PLZ HELP!!!!!!!
5. How many real number solutions does the equation have?
0= -4x^2+7x+8
A) two solutions
B) one solution
C) no solutions
D) infinitely many solutions
6. How many real number solutions does the equation have?
0= 3x^2+18x+27
Answers
Answer:
5. A) two solutions
6. one solution
Step-by-step explanation:
5. A graph shows the curve has two x-intercepts, so two solutions. You can also figure this by looking at the discriminant:
b^2 -4ac = (7)^2 -4(-4)(8) . . . . a positive number
When the discriminant is positive, there are two real solutions.
__
6. The equation factors as ...
0 = 3(x +3)^2
This will have one real solution at x=-3.
Related Questions
100pts: What is the slope of the following curve at x = n, for an arbitrarily chosen integer n?:
y = 3x^2 - 37x + 6
Answers
Answer:
6n -37
Step-by-step explanation:
The slope would be the derivative of the function
dy/dx = 6x - 37 evaluated at the point n
dy/dx = 6n -37
Answer:
6n - 37
Step-by-step explanation:
The derivative of the function f(x) gives the gradient (slope) of the tangent to the graph of y = f(x) at the point (x, y).
Given:
[tex]y=3x^2-37x+6[/tex]
Therefore, the gradient (slope) of the given curve at x is:
[tex]\implies \dfrac{dy}{dx}=2 \cdot 3x^{2-1}-37x^{1-1}+0[/tex]
[tex]\implies \dfrac{dy}{dx}=6x-37[/tex]
To find the slope, simply substitute x for n:
[tex]\implies 6n-37[/tex]
Which of the following rational functions is graphed below?
Answers
Answer:
option B
Step-by-step explanation:
We can see in the graph that the function has two values of x where the value of y goes to infinity: x = -6 and x = 6.
These points where the value of the function goes to infinity usually are roots of the polynomial in the denominator of a fraction (when the values of x tend to these values, the denominator of the fraction tends to 0, so we have a discontinuity in the function).
So the option that represents a function that have these points in x = -6 and x = 6 is the function in option B.
The other options show functions that have only one point that goes to infinity.
Answer:b
Step-by-step explanation:
The town of Haverford just bought land to make a new park. The land is in the shape of a rectangle that is 2/3 of a mile wide and 3/4 of a mile long.
What is the area, in square miles, of the land the town of Haverford bought?
A 5/12
B 6/12
C 8/9
D 6
Answers
Answer:
B 6/12
Step-by-step explanation:
The first step is to set up your fraction like so: [tex]\frac{2}{3} x \frac{3}{4}[/tex]
Next you will multiply across the top 2·3=6 (this will become your numerator)
Then you will multiply across the bottom 3·4=12(this will become your denominator)
if asked it can be simplified to 1/2 if not your final equation will look like:
[tex]\frac{2}{3} x \frac{3}{4} = \frac{6}{12}[/tex]HELP!!! 2(4x+3)=x+1 It's geometry!
Answers
Answer:
[tex]x=-\frac{5}{7}[/tex]
Step-by-step explanation:
[tex]2(4x+3)=x+1[/tex]
[tex]8x+6=x+1[/tex]
[tex]8x-x=1-6[/tex]
[tex]7x=-5[/tex]
[tex]x=\frac{-5}{7}[/tex]
Answer:
x = -5/7
Step-by-step explanation:
2(4x+3)=x+1
Distribute
8x +6 = x+1
Subtract x from each side
8x+6-x = x+1-x
7x+6 = 1
Subtract 6 from each side
7x+6-6 = 1-6
7x =-5
Divide each side by 7
7x/7 = -5/7
x = -5/7
1_____=1.6_____ What
Answers
Answer:
1 mile is 1.6 km
Step-by-step explanation:
I don't know how to explain
Solve the system of equations.
x + 3y = −1
2x + 2y = 6
(−4, 1)
(2, −1)
(4, −1)
(5, −2)
Answers
Answer:
(5,-2)
Step-by-step explanation:
Multiplying the first equation by 2 we get
2x+6y=-2
Subtracting the second equation we get
4y=-8
y=-2
Plugging y as -2 into the equation we get x=5
Answer:
(5, -2)
Step-by-step explanation:
x + 3y = −1
2x + 2y = 6 ⇒ x+y=3
Subtract second equation from the first one:
x+3y=-1x+y=33y-y= -1 -32y= -4y= -2x= 3+2= 5please help with numbers 5 and 6
Answers
The answer of question no 5 is 46
The answer of question no 6 is 79
Look at the attached picture
Hope it will help you
Read the following paragraph. How does sentence 4 develop the main idea of the paragraph?
Gertrude Belle Elion was born on Jan. 23, 1918, in New York City.
She graduated from Hunter College in New York City with a degree in biochemistry in 1937.
Unable to obtain a graduate research position because she was a woman, she took a series of jobs, including lab assistant, chemistry and physics teacher in New York City high schools, and research chemist.
During this time she also took classes at New York University, where she earned a master's degree in 1941.
Because she could not devote herself to full-time studies, Elion never received a doctorate.
This sentence tells readers where she went to school for her doctorate degree.
This sentence shows Elion's determination and commitment to learn.
This sentence shows that Elion had to try many schools to get accepted into one.
This sentence proves the idea that Elion had to learn biochemistry in unusual ways.
Answers
Answer:
This sentence shows Elion's determination and commitment to learn.
Step-by-step explanation:
During this time she also took classes at New York University, where she earned a master's degree in 1941.
The way in which sentence 4 assists in developing the key idea of the paragraph would be:
B). This sentence shows Elion's determination and commitment to learn.
The key idea that the given paragraph aims to convey is a brief biography of Belle Elion to the readers, especially, her early life.Sentence 4 in the given paragraph aims to advance this idea by displaying the strength, dedication, and determination that she put towards learning.This helps the readers understand her character sketch more clearly and effectively.Thus, option B is the correct answer.
Learn more about "Main Idea" here:
brainly.com/question/2243777
100 points and brainliest A sports club has 84 members who learned baseball, and 42 of those members also learned basketball. There are 25 students who did not learn baseball but learned basketball, and 8 students did not learn either baseball or basketball. Which table best shows the conditional relative frequency of rows for the data? Learn baseball Do not learn baseball Total Learn basketball 0.36 0.21 1 Do not learn basketball 0.36 0.07 1 Total 0.72 0.28 1 Learn baseball Do not learn baseball Total Learn basketball 0.5 0.76 1 Do not learn basketball 0.5 0.24 1 Total 0.72 0.28 1 Learn baseball Do not learn baseball Total Learn basketball 0.63 0.37 1 Do not learn basketball 0.84 0.16 1 Total 0.72 0.28 1 Learn baseball Do not learn baseball Total Learn basketball 0.42 0.25 1 Do not learn basketball 0.42 0.80 1 Total 0.84 0.33 1
Answers
Answer: The answer is C. C in your given options.
Step-by-step explanation:
Learn baseball Do not learn baseball Total
Learn basketball 0.63 0.37 1
Do not learn basketball 0.84 0.16 1
Total 0.72 0.28 1
Answer:
C
Step-by-step explanation:
Learn baseball Do not learn baseball Total
Learn basketball 0.63 0.37
Do not learn basketball 0.84 0.16
Total 0.72 0.28
Hope this helps!
A rectangular painting canvas has the dimensions of 22 by 23 inches. Find the area, in square inches, of the painting. Use the formula, area = length * width
Answers
Answer:
506 square inches
Step-by-step explanation:
length=22 inches
breadth=23 inches
area=length *breadth
area=22*23=506 squareinches
Answer:
506 inches
Step-by-step explanation:
22 times 23 equals 506 inches.
Two waiters at a cafe each served 10 large fruit smoothies. The amount in each large smoothie is shown below. What is the mean amounts in Waiter A's Large Smoothies? Do not include units in your answer.
Answers
Answer:
answer is 5 my explanation is I took the quiz a.d bit but right
Write an expression that gives the area of the shaded region in the figure.
Answers
Answer:
Area = 88 square units
Step-by-step explanation:
The length of the blue rectangle can be found by subtracting 15 and 4, which equals 11. The width of the blue rectangle can be found by subtracting 6 from 14, which equals 8.
area = length x width
area = 11 x 8
area = 88 square units
Somebody help ASAP please please please. I basically forgot all the steps to do this.
Answers
Answer:
m=50
Step-by-step explanation:
m=4a+2c
m= 4(10)+2(5)
m= 40+10
m=50
Whats the greatest number of cross sections?
Answers
Ms. Weston bought a watermelon that weighed 32ounces. She also bought an orange that was 1/4 the weight of the watermelon.
How many total pounds of fruit did she buy?
A: 1/2
B: 2 1/2
C: 8
D:56
Answers
Answer:
B is the correct answer
Step-by-step explanation:
Dimensional Analysis
Josh paid for four books with three $20 bills he received $12 in change each book was the same price how much did each book cost
Answers
Three $20 bills is a total of $60
$60 - $12 = $48
He spent a total of $48 on the books
Divide the total spent by the number of books:
48 / 3 = 16
Each book cost $16
Answer:$12 per book
Step-by-step explanation: $20 x 3= $60
If you have $12 change you minus that from the $60
Now that is $48 for 4 books.
To work out one book you do $48/4 which is $12 per book.
1) Find the length of point A(-3,1) and B(2,6). Leave your
answer in RADICAL FORM ONLY.
Answers
Answer: The length of point A(-3,1) and B(2,6) is [tex]5\sqrt{2}\text{ units}[/tex] .
Step-by-step explanation:
We know that the distance between the two points (a,b) and (c,d) is given by :-
[tex]d=\sqrt{(a-c)^2+(b-d)^2}[/tex]
Given points = A(-3,1) and B(2,6)
Therefore the distance between the points A(-3,1) and B(2,6) is given by :-
[tex]d=\sqrt{(-3-2)^2+(1-6)^2}\\\\\Rightarrow\ d=\sqrt{(-5)^2+(-5)^2}\\\\\Rightarrow\ d=\sqrt{25+25}\\\\\Rightarrow\ d=\sqrt{50}\\\\\Rightarrow\ d=\sqrt{25\times2}\\\\\Rightarrow\ d=\sqrt{5^2\times2}\\\\\Rightarrow\ d=5\sqrt{2}\text{ units}[/tex]
Hence, the length of point A(-3,1) and B(2,6) is [tex]5\sqrt{2}\text{ units}[/tex] .
192 € down by a quarter?
Answers
Answer:
144 €
Step-by-step explanation:
If you begin with 192 € and these funds decline (go down) by a quarter, you'll end up with
(1.00 - 0.25)(192 €) = 144 €
Zack needs $299.99 to buy the new bike he wants. He has saved $150 so far toward the new bike. From this week on, he will save $12.50 per week toward the new bike. Ten weeks from now, how much more money will he still need to save to buy the bike?
$24.99
$29.99
$127.49
$137.49
Answers
Answer:
The answer is $24.99
The solution is Option A.
The equation of line is y = 12.5x + 150 , where x is the number of weeks
The amount Zack needs after 10 weeks to buy the bike is $ 24.99
What is an Equation of a line?
The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept
And y - y₁ = m ( x - x₁ )
y = y-coordinate of second point
y₁ = y-coordinate of point one
m = slope
x = x-coordinate of second point
x₁ = x-coordinate of point one
The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given data ,
Let the equation of line be represented as A
Now , the value of A is
The price of the bike Zack needs to buy = $ 299.99
The initial amount with Zack = $ 150
The amount Zack saves in a week = $ 12.50
The number of weeks = x
The amount Zack saves in x weeks = 12.5x
So , the total amount with Zack after x week is given by the equation ,
Total amount with Zack after x week y = amount Zack saves in x weeks + initial amount with Zack
Substituting the values in the equation , we get
Total amount with Zack after x week y = 12.5x + 150
Now , after 10 weeks , the amount with Zack is
Substitute the value of x as 10 in the equation , we get
y = 12.5x + 150
y = 12.5 ( 10 ) + 150
y = 125 + 150
y = $ 275
Now , the amount left to buy the bike = price of the bike Zack needs to buy - amount with Zack after 10 weeks
Substituting the values in the equation , we get
Amount left to buy the bike A = $ 299.99 - $ 275
Amount left to buy the bike A = $ 24.99
Therefore , the value of A is $ 24.99
Hence , the amount Zack needs is $ 24.99
To learn more about equation of line click :
https://brainly.com/question/14200719
#SPJ6
What is the equation in slope-intercept form of a line passing through points (-1, 1) and (1, 5)
Answers
Answer:
y=2x+3
Step-by-step explanation:
Answer:
y=2x+3
Step-by-step explanation:
ANSWERR ASAPP
the directions on a lawn mower manual call for a mixture of oil and gasoline that is 60% oil. the tank holds 12 gallons. how many gallons will be oil?
A. 7.2 gallons
b. 5.8 gallons
c. 6.8 gallons
d. 5 gallons
Answers
The athlete drink 16 ounces of water every two hours starting at 7:30 AM and continuing for the next 14 hours. A) how many quarts did the athlete consume? B) how many pints of water did the athlete consume?
Answers
When the athlete drink 16 ounces of water every two hours for the next 14 hours,
(A) The athlete consumes 3.5 quartz of water.
(B) The athlete consumes 7 pints of water.
Conversions(1) Ounce to Pints16 ounces = 1 pint
(2) Quarts to Ounces1 quart = 32 ounces.
(A) Calculation for the water consumed by athlete in quarts:The total duration for which athlete consumes the water is 14 hours with a after every 2 hours.
The total number of times the water consumed by athlete is 14/2 = 7.
Covert the 16 ounces of water in quarts
= 16/ 32
=1/2
The total quantity of water consumed in quarts is
= 7×(1/2)
= 3.5 quarts
Thus, the amount of water consumed by athlete in entire 14 hours is 3.5 quarts.
(B) Calculation for the water consumed by athlete in pints:The total duration for which athlete consumes the water is 14 hours with a after every 2 hours.
The total number of times the water consumed by athlete is 14/2 = 7.
Convert 16 ounce of water into pint
= 16/16
= 1
The total quantity of water consumed in pints is
= 7×1
= 7
Thus, the amount of water consumed by athlete in entire 14 hours is 7 pints.
To know more about volume and its standard unit, here
https://brainly.com/question/1789840
#SPJ2
Can someone check my answers?
The amount of money in Alexander’s account is, = 4000 − 70, where is the amount in dollars and is the time in weeks.
a) Which variable is independent and which is dependent?
Answer: Dependent is -70x and independent is 4000
b) In which week will there be $1701 in the account?
Answer:
y=4000-70(x)
1701=4000-70(x)
-70x=1701-4000
-70x= -2299
x=-2299/-70
x=2299/70
x=32.843
x=33
c) How much will the amount in Alexander’s account change if the time increases by 15 weeks?
Answer:
y=4000-70(x)
y=4000-70(15)
y=2950
Answers
Answer:
yes you are correct
Step-by-step explanation:
The answers are a) y is the dependent variable, x is the independent value. b) 33 weeks and c) $2950
What are dependent and independent variables?The independent variable is the cause. Its value is independent of other variables in your study. The dependent variable is the effect. Its value depends on changes in the independent variable.
Given that, The amount of money in Alexander’s account is, y = 4000 − 70x, where y is the amount in dollars and x is the time in weeks.
a) Here, y is the dependent variable as it depends on the value of x, and x is the independent value.
b) We have, total amount = $1701
Therefore, put y = $1701
$1701 = 4000 − 70x
70x = 2999
x = 32.84 ≈ 33 weeks
c) In 15 weeks the amount will be =
y = 4000 - 70(15)
= $2950
Hence, the answers are a) y is the dependent variable, x is the independent value. b) 33 weeks and c) $2950
Learn more about dependent and independent variables, click;
https://brainly.com/question/1479694
#SPJ2
Complete the statement: 0.6L =______mL.
A. 600
B. 0.06
Answers
Answer: Complete the statement: 0.6L =______mL.
A. 600
In the diagram below, DE is parallel to XY. What is the value of x?
.
X
105
A. 75
B. 125
C. 105
D. 95
Answers
Answer:
105 degrees
Step-by-step explanation:
Corresponding angles
Answer:
x = 105⁰( corresponding angles)
Factor 64 – x15. (4 – x3)(16 + 4x3 + x3) (4 – x3)(16 + 4x3 + x6) (4 – x5)(16 + 4x5 + x5) (4 – x5)(16 + 4x5 + x10)
Answers
Answer:
D :)
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Isabel invested $200 in a fund for 6 years and was paid simple interest. The total interest that she received on the investment was $48. As a percentage, what was the annual interest rate of her investment.
Answers
Direct Variation: If y = 6, when x = -2, find y when x = 18.
Answers
Answer:
The answer is -54. Please mark as brainliest :)
Step-by-step explanation:
Y is directly proportional to x. So....
Finding the value of constant k.y=kx
6=-2k
-3=k.
Finding y when x is 18y=-3*18
y=-54.
Please answer The attachment correctly below.
Answers
Answer:
$55
Step-by-step explanation:
do PEMDAS
do parenthesis first
then multiply
6.75 plus 4.25 is 11
multiply 11 by 5
The bottom part of this block is a rectangular prism. The top part is a square pyramid. You want to cover the block entirely with paper. How much paper do you need?
Answers
Answer:
970.2
28x11x6.3
1,940.4/2
970.2