Answer:
the tank is draining at a rate of 1 gallon per minute and 30 seconds so it would take 9 minutes and 30 seconds for it to drain completely
Step-by-step explanation:
Solve x2 + 12x + 25 = 17 by completing the square. Select all the possible solutions.
A.
6+√7
B. 6+277
C. 6-2/7
D. 6-V7
E 6-287
Answer:
A,C,D I think.
Step-by-step explanation:
The solution to the quadratic equation is x = -6 ± 2√7
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. Because it is a second-order polynomial equation, the fundamental theorem of algebra guarantees that it has at least one solution. The solution may be real or complex.
The roots of the quadratic equations are
x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )
where ( b² - 4ac ) is the discriminant
when ( b² - 4ac ) is positive, we get two real solutions
when discriminant is zero we get just one real solution (both answers are the same)
when discriminant is negative we get a pair of complex solutions
Given data ,
Let the quadratic equation be represented as A
Now , the value of A is
x² + 12x + 25 = 17
Subtracting 17 on both sides , we get
x² + 12x + 8 = 0
And , roots of the quadratic equations are
x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )
On simplifying , we get
x = ( -12/2 ) ± √ ( 12 )² - 4 ( 1 ) ( 8 ) / 2
x = -6 ± √ ( 144 - 32 ) / 2
x = -6 ± √112/2
And , the value of x = -6 ± 2√28/2
x = -6 ± 2√7
Hence , the solutions are x = -6 + 2√7 and -6 - 2√7
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A little help please?
Answer:
angle B equals angle E
Step-by-step explanation:
hope this helps!
Dan and David are marking exam papers. Each set takes Dan 35 minutes and David 1 hour. Express the times Dan and David take as a ratio.
Give your answer in its simplest form.
Answer:
Step-by-step explanation:
1 hour =60 minutes
Ratio =35
60
= 7
12
Answer=7
12
Help fast! Determine which lines, if any, must be parallel. Check all that apply.
Answer:
a b m n
Step-by-step explanation:
Which is the correct angle and side classification for the given triangle
A. Acute Isosceles
B. Obtuse scalene
C. Equilateral Equiangular
D. Right Isosceles
If the perimeter of a square is 120f+80 inches, what is the length, in inches, of each side of the square?
Answer:
30f + 20
Step-by-step explanation:
A square has four sides, all of equal length. If we call that side length x, then the perimeter - the total length around the square - is 4x. To find the side length given the perimeter then, we can simply divide the perimeter by 4.
Our perimeter here is 120f + 80, and dividing each term by 4 gives us a side length of 30f + 20.
Simplify the expression
- 7x-2y=-13
x - 2y = 1
Solve by substitution
multiply and subtract and do the x y across
Answer:
y = 3/8, x = 7/4
Step-by-step explanation:
x = 2y+1
-7(2y+1) - 2y = -13
-14y - 7 - 2y = -13
-16y - 7 = -13
-16y = -6
y = 3/8
Plug the value for y into one of the equations to solve for x
what is negative 2y minus y
Answer:
-3y
Step-by-step explanation:
-2y-y=-3y
Answer:
-3y
Explanation:
please help, x/25 > 5 solve for x
Answer:
x>125
Step-by-step explanation:
Answer:
x>125
Step-by-step explanation:
What is the conjugation for bailar using vosotros???
(and yes ik this is not a math question)
Answer
Indicative mode
Step-by-step explanation
Present/ Preterite/ Imperfect/ Conditional/ Future
bailáis / bailasteis / bailabais / bailaríais / bailaréis
can so.one help me with these 2 questions please
Answer:
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
eeeeeeeeeeeeeeeeeeeeeeStep-by-step explanation:
You are planning the running shoe merchandise levels for your shoe store. Last year, your running shoe sales were down 10% from the previous season. The store had projected sales of 900 pairs of running shoes. Calculate the number of units the 10% sales decline represents.
Answer:
90
Step-by-step explanation: by taking 10% off of 900, you get 810; meaning 90 was subtracted
The number of units the 10% sales decline represents is 90
what is percentage?In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%"
Given here projected sales = 900 but the actual sales is 10% less than this amount , thus actual sales = 900 - 10% of 900
= 900 -( 10/100 )×900
= 900 - 90
= 810
Hence, the number of units the 10% sales decline represents is 900-810 =90
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EFGH is a parallelogram. Find the measure of FG.
4w + 4
E
F
-
3z +8
52- 14
H
G
2 w + 22
The measure of FG is
Answer:
41
Step-by-step explanation:
FG = EH ( being opposite sides of parallelogram)
3z + 8 = 5z - 14
5z - 3z = 8 + 14
2z = 22
z = 11
Now
FG = 3z + 8 = 3 *11 + 8 = 33 + 8 = 41
Hope it will help :)❤
Can someone help me determine which graphs are functions and which are not please
I will give brainiest answer!!
Please Help Asap!!!!!
Answer:
1 , not a function
2. function
3. not a function
4. not a function
5. function
6. function
7. not a function
8. function
9. not a function
10. not a function
Marta has a bucket of 12 colored ping pong balls, including 4 yellow, 6 orange, and 2 white. When reaching into the bucket, she expects to
select an orange ball 1/2 of the time.
After selecting a ball and replacing it, she repeats this process six times and records the results below
Answer: 6 blue
Step-by-step explanation: 36 divide by 6
Answer: A she did not perform enough trials
Step-by-step explanation:if marta wants her results to match her expectations she needs to perform more trials
What is the equation of the line that passes through the point (6, 8) and has a slope 1/2
Answer:
y=1/2x+5
Step-by-step explanation:
Plug it into the formula for a point and a slope.
(y-(y(subscript 1)))=(m)(x-(x(subscript 1)))
Y-8=1/2(x-6)
Then multiply the 1/2 to the x and -6. After you do that, move everything so that it has y by itself on the left. Your ending should be y=1/2x+5.
What is the area of triangle AOB? *picture attached* show work also please
Answer:
The area of the traingle AOB is 30 (Rounded up result)
Step-by-step explanation:
7.8 cm and 10 cm.
10/2= 5 cm
Then Reversed Pitagora's Formula:
Square root of the calc "(7.8^2)-(5^2)" = 60,84 - 25 = 35,84
Then Square root of 35, 84 is 5,98.
5.98 is the height of the triangle AOB
With the height we can calculate the area
We use the formula (B*H)/2
So is (10*5,98)/2, that makes 29,9
Just round up to 30 and that's the area.
Which expression(s) is (are) equivalent to 6(3 - 2r) ? Select ALL that apply . 1. 6(3) - 6(2r) 2.6(3) + 6(2r) 3.63 - 62r 4. 3(3 - 2r) + 3(3 - 2r) 5. 18 - 12r 6. 18 + 12r
Answer:
For which points is the Y coordinate greater than 0
Step-by-step explanation:
For which points is the Y coordinate greater than 0
Which answer choice is 0.92 written as a percent? *
92%
9.2%
.092%
920%
Answer:
920
Step-by-step explanation:
cause you move the decimal over two places
Evaluate 9 + 4 when m = 3.
—
m
I assume the equation is 9+4/m
The answer would be 13/3 as an improper fraction, 4 1/3 as a mixed number, or 4.3 with a repeating 3 as a decimal
Find the area of the shaded region i 31 mm 7. 13 mm 16 mm 18 mm
Answer:
I___
Step-by-step explanation:
If the original volume of a cone is 32cm^3 and the height is tripled, what is the resulting volume of the new cone?
Answer
A) 288cm^3
B) 192cm^3
C) 864cm^3
D) 96cm^3
Answer:
D
Step-by-step explanation:
it's matching Please help will give brainliest if correct
Answer:
the goes with the first one
the second one goes with the second one
the third one goes with the third one
Step-by-step explanation:
trust they are all correct
Determine the domain of the following graph:
Answer:
Step-by-step explanation:
The domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.
how many numbers bewteen 50 and 150 have at least one digit that is 2
Answer:
52 62 72 82 92 102 112 120 121 122 123 124 125 126 127 128 129 132 142
there are 19.
Step-by-step explanation:
Answer:
there are nineteen numbers
Maya is building a circular pool. The radius of the pool will be
7 feet. She will put a cover on the pool and build a fence around
the pool. How much material will she need to cover the top of
the pool?
10.99 ft.
153.86 ft.
21.98 ft.
43.96 ft.
Answer:
153.86 ft. approx.
Step-by-step explanation:
Step one:
given data
The radius of the pool will be 7 feet
r= 7 feet
Required
The area of the material needed to cover the top of the pool
Step two:
the expression for the area is
A= πr^2
A= 3.142*7^2
A=3.142*49
A=153.95 ft
Which of the following is the best approximation of the volume of the cylinder below?
Answer:
B
Step-by-step explanation:
[tex]v = \pi {r}^{2} h \\ = 8 \\ v = \pi {8}^{2} \times 3 = 3.14 \times 64 \times 3 = 602.88 = 602.9[/tex]
The volume of the cylinder is 2411.5 cm³ in the given figure. which is the correct answer would be an option (A).
What is the volume of a cylinder?The volume of a cylinder is equal to the product of the area of the circular base and the height of a cylinder.
V = πr²h
where 'r' is the radius of the base (circle) of the cylinder
'h' is the height of the cylinder
As per the given figure,
The radius of a cylinder is 16 cm and the height of the cylinder is 3 cm.
The volume of a cylinder = πr²h
The volume of a cylinder = π(16)² × 3
The volume of a cylinder = 3.14(256) × 3
The volume of a cylinder = 2411.5 cm³
Thus, the volume of the cylinder is 2411.5 cm³ in the given figure.
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Solve the equation for m:
2m +4
———— = W
8
A. m = 4w - 2
B. m = 4w - 8
C. m = 2w - 4
D. m = 8w-4
Answer:
2m +4 =8w
2m = 8w -4
m=8w-4 / 2
m= 4w - 2
therefore, option A is the answer.
Which calculation and answer show how to convert 3/12 to a decimal
Plz help ASAP
Answer:
Its C
Step-by-step explanation:
It is C becuase when converting a fraction to a decimal, you just divide the numerator by the denominator
Basically solve the fraction
3/12=1/4
1/4 is a bencmark so right away you should know that should equal to 0.25 since its a quarter.
Or you can always look it like this
3 is the numerator
the “/“ between is basically ”divided by”
And the 12 is the denominator
Now read the equation in that order
3/12= 3 DIVIDED BY 12
There you go!