Answer:
36 cm
Step-by-step explanation:
rectangle perimeter = sum of all the side
10+8+10+8=36 cm
Answer:
Step-by-step explanation:
Perimeter =2(10+8)=36 cm.
please help fast ^^
Using the discriminant, determine the number of real solutions,
-2x^2+x-28= 0
Ono real solutions
O one real solution
O two real solutions
The number of real solutions is 0, the correct answer is A.
How to use discriminant to find the property of solutions of given quadratic equation?Let the quadratic equation given be of the form ax^2 + bx + c = 0, then
The quantity b^2 - 4ac is called its discriminant.
The solution contains the term [tex]\sqrt{b^2 - 4ac}[/tex] which will be:
Real and distinct if the discriminant is positive
Real and equal if the discriminant is 0
Non-real and distinct roots if the discriminant is negative
There are two roots of a quadratic equations always(assuming existence of complex numbers). We say that the considered quadratic equation has 2 solution if roots are distinct, and have 1 solutions when both roots are same.
We are given that;
The equation -2x^2+x-28= 0
Now,
The discriminant of a quadratic equation ax^2 + bx + c = 0 is given by b^2 - 4ac. The discriminant can be used to determine the number of real solutions of the equation as follows:
If the discriminant is positive, there are two distinct real solutions.
If the discriminant is zero, there is one repeated real solution.
If the discriminant is negative, there are no real solutions.
In this case, the quadratic equation is -2x^2 + x - 28 = 0. Comparing it with the standard form, we can identify that a = -2, b = 1, and c = -28. Therefore, the discriminant is:
b^2 - 4ac
= 1^2 - 4(-2)(-28)
= 1 - 224
= -223
Since, the discriminant is negative, there are no real solutions for this equation.
Learn more about discriminant of a quadratic equation here:
https://brainly.com/question/18659539
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HELP ASAP PLS 10 POINTS
Answer:
try a or b hope this helps
Answer:
top right
Step-by-step explanation:
May I please receive help?
Please?
Just find m2
Answer:
I'll assume the question says "m<1 is 12 deg. more than m<2."
Step-by-step explanation:
m<WXZ is 86
m<1 + m<2 = 86
m<1 = m<2 + 12
(m<2 + 12) + m<2 = 86
2m<2 + 12 = 86
2m<2 = 74
m<2 = 37
m<1 = 49
m<1 + m<2 = 86 [Checks]
Use the GCF and the Distributive Property to find the sum.
42+66
Write each number as a product using the GCF as a factor, and apply the Distributive Property.
42+66=??
Answer:
40 plus (2)42 plus 6x11
Step-by-step explanation:
Multiply
PLEASE ANSWER!!! 100 Points!
Can a square be determined given only
the length of a diagonal? Explain your
answer.
Answer:
No
Step-by-step explanation:
A diagonal divides a square into two congruent right trianglesWe can use the side lengths of the square to find the length of the diagonal.The angles of a square are equal to 90°Please help!!! Write 4x^2=12 in standard form?
Answer:
[tex]x = \sqrt{3} [/tex]
Step-by-step explanation:
4x^2=12
x^2=12/4
x= root 3
Solve the equation. Find x.
20x + 5 - 0 = 5x + 32.5*2
Can somebody solve this for me?
Answer:
Area of rectangle = L x W
Step-by-step explanation:
A = L x W
L = 18
W = 10 + 5
so,
A = 18 x (10+5)
A = 18 x 15
A = 270
help its due in 3 mins
Answer:
Can you please give me the question or link
Step-by-step explanation:
Can someone tell me the answer to this please???
Answer:
36
Step-by-step explanation:
Answer:
It's 36 ya know
Step-by-step explanation:
60 and 60 so 36 and 36
:)
When you rotate a figure, does every point move the same distance? Explain.
Answer:
Yes
Step-by-step explanation:
Because the figure is only 1 product or thing
Yes. Since the angle of rotation is the same, the distance that each point moves is the same.
SHOW WORK FOR CREDIT.
4. −10(x − 3)
A) −15x + 30
B) −10x + 30
C) −15x + 35
D) −15x + 37
Answer:
B) -10x + 30
Step-by-step explanation:
You have to multiply -10*x and -10*-3. -10*x equals -10x and -10*-3 is +30.
Answer:
[tex]\sf -10x+30[/tex]
Step-by-step explanation:
[tex]\sf -10(x - 3)\\-10x-\left(-10\right)\times \:3\\-10x+30[/tex]
Write the number 1, 256 in expanded form.
0 10,000 + 200 + 50 + 6
0 1,000 + 200 + 50 + 6
0 100 + 200 + 50 + 6
O 100 + 20 + 5 + 6
Answer:
1,000 + 200 + 50 + 6
If Sarah sold 20 bags of dog treats for $3.25 each, how much money did she earn? You must show your work to earn full credit.
Answer:
$65
Step-by-step explanation:
20 bags of dog treats multiplied by 3.25 = $65.00
Sarah made 65 dollars.
Answer:
Sarah earned $65.
Step-by-step explanation:
Create an equation.
20 representing the bags she has sold, 3.25 representing the value of each bag. If Sarah sold 20 bags of dog treats, with each of them being worth 3.25, then 20(3.25) = 65, meaning Sarah earned $65.
f(9) = -14. what is the value of f^-1(-14)
Please show step by step :)
Answer:
[tex]f^{-1}[/tex] (- 14) = 9
Step-by-step explanation:
f(9) = - 14 maps x = 9 to y = - 14
The inverse maps y = - 14 to x = 9 , that is
[tex]f^{-1}[/tex] (- 14) = 9
Help!!!!!!!!!!!!!!!!!!!
Answer:
Slope of a line perpendicular to y=4x+3 is −14 .
Step-by-step explanation:
...............
If you need the graph here it is
Jane has nickles and quarters in her pocket. There are 20 coins, totaling $3
Answer:
It is 10 quarters and 10 nickels
10 x 25 = $2.50
10 x 5 = $0.50
2.50 + 0.50 = $3.00
***I hope this helps
Step-by-step explanation:
4/5 - 3/8
plz help me might give brainlist
Answer:
17/40
Step-by-step explanation:
4/5-3/8=32/40-15/40
=17/40
Answer:
Solution:
17/40 Alternative form 0.425
Step-by-step explanation:
Explanation how:
Write all numerators above the least common denominator 40
32-15/40
hope to help
I need some help with this thank you!
Answer:
9
Step-by-step explanation:
2^28(3^-2/2^3)^4 x 1/(3^-5 x 2^8 x 6^0)^2
2^28(3^-2/2^3)^4 x 1/(3^-5 x 2^8 x 1)^2
2^28(3^-2/2^3)^4 x 243^2/256^2
2^28 x 1/2^12 x 3^8 x 243^2/256^2
243^2 x 1 x 2^28/256^2 x 3^8 x 2^12
2^28 x 243^2/2^12 x 3^8 x 256^2
2^16 x 243^2/3^8 x 256^2
2^16 x 3^10/2^16 x 3^8
=3^2
=9
plz help. solve for x. i’ll give brainly
Answer:
x = 17.331....
Step-by-step explanation:
Basically use Tan on the calculator to find x. Look up "soh cah toa" if you still dont understand what I am doing.
Tan(37) = opposite / adjacent = x / 23
x = Tan(37) (23) multiply by 23 on both sides to get this
x = 0.753.... (23) now multiply the tan value on the calculator
x = 17.331....
find the sum of the even integers from 20 to 50.
with solutions please help
Answer: 560
Step-by-step explanation:
There are [20, 22, 24, 26, 28]: 5 even integers for each ten numbers.
The 20's set can be written as 5*20 + (2+4 + 6 + 8) = 5*20 + (20) = 120
The 30's can be written: 5*30 + 20 = 170
40's: 5*40+20 = 220
50's: 5*50+20 = 270
60's: 5*60+20 = 320
Each set is incremented by 50
We want the sets for 20, 30, and 40, plus the number 50.
(120+170+220+50) = 560
You can also do this in Excel (attached). Set the first cell to 20, the next cell below equal to the cell above plus 2. Then draw the second cell down until you've reached 50. Then sum the cells to arrive at 560.
Evaluate the expression when x=-4. X^2+5x+7
Answer:
-29
= -16 + 5(-4) + 7
=16 - 20 + 7
=-29
What is the student error in the multiplication below?
Answer:
below what
Step-by-step explanation:
which expression shows 3 2/5 and -7 1/5 of the sum of integer and fraction parts
Answer:
-4 3/5
Step-by-step explanation:
3 2/5 + -7 1/5 = (3 - 7) + (2/5 + 1/5) = -4 3/5
Eric has 240 coins in his collection 11/20 are pennies and 4/40 are nickels
Answer:
There would be 36 coins left
Step-by-step explanation:
I don't know if that was the question but you would do:
11/20x2=22/40
22/40+4/40=26/40
26/40=13/20
One twentieth of 240 is 12
12x3=36
Hope this helped
May I please receive help????
Please
Answer:
43°
Step-by-step explanation:
Equation:m∠ABD = m∠1 + m∠2
Substitute:
68° = m∠1 + (m∠1 + 18°)
Solve:68° = m∠1 + (m∠1 + 18°)
68° = 2(m∠1) + 18°
50° = 2(m∠1)
25 = m∠1
Solution:Know that we know that m∠1 is, we can add 18* to find m∠2
25° + 18° = 43°
-Chetan K
(5,6) and (6,8) equation of line
please someone explain to me how did we multiply the denominator in this
ok so what you wanna do is use multiplication
Help me please!Please look at the pic then tell me if im wrong on something.Thank you! :)
Answer: for every 3 triangles there are 5 squares. not 4. so the ratio is 3:5.
could you give me brainliest pls?
You buy 6 items for $25.60. About how much did you spend?
Answer:
$4.20 i divided
Step-by-step explanation:
Answer:
156
Step-by-step explanation:
The question says about. So you have to Round 25.60. Since the 0.60 part is greater than 0.50, we round it up to 1. Now add 25 and 1 to get 26. Now multiply 26 x 6 to get your answer (156)