The quadratic equation numerically (using tables of x- and y- values).
Correct option: (a). The value of x are x = -1 and x = 3.
What is quadratic equation?A quadratic equation is a second-order polynomial equation in a single variable x with the formula; ax² + bx + c = 0, where a 0. It has at least one solution since it is a second-order polynomial equation, which is guaranteed by the algebraic basic theorem. The answer could be simple or complicated.
The given quadratic equation is:
x² - 3 = 2x
or, x² - 2x - 3 = 0
or, x² - 3x + x - 3 = 0
or, x (x - 3) +1 (x - 3) = 0
or, (x - 3) ( x +1 ) = 0
or, x = +3 , -1
The value of x are x = -1 and x = 3.
To know more about quadratic equation refer to:
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In circle S with mZRST = 78 and RS = 20 units find area of sector RST. Round
to the nearest hundredth.
Find the area of each figure. A = _ in²
Answer:
1824in^2
Step-by-step explanation:
area of rectangle:
L x W = A
32 x 48 = 1539
area of triangle:
(L x W) / 2 = A
(48 x 12) / 2 = 288
add:
1539 + 288 = 1824in ^2
-2x + y=-15. y=5x solved by substitution
Answer:
−
2
+
=
−
1
5
=
5
Step-by-step explanation:
5x= answer
Which operation would help solve for t?
T-13=35
Answer:
t = 48
Step-by-step explanation:
⊕║Using Sampling to Predict Lesson 10-5║ ⊕
To determine how many students at a middle school bring their lunch from home, all the students on one school bus are surveyed. identify if this is BIASED OR UNBIASED. Explain your reasoning!!
A board game has two spinners. The first spinner has 4 equal areas labeled 1, 2, 3 and 4. The second
spinner has 3 equal areas that are labeled: Move Ahead, Move Back, and Do Not Move. What is the
probability the first spinner will land on a 2 and the second spinner will land. on Move Back? Pls help I’m begging u pls I need this pls help have a good day pls help
F.1/2
G.1/4
H.1/8
J.1/12
Answer:
J
Step-by-step explanation:
prob of landing 4 x prob of landing move back
1/4 x 1/3 = 1/12
1/3x + 2 =4 I need it ASAP
Answer:
x=1/6 or 0.16
Step-by-step explanation:
x has to be whatever makes the equation true.
does 1/3 +2= 4 alone no does it = 4 when you do the 1/3(1/6) yes
Cassie paid $276.45 for 5 months of cell phone service. At that rate, how much will Cassie pay for a full year of cell phone service?
NO ANSWERS FROM UNKNOWN FILES PLEASE OR I'LL REPORT IT!!!
Which category do both of these shapes belong to
Answer:
D. Parallelogram
Step-by-step explanation:
Answer:
The answer is Parallelgram(D)
two pairs of parallel sides in a quadrilateral
hope it helps...
A garden is in the shape of a circle with a radius of 10 feet. Edging is place around the garden. How much edging, in feet, is needed to
go around the garden? Round your answer to the nearest whole number. Use 3. 14 for TT.
please!! I need it right jnow
Answer:
62.8 ft (of edging)
Step-by-step explanation:
We need to find the circumference of this circle, using C = 2(pi)r.
Here, C = 2(3.14)(10 ft) = 62.8 ft (of edging)
Answer:
63 feet is needed to go around the garden.
Sketch the graph of y=-2x² + x + 1 using your graphing calculator. What are the x-intercepts of this graph?
a. (1, 0) and (-0.5, 0)
c. There are no x-intercepts
b. (-2.5, 0) and (-2,0)
d. (-1.5, 0) and (-0.5, 0)
Please select the best answer from the choices provided
A
B
0
D
calculeaza
2+(8-6)=
(9-7)+5=
10-(1+8)=
(3+7)-9=
(1+2+3)-5=
10-(2+3+4)=
Answer:
1. 2+(8-6)= 4
2+2=4
2. (9-7)+5= 7
2+5=7
3. 10-(1+8)= 1
10-9=1
4. (3+7)-9= 1
10-9=1
5. (1+2+3)-5= 1
6-5=1
6. 10-(2+3+4)= 1
10-9=1
Can someone put true or false? Please make sure you answer is correct and label them like this:
1. answer here
2. answer here
3. answer here
4. answer here
(actually put the answers) will mark as brainly if it is helpful to me. Ty
whats the square footage of 10 by 10
HELP PLEASE! MATHHHHGGKSNSJSJ
Answer:
192y16
Step-by-step explanation:
mark me brainlist
(3,3) (3,3) endpoints of a vertical line, a horizontal line, or neither?
Answer:
neither
Step-by-step explanation:
the endpoints are the same so it would be neither because it's a point not a line.
Which of the following sequences of transformations maps KLMN onto ABCD
Answer:
The answer is neither.
Step-by-step explanation:
Just did the test on Khan.
mark the points on the graph !!! please help
Answer:
Go to an online grapher called desmos . com where you can graph and get the answer! The website is used in khan academy
Step-by-step explanation:
pls help pls help plsssssss
For the 1st question your just going to
Please answer now! i will mark brainliest!
Answer:
I would round to 3, so the length of the sidewalk would be about 8 x 3 = 24 feet.
Step-by-step explanation:
[tex]2\frac{5}{6}[/tex] is closer to 3 and if you convert it to decimal which will be 2.83 with a bar on top of 3, it's still close to 3.
Calculate the area of the shape below.
Answer:
A = 24
Step-by-step explanation:
Area Formula for Triangle: A = 1/2bh
A = 1/2(4)(12)
A = 1/2(48)
A = 24
please help urgent!!!!
Answer:
1
Step-by-step explanation:
see attached for more information
hope it's helps
1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
5 + 8 =
The price of an item has risen to $184 today. Yesterday it was $80. Find the percentage increase.
COMMON CORE REVIEW
1. Find the percent of change from 32 feet to 79 feet. Round to the nearest tenth, if necessary. Then state whether the percent of change is percent of increase or percent of decrease.
2. Factor this expression: 27+108n
3. Factor this expression: 56x + 16
THANKS AGAIN!!
Answer:
146.9
Step-by-step explanation:
I'm not sure of the answer but if I'm wrong tell me I'll continue trying it is a pleasure to help you.
Which statement must be correct?
A.
B.
C.
D.
Answer:
A suits the most
Step-by-step explanation:
Answer:
D. RS intersects PQ at point R
Step-by-step explanation:
jenny got sum chiken nuggies and she ate 4 and had 16 left how many nuggies did she have
I need help on homework its due tomorrow
Can someone help me with this its preatty easy
Answer:
31,400
Step-by-step explanation:
Hope this helps and have a wonderful day!!!
A research study examined the blood vitamin D levels of the entire US population of landscape gardeners. The population average level of vitamin D in US landscapers was found to be 30.8 ng/mL with a standard deviation of 4.371 ng/mL. Assuming the true distribution of blood vitamin D levels follows a normal distribution, if you randomly select a landscaper in the US, what is the likelihood that his/her vitamin D level will be between 36.84 and 39.73 ng/mL
Answer:
0.0631 = 6.31% probability that his/her vitamin D level will be between 36.84 and 39.73 ng/mL
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
The population average level of vitamin D in US landscapers was found to be 30.8 ng/mL with a standard deviation of 4.371 ng/mL
This means that [tex]\mu = 30.8, \sigma = 4.371[/tex]
What is the likelihood that his/her vitamin D level will be between 36.84 and 39.73 ng/mL?
This is the pvalue of Z when X = 39.73 subtracted by the pvalue of Z when X = 36.84.
X = 39.73
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{39.73 - 30.8}{4.371}[/tex]
[tex]Z = 2.04[/tex]
[tex]Z = 2.04[/tex] has a pvalue of 0.9793
X = 36.84
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{36.84 - 30.8}{4.371}[/tex]
[tex]Z = 1.38[/tex]
[tex]Z = 1.38[/tex] has a pvalue of 0.9162
0.9793 - 0.9162 = 0.0631
0.0631 = 6.31% probability that his/her vitamin D level will be between 36.84 and 39.73 ng/mL