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▹ Answer
20 km/h
▹ Step-by-Step Explanation
Amount of km - 80 km
Hours - 4 hours
km/h = 80/4
= 20 km/h
Hope this helps!
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Answer:
20 km/hr
Step-by-step explanation:
since she went 4 hours if we divide 80 km by 4 we should get our answer. 80/4 is 20 so the bird when 20 km/hr
2. You need to buy grass seed for a new lawn. The lawn will cover a rectangular plot that is 60 feet by 90 feet. Each ounce of grass seed will cover 120 square feet. a. How many ounces of grass seed will you need to buy?
Answer:
45 oz
Step-by-step explanation:
first you need to find the are of the yard. To do that you multiply the length by the width: 60x90=5400 feet
next you divide by 120: 5400/120=45
therefore, you need to buy 45 ounces of grass seed.
Without using a calculator, choose the statement that best describes the value of the square root of 46
i need help :(
Answer:
The value of √46 is between 6.5 and 7.
Step-by-step explanation:
We can use perfect squares to solve this problem.
1² = 1
2² = 4
3² = 9
4² = 16
5² = 25
6² = 36
7² = 49
A square root reverses the squaring operation. Therefore, if we take the square root of 49, we will get 7.
So, because 46 fits in the interval 36 < 46 < 49, we can solve this problem.
√36 = 6
√46 = ?
√49 = 7
Therefore, using this information, we can see that clearly the value of 46 is closer to 49, meaning that the square root of 46 is between 6.5 and 7.
Can you please help me with this please and i will give you a branlist please help me thank you
Answer:
zx
Step-by-step explanation:
Which answer describes the type of numbers that are dense? whole numbers and integers whole numbers but not integers rational numbers and irrational numbers rational numbers but not irrational numbers
Using number sets, it is found that the set of dense numbers is composed by: rational and irrational numbers
---------------
Numbers can be classified as:
Whole numbers: All positive numbers and 0, so: {0,1,2,...} Integer numbers: Positive or negative, not decimal so: {...,-2,-1,0,1,2,....} Rational numbers: Integer plus decimals that can be represented by fractions, that is, they either have a pattern, or have a finite number of decimal digits, for example, 0, 2, 0,45(finite number of decimal digits), 0.3333(3 repeating is the pattern), 0.32344594459(4459 repeating is the pattern). Irrational numbers: Decimal numbers that are not represented by patterns, that is, for example, 0.1033430290339, which can be approximated to the rational 0.1. Real numbers: Rational plus irrational.---------------
A subset is dense of the rational numbers if all numbers can be approximated to rational numbers, and thus, rational and irrational numbers are dense.A similar problem is given at https://brainly.com/question/10814303
Passports. In 2006, approximately 71 million valid
passports were in circulation in the United States.
This number increased to approximately 102 million
in 2011. What is the percent increase?
Answer:
0.437%
Step-by-step explanation:
given:
initial number = 71 M
final number = 102M
increase = final number - initial number
= 102 - 71
= 31 M
Percent increase
= increase / initial number x 100%
= (31 / 71) x 100%
= 0.437%
No. of valid passports in 2006 = 71M
No. of valid passports in 2011 = 102M
We have to find percentage increase in the number of passports[tex].[/tex]
[tex]\leadsto\sf\:\% Increase = \dfrac{N_2-N_1}{N_1}\times 100[/tex]
[tex]\leadsto\sf\:\% Increase = \dfrac{102M-71M}{71}\times 100[/tex]
[tex]\leadsto\sf\:\% Increase=\dfrac{31}{71}\times 100[/tex]
[tex]\leadsto\sf\:\% Increase=\dfrac{3100}{71}[/tex]
[tex]\leadsto\:\boxed{\bf{\blue{\% Increase=43.66\%}}}[/tex]
Hope it helps !
Learn More :
https://brainly.com/question/17392904
Which expression is equivalent to StartRoot negative 80 EndRoot? Negative 4 StartRoot 5 EndRoot Negative 4 StartRoot 5 EndRoot i 4 StartRoot 5 EndRoot i 4 StartRoot 5 EndRoot
Answer:
(4√5)i
Step-by-step explanation:
Complex number is a number in the form a + bi, where both a and b are real numbers. A complex number has two parts, the first part a is the real part of the complex number and the second part b is the imaginary part of the complex number. Also, i = √(-1), hence i² = -1.
Complex numbers can also be graphed on the complex plane.
√(-80) = √(-1) × √(80)
But since √(-1) = i
√(-80) = i × √80 = i × √16 × √5 = i × 4 × √5 = (4√5)i
√(-80) = (4√5)i
Answer:
C) 4 Square Root 5 i
Step-by-step explanation:
100% on edge. When your wrist like this, you don't check the forecast
Every day it's gon' rain, yeah
Shawn has a piece of paper that is 26 cm long and 19 cm wide. If he divides the piece of paper into 2 equal sections, what is the area of each section? A. 43 sq cm B. 45 sq cm C. 247 sq cm
Answer:
C
Step-by-step explanation:
26*19=494
494/2=247
For the EOQ model, which of the following relationships is incorrect?
a. As the order quantity increases, the number of orders placed annually decreases.
b. As the order quantity increases, annual holding cost increases.
c. As the order quantity increases, annual ordering cost increases.
d. As the order quantity increases, average inventory increases.
Answer: As the order quantity increases, annual ordering cost increases
Step-by-step explanation:
The Economic Order Quantity (EOQ) is simply referred to as the amount of units that should be added by a company to its inventory with each order in order to minimize total inventory costs such as order costs, holding costs, and shortage costs.
The incorrect option is that "as the order quantity increases, annual ordering cost increases". It should be noted that ordering costs are simply the expenses that are incurred in order for an order to be created and processed to a supplier. It should be noted that as the ordering quantity increases, it doesn't mean that the annual ordering costs also increase.
A rectangle length is 5 more than its width. If the premiditer of the rectangle is 66 inches, what is the length of the rectangle
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{19 \: inches}}}}}[/tex]
Step-by-step explanation:
Let the width be 'w'.
Length of a rectangle ( l ) = 5 + w
Perimeter of a rectangle = 66 inches
First, finding the width of a rectangle
[tex] \boxed{ \sf{perimeter \: of \: rectangle = 2(l + w)}}[/tex]
[tex] \dashrightarrow{ \sf{66 = 2(5 + w + w)}}[/tex]
[tex] \dashrightarrow{ \sf{66 = 2(5 + 2w)}}[/tex]
[tex] \dashrightarrow{ \sf{66 = 10 + 4w}}[/tex]
[tex] \dashrightarrow{ \sf{10 + 4w = 66}}[/tex]
[tex] \dashrightarrow{ \sf{4w = 66 - 10}}[/tex]
[tex] \dashrightarrow{ \sf{4w = 56}}[/tex]
[tex] \dashrightarrow{ \sf{ \frac{4w}{4} = \frac{56}{4} }}[/tex]
[tex] \dashrightarrow{ \sf{w = 14 \: inches}}[/tex]
Width of a rectangle ( w ) = 14 inches
Now, Substituting / Replacing the value of w in order to find the length of rectangle
[tex] \sf{length = 5 + w}[/tex]
[tex] \dashrightarrow{ \sf{length = 5 + 14}}[/tex]
[tex] \dashrightarrow{ \sf{19 \: inches}}[/tex]
Length of a rectangle = 19 inches
Hope I helped!!
Best regards! :D
replace the values of m and n to show the soulutions of thie equation,
x2+6x-5=0
a. Evaluate the polynomial
y = x3− 5x2 + 6x + 0.55 at x = 1.37.
Use 3-digit arithmetic with chopping. Evaluate the percent relative round-off error.
b. Express y as y = ((x − 5)x + 6)x + 0.55 (this is the same equation). Use again 3-digit arithmetic with chopping. Evaluate the percent relative round-off error and compare with part (a). Make the conclusion about which form of the polynomial is superior.
The form of the polynomial given in part (a) is superior, as it has a lower percent relative round-off error compared to the form given in part (b).
To evaluate the polynomial [tex]y = x^3 - 5x^2 + 6x + 0.55[/tex]at x = 1.37 using 3-digit arithmetic with chopping, we substitute x = 1.37 into the expression:
[tex]y = (1.37)^3 - 5(1.37)^2 + 6(1.37) + 0.55[/tex]
Calculating each term;
[tex](1.37)^3[/tex]= 2.559
5[tex](1.37)^2[/tex]= 9.415
6(1.37) = 8.22
Substituting these values into the expression for y,
y = 2.559 - 9.415 + 8.22 + 0.55
y = 1.914
Now, let's move on to part (b).
We will express y as y = ((x - 5)x + 6)x + 0.55,
Now using 3-digit arithmetic with chopping.
Then, we substitute x = 1.37 into the expression:
y = ((1.37 - 5) 1.37 + 6) 1.37 + 0.55
Calculating each term separately:
(1.37 - 5) = -3.63
-3.63 x 1.37 = -4.98
-4.98 + 6 = 1.02
1.02 x 1.37 = 1.3974
Finally, adding 0.55:
y = 1.3974 + 0.55
y = 1.9474
Now, let's compare the percent relative round-off errors in both cases.
In part (a), the exact value of y was 1.914, while the approximate value using 3-digit arithmetic with chopping was also 1.914. Therefore, the percent relative round-off error is:
(1.914 - 1.914) / 1.914 x 100 = 0%
In part (b), the exact value of y was 1.914, while the approximate value using 3-digit arithmetic with chopping was 1.9474.
Therefore, the percent relative round-off error is:
(1.9474 - 1.914) / 1.914 x 100 ≈ 1.741%
Therefore, in this comparison, we can conclude that the form of the polynomial given in part (a) is superior, as it has a lower percent relative round-off error compared to the form given in part (b).
Learn more about percent here;
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256 over the square root of 256 select all that apply A: Rational B: Integer C: Whole D: Real
Answer:
A:rational hope this helps mark brainlest
Step-by-step explanation:
suppose that a computer chip company has just shipped 10,000 computer chips to another computer company. Unfortunately, 20 of the chips are defective. Compute the probability that two randomly selected chips or defective using conditional probability
Answer:
20÷10=2. 10,000÷10=1,000
Therefore, the probability of two randomly selected chips being defective is 2 in 1,000 or 2/1,000
What is the square root of -16?
е в
-87
0 ООО
8
[tex]4i[/tex]
[tex]i=\sqrt{-1}[/tex]
[tex]\sqrt{-16}=\sqrt{-1}*4[/tex]
[tex]\sqrt{-16}=i*4[/tex]
[tex]4i[/tex]
Hope this helps.
頑張って!
A cone has a volume of 180mm^3. If the height and radius of the cone are equal in length, find the radius r in mm. Round your answer to two decimal places
Answer:
r = 5.56 mm
Step-by-step explanation:
vol of cone = 1/3 π r² h
where
vol = 180 mm³
h = r
find r
plugin values into the formula:
180 = 1/3 * π r³
r³ = (180 * 3) / π
r = ∛171.9
r = 5.56 mm
Answer:
radius = 5.56 mm
Step-by-step explanation:
Solve each system of equations.
1.
2x – 3y = 3
- 4x + 6y = -6
Answer:
First one: x= -1/2
Second one: x= 1/4
Solve for x
x - 7 = 8
Answer: x = 15
Step-by-step explanation: In this problem, since 7 is being subtracted
from x, add 7 to both sides of the equation to get x by itself.
On the left side, -7 + 7 will cancel out and
on the right side, 8 + 7 simplifies to 15.
So x = 15.
The value of x in the given equation x - 7 = 8 is 15.
Given that an equation x - 7 = 8, we need to solve for x.
To solve for x in the equation x - 7 = 8, you want to isolate x on one side of the equation.
Follow these steps:
Step 1: Add 7 to both sides of the equation to isolate x on the left side:
x - 7 + 7 = 8 + 7
Simplifying the left side, the -7 and +7 cancel out, leaving:
x = 15
Step 2: Check your solution by substituting the value of x back into the original equation:
x - 7 = 8
Substitute x with 15:
15 - 7 = 8
Simplify the left side:
8 = 8
Since the left side equals the right side, we have verified that x = 15 is indeed the correct solution for the equation.
Hence, the answer is x = 15.
Learn more about equation click;
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Answer:
0
Step-by-step explanation:
Eight friends bought a large order of wings. Each of them ate 9 wings. How many total wings were in the order?
Answer:
72 wings
Step-by-step explanation:
[tex]1 \:friend = 9 \:wings\\8 \: friends = x\:wings\\\\[/tex]
Cross Multiply
[tex]x = 9\times 8\\\\x = 72 \:wings[/tex]
The order came with 72 wings. 72 divided by 9=8, 8 times 9=72
A number minus 6 is few then 8
Answer: true or yes
A number minus 6 is few then 8
Step-by-step explanation:
if you do 6-5=1 or 6-3=3 so true or yes ????
hoped this helped?????????
What is the simplified value of the expression below? 8*(-3)
Answer:
-24
Step-by-step explanation:
The parentheses means you have to multiply the 2 numbers
Answer:
-24
Step-by-step explanation:
Name the three angles of the triangle
Answer: Equilateral, Isosceles and Scalene
hope this helped (let me know if it did)
-13.3°C=_________K °C is Celsius and K is Kelvin
Answer:
259.85 K
Formula:
-13.3°C + 273.15 = 259.85K
Step by step solution:
To convert, just add 273.15 to the Celcius value to get the Kelvin value.
Hope this helps!
What is the slope of a line perpendicular to the line whose equations is x-y=6
Answer:
m = -1
Step-by-step explanation:
First write the line in slope intercept form y = mx+b where m is the slope and b is the y intercept
x-y = 6
subtract x from each side
-y = -x+6
Multiply each side by -1
y = x-6
The slope is 1
Perpendicular lines have slopes that multiply to -1
m * 1 = -1
m = -1
The slope of the perpendicular line is -1
solve a=9y+3xy for y
Answer:
y=a/(9+3x)
Step-by-step explanation:
Reverse: 9y+3xy=a
y(9+3x)=a
y=a/(9+3x)
35. Explain the difference between the reciprocal of x^2
and the inverse of x^2. (number 35 in the pic)
Answer:
As you can see, the difference between the reciprocal of [tex]x^2[/tex] and the inverse of [tex]x^2[/tex] is that [tex]\frac{1}{x^2} =x^{-2}[/tex] and [tex]\sqrt{x} =x^{\frac{1}{2}[/tex].
Step-by-step explanation:
First lets find both the reciprocal of [tex]x^2[/tex] and the inverse of
Recall that the reciprocal of a value is where you take a fraction and swap the places of the terms. In the case of [tex]x^2[/tex], 1 is the denominator, so
[tex]\frac{x^2}{1} =\frac{1}{x^2}[/tex]
To find the inverse of a function, you first need swap the locations of x and y in the equation
[tex]y=x^2\\\\x=y^2[/tex]
Now, you need to solve for y
[tex]y^2=x\\\\y=\sqrt{x}[/tex]
Now, lets rewrite each of these to better compare them
[tex]\frac{1}{x^2} =x^{-2}\\\\\sqrt{x} =x^{\frac{1}{2}[/tex]
As you can see, the difference between the reciprocal of [tex]x^2[/tex] and the inverse of
The left and right page numbers of an open book are two consecutive integers whose sum is 533. Find the page numbers
Answer:
The page numbers are 266 and 267
Step-by-step explanation:
I divided 533 by 2
Then get 266.5
Then guessed and checked which pages around that value added up to 533
and you get pages 266 and 267
Find the midpoint of the line segment with the given endpoints. (-10, 5), (-9, -9)
Answer:
[tex]=\left(-\frac{19}{2},\:-2\right)[/tex]
Step-by-step explanation:
[tex]\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)\\\\\left(x_1,\:y_1\right)=\left(-10,\:5\right),\:\\\left(x_2,\:y_2\right)=\left(-9,\:-9\right)\\\\=\left(\frac{-9-10}{2},\:\frac{-9+5}{2}\right)\\\\Simplify \\=\left(-\frac{19}{2},\:-2\right)[/tex]
Add [ -6 + -2 +2] + [-3 + 2 +1]
Answer:
-6Step-by-step explanation:
[tex][ -6 + -2 +2] + [-3 + 2 +1]\\[/tex]
Follow the PEDMAS order of operation
[tex]\\\mathrm{Calculate\:within\:parentheses}\:\left[-6-2+2\right]\::\quad -6\\=-6+\left[-3+2+1\right]\\\\\mathrm{Calculate\:within\:parentheses}\:\left[-3+2+1\right]\::\quad 0\\=-6+0\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:-6+0\:\\:\quad -6[/tex]
Answer:
-6
Step-by-step explanation:
A square and a regular hexagon can intersect in....
A) Triangle
B) Rectangle
C) Pentagon
D) A Line Segment
Answer:
D) A Line Segment
Step-by-step explanation:
pentagon. is the answer for this one