Answer:
8
Hope this helps!
The discriminant of the given quadratic equation is 8.
What is the discriminant of a quadratic equation?The discriminant determines the type and number of solutions that the equation has.
If the discriminant is positive, the equation has two distinct real solutions. If the discriminant is zero, the equation has one repeated real solution. If the discriminant is negative, the equation has no real solutions.
Given is a quadratic equation -x²+4x-2 = 0, we need to find the discriminant of the quadratic equation,
So,
D = b²-4ac
Here,
a = -1, b = 4 and c = -2
Therefore,
D = 4² - 4(-1)(-2)
D = 16 - 8
D = 8
Hence, the discriminant of the given quadratic equation is 8.
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The area of a square field is 42025 m square. Find the perimeter of the field. Can you explain and say it answer both pls
Answer:
Step-by-step explanation:
Answer:
820 m
Step-by-step explanation:
given:
The area of a square field is 42025 m square.
Find:
perimeter of the field.
solution:
Area of square = s² where s = side of square; A = 42,025 m²
plug in values into the formula:
[tex]\sqrt{42,025}[/tex] = s² ------square root
s = 205 m ---------length of each side of a square
solve for Perimeter:
Perimeter = 4 times the sides
= 4 x 205m
= 820 m
therefore, the perimeter of a square field is 820 m
AB = 6x + 2 and
BC = 5x + 3
Find AC.
Answer:
AC = 3x + 3 (answers may vary)
Step-by-step explanation:
AB = 6x + 2
Answers may vary for this question,
Let's say that,
B = 4x + 1
So that means that,
A = 2x + 1
BC = 5x + 3
Since we chose
B = 4x + 1,
we must subtract B from BC to get C,
C = x + 2
Now we add A and C to get AC,
A = 2x + 1
C = x + 2
AC = 3x + 3
Find the area of the rectangle. 8 cm 16 cm
Answer:
128 cm^2
Step-by-step explanation:
The area of a rectangle is given by
A = l*w
A= 8*16
128 cm^2
Solve this inequality: 4.2x+5.6<7.2-8.3x please give the steps.
Answer:
[tex]x<\frac{16}{125}[/tex]
Step-by-step explanation:
First we will multiply everything by 10 to get rid of the decimals.
[tex]4.2x*10+5.6*10<7.2*10-8.3x*10\\42x+56<72-83x[/tex]
Subtract 56 from both sides:
[tex]42x+56-56<72-83x-56\\42x<-83x+16[/tex]
Add 83x to both sides:
[tex]42x+83x<-83x+16+83x\\125x<16[/tex]
Divide both sides by 125:
[tex]\frac{125x}{125}<\frac{16}{125}\\x<\frac{16}{125}[/tex]
Answer:
I'm terrible at explaining things but here's a screenshot
- Ripper
Step-by-step explanation:
Ashley's parents pay her for grades on her report card. They pay $10.00 for each A, $5.00 for each B, and $1.00 for each C. Ashley does not earn money for any grade lower than a C. If she made 4 A's, 3 B's, and 1 C on her latest report card, how much money did she earn?
Answer:
$56
Step-by-step explanation:
4(10)+3(5)+1(1)
40+15+1 = 56
4(1\4 x +7)=2x-2
i need help! do anybody know this?
Answer:
28 = 2 x - 2
Step-by-step explanation:
True or false if false give a counter example the product of odd numbers is always odd
Answer:
TRUE
Step-by-step explanation:
EXAMPLE : 3×5=15
27×5= 135
Answer:
Truefo example: 3•3 = 9 (=2•4+1) 5•7 = 35 (=2•17+1) 11•13 = 143 (=2•71+1)Step-by-step explanation:
If k is any integer then 2k is even number and 2k+1 is odd number
If n is any other integer then 2n+1 is also some odd number
Their product:
(2k + 1)(2n + 1) = 2k•2n + 2•1k + 1•2n + 1•1 = 2(2kn + k + n) + 1
k,n are integers so 2kn also is integer.
Sum of integers is integer too, so if we name 2kn+k+n = z, then product of any two odd integers is 2z+1 which is an odd number.
what number multiplied by it's self give the product 576
Answer:
24
Step-by-step explanation:
576 root is 24
24^2= 576
___Hope it helps___
Answer:
24
Step-by-step explanation:
The square root of 576 is 24.
24×24=576
Liliana noted that the temperature was 45 degrees when she woke up. At noon she started recording the increase in degrees from the morning temperature.
A histogram titled Temperature has time of day on the x-axis and increase in degrees on the y-axis. 12 to 2 pm is 12 degrees; 2 to 4 pm is 18; 4 to 6 pm is 24; 6 to 8 pm is 20; 8 to 10 pm is 14; 10 to 12 am is 5.
Which statement most reasonably explains the hours after the peak increase in temperature?
The temperature always rises after a peak.
The temperature increase went down because the thermometer’s battery was losing power.
The temperature increase went down because it became cooler as the sun went down for the night.
The temperature rose after the peak when the sun came out from behind a cloud bank.
Answer: C
Step-by-step explanation:
The temperature increase went down because it became cooler as the sun went down for the night.
Help 10 points 30 minutes to answer
Answer:
The first answer choice.
Answer choice A.
Step-by-step explanation:
The domain of a function would be the set of all possible x-values of that function.
Since we are looking for the domain, the set of the possible x-values, we can eliminate any answer choices that are a set of y-values. B and D are eliminated.
From what we can see in the table, the possible x-values of the function are -6, -1, 0 and 3. Although C does include these values in the set, it also includes many other values. As we can see, answer choice A includes the x-values given in the table and only those values. Therefore, answer choice A is the correct answer.
I hope you find my answer and explanation helpful. Happy studying.
Helppp me!!!!
At least try.
13 points
Which transformation can be applied to the blue figure to create the red figure? Photo above
Which are correct representations of the inequality 6x ≥ 3 + 4(2x – 1)? Select three options.
Answer:
hope it helps
plz mark as brainliest
Answer:
it a, b and, c :)
Step-by-step explanation:
y=9x^2+12x+4 need to solve by factoring ASAP
Answer:
2121
Step-by-step explanation:
PLEASE HELP ME ASAP!! I really need help! Thank you
Answer:
add them all and put them equal to 180 cause all interiors angles of a triangle adds up to 180.
Step-by-step explanation:
x^2+6x+68=180
x^2+6x-112=0
(x-8)(x+14)
x=8
x^2+1=65
2x+24=40
4x+43=75
hence x^2+1 is your answer
Which graph represents a function?
Answer:
the last one
Step-by-step explanation:
use the horizontal line test to find out if its a function
for more information Google horizontal line test
hope this helps :)
Answer:
The last option (The line going straight left to right)
Step-by-step explanation:
For a graph to represent a function, the line must pass the vertical line test.
I've attached an image to look at how the vertical line test works.
Use the graph to answer the question.
The line graph shows tuition amounts for a university for the years 1996 through 1999. Which of the
following is a valid claim based on the graph?
A Tuition rates have increased faster than inflation.
O
B. The tuition has increased steadily over this time span.
O
C. Tuition increased twice as much from 1997 to 1998 as it did from 1996 to 1997.
D. The rate of tuition inflation will decrease in the next 5 years.
Answer:
B.
Step-by-step explanation:
hope it helps :)
Please help on this!
How many solutions are in the following problems?
6x + 4x - 6 = 24 + 9x
25 - 4x = 15 - 3x + 10 - x
4x + 8 = 2x + 7 + 2x - 20
Answer:
Step-by-step explanation: Only one solution
To solve this, first combine like terms.
6x + 4x - 6 = 24 + 9x
10x - 6 = 24 + 9x
Then move all like terms to one side.
10x - 9x = 24 + 6
x = 30
Two submarines are underwater. The number -4,845 represents Submarine A's position (in feet) relative to the surface. The number -5,161 represents Submarine B's position (in feet) relative to the surface. Which submarine is closer to the surface? a Submarine A is closer to the surface. b Submarine B is closer to the surface. c Both submarines are at an equal distance away from the surface.
Answer
a
Step-by-step explanation:
because submarine b has a bigger negative number so its more further down
2-yard piece of ribbon costs $1.26. What is the price per foot?
1 yard = 3 feet
3ft * 2 yards = 6 feet
$1.26 / 6ft = $0.21 / ft
Brainliest question!!!AABC transforms to produce AAB C. Which transformation did NOT take place???
Hey there!! Glad I can help!!!
Answer:
Dilation
Step-by-step explanation:
A Dilation didn't take place. They are of the same size.
If satisfied please leave a review and feel free to give brainiest.
Find the 7th term in the sequence: 1/3, 1, 3, 9, . . .
Answer:
243
Step-by-step explanation:
1. 1/3 * 3 = 1
2. 1 * 3 = 3'
3. 3*3 = 9
4. 9*3= 27
5. 27*3 = 81
6. 81*3 = 243
7. 243
Hope this helps!
The required 7th term in the given geometric sequence would be 243.
What is geometric series?The geometric series defined as a series represents the sum of the terms in a finite or infinite geometric sequence. The successive terms in this series share a common ratio.
The sequence given in the question follows as:
1/3, 1, 3, 9, . . .
This sequence follows the pattern of a geometric progression, where each term is obtained by multiplying the previous term by a fixed number, called the common ratio.
The common ratio for this sequence is 3.
To find the nth term in a geometric progression, you can use the formula:
aₙ = arⁿ⁻¹
Where a is the first term, r is the common ratio
Plugging in the values for this sequence, we have:
[tex]a_7 = 1/3 \times 3^(7-1) = 1/3 \times 3^6[/tex]
= 1/3 x 729 = 729/3 = 243
Therefore, the 7th term in the sequence is 243.
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Jack is going to an amusement park. The price of admission into the park is $40, and once he is inside the park, he will have to pay $5 for every ride he rides on. How much money would Jack have to pay in total if he goes on 14 rides? How much would he have to pay if he goes on rr rides? cost for 14 rides: cost for r rides:
Step-by-step explanation:
for 14 rides its 70 so you already don't have enough
Answer: cost for 14 rides: 110
Cost for r rides:14+5r
please help!!
89-11v_<7v-55
Answer:
v ≤ 8
Step-by-step explanation:
89-11v≤7v-55
-11v-7v≤ -55-89
-18v ≤ -144
divide Both sides by -18
-18v/-18 ≤ -144/-18
v ≤ 8
is 9.465 an irrational number
Answer:
yes is a 9.465 an irrational number
Step-by-step explanation:
Help! I can't figure this out! Is the function tan t positive or negative in Quadrant IV?
Answer:
Negative
Step-by-step explanation:
What is the division rule for 2?
Answer:
The Rule for 2 : Any whole number that ends in 0, 2, 4, 6, or 8 will be divisible by 2. This is the number four hundred fifty-six thousand, seven hundred ninety-one, eight hundred twenty-four. We can tell if 2 divides into this number without a remainder by just looking at the last digit.
Step-by-step explanation:
Mr. Hernandez has 41 feet of rope to enclose a pentagonal grazing area for his sheep. Sides of the pen are represented by: x, 7 - 5x, 3x - 2, 3x + 4, 5-3x. Which inequality could be used to find the possible perimeters of the grazing area?
Answer:
Option (B)
Step-by-step explanation:
Length of the rope Mr Hernandez has = 41 feet
He wants to enclose an area in the shape of a pentagon.
Therefore, minimum length of the rope required = perimeter of the pen
Perimeter of the pentagonal pen = Sum of the measures of all five sides of the pen
Perimeter = x + (7 - 5x) + (3x - 2) + (3x + 4) + (5 - 3x)
= (-x + 14)
Now the length of the rope should be more than and equal to the perimeter of the pen to cover.
41 ≥ (-x + 14)
Or
-x + 14 ≤ 41
Therefore, Option (B) will be the answer.
Do American teens like ice cream sundaes? A researcher is conducting surveys in the United
States to answer that question for the Dairy Farmers of America. The researcher is
surveying a portion of American teens to determine the answer to the question. This is an
example of a(n).
O A. census
B. simulation
C. experiment
O D. sample
Find the product of 28 and 4. ONLY type in the number.
Answer: 112
Step-by-step explanation:
solve for x 3.7x-.20x=17.5
Step-by-step explanation:
3.7x - 0.20x = 17.5
3.5x = 17.5
x = 17.5/3.5
x = 5
Answer:
x=5
Step-by-step explanation:
