Answer:
https://www.calculatorsoup.com/calculators/algebra/quadratic-formula-calculator.php try this website, it shows a step by step solution, and is a calculator for your problem <3
Step-by-step explanation:
The normal cruising speed of a certain airplane is about 260 m/sec. What is the speed in miles per hour? Round to the appropriate number of significant digits.
Answer: 582 miles per hour
Step-by-step explanation:
581.603 miles per hour
Round= 582
The speed of an airplane in miles per hour is 581.60 miles/hour.
What is unit conversion?To convert any unit into another is called a unit conversion.
In order to convert units, we need to care about their dimensions their dimension should not be changed.
For example conversion of a kilometer to a meter is to multiply by 1000 but meter and kilometer both unit is for distance only.
Given the speed of an airplane = 260 m/sec
Since,
1 mile = 1.60934 kilometer
1 km = 1000 meter
So,
1 mile = 1609.34 meter
1 m = (1/1609.34) mile
And,
1 hour = 360 seconds
1 s = (1/360)hour
So,
260 m/sec = 260 (3600/1609.34) miles/hour
⇒ 581.60 miles/hour.
Hence "The speed of an airplane in miles per hour is 581.60 miles/hour".
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Which of the following statements best describes the solution to the problem below? -3/6 x (-3/8)
Answer:
Step-by-step explanation:
The answer is c the solution will be positive because there are two negative signs
5715 divided by 84 into fraction
Answer:
lowest form is 1905/28 or 68 1/28 as a mixed number
Step-by-step explanation:
5715/84
÷3 from both sides
5715÷3=1905
5715÷3=28
Please help me!!
20points!!
9514 1404 393
Answer:
A) 1
Step-by-step explanation:
Let the distance from A to BC be represented by y, and the distance DE be represented by x. We can write some relations using the definition of the tangent of an angle, and the double-angle formula for tangent. The double-angles are complementary
Left angles
Call the smaller angle α. Then the larger angle is 2α.
tan(α) = x/2
tan(2α) = 2tan(α)/(1 -tan(α)²) = 2(x/2)/(1 -(x/2)²) = 4x/(4 -x²)
Right angles
tan(β) = x/3
tan(2β) = 2tan(β)/(1 -tan(β)²) = 2(x/3)/(1 -(x/3)²) = 6x/(9 -x²)
__
Angles 2α and 2β are complementary, so the product of their tangents is 1.
(4x/(4 -x²))(6x/(9 -x²)) = 1
24x² = (4 -x²)(9 -x²) . . . . multiply by the product of denominators
x⁴ -37x² +36 = 0 . . . . . put in standard form
(x² -36)(x² -1) = 0 . . . . . factor
Solutions to this equation are x = ±1 and x = ±6. Only positive values less than 1.25 can possibly satisfy the geometry. Hence x = DE = 1.
The length of DE is 1.
HELPPPPP HELPPPPPPPPPPPPPPPPPPPPPPP
Answer:
Month: no
(13,33)…. Yes
Time,distance: yes
(1,2)… no
Age, shoe size: no
(x,y) yes
Step-by-step explanation:
Step-by-step explanation:
A relation is any set of ordered pairs, which can be thought of as (input, output).
A function is a relation in which no two ordered pairs have the same first component (x-values or input) and different second components (y-values or output).
First row:
Months (input) and Days (output) = not a function. The month of February has two corresponding outputs: Days of 28 and 29.
{(13, 33), (17, 25), (22, 22), (25, 17), (33, 17)} = this relation is a function. Each input value (x-coordinate) corresponds to exactly one output value (y-coordinate).
Plot of Distance (mi) vs. Time (h): the graph represents a function. Each input value (x-coordinate) corresponds to exactly one output value (y-coordinate).
Second row:
{(1, 2), (5, 2), (5, 4), (7, 6), (11, 6), (11, 8)}: this relation is not a function. The input value of 5 has two corresponding output values: 2 and 4. The same goes with the input value of 11, which has two output values of 6 and 8.
Table of Age (x) and Shoe Size (y): does not represent a function. The x = 15 has two corresponding y-values: 10 and 10.5.
Diagram of x and y (bottom-left corner): this relation represents a function. Each input value corresponds to exactly one output value.
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help please i do not understand
Step-by-step explanation:
x. y=3x². y=3^x
0. 0. 1
1. 3 3
2. 12. 9.
hope this helps you. Just put the value of x in the equations of y.
Can you help me anyone
Answer:
uh ew what is your pfp also its C
7. Bob has saved 32 gummi bears. His mom
gives him 3 gummis every 2 days.
What is the rate of change?
Jenna bought a package of 12 drumsticks. The package weighed 1.572 Kg. What is the average weight of each drumstick?
Answer:
0.131kg is the average.
Step-by-step explanation:
Divide 1.572 (total weight) by 12 (amount of sticks)
What is another way to write 4^6?
6+6+6+6
4+4+4+4+4+4
4×4×4×4×4×4
6×6×6×6
Hello there!
Another way to write 4^6 is 4×4×4×4×4×4.
Because 4^6 means 4 times 4 times 4 times 4 times 4 times 4.
I hope this helps you!
~Just a joyful teen
[tex]*SilentNature*[/tex]
[tex](GraceRosalia)[/tex]
Answer:
4,000,000
is this powers of ten? plz tell me
Please answer question A) please ASAP ☺️
Answer:
Given function:
P(n) = 0.4n + 5.7Find its inverse:
x = 0.4[tex]P^{-1}[/tex](x) + 5.70.4[tex]P^{-1}[/tex](x) = x - 5.7[tex]P^{-1}[/tex](x) = (x - 5.7)/0.4 [tex]P^{-1}[/tex](x) = x/0.4 - 5.7/0.4[tex]P^{-1}[/tex](x) = 2.5x - 14.25a) Correct choice is B
[tex]P^{-1}[/tex](x) is the amount of vitamins n for a price of x dollars.b) See above the equation of inverse function.
c) Find the value of inverse function when x = 8.3
[tex]P^{-1}[/tex](8.3) = 2.5*8.3 - 14.25 = 6.5 gramsPLEASEE HELP
Determine the unknown angle measure for each triangle
A. m
B. M
Answer: total sum of 180°.
Step-by-step explanation:
A natural gas company charges a fixed customer fee of $ 12.60 every
month even if no natural gas is used. For every unit of natural gas used,
the customer is charged an additional $0.64.
a. Using x as the number of units used in a month and y as the total
monthly cost, write an equation
y = 12.60 + 0.64x
Step-by-step explanation:
y = $12.60 + $0.64(x)
y = 12.60 + 0.64x
If f(x) = 2x and g(x) = 5x + 2, what is (f + g)(x) when x = 3?
Answer:
f÷g=2x+5x+2=7x+2
x=3
7×3+2=21+2=23
The value of (f + g)(x) when x = 3, if f(x) = 2x and g(x) = 5x + 2, is 23.
What is function?The function is a relationship between a set of potential outputs and a set of possible inputs, where each input has a single relationship with each output. This means that if an object x is present in the set of inputs (also known as the domain), then a function f will map that object to exactly one object f(x) in the set of potential outputs (called the co-domain).
Given:
f(x) = 2x and g(x) = 5x + 2
Calculate (f + g)(x) as shown below,
f(x) + g(x) = 2x + 5x +2
f(x) + g(x) = 7x + 2
Put x = 3
f(3) + g(3) = 7 × 3 + 2
f(3) + g(3) = 23
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Find all real solutions of the equation (x- 4)^2 = 9.
Answer:
x = 1 and 7
Step-by-step explanation:
I GOTCHU!
x-4 = 3, no matter what
x can be 1 or 7!
10 points right now for right answer
Answer:
x = 200
Step-by-step explanation:
Answer:
x=200 because it really do be like day sometimes
Step-by-step explanation:
edge trust me
What is i^-2
please help urgently
1
-1
i
-i
angle W and angle Y are supplementary. If
the measure of angle W = 5x + 20 and the measure of angle Y = 4x - 11, find the measure of angle W
and Y
Answer: angle of w is 115 degrees and angle of y is 65 degrees.
Step-by-step explanation: in the picture.
Answer:
Angle W = 115° Angle Y = 65°angle W and angle y are supplementary
that is angle W + angle Y = 180°
angle w = 5x + 20
angle y = 4x - 11
putting this value in above equation
we get
5x + 20 + 4x - 11 = 180
5x + 4x + 20 - 11 = 180.
9x + 9 = 180
9x = 180 - 9
9x = 171
x = 19
angle W= 5x + 20
= 5(19)+ 20
= 95 + 20
= 115°
angle y = 4x - 11
= 4(19) - 11
= 76 - 11
= 65
the anser is the second picture on moby max
(5,-2)
Can someone help
Answer: (5, -2)
Step-by-step explanation: no question boss
Answer:
I can probably help but I don`t really understand what you`re asking. Put your question in the comments and I`ll do my best to answer!
Slove 4x - c = k for x
Answer:
[tex]x=\frac{k+c}{4}[/tex]
Step-by-step explanation:
[tex]5 {x}^{2} - 2x + 3x = 9 {x}^{2} + 9x[/tex]
please fast please fast
Answer:
[tex]5 {x}^{2} - 2x + 3x = 9 {x}^{2} + 9x \\ 5 {x}^{2} + x = 9 {x}^{2} + 9x \\ 5 {x}^{2} - 9 {x}^{2} = 9x - x \\ - 4 {x}^{2} = 8x \\ - 4x = 8 \\ x = \frac{ - 8}{4} = - 2 \\ x = - 2 \\ thank \: you[/tex]
Answer:
x = -2
simplify:
-4x^2 - 8x = 0
Two entrepreneurs imported crafts for resale. The ratio of their investment was
3:5. What was each person's share of the $12,000 sales income?
Answer:
$4500 and $7500Step-by-step explanation:
The share has the same ratio as investment:
3x + 5x = 120008x = 12000x = 12000/8x = 1500The shares are:
3*1500 = 45005*1500 = 7500Find the volume of a box that has a length of 7 cm, a width of 9 cm, and a height of
11.2 cm.
I NEED HELP!!
Select correct answer
what is 0.65 as a fraction or mixed number in simplest form?
Answer:
13/20
Step-by-step explanation:
0.65 = 65/100
both are multiples of 5, so simplify:
65/100 = 13/20
-Chetan K
Hi everyone, stay safe, I need help on this, it’s about Triangles.
Answer:
Right scalene triangle
Acute equilateral triangle
Step-by-step explanation:
For the first triangle, we will use the Converse of the Pythagorean Theorem:
If c² < a² + b², then it means that it is an acute triangle.
If c² = a² + b², then it means that it is a right triangle.
If c² > a² + b², then it means that it is an obtuse triangle.
For the first triangle, let c = 25 yd, a = 7 yd, and b = 24 yd
c² = a² + b²
25² = 7² + 24²
625 = 49 + 576
625 = 625 (True statement).
Therefore, the first triangle is a right triangle. At the same time, each angle have different measures, making it a scalene triangle. Therefore, the first triangle is an example of a right scalene triangle.
For the second triangle, since all sides are equal, it doesn't matter which side we label as a, b, or c.
Let's see which type of triangle it is according to its sides:
c² = a² + b²
32² = 32² + 32²
1024 < 2048
Therefore, it is an acute triangle. At the same, the second triangle has equal sides, making it an equilateral triangle. Therefore, the second triangle is an example of an acute equilateral triangle.
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Reggie records the lengths of different fabrics he has.
Reggie is left with [tex]\dfrac{27}{8}[/tex] yarns of fabric.
The total length of fabrics = [tex]\dfrac{1}{8}+\dfrac{1}{4}+3\dfrac{1}{2}+2\dfrac{5}{8}+4\dfrac{3}{4}[/tex]
= [tex]\dfrac{1}{8}+\dfrac{1}{4}+\dfrac{7}{2}+\dfrac{21}{8}+\dfrac{19}{4}[/tex]
The LCM of 4 and 8 is 8.
So, the expressions will be simplified by adding all the terms with the same denominator.
= [tex]\dfrac{49}{8}[/tex]
The fabric used by Reggie = [tex]2\dfrac{3}{4}[/tex]
= [tex]\dfrac{11}{4}[/tex]
The fabric left can be calculated by subtracting the total fabric he used from the total fabric he had.
Fabric left =[tex]\dfrac{49}{8} - \dfrac{11}{4}[/tex]
The LCM of 8 and 4 is 8
Fabric left = [tex]\dfrac{49}{8} - \dfrac{22}{8}[/tex]
= [tex]\dfrac{27}{8}[/tex]
So, he is left with [tex]\dfrac{27}{8}[/tex] yarns of fabric.
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A contractor purchases 6 dozen pairs of padded work gloves for $80.64. He incorrectly calculates the unit price as $13.44 per pair for the expense report. What is the correct unit price? What is the error?
Answer:
it is $1.12 for each pair of gloves
Step-by-step explanation:
Carrie is making a colorful beaded necklace. She has 3 times as many green beads
as red beads, and twice as many blue beads beads. If she has 150 beads
all together, how many of the beads are green?
Answer:
45 green beads
.
Step-by-step explanation:
Let the number of red beads be 'x'
Given that, Carrie has 3 times as many green beads as red beads
Number of green beads = 3 times number of red beads
Number of green beads = 3x
She 2 as many blue beads as green beads
Number of blue beads = 2 times the number of green beads
Number of blue beads = 2(3x) = 6x
She has 150 total
Therefore,
Number of red beads + Number of green beads + Number of blue beads = 150
x + 3x + 6x = 150
10x = 150
x = 15
Thus, number of green beads = 3x = 3(15) = 45
Thus there are 45 green beads
I hope this helps
The question requires finding total green beads she has
There are 45 green beads
let
number of red beads = x
number of green beads = 3x
number of blue beads = 2(3x)
Total beads = 150
Total beads = red beads + green beads + blue beads
150 = x + 3x + 2(3x)
150 = 4x + 6x
150 = 10x
divide both sides by 10
x = 150/10
x = 15
Therefore,
number of red beads = x
= 15 beads
number of green beads = 3x
= 3 × 15
= 45 beads
number of blue beads = 2(3x)
= 2(3 × 15)
= 2(45)
= 90
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