Show your solution follow the steps need an answer, please need an answer, please.
Step-by-step explanation:
21. x² - 4x - 5 > 0
→ (x - 5) (x - 1) > 0
{x - 5 > 0
{x + 1 > 0
{x - 5 < 0
{x + 1 < 0
{x > 5
{x > -1
{x < 5
{x < -1
= x < -1 or x > 5
therefore, option A is correct
22). 4p² - 1 ≤ 0
(2p - 1) (2p + 1) ≤ 0
{2p - 1 ≤ 0
{2p + 1 ≥ 0
{2p - 1 ≥ 0
{2p + 1 ≤ 0
{p ≤ 1/2
{p ≥ -1/2
{p ≥ 1/2
{p ≤ -1/2
1/2 ≤ p ≤ 1/2
{p ≥ 1/2
{p ≤ -1/2
-1/2 ≤ p ≤ 1/2
therefore, option A is correct.
23). y < 3x² + 3x - 6
3x² + 3x - 6 = 0
3x² + 6x - 3x - 6 = 0
3x(x +2) - 3(x +2) = 0
(x +2) (3) (-3) = 0
x = -2, 1
this is the correct ans. but their is no option similar to it.
25. x and y are root of
m² - 11m + 18 = 0
hence, x + y = 11
xy = 18
2xy = 36
now, x² + y²
= (x +y)² - 2xy
= (11)² - 36
= 121 - 36
= 85
therefore, option A is correct.
26. x² - 2x - 120
(x -1)² - 1 - 1² = 0
(x -1)² = 1 + 1²
x - 1² = 2
x - 1 = ±√2
1 ± √2
therefore, option A is correct.
hope this answer helps you dear..take care!
Answer:
Step-by-step explanation:
21) x² - 4x - 5 > 0
x² - x + 5x - 5 > 0
x(x - 1) + 5(x - 1) > 0
(x - 1) (x + 5) > 0
x - 1 >0 or x + 5 > 0
x > 1 or x > - 5 Ans: D
22) 4p² ≤ 1
p² ≤ 1/4
p ≤ 1/2 or p ≥ -1/2
-1/2 ≥ p ≤ 1/2
23)y < 3x² + 3x - 6
(1 , -7)
x = 1 and y = -7
-7 < 3*1 + 3*1 - 6
-7 < 3 + 3 - 6
-7 < 0
(1 , -7) satisfies the equation.
Option b
24) 5x² - 7x = 0
a = 5 ; b = -7 ;c = 0
Discriminant = b² - 4ac = 49 - 0 = 0
[tex]x = \dfrac{-b+\sqrt{D}}{2a} \ ; \ \dfrac{-b-\sqrt{D}}{2a}\\\\x = \dfrac{7+\sqrt{49}}{10} ; \dfrac{7-\sqrt{49}}{10}\\\\x = \dfrac{7+7}{10};\dfrac{7-7}{10}\\\\x =\dfrac{14}{10} ; 0\\\\x = \dfrac{7}{5}; 0[/tex]
x = 0 ; x = 7/5 Option a)
25) m² - 11 m + 18 = 0
m² - 2m - 9m + (-9)*(-2) = 0
m(m - 2) - 9(m - 2) = 0
(m - 2)(m - 9) = 0
m = 2 , 9
x = 2 and y =9
x² + y² = 2² + 9² = 4 + 81 = 85 Option a)
26) x² - 2x - 1 = 0
Add the constant 1 to both sides
x² - 2x = 1
Divide the coefficient of x by 2. 2/2 = 1. Now add this 1 to both sides of the equation.
x² - 2x + 1 = 1+1
x² - 2x + 1 = 2
(x - 1)² = 2
Take square root
x - 1 = ±√2
x = 1 ± √2 Option a)
A publisher reports that 28% of their readers own a personal computer. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 300 found that 23% of the readers owned a personal computer. Determine the P-value of the test statistic. Round your answer to four decimal places.
cacacacacacas
⇆⇆⇄πβ≅≅ΔΔΔ
yes
1) At Frannie's Fruit Market the price per orange (or unit rate) is $0.45. If a graph is made showing
the relationship between the number of oranges (x) and the total cost (y), which does not
represent the slope of the line?
50 POINTS
Answer:
b) 5/9Step-by-step explanation:
The unit rate is same as the slope:
m = 0.45 = 45/100 = 9/20Compare with the answer choices:
a) 45/100, Same or equivalentb) 5/9, Differentc) 9/20, Same or equivalentd) 27/60 = 9/20, Same or equivalentMatch the following sentences on the left with their algebraic expression on the right.
a. The product of 5 and the sum of a number and 8
Product means multiplied, so that means 5 multiplied by some number plus 8, thus, 5(x+8)
b. A number less than 12
12-x would equal less than
c. The product of five and a number divided by 2
Again, product means multiplied, so its saying 5 times something, all divided by 2, thus, 5x/2
Please give brainliest :) hope this helps!
Answer:
A number less than twelve = 12 - x = b
The product of five and a number divided by two = 5x/2 = c
The product of five and the sum of a number and eight = 5(x+8) = a
Step-by-step explanation:
A number less than twelve
12 minus a number
12 - x
The product of five and a number divided by two
A number times 5 divided by 2
5x/2
The product of five and the sum of a number and eight
A number plus 8 times 5
(x+8)*5
5(x+8)
Solve.
−0.2x−2.73=−3.2
Enter your answer as a decimal or as a mixed number in simplest form in the box.
x =
Answer:
x = 2.35
Step-by-step explanation:
Answer:
2.35 for K12
Step-by-step explanation:
3
Select the correct answer.
Jenny is tracking the monthly sales totals for her boutique. The given plecewise function represents the boutique's monthly sales, in dollars,
where x represents the number of months since Jenny began tracking the data.
(4,000(1.1)",
0 < I<3
1001 + 5,024,
3 < I<6
-12 + 5 + 5,630, 6
What were the boutique's monthly sales when Jenny first began tracking the data?
ОА.
$5,616
B.
$4,000
Ос.
$5,324
OD
$4,400
Reset
Next
Answer:
B. $4,000.
Step-by-step explanation:
solve pls brainliest
Answer:
white
4 were sold
3 more gray were sold than white
3 colors sold 10 or more
Answer:
a) White
b) 3
c) 3
Step-by-step explanation:
a) White as it is the shortest bar (has the lowest height and only has 4 t-shirts sold)
b) According to the bar graph, 7 grey t-shirts were sold and 4 white t-shirts were sold. Subtracting 4 from 7 = 7-4 = 3
Hence, 3
c) At least 10 T-shirts sold, suggests that it was greater than or equal to 10. According to the graph, black has 12, tan has 11, and brown has 10. Hence,
3 colors had at least 10 t-shirts sold.
Hope this helps and be sure to have a wonderful time ahead at Brainly! :D
Feel free to mark this as brainliest!
What cross sections might you see when a plane intersects a cone that you would not see when a plane intersects a prism or a pyramid
Answer:
the long They speaker by my parents waving the firstpassword of their Tainz i = -5 3 , có R 1 1 e z z = 5, Im 3 = -
Help!! Will give brainliest
Answer:
Last option
Step-by-step explanation:
[tex]-2(z + 3) - z = x - 4(z + 2)[/tex]
[tex]x = -2(z + 3) - z + 4(z + 2)[/tex]
[tex]x = -2z - 6 - z + 4z + 8[/tex]
[tex]x = z + 2[/tex]
ALGEBRA STUFF IS ANNOYING
Answer:
A?
Step-by-step explanation:
If Y = $1265, C = $660, and I = $325, solve for G.
Answer:
285
Step-by-step explanation:
assuming youre saying 1265 = 660 + 325 + g
Complete each ordered pair so that it is a solution of the given linear equation. x - 3y=4;(.-3), (-11, ) The first ordered pair is 0-3).
Answer:
Step-by-step explanation:
x - 3y = 4
x - 3(-3) = 4
x + 9 = 4
x = -5
(-5, -3)
-11 - 3y = 4
- 3y = 15
y = -5
(-11, -5)
I don't see how (0, -3) could be a solution to the equation.
The container that holds the water for the football team is
1/2
full. After pouring in 9 gallons of water, it is 4/5 full. How many gallons can the container hold?
Answer:
45
Step-by-step explanation:
nnnnnnnnnnbbbbbbbhhhhbjjjj
Which of the following is the solution to the quadratic equation
x2−10x+21=0 ?
Step-by-step explanation:
the answer is the image above
Answer:
x=3 and x=7
Step-by-step explanation:
x2 - 10x + 21=0
a=1, B=-10, c=21
delta= b2 - 4(ac)
if delta >0 => have two answer
x1= -b - _/delta / 2a = -(-10) - _/16 / 2.1 = 3
x2= -b + _/delta /2a = -(-10) + _/16 / 2.1= 7
10
When 12x4 - 3x3 + 6x2 is divided by 3x2, the quotient is -
F
4x2 – 3x3 + 6x2
ninov niola
12x4 - 3x3 + 2
-
H
9x2 - x + 2
-
J
4x2 - x + 2
Answer:
plz explain simplier
Step-by-step explanation:
Subtract 8 1/6 - 4 5/6 Simplify the answer and write as a mixed number.
Answer: A
Step-by-step explanation:
Ants love to eat Whales. You learn something new everyday! :)
I need help with this math problem ASAP please an explanation too
Answer:
the answer is 300
Step-by-step explanation:
You can
apply the rules of exponents to the problem in BOTH radical form and rational exponent
form true or false
Answer:
When dealing with radicals and exponents, one must realize that fractional exponents deals directly with radicals. In that sense, sqrt(x) = x^½. In a fractional exponent, the numerator represents the actual exponent of the number. So, for x^2/3, the x is being squared.For the denominator, that deals with the radical. The index, to be exact. The index describes what kind of radical (or root) is being taken: square, cube, fourth, fifth, and so on. So, for our example x^2/3, x is squared, and that quantity is under a cube root (or a radical with a 3).^^^Exponential fractions still follow the same rules of simplifying, so...
x^2/4 = x^1/2 = sqrt(x)
Step-by-step explanation:
When dealing with radicals and exponents, one must realize that fractional exponents deals directly with radicals. In that sense, sqrt(x) = x^1/2
Now, how to go about doing this:
In a fractional exponent, the numerator represents the actual exponent of the number. So, for x^2/3, the x is being squared.
For the denominator, that deals with the radical. The index, to be exact. The index describes what KIND of radical (or root) is being taken: square, cube, fourth, fifth, and so on. So, for our example x^2/3, x is squared, and that quantity is under a cube root (or a radical with a 3). Here are some more examples to help you understand a bit more:
x^6/5 = Fifth root of x^6
x^3/1 = x^3
^^^Exponential fractions still follow the same rules of simplifying, so...
x^2/4 = x^1/2 = sqrt(x)
Use the spinner below to find the probability of getting the following after 1 spin
Answer:
.0833 or 83.3333
Step-by-step explanation:
1/12=.0833
The probability of number greater than [tex]12[/tex] is zero.
What is probability ?Probability is the ratio of number of favorable outcome to the total number of outcome.
We have,
Total number of outcome [tex]=12[/tex]
And number of greater than [tex]12[/tex] [tex]=0[/tex]
So,
Probability [tex]=\frac{Number\ > \ 12}{Total\ number}[/tex]
[tex]=\frac{0}{12}[/tex]
Probability [tex]=0[/tex]
A probability of [tex]0[/tex] means that the event will not happen.
Hence, we can say that the probability of number of greater than [tex]12[/tex] is zero.
To know more about Probability click here
https://brainly.com/question/11234923
#SPJ3
If you have 1/4 of a pie left and you give away 5/8 how much pie do you have left
Answer:
You cannot give away more than you have. You have no pie left.
Step-by-step explanation:
1/4 - 5/8
Multiply 1/4 by 2 to get a common denominator in order to subtract.
2/8 - 5/8
= -3/8
You can't have -3/8 of a pie.
Therefore, you have no pie left.
Ten times the smallest of three consecutive integers is 213 more than the sum of the other two integers. Find the integers.
Answer:
27,28 and 29
Step-by-step explanation:
10*a = a+1+a+2+213
10a - 2a = 216
8a = 216
a = 27
27, 28, and 29
Evaluate - 24-(-18) = 6.
Answer:
False
Step-by-step explanation:
-24-(-18) is -6 not 6 so it would be untrue
Divide:
27.68) 2363.872
Answer:
85.4
Step-by-step explanation:
PPPPLLLSSS HELP THIS IS WORTH SIXTY PERCENT OF MY GRADE. I DONT GET HOW SINCE IT ONLY TWO QUESTIONS BUT IT IS. PLEASE HELP
1. What is the value of the expression 15⋅6-2^2⋅8+4^3 is ______
2. What is the value of the expression 2^3+2^2⋅2+6-2^1⋅2^0-1 is ______
Answer:
122; 19Step-by-step explanation:
#115 ⋅ 6 - 2² ⋅ 8 + 4³ =15 ⋅ 6 - 4 · 8 + 64 = 90 - 32 + 64 = 58 + 64 = 122#22³ + 2² ⋅ 2 + 6 - 2¹ ⋅ 2⁰ - 1 =8 + 4 · 2 + 6 - 2 · 1 - 1 = 8 + 8 + 6 - 2 - 1 = 22 - 2 - 1 = 20 - 1 =19The process of squaring a number by itself twice is called
Answer:
square root
Step-by-step explanation: i think this is right but please tell me if it is wrong
What is the square root of -1?
Answer:
it's not possible i any ways
square root of negetive numbers is not possible
Step-by-step explanation:
hope it helps you
Answer:
Like all non-zero numbers, −1 has two square roots, which we call i and −i
so its i
PLEASE HELP ME. HAVE TO BE DONE IN FRACTION
3/4 - 7/9 + 2/3 =
Answer:
23/36
Step-by-step explanation:
use BODMAS
fist add 3/4+2/3
to get 17/12
then subtract 17/12-7/9
to get 23/36
Find the value of x and y in the following diagram
Answer:
Below in bold.
Step-by-step explanation:
y = 40 degrees ( opposite angles)
The triangle on the left is isosceles so
2x + 2x + 40 = 180
4x = 140
x = 35 degrees.
What is the domain of y=log 4(x+3)
Answer:
domain is the set of numbers you can use for x
Step-by-step explanation:
log_4(x+3)=y means
I mean it translates to
4^y=x+3
remember that x^m≥0 for all real values of x and m
it actually can equal 0 only when x=0 or when x is very small
so
therefor since 4^y>0, x+3>0 as well
solving we get
x>-3
all real numbers greater than -3
2nd option