Answer:
x = -0.5 or -1
Step-by-step explanation:
Given the quadratic equation;
2x² + 3x + 1 = 0
The standard form of a quadratic equation is ax² + bx + c = 0
Therefore, a = 2, b = 3 and c = 1
Quadratic equation formula is;
[tex] x = \frac {-b \; \pm \sqrt {b^{2} - 4ac}}{2a} [/tex]
Substituting into the equation, we have;
[tex]x = \frac {-3 \; \pm \sqrt {3^{2} - 4*2*1}}{2*2}[/tex]
[tex]x = \frac {-3 \pm \sqrt {9 - 8}}{4}[/tex]
[tex]x = \frac {-3 \pm \sqrt {1}}{4}[/tex]
Simplifying further, we have;
[tex]x = \frac {-3 \pm 1}{4}[/tex]
[tex]x_{1} = \frac {-3 + 1}{4}[/tex]
[tex]x_{1} = \frac {-2}{4}[/tex]
[tex]x_{1} = -0.5[/tex]
To find the value of x2;
[tex]x_{2} = \frac {-3 - 1}{4} \\x_{2} = \frac {-4}{4} \\x_{2} = -1[/tex]
Therefore, the value of x = -0.5 or -1
Select the correct solution for 9x = 81.
O A. x = 72
O B. x =)
O c. x = 9
O D. x = 90
Answer:
c
Step-by-step explanation:
9x=81
9x/9=81/9
x=9
Option C is correct, the solution of 9x = 81 is x=9.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given equation is 9x=81
Nine times of x equal to eighty one.
We have to solve for x
Divide both sides by 9
x=81/9
Divide numerator and denominator by 9
x=9
Hence, Option C is correct, the solution of 9x = 81 is x=9.
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DC= 10 what is the value of AD
Answer:
where is required question. comment me.
6,2,2/3,..
Find the 8th term
Answer:
2/729
Step-by-step explanation:
This is a geometric progression.
[60 points. Help me.]
Monica jogged to her gym and is on her way home. She has walked 2/13 of a mile and has jogged 2/13 of a mile. If the total distance from the gym to Monica's home is 8/13 of a mile, how far from home is Monica now?
A.
5/13 of a mile
B.
4/13 of a mile
C.
9/13 of a mile
D.
7/13 of a mile
Step-by-step explanation:
Total distance = 8/13 mile
Distance left = 8/13 - 2/13 - 2/13 = 4/13 mile
Hence Monica is 4/13 of a mile from home now. (B)
Write the linear equations in slope-intercept form with a slope of 5 and point (2, -20)
Answer:
We conclude that the linear equation in slope-intercept form with a slope of 5 and point (2, -20) is:
y = 5x - 30Step-by-step explanation:
The slope-intercept form of the line equation
[tex]y = mx+b[/tex]
where
m is the slopeb is the y-interceptGiven
The slope m = 5
The point (2, -20)
now substitute (x, y) = (2, -20) and m = 5 in the slope-intercept form of the line equation
y = mx+b
-20 = 5(2) + b
10 + b = -20
subtracting 10 from both sides
10 + b - 10 = -20 - 10
b = -30
Thus, the y-intercept b = -30
so substituting b = -30 and m = 5 in the slope-intercept form of the line equation
y = mx+b
y = 5x + (-30)
y = 5x - 30
Therefore, the linear equation in slope-intercept form with a slope of 5 and point (2, -20) is:
y = 5x - 30Can the sum of 2 positive mixed numbers be less than 3? Explain.
Answer:
No. A mixed number is usually positive and greater than one, so two numbers that would be greater than one could not add up to anything less than three.
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
1[tex]\frac{1}{5}[/tex]+ 1[tex]\frac{1}{5}[/tex] = 2[tex]\frac{2}{5}[/tex]
can someone help please asap
Answer:
1 51 2 18 3 123 4 39
Step-by-step explanation:
If a girl on a bike travelled 2 miles in 15 minutes, how
far will she travel in 1 hour? Show your work!
Answer:
8 miles in an hour
Step-by-step explanation:
well if she went 2 evey 15 minutes, there are 60 minutes in an hour, so 15 times 4 is sixty. 2 times four is 8. she ran 8 miles in an hour.
Answer:
8 miles
Step-by-step explanation:
15 x 4 = 60 = 1 hr
2x4 = 8
You basically times how far the girl tracked in 15 minutes by 4
If 6^ = 1/126 find the value of x
Please ask help with b
9514 1404 393
Answer:
a) x = -3
b) 1/250
Step-by-step explanation:
The applicable rule of exponents is ...
a^-b = 1/a^b
__
a) It is helpful to know that 216 = 6^3.* Then you would realize that ...
[tex]6^x=\dfrac{1}{216}=\dfrac{1}{6^3}=6^{-3}\\\\x=-3[/tex]
If you don't know that, then you can solve the equation using logarithms. Taking the log of both sides, you have ...
x·log(6) = log(1/216)
x = log(1/216)/log(6) = -3
__
b)
[tex]5^{-3}\times 2^{-1}=\dfrac{1}{5^3}\times\dfrac{1}{2^1}=\dfrac{1}{125}\times\dfrac{1}{2}=\boxed{\dfrac{1}{250}}[/tex]
_____
* This would be on your list of cubes of small integers that you might want to memorize, along with squares of numbers less than 20.
Please help! Will Mark brainliest!
Answer:
4.5 inches
Step-by-step explanation:
Sorry if its wrong. I tried.
What is the measure of the angle?
Answer:
umm I dont see where is the angle. but for your answer, it can be obtuse, acute and right. plz show the picture to help you more
Step-by-step explanation:
Using only numbers in the following list,
46
53
89
21
48
47
32
write down
a)
two numbers that add up to 80
1
b)
two numbers which differ by 43
c)
a multiple of 6
Answer:
A) 48,32
B) 89, 46
C) 48
Step-by-step explanation:
Which equations for the measures of the unknown
angles x and y are correct? Check all that apply.
A- x= cos-1[a/c]
B- x= sin-1[c/b]
C- x= tan-1[c/a]
D- x= sin-1[a/c]
E- x= cos-1[c/b]
Answer: B, C, and E
Step-by-step explanation:
I just did the assignment
What Place Value position is the 5 in the number 0.059
Answer:
hundredths I think
Step-by-step explanation:
I did this a few years ago so forgive me if I'm wrong
Answer:
hundredths i think if i'm not mistaking
Step-by-step explanation:
What is (10/8)X2+8X9X3?
Answer:
437/2
Step-by-step explanation:
Answer:
Simplify the expression.
Exact Form:
437 /2
Decimal Form:
218.5
Mixed Number Form:
218 and 1 /2
Step-by-step explanation:
Have a nice day! I hope this helps!
Please help!!! Will give brainliest!!!
Answer:
12 shares
Step-by-step explanation:
what is the answer?????
Answer:
Step-by-step explanation:
1/4
Answer: It would be 4
So what's happing in the table, is that numbers are being multiplied by 4.
1x4=4
2x4=8
3x4=12
4x4=16
hope I helped :)
what is one fourth divided by 6
Answer:
Here is decimal form : 0.04166666666
And here is fraction form :): 1/24 Hope this helps!
Step-by-step explanation:
how to calculate 1/4 divided by 6. I will give you the answer in fraction form and in decimal form.
Here is 1/4 divided by 6 displayed mathematically in colors:
1 /4 ÷ 6
The numbers in 1/4 divided by 6 are labeled below:
1 = numerator
4 = denominator
6 = whole number
To make it a fraction form answer, you keep the numerator and multiply the denominator by the whole number to make a new denominator:
1 /4 x 6 =
1 /24
Thus, the answer to 1/4 divided by 6 in fraction form is:
1 /24
DECIMAL FORM :)
to make the answer to 1/4 divided by 6 in decimal form, you simply divide the numerator by the denominator from the fraction answer above:
1/24 = 0.0417
The answer is rounded to the nearest four decimal points if necessary.
Hurry Timed!!! PLEASE ANSWER
Answer:
480
Step-by-step explanation:
time all of them
Factor
30x - 18
please answer :)
A nicotine patch on the skin absorbs nicotine directly into the bloodstream some stronger patches contain 20 mg nicotine how many patches would kill half of people weighing 60 kg.
(Please answer)
Find the missing values in the ratio table. inches 2[][]
years 3 1 8
Answer:
Enter the values in ratio format.
8 : x = 4 :2
change the ratio format to division format
8/x = 4/2
8/x = 2/1
cross multiply the values
2x = 8
x = 4
hence the 8 pencils would cost 4$
Step-by-step explanation:
The missing values in the ratio table will be 0.666 and 5.33 inches.
What is the ratio?It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.
Suppose the missing values are x and y.
Comparing two numbers by dividing them is how ratios work. Your formula would be A/B if you were contrasting one data point (A) with another data point (B). By doing so, you are multiplying information A by information B.
As the ratio of the terms is equal. The value of x and y is obtained as,
2/3 = x/1
x=2/3
x=0.66 inches
In order to obtain y,
2/3 = y/8
y=2×8/3
y=16/3
y=5.33 inches.
Thus, the missing values in the ratio table will be 0.666 and 5.33 inches.
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You have to substitute 3x+2y=12
Write the phrase as an expression. Four less than three times a number b.
Answer:
3b - 4
Step-by-step explanation:
Answer:
3b-4
Step-by-step explanation:
I'm big brain.... can I get brainliest
Find two consecutive whole numbers that 54 lies between.
The two consecutive whole numbers that 54 lies between are 27 and 28, since 54 is greater than 27 and less than 28.
What is division?The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into the same number of parts.
To find two consecutive whole numbers that 54 lies between, we can start by dividing 54 by 2 and rounding down to the nearest whole number since we want two consecutive numbers that are less than and greater than 54:
54 ÷ 2 = 27
So the two consecutive whole numbers that 54 lies between are 27 and 28, since 54 is greater than 27 and less than 28.
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(Look at picture plz)
Answer:
1. 1
2. 28
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :D
y is the hourly wage I must pay, and x is the # lifeguards I want to hire
y = 10 - ½ x
Answer:
x = 20
Step-by-step explanation:
substitute y= 0 first and multuply both sides move the variable to the left.
Simplify: (2 – 8)^2 - |2 - 8|
What is the constant of proportionality in the following equation?
y=54.3x
Answer:
54.3
Step-by-step explanation:
which statement about these triangles is true?
Answer:
I think it's D
Step-by-step explanation:
Answer:
i think it's a or d
but d is more have percent
