MATHEMATICS HIGH SCHOOL

N Squared - N = 90
N =?

Answers

Answer 1
Answer: n^2 - n = 90
n^2 - n - 90 = 0
(n - 10)(n + 9) = 0

n - 10 = 0
n = 10

n + 9 = 0
n = -9

answer is : n = 10 and n = -9

Related Questions

Don't understand these problems
Yeah I don’t get this
NYS COMMON CORE MATHEMATICS CURRICULUM Lesson 17 Date Name Lesson 17 Solutions Eric's father works two part-time jobs, onc in the morning and one in the afternoon, and works a total of 40 hours each 5-day workweek. If his schedule is the same each day, and he works 3 hours each morning, how many hours does Eric's father work each afternoon?
there are two numbers that are 3 times as far from 19 as they are from 11. the sum of the two numbers is?
What value of x is in the solution set of 3(x-4)>/= 5x+2

Matthew and Andrew leave an intersection atthe same time. Matthew travels due east
at 30 mph and Andrew travels due south at
40 mph. If nothing causes either to stop for
any reason how far apart are they after
1 hour?

Answers

d i believe so it might be d if not i’m sorry

Choose the property of addition that the statement illustrates.
a + (b + c) = (a + b) + c

Answers

Hello,

It is just the associativity of reals's addition .

The vertices of parallelogram ABCD are A(2,1),B(3,4),C(5,3), and D(4,0). ABCD is reflected over the x-axis to create parallelogram QRST. What are the coordinates of QRST?A
Q(−2,1),R(−3,4),S(−5,3),T(−4,0)

B
Q(−2,−1),R(−3,−4),S(−5,−3),T(−4,0)

C
Q(1,2),R(4,3),S(3,5),T(0,4)

D
Q(2,−1),R(3,−4),S(5,−3),T(4,0)

Answers

Answer:

The correct answer is:

D)   Q(2,1)  R(3,-4) S(5,-3) T(4,0)

Step-by-step explanation:

When you reflect over the x-axis the vertices of the parallelogram, the y -coordinates is multiplying by -1.

Then the new coordinates of the parallelogram are:

Q(2,-1)  R(3,-4) S(5,-3) T(-4,0)

12 divided by what equals -2

Answers

Ans : -2*-6=12
-+-=+

David typed 210 words in 30 minutes. What is her rate of typing?

Answers

210 words ... 30 minutes
x words ... 1 minute

If you would like to know how many words can David type in 1 minute, you can calculate this using the following steps:

x * 30 = 210 * 1      /30
x = 210 / 30
x = 7 words

Result: David can type 7 words in 1 minute.

Tickets to a baseball game cost $18.95, $12.95, or $9.95. A hot dog and soda combo costs $5.50. The Madison family is having a reunion. They buy 10 tickets in each price category and plan to buy 30 combos. What is the total cost for the tickets and mealsI GOT 583.5 JUST WANT A SECOND CHECK

Answers

Hmmm Interesting: 189.5+129.5+99.5+53
I got 471.5 Dollars....

Because Look If they buy 10 tickets each category it be 18.95 times 10= 189.5
then 12.95 times= 129.5 , Then 9.95 times= 99.5.... Also if they plan to get 30 combos it be also 5.50 times 30,,, You add the answers and it will give you 471.5 dollars. You can try doing it in a caculator (:
You want to times each ticket price by 10 then add them together, then $5.50 by 30.

$18.95*10 = $189.50
$12.95*10 = $129.50
$9.95*10 =  $99.50
$189.50+$129.50+$99.50 = $418.5

Then do $5.50*30 = $165

Then add them both together.
418.5 + 165 = 583.5

You were correct.
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