Answers
Answer:
I believe the answers are C, D, and E. Sorry if I am wrong.
Explanation:
The discriminant is
D = b^2 - 4ac
D = (-5)^2 - 4(3)(-1)
D = 25 + 12
D = 37
This means 37 is under the square root, and we know the answers are B and F due to this. Also note with these two answer choices, they are in the form [tex]\frac{-b \pm \sqrt{D}}{2a}[/tex] where...
a = 3, so 2a = 2*3 = 6b = -5, so -b = -(-5) = 5Choices A, C, D, and E can be eliminated as the discriminant for these is D = 13.
Related Questions
Sandy is 6 inches taller than Marie. If Marie
is an odd number of inches tall, which of the
following could be Sandy's height?
Answers
Answer:
# Theoretically, the height of Sandy must be an odd numbers, and not less than 5.
It may be: 7,9,11,....
# However, as 1 inch for the height of a girl is too funny - Marie can not have a height of 1 inch ( only in the case Marie and Sandy are the names of the toys!) - you should choose the number that fits best to the human height.
Step-by-step explanation:
Please see the explanation for the answer in the picture attached below.
Find the exact solution of the equation. 7^x=8
Answers
Answer:
[tex] log_{7}(8) [/tex]
Bruce and Krista are going to buy a new furniture set for their living room. They want to buy a couch, a coffee table, and a recliner. They have narrowed it down so that they are choosing between 4 couches, 5 coffee tables, and 9 recliners. How many different furniture combinations are possible?
Answers
Answer:
There are 180 possible combinations for the furniture.
Step-by-step explanation:
4*5*9=180
Answer
180 combinations
Step-by-step explanation:
To figure out the number of combinations, we multiply 4*5*9. 4*5 equals 20 and 20*9 equals 180.
helpppppppppppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
answer ALL
Answers
Answer:
Use Desmos for the graphs, symbolab for the inequalities answers.
Step-by-step explanation:
Find the range of the data in the box plot below.
Answers
Answer:
Range: 20
General Formulas and Concepts:
Statistics
Range - the difference between the highest and lowest pointStep-by-step explanation:
Step 1: Define
Find values from box-and-whisker plot.
Highest point recorded = 25
Lowest point recorded = 5
Step 2: Find Range
Set up: 25 - 5Subtract: 20What's the numerator for the following rational
expression?
7/v+3/v=?/v
Answers
Answer:
54inches 43inches are the 53364inches rye 5t337 the earth stud is 37feet of the 368feet
Answer:
10
Step-by-step explanation:
they all have the same denominator so the only focus is adding the 7+3
0.00003
2 x 10-5
=
?
Answers
Answer:
[tex]0.00003=3[/tex]×[tex]10^{-5}[/tex]
[tex]2[/tex]×[tex]10^5[/tex] = [tex]200,000[/tex]
Step-by-step explanation:
When working with scientific notation, you are either given a decimal or whole number. The point of scientific notation is to rewrite a number in a more simplified form.You need to change the number so that there is one number on the left side of the decimal. An exponent is used to describe the change in the number. For example:
0.00003
In order to get one number to the left of the decimal, you need to move the decimal to the right 5 spaces. Since the zeros are to the left of the primary number (3), the exponent will be negative. The exponent itself will be the spaces you moved:
[tex]3[/tex]×[tex]10^{-5}[/tex]
The ten is used because of the decimal places you are moving. When you multiply a number by 10, you add a zero. For example:
[tex]2[/tex]×[tex]10^5[/tex]
Since there is a 10, we will be adding in zeros. The exponent determines how many zeros will be added. Since it is a positive number, the numbers will be to the right of the primary number:
200,000
Identify the value of r and a1 for each geometric
series.
8 + 4 + 2 + 1 + ...
Answers
Answer:
Step-by-step explanation:
Answer:A,E
second part 1.5,2. .5,8
Step-by-step explanation:
Factor the polynomial.
216x^3-64
Answers
Mario writes the equation (r + y)2 = z2 + 4(1/2ry) to begin a proof of the Pythagorean theorem. Use the drop-down menus to explain why this is a true equation.
Answers
Answer:
x+y
Z2
1/2xy
Step-by-step explanation:
(x+y)^2 finds the area of the outer square by squaring its side length.
z^2 + 4 (1/2xy) finds the area of the outer square by adding the area of the inner square and the four triangles.
Five-sixths of a number is 45.
Find the number.
Answers
Answer: The number is 54!!!
Hope it helps!!!
Step-by-step explanation:
Let's call the number x.
So, 5/6 (of or multiplication) = 45
5x = 45* 6
x = 270/5
x = 54
Help please
If steak costs $8.45 per pound, what will be the total cost of 0.8 pounds of steak?
Answers
Answer:
$6.76
Step-by-step explanation:
Multiply 8.45 by 0.8 and you will get 6.76
This table shows the area in inches of four rectangular scraps of fabric.
What is the median of the sizes of the four scraps of fabric?
78 in²
80 in²
82 in²
84 in²
table:
Scrap Area (in²)
A 84
B 72
C 80
D 84
Answers
Answer: 82
Step-by-step explanation:
(80+ 84) / 2
164/2
Answer:
82
Step-by-step explanation:
A circle has a circumference of 150 meters. What is the measure of its radius? Round
to the nearest tenth.
circumference 150 m
Answers
Answer:
23.9 is the radius
Step-by-step explanation:
150/3.14 =47.7707006369
47.7707006369/2 = 23.8853503185
Round to nearest tenth = 23.9
Hope this helps!
Answer:
23.9
Step-by-step explanation:
Which statement best summarizes the main idea of the above passage from
"An Indian Father's Plea"?
A. Wind-Wolf learned much of what he learned from public school.
B. Wind-Wolf has a different educational background than many
other children.
O C. Wind-Wolf looks and acts differently than the other children in his
school.
D. Wind-Wolf will often answer questions at school using answers
he learned from those in his tribe.
Answers
Answer:
Had to look for the missing passage and here is my answer. Based on the passage from "An Indian Father's Plea", I can say that the statement that shows the best summary about this is option D: Wind–Wolf has begun denying his native culture because it conflicts with his school culture. Hope this helps.
Step-by-step explanation:
help asap please tyyy
Answers
Answer:
I believe its the blue (42 u^2)
Step-by-step explanation:
It would be 42u^2.
Step-by-step explanation:This is because there are 42 squares if you count them all up.
Or you can do (9)*2 + (6)*4 to get it.
Pentagon ABCDE is rotated 90 degrees counterclockwise about the origin to form pentagon A’ B’ C’ D’ E’. What is the y-coordinate if point C’?
Answers
Answer:
4
Step-by-step explanation:
When rotating a point 90 degrees counterclockwise about the origin the point A(x,y) becomes A'(-y,x).
Point C has coordinates of (4, 3)
New coordinates will be C'(-3, 4)
So the answer is:
y-coordinate of C' is 4
Answer:
4
Step-by-step explanation:
Hope this helped!
How much will the guitar be worth in 10 years?
Answers
Answer:
$44487
Step-by-step explanation:
If you plug in 10 for t, you are left with the following equation:
[tex]V=12000(1.14)^{10}=12000\cdot 3.7072\approx 44487[/tex]. Hope this helps!
Answer: $44,487
Step-by-step explanation:
To solve this, substitute t (the variable for time in the equation) with 10 to represent the value of the guitar after 10 years.
[tex]V = 12000(1.14)^{10}\\V = 12000*3.7072\\\\V = 44487[/tex]
The guitar will be worth $44,487 in 10 years.
What is the answer to this question?
Answers
Answer:
The answer is 480 in^3
Step-by-step explanation:
Right rectangular prism calc - find V
volume = h * w * l where h is prism height, w is its width and l its length.
Write an equation of the line that passes through (2, −2) and is parallel to the line y=3x+9.
Answers
Step-by-step explanation:
Parallel lines have the same slope, so we know that our line will have a slope of 3 because y = 3x + 9 has a slope of 3. Now, we can use the point-slope formula of the line to find the equation.
We have y - y₁ = m (x - x₁) (m = 3, x₁ = 2, y₁ = -2)
y- (-2) = 3 (x - 2)
y + 2 = 3x - 6
y = 3x - 8
Hope this helps!
Answer:
y = 3x - 8
Step-by-step explanation:
We know that parallel lines have the same gradient. In this situation we want want to work the equation of the line that is parallel to y = 3x + 9 and passes through ( 2 , - 2 ). We know that equations of lines usually go in the format of y = mx + c
↔ Where 'm' is the gradient / slope
↔ Where 'c' is the y - intercept
Using the information in the first sentence we can set up an equation to find the value of 'c'
⇒ Form the equation
→ y = 3x + c
⇒ Substitute ( 2 , -2 ) into the equation to find the value of c
→ -2 = 6 + c
⇒ Minus 6 from both sides to isolate c
→ -8 = c
⇒ Put the value of c back into y = 3x + c
→ y = 3x - 8
So equation of the line that passes through ( 2, −2 ) and is parallel to the line y = 3x + 9 is y = 3x - 8
Pi ends after how many decimal places?
Answers
Answer:
31.4 trillion decimal places but no one really knows how many decimal places there are. 31.4 trillion decimal places is a world record set by google
Step-by-step explanation:
Answer:
`31.4 trillion decimal places.
Explanation:
As far as we know Google found out that there is about 31.4 trillion decimal places which is rounded to 3.14. Google is not 100% accurate though, Pi is a mathematical number that never ends so we just use what we know which is 3.14. Pi is an ideal that in numerical terms can be approached, but never reached. In order to calculate Pi simply involves taking any circle and dividing its circumference by its diameter. William Jones is the "founder" of Pi in 1706. Jones was a British little-known mathematics teacher, Jones was the first person to use a symbol to represent the platonic concept of Pi.
I hope this helps. : )
Find the measure of angle U
Answers
Answer:
30
Step-by-step explanation:
180-110=70
70+80=150
180-150=30
Use the diagram below to find the distance between points (-6, 5) and (-1, -7).
A. 13 units
B. 19 units
C. 6 units
D. 17 units
Answers
Answer:
A. 13 units
Step-by-step explanation:
using distance formula
(x2-x1)^2 + (y2-y1)^2 in roots
(-1+6)^2 + (-7-5)^2 in roots
5^2 + 12^2 in roots
25 +144 in roots
169 in roots
13 units
Terrence tracked the number of hours he worked each week and recorded the data in a frequency table.
Hours worked Frequency
20 2
21 0
23 3
25 8
26 2
27 6
Create a dot plot for the data in the table. Hover over each number on the number line. Then click and drag up to create the dots.
Answers
Answer:
2 dots on 20
0 dots on 21
3 dots on 23
8 dots on 25
2 dots on 26
6 dots on 27
Step-by-step explanation:
can someone answer this please
f(x)=(x+4)^2
f(x)=x^2+4
f(x)=(x-4)^2
f(x)=x^2-4
Answers
2. Simplify.
–48
O A. 4213
OB. -4213
O C.-4v3
OD. 4V3
Answers
48
2 24
12 2
6 2
3 2
2•2V3
4V3
The function g(n) = n2 − 16n + 69 represents a parabola.
Part A: Rewrite the function in vertex form by completing the square. Show your work. (6 points)
Part B: Determine the vertex and indicate whether it is a maximum or a minimum on the graph. How do you know? (2 points)
Part C: Determine the axis of symmetry for g(n). (2 points)
Answers
Answer:
Step-by-step explanation:
A) y + ? = n^2 - 16n + ? + 69
y + 64 = n^2 -16n + 64 + 69
y + 64 = (n-8)^2 + 69
y = (n-8)^2 + 5
B) vertex is (8,5) because the value of a vertex is always (h,k) from the parent vertex function:
y = a(x-h) + k
it's a minimum only because the (a) value is positive
C) axis of symmetry = 8
math help pls, will reward.
Answers
Answer:
6. B
7. A
8. A
9. A
Step-by-step explanation:
6. As x approaches ∞ (as x goes to the right), y approaches ∞ (y goes up).
7. f(x) = -x⁴ + 5x³ − 2x + 5
The leading coefficient is negative, and the highest power is 4 which is even. So as x→-∞, f(x)→-∞, and as x→∞, f(x)→-∞.
8. The roots are 3, -4, and 1, so the polynomial is:
f(x) = (x − 3) (x − (-4)) (x − 1)
f(x) = (x − 3) (x + 4) (x − 1)
9. The roots are 0 (multiplicity of 1), 1 (multiplicity of 2), and -2 (multiplicity of 2).
f(x) = (x − 0)¹ (x − 1)² (x − (-2))²
f(x) = x (x − 1)² (x + 2)²
4 blue marbles, 3 green marbles, 7 yellow marbles, and 2 red marbles are in a bag. What is the probability of drawing a blue marble, putting it back in, then drawing a red marbe?
Answers
Answer:
0.375 in fraction is 38.
4/16 + 2/16 = 0.375
Step-by-step explanation:
The sum of two numbers is no more than 28. Let x represent the first number, and let y represent the second number. Which
inequality represents this situation?
Answers
Answer:
Step-by-step explanation:
Let x the 1st and y the 2nd number. So the sum.of x and y means x+y is no more 28. That means is less than 28
So x+y<=28 or x+y<28.
Answer:
Answer is D
Step-by-step explanation:
