple interest yearly. He wants to earn exactly $240 in interest aft
RoseWind [281]

Answer:

D. $5,000

Step-by-step explanation:

The amount of money he should deposit is the principal.

The principal P can be gotten by

P = 100 I /RT

Where

I = interest

R = rate

T = Time

Given

I = $240

R = 1.6%

T = 3 yrs

P = 100 x 240 /1.6 x 3

Multiply through

= 24000/4.8

= $5000

5 0
3 years ago
Im sorry for so many questions but i need help badly.
vlada-n [284]
The ratio of the circumference to the diameter is defined as pi
pi=circumference/diameter
that is how they got pi
in this question it woul be 15.7/5 which would be 3.14,





c=2pir
a=pir^2

c=2pir=16pi
divide both sides by 2pi
r=8

a=pir^2
a=pi8^2
a=pi64
a=64pi in²
5 0
3 years ago
I need help with 9-11 shown above in the picture. Please explain if you can
Lunna [17]
Its telling you how many marbles there are and the coler that be used on 9-11 ,its asking you to find the outcome same with 10,now 11 describe the scoring and how its a fair game if you need aswere let me know and i help with them
8 0
3 years ago
Maria bought a blouse on sale for 30% off. The sale price was $28.76. What was the original price? Write an equation to model th
Snowcat [4.5K]

Answer:

The equation is <u>sale price</u>=p and the original price is $41.09.

                              .70

Step-by-step explanation:

sale price= (1-.30)p      

<u>sale price=.70</u>p

.70              .70

<u>sale price</u>=p                  

.70

<u>28.76</u>=p

.70

$41.09=p

7 0
3 years ago
Other questions:
  • How do you write680,705 in expanded form
    13·1 answer
  • PIZZA estimate the area of the top of a round pizza that has a diameter of 16inches.round to the nearest tenth.
    10·2 answers
  • Y = x^2-3<br>8x - y = 18​
    5·1 answer
  • What decimal is equal to 40%?<br><br> A 0.04<br> B 0.4<br> C 4<br> D 400
    14·1 answer
  • Factor completely. 21a^2 - 57a + 30
    14·2 answers
  • What is the value of the following expression <br><br> -42(3.6)
    6·2 answers
  • What is the imgae point of (-2,-3) after a translation right 2 units and 4 up units?​
    6·1 answer
  •  Can someone pleaseeee help if you’re correct I’ll give u brainlist
    11·1 answer
  • someone please help me with this if one person already answers then dont answer i only have a few points left and need it for sc
    8·1 answer
  • Multiplying by 0.89 is the same as decreasing by _____%.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!