Answer:
x = 8
x = 7
Step-by-step explanation:
Solving x2-15x+56 = 0 by the Quadratic Formula .
According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :
- B ± √ B2-4AC
x = ————————
2A
In our case, A = 1
B = -15
C = 56
Accordingly, B2 - 4AC =
225 - 224 =
1
Applying the quadratic formula :
15 ± √ 1
x = —————
2
So now we are looking at:
x = ( 15 ± 1) / 2
Two real solutions:
x =(15+√1)/2= 8.000
or:
x =(15-√1)/2= 7.000
What is the inverse of the function shown( in the form of a graph)
Answer:
[tex] y = - 1x + b[/tex]
Step-by-step explanation:
The inverse of a slope is the exact opposite slope of the original. I'll show a function below where you can easily solve future problems if you need to.
[tex] - \frac{1}{m} x[/tex]
m is the slope, so for the equation above, you simply insert the original slope, being 1, in the equation.
[tex] - \frac{1}{1} x \\ - 1x[/tex]
So the inverse slope would be -1.
Answer:1/2x
Step-by-step explanation:
Jack borrowed $1.50 from his friend Jenna every day for five days last week. What rational number represents how much Jack owed his friend last week?
Answer:
$7.50
Step-by-step explanation:
set up an equation: $ x days = total owed
1.50 x 5 = 7.50
What is measure of arc NP?
11. In a swimming race, Yvonne swam 0.18 mile.
David swam 4 times as far as Yvonne. How far
did David swim?
(A) 2.2 miles
B
0.22 mile
C.7.2 miles
D
0.72 mile
Answer: D= 0.72
Step-by-step explanation: Because 0.18 times 4 is 0.72 miles.
Answer:
D. 0.72 miles
Step-by-step explanation:
Since David swam 4 times as far is Yvonne, he swam 4 times more than 0.18. 0.18 times 4 is 0.72. If you want/need to do it in your head, just imagine 0.18 as 18, and that multiplied by 4 is 72. then move the decimal point back over before the 7, to get your answer.
Two of the other choices are clearly wrong because the actual answer is way less than the other choices (except for B). One way to quickly figure out which two (or sometimes three) are wrong is by rounding 0.18 up to 0.2. You can try this quickly because 0.2 is barely bigger than 0.18, and 0.2 is easy to multiply by 4. The answer you would get from multiplying 0.2 is not exactly correct, but gives you a general idea.
you are being deal one card from a standard 52 card deck. what is the probability that you will be dealt a card other than an ace?
The probability of you getting in Ace is 4/52
34
James was participating in a school readathon and his parents agreed to donate $ 2
plus an extra dollar for every book read. The dot plot below shows this:
Searned
10
3
20
340
If James reads more books, the next point marked on the plot will be:
5
Answer:
the next point will be 4, 6
Step-by-step explanation:
if you follow the dots in the line that they make, the next on will be 4, 6
What is the K for this story Problem? John bought 27 baseball cards for $9. How many baseball cards can he buy with $84?
Answer:
210
Step-by-step explanation:
9 divided by 27 = .33333 = .4
you would divide 9 by 27 because if you did 27 divided by 9 he would only have 3 cards
84 divided by .4 = 210
If 3 quarts of paint are needed for 50 ft of fence, how many quarts are needed for 300 ft of fence?
at
Answer:
18
Step-by-step explanation:
First, you would do a proportion
[tex]\frac{3}{50}[/tex]=[tex]\frac{x}{300}[/tex]
Then you would cross multiply, getting 50x=900.
After that, you would do 900/50, which is 18.
To paint 300 feet of fence we need 18 quarts of paint.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, 3 quarts of paint are needed for 50ft of fence.
∴ To paint 1 foot of fence (3/50) quarts of paint are needed.
∴ To paint 300 feet of fence (3/50)×300 = 18 quarts of paint needed.
learn more about the unitary method here :
https://brainly.com/question/28276953
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In triangle ABC, angle BAC = 90
Work out the size of angle DAC AND DCA?
Quick plz:)
Answer:
Easy man it 9999
Step-by-step explanation:
Which equations could you solve using the addition property of equality? Check all that apply.
4+ y = 100
y -4 = 100
4y = 100 4 + 100=y
100 = y - 5
Answer:
4 + y = 96 = 100
y = 104 - 4 = 100
4 y = 25 = 100 4 + 100 = y = 104
100 = y = 105 - 5
Step-by-step explanation:
Plz mark me as brainliest have a good day
The equations could you solve using the addition property of equality is
y- 4 = 100.
We have to apply the property of addition equality
Now,
4 + y = 100
y= 96
and, y -4 = 100
y = 104
and, 4 y = 100
y= 25
and, 100 = y - 5
y= 105
Thus, the required equality is y- 4 = 100.
Learn more about Addition Equality here:
https://brainly.com/question/27281756
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WHO WANTS BRAINLIST??
Answer:
Me please
Step-by-step explanation:
I like ice cream :D
Answer:
I do!!! Please may I get it? If someone else asked and you chose them that's fine!
Step-by-step explanation:
(The upcoming and this sentence is pre-written and copy and pasted in every brainly question or comment I write or answer.) If this answer helped you please consider giving it brainliest.
- •Trix•
( Yes I know my - •Trix• thingy is not my user but its what I would change it to if I could but I can't, please address me as Trix while commenting or talking to me here.)
Please help, I only have 30 minutes left! );
Answer:
(3, -1)
Step-by-step explanation:
Choose all items where the equation matches the given table.
Answer:
Grey, Orange,Green
Step-by-step explanation:
Hope this helps
review the graph. a ship is traveling according to the vector shown. what is the ships directional bearing?
Answer:
D on edge i got it right
Step-by-step explanation:
By reviewing the graph, when the ship is traveling so here the ship's direction should be 60 degrees west.
What is a vector?In terms of mathematics, the vector means the quantity where it does contain both magnitude and direction but does not involved the position. It involved the examples like velocity and acceleration.
According to the given graph, the movement of the ship is in south west direction along with angle 60 degrees
So, here option d is correct.
Learn more about graph here: https://brainly.com/question/18265531
Which of the following is true? (1 point)
Question 19 options:
1)
|–8| < 6
2)
|–6| < |–8|
3)
|8| < |–6|
4)
|–6| < –8
PLS GOD HELP ME
Please help! it's algebra 2! correct answers only!
B.
To create a square trinomial on the left side of the equation, find a value that is equal to the square of half of.
What is the simplified ratio of female to male students in a class, if there are 18 boys and 9 girls?
PLS HELP I ONLY HAVE HR
Question 4 (4 points)
(04.02)
The graph shows the amount of money paid when purchasing bags of candy at the zoo:
A graph is shown. The x-axis is labeled from 0 to 9. The y-axis is labeled from 0 to 10. Four points are shown on the graph on ordered pairs 0, 0 and 1, 2 and 2, 4 and 3, 6. These points are joined by a line. The label on the x-axis is Bags of candy. The title on the y-axis is Total cost in dollars.
What is the cost of one bag of candy? (4 points)
a
$2
b
$4
c
$0
d
$6
Answer:
a $2
Step-by-step explanation:
One of the ordered pairs were (1, 2) which meant that at 1 bag of candy, the total cost in dollars is 2 based on the labelling of the x- and y-axis. Thus, the cost of one bag of candy is $2.
Which of these isn't a proportional relationship? 15:30 & 1:2 3:9 & 9:27 05.10 & 10:20 2:4 & 4:2
Answer:
4:2
Step-by-step explanation:
13. solve
(1 Point)
m/18 = - 1/9
a.) m = -3
b.) m = -4
c.) m = -2
d.) m = -1
Answer:
m = -2
Step-by-step explanation:
m/18 = - 1/9
m = -1/9 * 18
m = -2
A pharmacy purchases 10,000 tablets of medication D for $27,000 and sells the 10,000 tablets for $34,380. The pharmacy has total monthly sales of $648,933, inventory purchases of $466,838, and overhead of $97,000.
• What is the gross margin on medication D?
• What is the gross income for the month?
• What is the net income for the month?
Answer:
nononoonoonononoononon
Step-by-step explanation:
If the measure of angle 5 is (11 x minus 14) degrees and x = 6, which expression could represent the measure of angle 2?
Step-by-step explanation:
what are the expressions?
Pls help- I'm having trouble
What is the value of the expression when a = 4, b = 3 , and c = 10?
3a4b−c
a 1
b 4
c 6
d 12
Answer:
3a4b-c
3(4)4(3)-10
12(12)-10
144-10
=134
Step-by-step explanation:
Answer:
134
Step-by-step explanation:
3×4=12
4×3=12
12×12=144
144-10=134
thats what I got
hope it helps
Please help me answer!
Answer:
B
..................
please help me w this
Answer:
54
Step-by-step explanation:
54
Jorge is running a race. In 23 of an hour he ran 225 miles. At this rate, what distance will Jorge run in one hour?
Answer:
9.7
Step-by-step explanation:
225 divided by 23 equals 9.7
The height h, in feet of a model rocket t seconds after launch is given
by the equation h= 245t - 16t?. As the rocket descends, it deploys
a recovery parachute when it reaches 325 feet above the ground.
Express your final answer to the nearest tenth place.
What is the maximum height of the rocket?
Answer:
h_max = 324.09 ft
Step-by-step explanation:
The correct equation is;
h = 245t - 16t²
We are told that as the rocket descends, it deploys
a recovery parachute when it reaches 325 feet above the ground.
Thus;
245t - 16t² = 325
Thus;
16t² - 245t + 325 = 0
Using quadratic formula, we have the roots as;
t = 1.47s or 13.85s
We will pick the higher value.
Thus;
Maximum height will occur at t = 13.85 s
Thus, plugging in 13.85 for t into h = 245t - 16t², we have;
h_max = 245(13.85) - 16(13.85)²
h_max = 324.09 ft
Nikki drew a rectangle with a perimeter of 18 units on a coordinate grid. Two of the vertices were (4, –3) and (–1, –3). What could be the coordinates of the other two vertices of the rectangle?
A. (4, 12) and (–1, 12)
B. (–1, 1) and (4, 1)
C. (4, 6) and (–1, 6)
D. (4, 7) and (–1, 7)
Step-by-step explanation:
I have read about this in my class
Answer:
ITS a.
Step-by-step explanation:
1000¥ (Japanese Yen) is equivalent to $8.00. A shirt costing 650¥ would cost how many dollars? *
$6.50
$12.30
$5.20
$8.13
Answer:
$5.20 (Have a good day)
Step-by-step explanation:
Answer:6.50
Step-by-step explanation: