Answer:
16
Step-by-step explanation:
Sorry If its hard to read but it's worth a lot of points!
A portion of the Quadratic Formula proof is shown. Fill in the missing statement.
Statements Reasons
x squared plus b over a times x plus the quantity b over 2 times a squared equals negative 4 times a times c all over 4 times a squared plus b squared over 4 a squared Find a common denominator on the right side of the equation x squared plus b over a times x plus the quantity b over 2 times a squared equals b squared minus 4 times a times c all over 4 times a squared | Add the fractions together on the right side of the equation the quantity x plus b over 2 times a squared equals b squared minus 4 times a times c all over 4 times a squared | Rewrite the perfect square trinomial on the left side of the equation as a binomial squared ? Take the square root of both sides of the equation
Answer:
Take the square root of each side
D (x+b/2a) =±sqrt( (b^2-4ac)/ 4a^2)
Step-by-step explanation:
We have
(x+b/2a) ^2 = (b^2-4ac)/ 4a^2
We need to take the square root of each side to continue to isolate x
(x+b/2a) =±sqrt( (b^2-4ac)/ 4a^2)
I hope thats right
29.Consider the diagram below. Solve for x.
Answer:
104
Step-by-step explanation:
104 is parallel to x meaning it would stay as 104 (this is what my school tought me sorry if its incorrect)
(47^2 - 46^2) / (17^2 - 14^2)
Answer:
1
Step-by-step explanation:
47^2=2209
46^2=2116
2209-2116=93
17^2=289
14^2=196
289-196=93
93÷93=1
Have a good day
Answer:
1
Step-by-step explanation:
Hello!
We can solve this by using the Difference of Squares formula:
(a + b)(a - b) = a² - b²47² - 46², the numerator, is very similar to a² - b², so we can extract 47 as a, and 46 as b.
Rewrite the numerator:
47² - 46²(47 + 46)(47 - 46)(93)(1)93We can use the same formula for the denominator the same way:
17² - 14²(17 + 14)(17 - 14)(31)(3)93Rewrite the fraction and simplify:
[tex]\frac{93}{93}[/tex][tex]\frac11[/tex]1The answer is 1.
C D Moody is an award-winning, Black-owned construction company in Lithonia, Georgia.
TaShauna contracted the company to build a porch in her front yard. The total area of her front
the yard is 4x^2+ 3x − 10. What is the total area of the porch, if the area surrounding the porch is 3x^2 − 20?
Please help!!!! At a gymnastics meet, a gymnast scored an 8.95 on the vault and a 9.2 on uneven bars. Write two equivalent expressions that could be used to find her total score. NO LINKSSSSSSSSSSSSSSSSSSSSSSSSSSS
Answer:
8.95 + 9.2 = 18.15
9.2 + 8.95 = 18.15
Step-by-step explanation:
8.95 + 9.2 = 18.15
9.2 + 8.95 = 18.15
NO LIKS
How are a pyramid and a cone similar?
They both have one base.
They both have polygon bases.
They both have vertices.
They both have lateral faces.
Answer:
They both have one base
Answer:
A is answer
Step-by-step explanation:
The Lunchroom Murder
On an otherwise uneventful Thursday afternoon police heard a shot inside the local bistro, Ernie’s Lunchroom. They rushed in and found the scene shown in Figure 1.4.
They identified the body as that of a prominent racketeer named Fannin. Ernie, who is both the owner and only employee, had only one fact to tell: the murderer had leaned against the wall while firing at point-blank range. The imprint of his hand is in clear view.
The police have also noticed that the cash register had just been rung up at $8.75.
This is a difficult case. Your investigative team must attempt to determine which of the people in the lunchroom killed Fannin. You will have to observe the details carefully. There is enough evidence to help you explain most of what happened.
QUESTION: Which set of footprints are Ernie’s? What is the evidence?
Answer:
1 and 3
Step-by-step explanation:
please help with these questions please
Answer:
7. adjacent
8.127°
Step-by-step explanation:
adjacent angles on a straight line add up to 180°
180-53=127°
Answer:
they are supplementary
x = 127
Step-by-step explanation:
supplementary angles equal 180 degrees so you would do: 180 - 53 to find x
There are 80 students in the sixth grade at Baker Street School, and 50% of thern take notes with a pencil sixth-grade students who take notes with a pencil.
how many sixth grade students take notes with a pencil?
I think the answer would be 40
Answer: Hello, There! your Answer is Below
40 Is your Answer
Step-by-step explanation:
Step 1: Our output value is 80.
Step 2: We represent the unknown value with XStep 3:
From step 1 above,$80=100
Step 4: Similarly, x=50
Step 5: This results in a pair of simple equations:This results in a pair of simple equations:
$80=100\(1)
$x=50(2)
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
80/x = 100%/50%
Step 7: Again, the reciprocal of both sides gives
x/80 = 50/100
x=40$
Therefore, 50%of 80i s 40
2. Compare the dot plots by answering the following questions.
How does the spread compare between the two dot plots?
How do the medians compare between the two dot plots?
Describe the distribution of the data on each dot plot.
Answer:
i tried
Step-by-step explanation:
1. Plot A has a longer range than Plot B
2. The median for Plot B is 22 and for Plot A it's 22.5, making Plot A with the larger median
3. i have no idea
What do you know about the lengths of the sides of a horizontal cross-section of a pyramid?
A. They are equal in length to the sides of the base.
PLZ HELP
40 POINTS!!
B. They are less than the lengths of the sides of the base.
C. They have the same ratio as the lengths of the sides of the base.
D. They are greater than the lengths of the sides of the base.
Answer:
A: they are equal in length to the sides of the base
Step-by-step explanation:
Which choice is equal to 2.5
Shiloh is doing a survey to find the time her classmates spend at the beach. She asks the following question:
Which student spends the most time at the beach?
Part A: Describe the data you would expect her to collect from this question.
Part B: Explain whether this is a statistical question. If this is not a statistical question, then modify the question to make it statistical.
Answer: it is a statistical question
Step-by-step explanation:
Answer:
read the explanation.
Step-by-step explanation:
Part A:
I would expect her to collect a certain number of times, such as: each dot = 1 hour. For example, if she had a dot plot or a chart to divide how much time each student stays at the beach (if that is understandable), along with her collecting the students' names to figure out the answer to her question.
Part B:
This is definitely a statistical question.
A statistical question is a question that can be solved by collecting data that varies.
so this can definitely be solved by collecting data. To even solve this, you need to collect data. The easiest way to solve this is with a dot plot. In my opinion, you also need to gather the students data, such as their names and how many (for example) hours at the beach they spent time there.
Which side lengths represent the sides of a right triangle?
A) 1, 1, 2
B) 2,35
C)3,4,5
D) 5, 11, 13 10
Answer:
Hello There!
Step-by-step explanation:
Your answer will be B.
A rectangular prism has a volume of 912 cubic meters. It has a length of 19 meters and a width of 12 meters. Which equation could be solved to find the height of the rectangular prism?
A)114h = 912
B)228h = 912
C)15.5h = 912
D)31h = 912
Answer:
B. is the correct answer.
Thank you.
Step-by-step explanation:
A conveyor belt dumps gravel into conical piles. Kevin measured the height of one pile of gravel. It was 10 1/2
feet tall. The volume of the pile was 77 cubic feet. Find the diameter of the pile of gravel. Round the answer to the nearest hundredth.
Answer:
189
Step-by-step explanation:
What is the solution set for -4x-10 ≤ 2?
Answer:
x≥−3
Step-by-step explanation:
Let's solve your inequality step-by-step.
−4x−10≤2
Step 1: Add 10 to both sides.
−4x−10+10≤2+10
−4x≤12
Step 2: Divide both sides by -4.
−4x /−4 ≤ 12 /−4
= x≥−3
brainliest please?Answer:
x ≥ -3
Step-by-step explanation:
you add 10 on both sides
-4x - 10 ≤ 2
+10 +10
= -4x ≤ 12
then you divide -4 on both sides to get the x by itself
12/-4 is -3
since you divided by a negative you flip the sign
Find the shaded area of the figure shown, correct to one decimal place. Use the pi button on your calculator for pi in your calculations.
Answer:
204.2 square cm
Step-by-step explanation:
Area of the whole circle
PI x 9 squared =
PI x 81 = 254.4690...
Area whire circle
PI x 4 squared=
PI x 16 = 50.2654
Subtract white circle from the whole circle
254.4654 - 50.2654 = 204.2035...
The required area of the two concentric circles is given as 204.20 square cm.
Given that,
The shaded area of the figure shown, correct to one decimal place is to be determined.
The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.
Here,
According to the question,
Area of the shaded area = 3.14 [9]²- 3.14[4]²
Area of the shaded area = 204.20 square.
Thus, the required area of the two concentric circles is given as 204.20 square cm.
Learn more about the surface area here: https://brainly.com/question/2835293
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Using the following data, calculate the mean absolute deviation:
7 2 8 5 9 9 5 6 8 1
What is the mean absolute deviation for these data?
2.2
6
6.5
8
Answer:
2.2
Step-by-step explanation:
If you find the mean of the deviation, you get 2.2
The mean absolute deviation of the data is M = 2.2
What is Mean?The mean value in a set of numbers is the middle value, calculated by dividing the total of all the values by the number of values.
Mean = Sum of Values / Number of Values
Given data ,
Let the total number of points be n
Now , the value of n = 10
And , the number of points on each data is given by set A
Now , the value of set A = { 7 , 2 , 8 , 5 , 9 , 9 , 5 , 6 , 8 , 1 }
So , the total sum of data = 7 + 2 + 8 + 5 + 9 + 9 + 5 + 6 + 8 + 1
The total sum of data = 60
Now , the mean number of data points = 60/10 = 6
And , the mean deviation is M
M = 1/10 | [ ( 7 - 6 ) + ( 2 - 6 ) + ( 8 - 6 ) + ( 5 - 6 ) + | ( 9 - 6 ) | + ( 9 - 6 ) + ( 5 - 6 ) + ( 6 - 6 ) + ( 8 - 6 ) + ( 1 - 6 ) |
M = ( 1/10 ) [ 1 + 4 + 2 + 1 + 3 + 3 + 1 + 0 + 2 + 5 ]
M = ( 1/10 ) [ 22 ]
M = 2.2
Therefore , the value of M is 2.2
Hence , the mean deviation is 2.2
To learn more about mean click :
https://brainly.com/question/15526777
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Find the value of x in the figure shown.
plz i beg help i will give 20 points and brianlist
35. Which side of the triangle in the diagram is the hypotenuse?
A. X
B. Z
C. C
Answer:
the answer in the image is Y
38. Calculate the value of c in the triangle below.
Answer:
15
Step-by-step explanation:
a^2 + b^2 = c^2
9^2 + 12^2 = 225
[tex] \sqrt{225} = 15[/tex]
Hope this helps!!
Jeffrey is reading a book by his favorite author. He expects to read 40% to 55% of the book in one week. The book has a total of 450 pages. Which could be the number of pages he expects to read in one week?
A 170
B 175
C 220
D 250
Select the correct answer from each drop-down menu.
For this data set, the best measure of center is the
, and its value is
.
There are 12 students in the gym class. If 4 students can sit on 1 bench, how
many benches are needed for all the students?
(NO LINKS OR FILES!)
please help im not understanding please check this before skippping over it
Answer:
36degrees
Step-by-step explanation:
2x + 26 = 3x + 21
2x - 3x = 21 - 26
-x = -5
x = 5
m<B = (3x+21)°
m<B = 3(5) + 21
m<B = 15+21
m<B = 36degrees
What doesr2mean?
Group of answer choices
r×r
2r
r2
Answer:
r2 means r x r
Step-by-step explanation:
2 is an exponent, meaning that the number (what r is) will multiply twice, meaning r x r.
For example, if r was 4, then you would multiply 4 x 4, which is 16 and not 4 x 2, which is 8.
Many make this mistake, which can cause big trouble. As you saw in the example above, products are not the same.
Hope this helps! :)
Is Brainliest an option?
...
Here is a quadrilateral inscribed in a circle. Jada says that it is square because folding it along the horizontal dashed line and then the vertical dashed line gives 4 congruent sides. Do you agree with Jada? Explain why or why not.
Answer:
yes
Step-by-step explanation:
because all the side are congruent, and there are four right angles that can be seen in the image!
GIVING BRAINLIEST ONLY IF CORRECT
Step-by-step explanation:
[tex]0.4 \div 0.2 = 2 \\✓ = option \: 3[/tex]
Answer:
The model that correctly shows the problem 0.4 divided by 0.2 is option 3.
Step-by-step explanation:
Option 3 has 4 out of 10 rowS shaded in, which you can infer immediately is the correct answer. Since 10 rows represent 1 whole, that means that 4 rows shaded in are 0.4. In option 3, the four rows are split by blue lines and have 2 rows, or 0.2, in each group, so option 3 matches the problem 0.4 divided by 0.2.
Anybody know the answer???