Answer:
if u answer my question i will answer yours
Step-by-step explanation:
2x^2 - 5x + k = 0
If this has one solution then the discriminant = 0
So
(-5)^2 - 4 (2) k = 0
25 - 8k = 0
25 = 8k
25/8 = k
Please help!!! i attached the problem.
Answer:
y>7.5
line under inequality sign.
Step-by-step explanation:
What is the constant rate of change in the function y=5x?
1/5
x
5
1
Answer:
5
Step-by-step explanation:
The rate of change is the slope
y = 5x
The slope is the constant in front of the x
The constant rate of change is 5
Sarah solved this system of equations. 4x + 2y = –14 –10x - 7y = –25 Step 1: 40x + 20y = –140 –40x - 28y = 100 Step 2: –8y = –40 Step 3: y = 5 Step 4: 4x + 2(5) = –14 Step 5: x = –6 Step 6: Solution: (–6, 5) Did Sara find the correct solution to the system of equations? Explain. Yes, Sara found the correct solution. No, in step 1 she multiplied the right side of the second equation by –4 instead of by 4. No, in step 4, she substituted the value of y back into the wrong equation to solve for x. No, in step 6, she switched the order of the solution. It should be (5, –6).
Answer:
The answer is B "No, in step 1 she multiplied the right side of the second equation by -4 instead of by 4"
Step-by-step explanation:
Answer:
A) Yes, Sara found the correct solution.
B) No, in step 1 she multiplied the right side of the second equation by –4 instead of by 4.
C)No, in step 4, she substituted the value of y back into the wrong equation to solve for x.
D)No, in step 6, she switched the order of the solution. It should be (5, –6).
Answer = B) No, in step 1 she multiplied the right side of the second equation by –4 instead of by 4.
Step-by-step explanation:
I just did the assignment.
Find the difference. Write your answer in standard form.
(5x3−3x+6)−(2x2−4x+8)
The difference is _______
Answer: 5x^3 + x-6
Step-by-step explanation:
store is having a sale on almonds and Jelly beans. For 5 pounds of almonds and 3 pounds of jelly beans, the total cost is $20. For 7 pounds of almonds and 9
pounds of jelly beans, the total cost is $46. Find the cost for each pound of almonds and each pound of jelly beans.
48:11
Which graphed matches the equation + 6 =
- «+4)?
Answer:
Where are the graphs at
Step-by-step explanation:
cant explain without graphs
PLEASE HELP I WILL MARK BRAINLIEST
Right to expressions that are equivalent to the expression below.
(9-c) + (9-c) + (9-c) + (9-c)
Answer:
36-4c
plz mark brainliest
An oil tank in the shape of a cylinder has a diameter of 40 feet and a height of 32 feet. Which expression can be used to find the volume of the oil tank? Recall the formula V = pi r squared h.
(20) squared (32)
Pi (20) squared (32)
Pi (32) squared (20)
Pi (40) squared (32)
Answer:
Pi (20) squared (32)
Answer:
2080 20(2)=400.20x32x2=1280.400+1280=2080
BAM
Step-by-step explanation:
JK, it B
the height of a kicked soccer ball is represented by the function f(x)=8x-2x^2 where x is the number of seconds since the ball was iicked and f(x) is the height of the ball. when will the soccer ball hit the ground?
Answer:
Result at time x = 4 seconds the soccer ball hit the ground.
Step-by-step explanation:
At the moment just before the ball is kicked, it is on the ground and so the height f(x) is zero meters. After the kick, the ball goes through the air and it's path can be described by a (mountain) parabola.
So lets see after how many second (x) the height = 0 once again.
f(x) = 8x-2x^2
f(x) = 0
8x - 2x^2 = 0
Try to write the formula in two terms
-2x * (x - 4) = 0
When a product of two or more terms equals zero, then at least one of the terms must be zero.
Now solve each term = 0 separately, meaning, solve as many equations as there are terms in the product.
Any solution of term = 0 solves product = 0.
Solve the first term:
-2x = 0
Multiply left an right from the = singn with the factor -1 gives this outcome:
2x = 0
x = 0
Solve the second term:
x-4 = 0
x = 4
Result at time x = 4 seconds the soccer ball hit the ground.
x = 4
x = 0
Kates Family Saved 2,573 pennies Last Year zoes Family Saved 3 times as many how many pennies did Zoes faily save last year
Complete the equation to represent finding x, the greater integer.
x(x – ) = 143
Answer:
x would equal -11 or 13
Step-by-step Explanation:
x(x - 2) - 143 = 0
x^2 - 2x - 143 = 0
-2x + x^2 = 143
-143 + (-2x) + x^2 = 0
(x - 13)(x + 11)
x - 13 = 0
Add 13 to both sides
x = 13
x + 11 = 0
Subtract 11 from both sides
x = -11
The label that wraps around a a can is 4 inches long. How wide is the can?
1.273 is the answer
bc the label is circumference and the width would be diameter
so circumference divided by pi is diameter
so 4 ÷ 3.14 = 1.273
Complete the sentence.
Twenty-seven is
a0% of 60.
Answer:
45%
Step-by-step explanation:
Let P = be the unknown percent
is means equals and of means multiply
27 = P * 60
Divide each side by 60
27/60 = P60/60
.45 = P
Change to percent form
45% = P
Answer:
Its 45
Step-by-step explanation:
27/60 */100
Cross multiply
27x100
2700
2700/60
=45%
Jay borrows $8,000 at a rate of 1.9% interest per year. What is the amount due at the end of 6 years if the interest is compounded continuously?
$8,965.21
$10,027.21
$8,966.02
$25,014.15
Students were asked how many pairs of shoes they owned. Their responses were 8, 2, 1, 5, 7, 6, 2, 2, 8, and 3.
The mean of the data is?
4.4
The median of the data is?
4
The mode of the data is?
2
The range of the data is?
Answer:
mean is 4.4
median is 4
mode is 2
range is 7
Step-by-step explanation:
Do the points shown represent additive inverses? Explain why or why not.
A number line going from negative 5 to positive 5. Points are at negative 3 and positive 3.
Answer:
Yes.
Step-by-step explanation:
W
The additive is what you add to a number to get zero.
The negative of a number.
Example:
The additive inverse of −5 is +5, because −5 + 5 = 0
The additive inverse of +5 is −5, because +5 − 5 = 0
Additive inverses are negated numbers.
The points on the number line are additive inverses.
For a number x, the additive inverse is -x.
The first point on the number line is:
[tex]\mathbf{x = 3}[/tex]
Negate both sides
[tex]\mathbf{-x = -3}[/tex]
-3 represents the additive inverse of 3.
Hence, the points on the number line are additive inverses.
Read more about additive inverses at:
https://brainly.com/question/13715269
Use the population data set of the price, in dollars, of a milkshake at five different restaurants: 2, 4, 6, 9, 14.
The mean is 7.
Which of the following is the approximate standard deviation for the set?
Answer:
The standard deviation of the set is 4.2
Step-by-step explanation:
The standard deviation (sd) for the set is calculated as follows:
sd² = [(x1 - mean)² + (x2 - mean)² + ... ]/N
where x1, x2, et cetera are the values in the set and N is the number of elements in the set. Replacing with data:
sd² = [(2 - 7)² + (4 - 7)² + (6 - 7)² + (9 - 7)² + (14 - 7)²]/5
sd = √17.6
sd = 4.2
One endpoint of a line segment is (–6, 4), and the midpoint of the segment is (–2, 7). What are the coordinates of the other endpoint?
A. (2, 10)
B. (−10, 1)
C. (3, 11)
D. (−10, 18)
Answer:
A. (2, 10)
Step-by-step explanation:
If there are two points (x1,y1) and (x2,y2) on a coordinates plane then
coordinates of the midpoint is given by (x1+x2)/2, (y1+y2)/2
__________________________________________________
Given
one endpoint is (–6, 4) and midpoint is (–2, 7)
let coordinates of other endpoint be (x,y)
now if one endpoint is (–6, 4) and other endpoint is (x,y)
then coordinates of midpoint is ((-6+x)/2 , (4+y)/2)
while the coordinates of midpoint given is (–2, 7)
thus (–2, 7) should be equal to ((-6+x)/2 , (4+y)/2)
-2 = (-6+x)/2 and 7 = (4+y)/2
=> -2*2 = -6+x => 7*2 = 4+y
=> -4 = -6+x => 14 = 4+y
=> -4+6 = x => 14-4 = y
=> x = 2 => 10 = y
Thus, coordinates of the other endpoint is(2,10)
?? please help a dude out
Tis so easyAnswer:
1:> 2:< 3>
Step-by-step explanation:
Please help me.. it is about angles
Answer:
C
Step-by-step explanation:
Answer:
C. is the answer!! i didnt notice the full angle of A
Step-by-step explanation:
Enter the equation of the circle with the given center and radius.
Center: (0,3); radius: 3
The equation of the circle is
Answer:
x² + (y - 3)² = 9
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here (h, k) = (0, 3) and r = 3, thus
(x - 0)² + (y - 3)² = 3², that is
x² + (y - 3)² = 9 ← equation of circle
HELP ASAP FIRST CORRECT GETS BRAINLIEST
Answer:
Right
Step-by-step explanation:
Answer: the first one is x less than 468 and the second one is and open circle at 468 and the third one is go left
Step-by-step explanation:
it would be a open circle if it wasnt a line under it and it would move the oppisite which is the left
WHAT COULD BE THE AREA OF THE BASE OF THE TRIANGULAR PRISM?
Length 5ft
Other height5ft
Length 4ft
Height 3ft
Answer:
6ft^2
Step-by-step explanation:
A = 1/2 bh
A = 1/2 (4)(3)
A = 1/2 (12)
A = 6ft^2
Answer:The answer is A
Step-by-step explanation:
Got it right on the test ✅
Identify the expression as a perfect square trinomial, a difference of squares, or neither. Factor the expression.
4p2 + 32p + 64 The expression is________?
A. neither
B. a difference of square
C. a perfect squares trinomial
The factored expression is______?
Answer:
C, factored is either 4(p + 4)^2 or (2p + 8)^2
Step-by-step explanation:
4(p^2 + 8p + 16)
4(p + 4)(p + 4)
4(p + 4)^2
OR
(4p^2 + 32p + 64)
(2p + 8)(2p + 8)
(2p + 8)^2
A company is hosting an event for its employees to celebrate the end of the year. It asks the employees whether they prefer a lunch event or a dinner event. It also asks whether they prefer a catered event or a potluck. The results are shown in the two-way table.
Answer:
dinner potluck
Step-by-step explanation:
tis a great meal for all them vikings
Surface area of a cylinder radius is 2 and height is 3
Answer:
62.83 cm squared
Step-by-step explanation:
A = 2πrh+2πr^2
A = 2π(2)(3)+2π(2)^2
A = 2π(6)+2π4
A = 12π+8π
A = 20π
A = 20(3.14)
A = 62.83 cm squared
Help me please I really need help
Answer: Find the area of all figures and then add it together
Step-by-step explanation:
One circle has a circumference of 12cm. Another circle has a circumference of 32cm. What is the ratio of the radius of the smaller circle to the radius of the larger circle? 3:8 8:3 1:3 3:1
Answer: did u get the answer for this
Step-by-step explanation:
Which could be the area of a face of the rectangular prism?
A rectangular prism with a length of 3 meters, width of 4 meters, and height of 2 meters.
5 m2
6 m2
7 m2
9 m2
Answer:
[tex]6m^{2}[/tex]
Step-by-step explanation:
well we are looking for a face of the rectangular prism.
the front face of the rectangular prism is length times height
which is 3 times 2 = [tex]6^{2}[/tex]
if we did any other face, like the side which is width times height ( 8 meters) it is not one of the answers.
so the only face that can be answers is length times height.
therefore the answer is
6m^2
i rly hope this helps!! :)
Answer:
the answer is B .
Step-by-step explanation:
What’s the missing leg length
Answer:
a = 80
Step-by-step explanation:
This is a right triangle so we can use the Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
a^2 + 60^2 = 100 ^2
a^2 +3600=10000
Subtract 3600 from each side
a^2 = 10000-3600
a^2 =6400
Take the square root of each side
a = sqrt(6400)
a = 80
