Answer:
( − 1 , ∞ )
Step-by-step explanation:
( − 1 , ∞ )
Solve the equation
16x2 + 4x + 1 =0
Answer:
X= -33/4
Step-by-step explanation:
If $a$, $b$, $c$, and $d$ are replaced by four distinct digits from $1$ to $9$, inclusive, then what's the largest possible value of the difference $a.b - c.d$ ?
Answer:
Correct answer is 18.3Dollar replacement 70Step-by-step explanation:
Correct answer
Given that a, b, c, and d are different numbers (from 1 to 9), we are to find the largest possible value of a.b + c.d.
This problem can be answered by trial and error and with some logic. Clearly, a to d cannot be at the lower end of the values (1 to 5). Since the digits must be different, it can be a combination of digits from 6 to 9.
It is rather tempting to say that the 9.8 + 7.6 would yield the highest possible sum (=17.4) but this is incorrect. Since it is the sum of two numbers with a decimal, we have to maximize on the one-digit first before maximizing the tenths digit. Therefore: the combination of numbers must then be:
9.7 + 8.6 which results to 18.3
9.6 + 8.7 yields 18.3 as well.
Dollar replacement
For the value of the difference to be largest, the minuend should be maximum(most possibly) and the subtrahend should be minimum
[in A-B=X, A is minuend and B is subtrahend ]
So, $a.b should be the maximum. as there is a condition that 4 digits should be distinct, the product will be maximum if we choose 2 maximum valued numbers from the given numbers. so, one of them should be 9 and the other should be 8.
Therefore, $a.b=9*8=72
As mentioned above, c.d$ should be minimum. this will be possible only when we choose 2 minimum valued numbers from the given numbers. so, one of them should be 1 and the other should be 2.
Therefore, c.d$ = 1*2 = 2
Hence, the difference = 72-2 = 70
Thus, the largest possible value of the difference $a.b - c.d$ = 70
Answer:
8.6
Step-by-step explanation:
The units digits matter most, so we make a as large as possible (a=9) and make c as small as possible (c=1). Then we can use any of the digits from 2 through 8. We still want b as large as possible and d as small as possible so we set b=8 and d=2. This gives a maximum possible difference of 9.8 - 1.2 = 8.6.
I hope this helped!
17. Stella is competing in a diving competition. Her height in feet above the water is
modeled by the function h=-16t? + 8t + 48, where t is the time in seconds after she jumps
from the diving board. At what time will Stella land in the water? (Round to the nearest
hundredth, if necessary.)
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Answer:
after 2 seconds
Step-by-step explanation:
We want to find t such that h = 0.
0 = -16t² +8t +48
0 = 2t² -t -6 . . . . . . . divide by -8
0 = (t -2)(2t +3) . . . . factor
The only positive solution is t = 2, which makes the first factor zero.
Stella will land in the water at t = 2 seconds.
What is the equation of the circle, with center (4, 2) and radius 5 units?
Answer:
Step-by-step explanation:
Let us begin by just getting the equation of the circle first.
(x - 4)^2 + ( y - 2)^2 = 5^2
(x - 4)^2 + ( y - 2)^2 = 25
Now I'm going to graph that equation and discuss it here.
I have graphed the second equation above.Notice that the center is at (4,2) just as the question requested.A second point was put at (4,7). That was to show you that the radius is 5 units. You can calculate that it is 5 units by noticing that 7 - 2 = 5 So the distance from the center to (4,7) is 5 units which is the amount of the radius.Notice that the numbers representing the center have been reversed in sign. That is always done for a circle. The center's coordinates are always the negative of the coordinates given. You will be told why later.N
A wheel of diameter 49 cm made some complete turns and covered a distance of
924 cm. How many complete turns did it make? (Take T = ..)
22
49 cm
-924 cm
Card
22
Answer:
6turns
Step-by-step explanation:
Circumference= 1turn
Circumference=πd
22/7 × 49
=154cm
1turn =154cm
?=924cm
924÷154=6turns
Click the score on the graph where you think the
balancing point would be for this data.
Answer:
The balancing point is 23
Step-by-step explanation:
Given
The above graph
Required
Determine the balancing point
This simply means that we calculate the mean.
From the above graph, we have:
[tex]\begin{array}{cc}x & {f} & {21} & {3} & {22} & {5} & {28} & {1} & {29} & {1}\ \end{array}[/tex]
So, the mean is:
[tex]\bar x = \frac{\sum fx}{\sum f}[/tex]
[tex]\bar x = \frac{21*3+22*5+28*1+29*1}{3+5+1+1}[/tex]
[tex]\bar x = \frac{230}{10}[/tex]
[tex]\bar x = 23[/tex]
Hence, the balancing point is 23
Suppose the probability of two people in your class having the same birthday as 0.50 what are the odds of two people having the same birthday
Answer:
99.9%
Step-by-step explanation:
ILL GIVE THE BRAINLIEST pls help me with this question just tell me which one is the right answer you can show your work if you want to you don't have to EVERYTHING IS IN THE PICTURE PLS HELP DUE TODAY
Answer:
ans is 504m²
Step-by-step explanation:
given = side of square=18m
height of triangle=12m
formula= surface area of square + surface area of 4 triangles
surface area of square = 4 × length
= 4×18
=72m²
surface area of triangle = 1/2×base ×height
= 1/2×18×12 ( the base lies on the side of the squre so the base is also 18m)
= 108m²
therefore, surface area of 4 triangles = 4×108=432m²
therefore the surface area of the given figure= surface area of aquare + surface area of the 4 triangles
surface area of square= 72 +432
=504m²
x-1 = 9
one step equation
Answer:
x=10
Step-by-step explanation:
x-1 = 9
add 1 on both side
x-1+1=9+1
x=10
Answer:
The answer would be 10
Step-by-step explanation:
1) Add 1 to both sides.
[tex]x = 9 + 1[/tex]
2) Simplify 9 + 1 to 10.
[tex]x = 10[/tex]
Hence, the answer would be 10.
x = 10
Write the recurring decimal 0.25 as a fraction in its simplest form
Answer:
1/4 because 25% is a quarter.
1 1/4 x 1 1/3 plsss help
Answer:
exact form: 5/3
decimal form: 1.6 (6 is repeating)
mixed number form: 1 2/3
Step-by-step explanation:
Answer:
1 2/3
Step-by-step explanation:
1 1/4 x 1 1/3 = 5/4 x 4/3 = (5x4)/(4x3) = 20/12 = 5/3 = 1 2/3
A diamond retailer buys a ring from his supplier
for $875. He marks up the price 110% to sell in
his store. What is the selling price of the
diamond with a 6% sales tax?
Answer:
nerd is 18
Step-by-step explanation:
xsas
Answer: $1,947.75
Step-by-step explanation: First, the mark up is 110% of the total, which is $875. 110% of 875 is $962.50, which you add to the total ($875) since it is mark up. $962.50 + $875 = $1837.50. Finally, 6% of $1837.50 is $110.25 so you add this to your new price ($1837.50) since the 6% is the sales tax. $1837.50 + $110.25 = $1947.75
Determine the amplitude or period as requested . Amplitude of y = - 1/3 * sin x
Answer: amplitude and period are two different things. The amplitude is -1/3, and the period is 360 degrees.
Step-by-step explanation: to find the amplitude, you just look at what number is in front of sin. If there isn't one, an amplitude of 1 is implied (in this case. Keep in mind that different functions have different standards).
To find the period, you take term b (which is what comes after sin). In this case, b is 1 because there's no specific number there. Again, it's implied. Because this is sin and not tan, for example, you take 360/b=period. 360/1=360 degrees.
no links or you will not get brainlest. plz help
Answer:
3,384
Step-by-step explanation:
Answer:
3,384
Step-by-step explanation:
I need 1 Brainliest before I can become expert
If there are 36 boys and 48 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
Answer:
ans
Step-by-step explanation:
possible ratios are 3:4,9:12 and 18:24
Mark me as a brain list please
Answer:
Step-by-step explanation:
12:9
8:6
4:3
16:12
24:18
48:36
Can someone tell
Me how to do this
help me with this man
Answer:
Point J - Quadrant I
Point F - Quadrant II
Point P - Quadrant III
Point T - Y-axis
Step-by-step explanation:
Answer:
F: Quadrant II
J: Quadrant I
P: Quadrant III
T: y-axis
Step-by-step explanation:
Brainliest Please!!
Can any body help me and no links
Answer:
C
Step-by-step explanation:
7.67 is greater than 7.66666...
Angle A and B are congruent angles.•The measure of angle
A = 8x + 9•The measure of angle
B = 41 + 4xSolve for x.
A.8
B.2.6
C.12.5
D.4
Answer:
x = 8
Step-by-step explanation:
8x + 9 = 41 + 4x
4x = 32
x = 8
Determine the lateral and surface area of each triangular prism
Answer:
Step-by-step explanation:
lateral surface area=(sum of sides)×height
Total surface area =2×base area +lateral area
a ribbon is 4m long. how many pieces each of 30cm long can be cut from the ribbon
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Answer:
13
Step-by-step explanation:
4 m is 400 cm, so the number that can be cut is ...
(400 cm)/(30 cm/piece) = 13 1/2 pieces
13 pieces can be cut that are 30 cm long.
Answer:
13 whole pieces
Step-by-step explanation:
4m=400cm
400cm÷30cm=13.333333
you can't get 0.33333333(goes on forever) of a ribbon so its 13
hope this helps:)
Which values should you plot to show a linear relationship?
Month Population
Log(population)
1
1400
3.146
2
2600
3.415
3
4700
3.672
4
9000
3.954
5
17000
4.230
6
32000
4.505
O A. "Population on the x-axis and "Log(population)" on the y-axis.
O B. "Month" on the x-axis and "Population" on the y-axis.
w
O C. "Month" on the x-axis and "Log(population)" on the y-axis.
O D. "Log(population)" on the x-axis and "Month" on the y-axis.
Answer:“ C ”
“month” on the x axis and “log” on the y axis
HELP THIS IS DUE
Solve the linear equation and figure out whether it’s one solution, infinite or no solution include steps
3/4x -7 = 3 (1/6x +1)
Answer:
Includes Steps
Step-by-step explanation:
3/4x-7 =3(1/6x+1)
3/4x-7=3/6x +3
1/4x=10
x=40
someone answer this correctly please!!
Answer:
8 < [tex]\sqrt{71}[/tex] < 9
Step-by-step explanation:
You need to find the perfect squares above and below 71
8*8= 64
9*9 =81
8 < [tex]\sqrt{71}[/tex] < 9
a rectangular window is 36 inches long and 24 in wide. tammy would like to buy a screen for the window. because of the screen is based on the number of square feet the screen is use the fraction to find the area of the window in square feet.
Answer:
144 Sq
Step-by-step explanation:
The area of the rectangle formula is Length x Width. Given 4 ft and 3 ft, we can find the area. The screen would be 12 Sq. Feet since the question is asking for inches we must now convert this.
Please HELP FAST!!!!
Answer: b
Step-by-step explanation:
can anyone help me please
Is this a Percent Increase or Decrease Problem?
Kemyah bought a necklace for $260 that was marked
up by 30%.
Answer:
increase
Step-by-step explanation:
....................
Answer:
Percent Increase
Step-by-step explanation:
Percent Increase because if the necklace was bought for $260, and was marked up by 30%, it means it was originally a lower price, that was multiplied by 130%.
Explanation by algebra:
x + 0.30x = 260
1.3x = 260
x = 260/1.3
x = 200
The necklace was originally $200, and it was marked up by 30$, making it $260.
Cecil and three friend ran 15-mile relay race. Each friend ran an equal distance. What distance did each friend run?
Answer: Each friend ran 3.75 miles.
Step-by-step explanation:
Cecil and three friends is equal to 4 people. There are fifteen miles in the full relay. 15 divided by 4 is equal to 3.75.
15/4=3.75
So, the answer is each friend ran 3.75 miles.
PLEASE HELPPPP
Simplify: 2/3 -(6 + 3x) + 3 (x - 1)
Answer:
-25/3, or - 8 1/3
Step-by-step explanation:
many steps
2/3 + - (6+3x)/1 +3 (x-1)
- (6+3x)/1 *3/3* 2/3+ -(6+3x)/1 * 3/3 + 3 (x-1)
- (6+3x/1* 3/3* 2/3+ -(6+3x)*3/3 +3(x-1)*3/3
2-(6+3x)*3+3(x-1)*3/3
2+ (-1*6 - (3x)0 * 3+3 (x-1)*3/3
-1*6*2+(-6-(3x))*3+3(x-1)*3/3
3* -1 *2 + (-6-3x) *3+3 (x-1) *3 / 3
3*-1 * 2+(-6-(3x)) *3+3(x-1)*3/3
2-6*3x*3+3(x-1)*3/3
-6*3*2-18-3x*3+3(x-1)*3/3
3*-3*2-18-9x+3(x-1)*3/3