Consider the quadratic equation x^2 +7x+8=0. Which of the following is the correct form after substituting a, b, and c into the
Quadratic Formula?
Answer:
ax²+bx+c=0
Being the standard formula
Step-by-step explanation:
By direct substitution
a=1
b=7
c=8
If the quadratic equation x² +7x+8=0 then the correct form after substituting a, b, and c into the Quadratic Formula is x=-7±√7²-4(1)(8)/2(1)
What is quadratic equation?A quadratic equation is a second-order polynomial equation in a single variable x , ax²+bx+c=0. with a ≠ 0 .
The given quadratic equation is x² +7x+8=0.
The quadratic equation standard form is ax²+bx+c=0
When we compare both the equations
The value of a is 1, b is 7 and c is 8
x=-b±√b²-4ac/2a
x=-7±√7²-4(1)(8)/2(1)
=-7±√49-32/2
x=-7±√17/2
Hence, if the quadratic equation x² +7x+8=0 then the correct form after substituting a, b, and c into the Quadratic Formula is x=-7±√7²-4(1)(8)/2(1)
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what do you call a polygon with nine sides?
a.quadrilateral
b.pentagon
c.hexagon
d.nonagon
Answer: nonagon
Step-by-step explanation: quadrilaterals: a shape that has four sides
hexagon: a shape with 6 sides
pentagon: a shape with 5 sides
nonagon: a shape with 9 sides
So the answer is D
What is the MODE of the data - (12, 8, 6, 12, 16, 12) *
help plsssss
Answer: Mode = 12
Explanation: The mode is the most frequent value, so it is the value that shows up the most. In this case, that would be the value "12" since it shows up three times (while the other values only show up once).
Answer:
12
Step-by-step explanation:
For future reference mode means MOST. So in this data, number 12 is repeated the most. That would mean the MODE is 12.
Good Luck!!!
Write a number less than 50 that has at least six factors.
List at least six factors of the number you choose.
Answer:
the number can be 12
1 x 12 = 12
2 x 6 = 12
3 x 4 = 12
solve for x
4(x+7)+98x+45+7y=567
Subtract 73 from both sides of the equation.
102x+7y=567-73
Subtract 7y from both sides of the equation.
102x=567-73-7y
Subtract 73 from 567
102x=494-7y
Divide each term by 102 and simplify
Divide each term 102x=494-7y by 102
[tex]\frac{102x}{102} =\frac{494}{102} +\frac{-7y}{102}[/tex]
Cancel the greatest common factor which is 102x/102
[tex]\frac{102x}{102} =\frac{494}{102} +\frac{-7y}{102}[/tex]
Divide x by 1[tex]x\frac{492}{102} +\frac{-7y}{102}[/tex]
Cancel the common factor is 494 and 102
Factor 2 out of 494
[tex]x\frac{2(247)}{102} +\frac{-7y}{102}[/tex]
Factor 2 out of 102
[tex]\frac{2*247}{2*51} +\frac{-7y}{102}[/tex]
Cancel the common factor which is 2
Rewrite the expression.[tex]x=\frac{247}{51} +\frac{-7y}{102}[/tex]
Move the negative in front of the fraction
[tex]\frac{247}{51} -\frac{7y}{102}[/tex]
We randomize a sample for all the following reasons EXCEPT:
A. to generalize our results to the population
B. to ensure a representative sample
C. to ensure the sample is not too large
D. to eliminate selection bias
Answer:
C
Step-by-step explanation:
I'll give brainliest
Step-by-step explanation:
Given
< a = 145°
< a + < b = 180° { Being supplementary angles }
145° + < b = 180°
< b = 180° - 145°
< b = 35°
Hope it will help :)❤
please help and show the work, no links :)
Which statement best describes the function represented by the graph?
The function is increasing on the interval (-2, 0)
and decreasing on the interval (0, 0).
10
8
The function is decreasing on the interval (-0, 0)
and increasing on the interval (0.00).
6
2
The function is increasing on the interval (-0, 0).
2 4 6 8
-4-20
-2
4
The function is decreasing on the interval
(-00, 00
My Progress
Answer:
this is i-ready, right?? if so I cant provide any info
Step-by-step explanation:
my bad if it's not
Write an equation of the line below
Answer:
y = 4/5x - 2
Step-by-step explanation:
To create an equation with just a line compare two points on the graph and see how far the x and y points are on the graph then put them into a fraction with y over x then find the y intercept or find where the x coordinate equals 0 in this case it was (0, -2). Now put it all together:
y = mx + b
mx = comparison of two points
b = y intercept
Someone please help me
ofc i can help! hold up m y mom is vcalling
Evaluate the expression 7×18+45÷3×2
Answer:
156
Step-by-step explanation:
7 * 18 = 126
126 +45 / 3 * 2
45 / 3 = 15 * 2 = 30
126 + 30 = 156
Answer:
156
Step-by-step explanation:
In circle R with QRS=90 and QR= 3 units find the length of arc QS round to the nearest hundredth
Hello, I Am BrotherEye
Answer:
27.92 units
Step-by-step explanation:
Radius (qr) = r = 16 units
<QŘS = θ = 82°
Length of an arc = (Θ / 360) * 2πr
L = (θ / 360) *2πr
L = (82 / 360) * 2π * 16
L = 0.2777 * 100.53
L = 27.917 units
L = 27.92 unit
Best Of Luck
~
BrotherEye
HELP NO DECIMALS!!!!!!!! Please I need this done almost due....
Answer: 432cm^3
Step-by-step explanation:
what is the cost of 20pens is rs 1200,what is the cost of one pen
Answer:
rs 60
1200/20=60......
Item 6
A truck carries a load of gravel with a mass of 3,200 kilograms. The truck unloads 976 kilograms of this gravel at a construction site.
How many more kilograms of gravel are left on the truck?
please help!!
Answer: There would be 2224 kilograms left in the truck
answers are
60m cubed
360m cubed
1130m cubed
2260m cubed
Answer:
≈ 1130 m³
Step-by-step explanation:
The volume (V) of a cylinder is calculated as
V = πr²h ( r is the radius and h the height )
Here r = 6 and h = 10 , then
V = π × 6² × 10 = π × 36 × 10 = 360π ≈ 1130 m³
i need help on this one too
Answer:
V = 235.5
or V = 18π
Step-by-step explanation:
V=πr^2h
Volume of a cylinder is (pi)(radius)(radius)(height)
V = (3.14)(3)(3)(2)
V = 56.52
Or, since it said you can leave it as pi,
V = 18π
Please let me know if you have questions.
A shirt originally cost $41.10, but it is on sale for $36.99. What is the percentage decrease of the price of the shirt? If necessary, round to the nearest percent. A. 10% B. 90% C. 11% D. 8%
Answer:
10%
Step-by-step explanation:
The first step is to calculate the decrease
Original price= $41.10
New price= $36.99
= 41.10-36.99
= 4.11
4.11/41.10 × 100
= 0.1×100
= 10%
Hence the percentage decrease is 10%
Kate poses a $20 item at the store she uses a coupon to receive a 15% discount if you pay the 6% sales tax on the item how much did she pay for the item
Answer:
the answer is
18.02 dollars in total
can someone pls help me answer this, step by step would be helpful but u don’t have to. ty! :)
Answer:
The area is: 4x^5 + 8x^3
Equation: (2x^3 + 4x) * 2x^2
^ = exponent
* = multiply
Step-by-step explanation:
When you try to find the rectangle of an area, the formula is:
Length * Width
In this case, the length is:
2x^3 + 4x
And the width is:
2x^2
Now let's solve the equation.
(2x^3 + 4x) * 2x^2
We need to combine like terms
2x^3 + 2x^2 = 4x^5
After evaluating the equation:
4x^5 + 8x^3
The area is: 4x^5 + 8x^3
hope this helped :)
Get 100 points for absolutely nothing thank me later
Answer:
thanks
Step-by-step explanation:
Answer:
Thank you so much !
You're the best :)
PL PLZ HELP 50+ POINTS PLZ ACTUALLY 100+ POINTS IF YOU HELP!!!!!!! ALSO, BRAINLIEST FOR THE BEST ANSWERS FOR ALL OF THEM!!!!
Answer:
do a unicorn or maybe a jsut a big star or even do the big dipper its a easy constellation
Step-by-step explanation:
Tatiana practiced a total of 12 hours last week to prepare for her gymnastics meet. The line plot shows how long she practiced on the first six days of the week. If Tatiana practiced every day last week, how long did she practice on the last day?
Answer:
nigrto
Step-by-step explanation:
-1 2/3 ÷ -2 1/5
answer this and you get 60 points pls hurry
Answer:
0.75757575757
Step-by-step explanation:
What is the constant of proportionality in the table below?
Answer:
3
Step-by-step explanation:
The constant of proportionality (or the slope) is 3. Observe that if x increases by 2 (from 1 to 3), y increases by 6 from 3 to 9, so that m = rise/run = 6/2, or 3.
Find the value of x for arc AB = 52
degrees and arc CD = 38 degrees.
Select one:
O A. 31.5 degrees
O B. 90 degrees
O C. 45 degrees
D. 30 degrees
Answer:
The answer of this question is 45°
Trigonometry, can anybody help??
Answer:
angle B: 39
AC: 7.288
AB: 11.58
(note: you cut off the part about rounding so make sure that it's rounded correctly before you put in your answer)
Step-by-step explanation:
To solve this we will use SOH, CAH, TOA
we have the angle and the one opposite to it which means we can use either SOH or TOA
let's use TOA
tan(51)=(9/x)
x= 7.288
We can now use pahtagaryous theroem to solve for the hyptonouse
we have
9²+7.288²=C²
C=11.58
Finally, to find angle B we will recall that the angles of a triangle must add to 180.
51+90+a=180
a=39
Find the length of side x in simplest radical form with a rational denominator.
45°
X
45°
V3
Answer:
[tex] \sqrt{6} [/tex]
Step-by-step explanation:
[tex] \sin \: 45 \degree = \frac{ \sqrt{3} }{x} \\ \\ \frac{1}{ \sqrt{2} } = \frac{ \sqrt{3} }{x} \\ \\ x = \sqrt{2} \times \sqrt{3} \\ \\ x = \sqrt{2 \times 3} \\ \\ x = \sqrt{6} [/tex]
Answer:
√6
Step-by-step explanation:
Find the length of side x in simplest radical form with a rational denominator.
√6
Use a calculator to approximate the value of this number to three decimal places.
Answer:
28.478
Step-by-step explanation: