Answers
D = b^2 - 4 ac
D=8^2 - 4 x 6 x ( -10 )
D = 304
D > 0
The quadratic equation has 2 real solutions
Greetings from Brasil....
Let's solve this 2nd degree equation.
6b² + 8b - 10 = 0 dividing all terms by 2
3b² + 4b - 5 = 0 applying the baskara formula
Δ = 4² - 4 · 3 · (- 5)
Δ = 76
b = (- 4 ± √76)/6 so
b' = (- 4 + √76)/6b'' = (- 4 - √76)/6
Related Questions
Polygon ABCD is a przimage of an enlargement with a scale factor of 3 and a
total area of 4. What is the total area of the enlarged image?
Answers
i dont think you have a whole question down and we need examples of the triangles so please shw examples
Answer:
hi not sure you need this still but its 36
Step-by-step explanation
Factorize : 3x2 – 10xy + 8y2
Answers
[tex]3x^2-10xy + 8y^2=\\\\=3x^2-6xy-4xy + 8y^2=\\\\=3x(x-2y)-4y(x-2y)=\\\\=(x-2y)(3x-4y)[/tex]
8+1/2(12)=x
Solve please
Answers
Answer:
8+ 1/2 (12) = x
8+ 6 = x
Therefore x = 14
Answer:
The answer is X = 14
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
Step 2: Flip the equation.
The daily production cost, C, for x units is modeled by the equation: C = 200 – 7x + 0.345x2 Explain how to find the domain and range of C
Answers
range is the set of possible results for c(x), possible costs.
you can derive this from the fact that c(x) is a parabole and you can draw it, for which you can find the vertex of the parabola, the roots, the y intercept, the shape. also limit the costs to be positive.
you can substitute some values for x to help you, for example.
x y
0 200
1 200 - 7 + 0.345 = 193.345
2 200 - 14 + .345(4) = 187.38
3 200 - 21 + .345(9) = 182.105
the function does not have real roots, then the costs never decrease to 0.
the function starts at c(x) = 200, decreases until the vertex, (x = 10, c = 164.5) and starts to increase
then the range goes to 164.5 to infinity, limited to the solution for x = positive integers.
Answer:
This is a quadratic function, which is usually defined on all reals. But, the domain is restricted to x>=0 because it does not make sense to produce a negative number of units.
Find the vertex of the parabola at
(10.14, 164.5)
Since the parabola opens up, the range is y>=164.5
Step-by-step explanation:
How many terms are in the polynomial?
x^2 – 121
A. 2
B. 3
C. 4
D. 5
Answers
There are two terms x^2 is one and 121 is the other one.
The answer is 2 terms.
While on vacation in Canada, you notice that temperatures are reported in degrees Celsius. You know there is a linear
relationship between Fahrenheit and Celsius, but you forget the formula. you remember the freezing point of water is 0°C
or 32°F and its boiling point is 100°C or 212°F
a Write an equation that represents degrees Fahrenheit in terms of degrees Celsius. Let x represent the temperature in degrees Celsius and
let y represent the temperature in degrees Fahrenheit
Answers
Since , the relation is linear .
Let equation is y = mx + c .
Putting , x = 0 and y = 32 .
32 = c .......( 1 )
Also , putting x = 100 and y = 212 .
We get :
212 = 100m + c .......( 2 )
Comparing equation 1 and 2 .
100m = 212 - 32
x = 1.8
Therefore , y = 1.8x + 32 .
Hence , this is the required solution .
[tex]y=\dfrac{9}{5}x+32[/tex] represents degrees Fahrenheit in terms of degrees Celsius. where x represent the temperature in degrees Celsius and y represents the temperature in degrees Fahrenheit.
Temperature can be expressed in different units like degrees Celsius and degrees Fahrenheit.
Let us consider two variables x and y as following:
x represent the temperature in degrees Celsius
y represent the temperature in degrees Fahrenheit
Equation depicting relation between variable x and y is
[tex]y-y_1=m(x-x_1)[/tex]...........................1
where, [tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Using the given conditions:
[tex](x_1,y_1)=(0,32) \text{\ and\ }(x_2,y_2)=(100,212)[/tex]
Substituting to calculate the value of m,
[tex]m=\dfrac{212-32}{100-0}\\\\m=\dfrac{180}{100}\\\\m=9/5[/tex]
From equation 1
[tex]y-32=\dfrac{9}{5}(x-0)\\y-32=\dfrac{9}{5}x\\y=\dfrac{9}{5}x+32[/tex]
Thus, an equation that representing degrees Fahrenheit in terms of degrees Celsius is [tex]y=\dfrac{9}{5}x+32[/tex].
Learn more about unit conversion, here:
https://brainly.com/question/28969559
#SPJ3
Which of these is the algebraic expression for "six more than the product of seven and some number?"
6 + 7 + x
7x + 6
6 + 7 ÷ x
7 + 6x
Thank you for answering if you do :-)
JESUS LOVES YOU
Answers
Answer:
6+7x
Step-by-step explanation:
y=2x+3 help please ...
Answers
Answer:
x=-3/2
y=3
Step-by-step explanation:
i hope this helps
Answer:
x=2x+3 Improper question not enough details The only answer can be found right now is 3x+3
Step-by-step explanation:
Combine like terms and give me brainliest please
How do you know if a whole number is a perfect square?
A. A whole number is a perfect square if it is divisible by 4.
B. A whole number is a perfect square if its square root is an irrational number.
C. A whole number is a perfect square if it is divisible by 2.
D. A whole number is a perfect square if its square root is a whole number.
Answers
-7k + 5(6k + 5) < 209
Answers
Answer:
k < 8
Step-by-step explanation:
-7k + 30k + 25 < 209
23k < 209 - 25
23k < 184 /: 23
k < 8
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ÷)
Omar is playing a computer game. He starts with 0 points, wins 8 points, loses 6 points 4 times, and then wins 2 points. Which integer represents Omar’s score? –30 –14 16 34
Answers
The answer is -14. 0+8 =8 8 - (6x4) = - (-16 + 2 = -14
Answer:
-14
Step-by-step explanation:
A rectangle that is 4 inches by 6 inches has been scaled by a factor of 7 . What are the side lengths of the scaled copy ?
Answers
Step-by-step explanation:
step one:
The question is incomplete it did not specify weather the scale was a reduction or an increase in the dimension of the rectangle.
step two:
let us assume it was to be an increase i.e 7x
the length would be 4*7= 28 inches
the width would be 6*7= 42 inches
step three:
Also, we assume it was to a decrease i.e 7x
the length would be 4/7= 0.57 inches
the width would be 6/7= 0.85 inches
If you studied “the world in spatial terms” as a geographer, what would you most likely focus on?
A.what natural environment are in an area
B.which culture and traditions are common
C.what to plan for the future
D.where things are located in relation to one another
Answers
Answer:
A.) What natural environments are in an area
Step-by-step explanation:
evaluate the expression -8 + (-15)
Answers
Hey there!
ANSWER: [tex]-23[/tex]EXPLANATION:[tex]-8+(-15)[/tex]
To easily solve this, try removing the negative and add 8 + 15.
[tex]8+(15)=23[/tex]
Now add back the negative.
[tex]-8+(-15)=-23\\-23(ANSWER)[/tex]
Hope this helps and have a great weekend!
[tex]\text {-TestedHyperr}[/tex]
pls help i need help
Answers
Answer:
4.69, hope this helps, Thank you
keira has 36 cakes,she gives 1/6 of them to tom and 1/9 to sue, how many cakes does she have left?
Answers
Answer:
26
Step-by-step explanation:
1/6 of 36 is 6
1/9 of 36 is 4
6+4=10
36-10= 26
Answer:
26 cakes
Step-by-step explanation:
36 divided by 6 = 6
30 - 6 = 24
36 divided by 9 = 4
6 + 4 = 10
36 - 10 = 26
Hopefully this helps you :)
pls give me brainlest ;)
What would 489,000,000,000,000,000 in scientific notation
Answers
For this question the answer is 4.89x10^17.
There are 15 zeros plus the 2 zeroes when you move the decimal over twice to 4.89
QUICK NEED HELP FAST 60 POINTS TWO WHOEVER ASNWERS FIRST
Answers
Just multiply 5x3 and find area by a=s^2
Brainliest?
At Nancy's Newsstand, 3 magazines cost $15.00. How many magazines could you buy with $45.00?
Answers
Answer:
9
Step-by-step explanation:
If three magazines cost $15 then that means that each magazine costs $5. So we do 5 divided by 45 which equals 9. SO the answer is 9!
If you are happy with my answer I would like branliest:)
Mario and his family are discussing how to pay for his college
education. The cost of tuition at the college that Mario wants to attend is
$7,500 per year. Mario's parents will pay 60% of the tuition cost every
year, and Mario will pay the rest. Mario has two years to save enough
money to attend his first two years of college. What is the minimum
amount of money he should save every month in order to reach his goal?
Answers
Answer:
$250 per month for 2 years
Step-by-step explanation:
Which is greater?
[tex]4 \sqrt{20} [/tex]
or
[tex] \sqrt{40} [/tex]
Answers
Answer:
4√20
Step-by-step explanation:
√40 = √4 * √10 = 2√10
4√20 > 2√10
then:
the greater is:
4√20
What is 8.325 rounded to the nearest hundredth?
Answers
Answer:
8.3
Step-by-step explanation:
hope it helps
Please help on number 9 and 10. Will mark brainliest.
Answers
Answer:
9. 1.24 mL
10. $5.93
Step-by-step explanation:
Question 9:
If the dosage of medicine is 0.01 mL per pound of weight of the patient, and the patient's weight is 124 pounds, we can set up an equation to solve for how much medicine the patient would need to take:
Dosage of medicine per pound of body weight x Total body weight = Total medicine required
OR
0.01 * w = m,
where w is total body weight and m is total medicine required.
To solve for the dosage the patient needs, just plug the numbers into the right places (124 for w and leave m as it is):
0.01 * 124 = m
1.24 = m
Therefore, a patient with a body weight of 124 pounds would need a 1.24 mL dosage.
Question 10:
To make the multiplication easier, we could rewrite 15% as 0.15 ( because 15% = 15/100):
0.15 * Total bill = Total tax payed for bill (Also can be written as [tex]\frac{15}{100} * 39.51[/tex])
OR
0.15*39.51 = Total tax
5.9265 = Total tax
5.93 = Total tax <-------- (rounded)
State the domain and range of the given relation
(-4,3), (-1,-4), (0, -4), (2, 3), (3, -3) (4, 7)
Answers
Answer:
work is shown and pictured
Find the axis of symmetry f(x) = 2x2 - 4x.
Answers
Answer:
x=1
Step-by-step explanation:
The function graph is a parabola (branches pointing up). Vertex (1; -2). The graph is symmetrical about the x axis = 1
[tex]f(x)=2x^{2} -4x \\x_{0} =-b/2a=-(-4)/(2*2)=1\\f(1)=-2\\[/tex]
HELP I NEED THIS ANSWERED QUICK!
Answers
Answer:
d is correct
Step-by-step explanation:
What is the next two items in the row?
-1
2
5
8
Box 1
Box 2
Select the correct answer from each dropdown menu.
Box 1
[ Select ]
Box 2 [Select]
20 pts
Answers
Answer:
12, 15 would be the next two in that order
HELPPP PLEASE!!!
The store has 61 guppies divided into 8 aquarium tanks, and a small display aquarium on
the sales counter. Each of the 8 tanks has an even number in them with the remaining
guppies in the display aquarium. How many guppies are in each aquarium and in the
display aquarium?
Answers
Answer:
5 in display, 7 in each aquarium.
Step-by-step explanation:
A hockey game had 2,058 fans Friday night. The baseball game has 1,300 fans that night. How many more fans were at the hockey game?
Answers
Subtract the number at the baseball game from the hockey game:
2058 - 1300 = 758
There was 758 more people at the hockey game.
Answer:
758 more fans were there
Step-by-step explanation:
Difference = Hockey fans - Baseball fans
= 2058 - 1300
= 758
a Number m plus 4 is greater than or equal to seven
Answers
Answer:
m ≥ 3
m is greather or equal to 3
Step-by-step explanation:
m + 4 ≥ 7
m ≥ 7 - 4
m ≥ 3