Answer:
Option 1,3,4,6 are correct
Explanation
Step-by-step explanation:
we have formula for discriminant that is D=b^{2} -4acD=b
2
−4ac
when D>0 the roots are real and unequal
when D= 0 roots are real and equal
and when D< 0 roots are imaginary or not real and unequal
In 1st equation: x^2+6x+8x
2
+6x+8
a=1,b=6,c=8 on substituting the values in the formula we will get
D=6^2-4(1)(8)=4 > 0D=6
2
−4(1)(8)=4>0 hence real and unequal roots.
In 2nd equation:x^2+4x+8x
2
+4x+8
a=1,b=4,c=8 on substituting values in formula
D=4^2-4(1)(8)=-16 < 0D=4
2
−4(1)(8)=−16<0 so roots are not real
In 3rd equation x^2-12x+3x
2
−12x+3
a=1,b=-12,c=3 on substituting values
D=D=(-12)^2-4(1)(3)=132 > 0D=(−12)
2
−4(1)(3)=132>0 roots are real and unequal
In 4th equation: x^2+4x-1x
2
+4x−1
a=1,b=4,c=-1 on substituting the values
D= 4^2-4(1)(-1)=20 > 0D=4
2
−4(1)(−1)=20>0 real roots
In 5th equation:5x^2+5x+45x
2
+5x+4
a=5,b=5,c=4 on substituting the values
D=5^2-4(5)(4)=-55 < 0D=5
2
−4(5)(4)=−55<0 roots are not real
In 6th Equation: x^2-2x-15x
2
−2x−15
a=1,b=-2,c=-15 on substituting the values
D=(-2)^2-4(1)(-15)=64 > 0D=(−2)
2
−4(1)(−15)=64>0 roots are real
Which of the following pairs show two congruent triangles?
Answer:
B and C
Step-by-step explanation:
They're congruent
The sequence 18, 9, 9/2, 9/4, 9/8, ... represents the percentage of votes a particular political candidate has according to polls each day after a scandal. The sequence has a common
Answer:
r = 1/2Step-by-step explanation:
Given sequence:
18, 9, 9/2, 9/4, 9/8, ...We can see this is a GP and its common ratio is:
r = 9/8 ÷ 9/4 = 9/4 ÷ 9/2 = 9/2 ÷ 9 = 9 ÷ 18 = 1/2Common ratio
9/18=1/29/2/9=1/29/4/9/2=1/2Common ratio is 1/2
I will mark Brainliest just help meee
Answer:
h
Step-by-step explanation:
Answer:
G
Step-by-step explanation:
Function G
in the formula
y=mx+b
B is also a way to find the y intercept
in function G the y-intercept is 6
and in the graph the y-intercept is 4
6 is greater than 4 so
Function G is larger
What is the value of x? NEDD HELP ASP
A x=15
B x=30
C x=37.5
D x=52.5
Answer:
The value of x is 15 .
Option (A) is correct.
Step-by-step explanation:
As given
∠1 and ∠2 are complementary.
i.e the sum of ∠1 and ∠2 is 90° .
Thus
∠1 + ∠2 = 90°
x° + (3x+30)° = 90°
x + 3x + 30 = 90
4x = 90-30
4x = 60
x = \frac{60}{4}x=
4
60
x = 15
Therefore the value of x is 15 .
Option (A) is correct.
Answer:
A. x=15
Step-by-step explanation:
To solve this problem, we can combine like terms.
3x + (1)x are like terms.
3x + (1)x = 4x.
Since 3x and (1)x are the only pair of like terms, we are done with this step.
Complementary angles have a sum of 90°.
4x + 30 = 90.
Next, we subtract 30 from 90.
90 - 30 = 60.
Then, we divide 60 from 4.
60 / 4 = 15.
15 is the final answer.
Therefore, the value of x is 15.
what expression is equivalent to 3(7x-z+5)
Intro to Rotations
If P = (4,7),
Find: r190°(P)
([?], [])
Exam-please don’t answer if you don’t know thank you !
Answer:
p(9,7)⇒(-7,4)
Step-by-step explanation:
p(4,7)
(x,y) ⇒(-y,x)
p(4,7)⇒p¹(-7,4)
Answer:(-7,4)
hope it helps....
1/Secx-tanx -1/secs+tanx
Need help really bad
It’s the second one
Answer:
Explanation down
Step-by-step explanation:
115 divided by 356................
Answer:
0.32
:)
brainliest greatly appretiated
Which of the equations below has no solution?
Can someone answer this fast??
Answer:
(x, y) --( 3/2x, 3/2y)
Step-by-step explanation:
CAN IN THIS APP HELPS ME I POSTED THE QUESTION 4 TIMES LOST ALL MY POINTS PLEASE Help please help me
Answer:
i am not certain but i think i am correct
LA- 131.88
SA- 188.4
V- 197.82
Step-by-step explanation:
LA-
2×3.14= 6.28
6.28×3= 18.84
18.84×7= 131.88
SA-
2×3.14= 6.28
6.28×3= 18.84
18.84×7= 131.88
2×3.14= 6.28
6.28×3= 18.84
18.84×3= 56.52
56.52+131.88= 188.4
V-
3.14×3= 9.42
9.42×3= 28.26
28.26×7= 197.82
as i said i am not sure if this is right
What is 2 1/2 x 5 as a fraction and how
Answer:
12.5
Step-by-step explanation:
2 1/2 or 2.5 (in decimal form) times 5 equals 12.5
By multiplication of numbers, The solution of the expression 2 1/2 × 5 in form of a fraction is,
⇒ 2 1/2 × 5 = 25 / 2
What is mean by Multiplication?The multiplication of numbers means to add or sum a number to itself a particular number of times. And, The Multiplication can be viewed as a process of repeated addition.
We have to given that;
The expression of the multiplication is,
⇒ 2 1/2 × 5
Now, We can multiply the numbers as;
Here, The expression of the multiplication is,
⇒ 2 1/2 × 5
Change into improper form;
⇒ 5/2 × 5
⇒ 5 x 5 / 2
After multiply the numbers as;
⇒ 25 / 2
Therefore, By multiplication of numbers, The solution of the expression 2 1/2 × 5 in form of a fraction is written as,
⇒ 2 1/2 × 5 = 25 / 2
Learn more about the multiplication visit:
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The radius of a circle is 15 cm, what is the area of this circle?
Answer:
706.86
Step-by-step explanation:
have a good day! :D
On Sunday the temperature was 5 degrees lower on Saturday. What was the temperature on Sunday?
-2
........................
What is the Y-intercept of the simplified equation??
Answer: -7
Step-by-step explanation: y+3x=8x-7
subtract 3x from both sides y=5x-7
y=Mx+b
b=-7
What is the answer to this question
no links or files or ima report you and i mean it
Answer: Links and files
What is the value of y in 3y + 9 = 45
Y=12, this is just a guess. Sorry if its wrong.
What Fractions are equal to one half?
Answer:
2/4 4/8 8/16 16/32
Step-by-step explanation:
Answer:
1/2
2/4
3/6
4/8
5/10
6/12
10/20
50/100
100/200
what is the total price of a book if barnes and nobles gets it for 4.25 and the markup is 30% How much do they sell the book for?
Answer:
$5.53 i think
Step-by-step explanation:
30% = 0.3
0.3 x 4.25 = 1.275
1.275 + 4.25 ≈ 5.53
Answer:
5.25
Step-by-step explanation:
I really need help!!! Thank you!
Answer:
it's A, multiply and see, you get the same answer as in the question
Step-by-step explanation:
Write the number in 2 equivalent forms as a fraction, decimal, or percent.
15
16
What is the equivalent decimal?
Answer:
15= 0.15 15% 16=0.16 1 6/100
Step-by-step explanation:
I need some help on this, I do NOT get it lol
Answer:
Logarithmic
Step-by-step explanation:
It's literally a logarithmic function because it includes "log" which is short for logarithmic.
Combine like terms. Which Pokemon has the correct answer?
-17x + 13x = ?
Answer:
-4x
Step-by-step explanation:
You add -17x and 13x and you get -4x.
Find the distance between the points (1,0) and (2,-2)
Distance = ?
please help!!!!
Answer:
√5
Step-by-step explanation:
use distance formula
PLEASE HELP NO LINKS OR FILES
Answer:
it's 6
Step-by-step explanation:
3 * 2 is 6
hope I get brainiest
Answer:
7 and 8
Step-by-step explanation:
1/2(x) > 3
1/2(x) = 3
x = 6
x>6
x=7, x=8
At a tournament, the bowling league is providing 160 sandwiches for its members.
The table shows the number of different types of sandwiches that were ordered.
The ratio of turkey sandwiches to roast beef sandwiches is 5:3.
Drag the numbers to complete the table.
Turkey: 80
Roast beef: ?
Vegetarian: ?
The number of beef sandwich is 48 and vegetarian sandwich is 32.
What are word problems?A word problem is a few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
Given that, total number of sandwiches = 160, ratio of turkey sandwiches to roast beef sandwiches = 5:3. Number of turkey sandwiches = 80
Let the number of turkey sandwich and that of roasted beef sandwich be 5x and 3x respectively,
5x = 80
x = 16
Therefore, number of roasted beef sandwiches = 16 × 3 = 48
Total number of turkey sandwich and beef sandwich = 48 + 80 = 128
The number of vegetarian sandwich = 160 - 128 = 32
Hence, the number of beef sandwich is 48 and vegetarian sandwich is 32.
Learn more about words problems, click;
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Pls solve will give brainlest
Answer:
x=65
Step-by-step explanation:
That is the answer.
An arc has a central angle of 2/5 pi and a length of 6 pi. What is the circumference of the circle?
Answer:
15 pi.
Step-by-step explanation:
2/5=6/x
x=15
This is how I would answer it, but there is an error with the question. The measure of the central angle of an arc is supposed to be equal to the length of the arc.
Please help I’m so stressed over this ok here it is it cost $12.50 to enter an amusement park and $1.50 to play each game. Solve an inequality to find the number of games, g, Cole can play if he has $35 to spend at the park. Enter your answer in the box.
