Answer:
490 mi/h
Step-by-step explanation:
[tex]{\large{\boxed{\mathfrak{Question}}[/tex]
A plane's average speed when flying from one city to another is 550 mi/h and is 430 mi/h on the return flight. To the nearest mile per hour, what is the plane's average speed for the entire trip?
[tex]{\large{\boxed{\mathfrak{Formula}}}[/tex]
The formula to find the average speed is distance divided by time
[tex]{\large{\boxed{\mathfrak{Equation\:to\:find\:average\:speed}}}[/tex]
Let a be the average speed
[tex]\frac{1}{550}+\frac{1}{430} =\frac{2}{a}[/tex]
Since we don't want our denominator's we will get rid of them by multiplying the [tex]LCM[/tex] between the two numbers.
Definition of LCM - The smallest quantity that is divisible by two or more given quantities, also known as Least Common Multiple
Multiply both sides by [tex]23650a[/tex] since that is our LCM.
Now our equation is
[tex]43a+55a=47300[/tex]
[tex]{\underline{simplify}}[/tex]
[tex]98a=47300[/tex]
Since we want to isolate the average speed on one side or also known as [tex]a[/tex] we will divide both sides by 98
[tex]a=482.653[/tex] miles per hour
[tex]{\large{\boxed{\mathfrak{Answer}}}[/tex]
Our average speed is [tex]482.653[/tex] miles per hour or [tex]483[/tex] miles per hour
Workout the area of a semicircle with a radius of 3cm. Give your answer in terms of pi
The area of a circle is PI x r^2
Area = PI x 3^2
Area = 9PI
A semicircle is 1/2 a full circle
Area of the semicircle can be written as 9/2PI or 4.5PI cm^2
Step-by-step explanation:
area=22/7*25
are =(22/7*25
area=(3.14*25
area 39.25
helppppppppppppppppppppp
Answer:
Step-by-step explanation:
1) 5 - [-5] = 5 + 5 = 10
2)8 - 13 = 8 + (-13) = -5
3) 12 +(-3) = 9
4) x + (-7) = 5
x - 7 = 5
x = 5 + 7
x = 12
We need to add 12 to (-7) to get 5
5) 7 - x = -5
7 = -5 +x
7 + 5 = x
12 = x
We need to take away 12 to 7 to get (-5)
6) 7 - (-10) = 7 + 10 = 17
17° C
Which of the following represents a combination reaction?
Select one:
a.
AB --> A + B
b.
AB + CD --> AD + BC
c.
A - B --> C
d.
A + B --> AB
Answer:
option a is the correct.
I think
Solve the equations.
[tex]\sqrt{x^{2} } =14[/tex]
[tex]\sqrt{x^{2} } =17[/tex]
[tex]\sqrt{y^{2} } =5[/tex]
Answer:
[tex]x=\pm14\\x=\pm17\\y=\pm5[/tex]
Step-by-step explanation:
Generally, equations in the form [tex]\sqrt{x^2}=c[/tex] where [tex]c[/tex] is some constant, would have [tex]x=\pm c[/tex] as its solution.
This is because the square of a number is always positive regardless of the sign of [tex]x[/tex].
can someone please help
Answer:
3/5
decimal from: 1.5
Step-by-step explanation:
super easy questions, lots of points
A new energy drink advertises 140 calories for 8 ounces. How many calories are in 20 ounces of the drink?
There are
calories in the 20 ounce drink.
Answer:
350
Step-by-step explanation:
in every 140 calories there is 8 ounces
what about in 20 ounce of drink
140 calories ___8 ounce
? 20 ounce
140×20 =2800÷8=350
Rewrite the equation below so that it does not have fractions.
3/4x-5=3/8
Do not use decimals in your answer.
Answer:
x=
6
43
Step-by-step explanation:
pasos
4
3
x−5=
8
3
Agrega 5 a ambos lados.
4
3
x=
8
3
+5
Convertir 5 a la fracción
8
40
.
4
3
x=
8
3
+
8
40
Como
8
3
y
8
40
tienen el mismo denominador, sume sus numeradores para sumarlos.
4
3
x=
8
3+40
Suma 3 y 40 para obtener 43.
4
3
x=
8
43
Multiplica los dos lados por
3
4
, el recíproco de
4
3
.
x=
8
43
×(
3
4
)
Multiplica
8
43
por
3
4
(para hacerlo, multiplica el numerador por el numerador y el denominador por el denominador).
x=
8×3
43×4
Realiza las multiplicaciones en la fracción
8×3
43×4
.
x=
24
172
Reduzca la fracción
24
172
a su mínima expresión extrayendo y anulando 4.
x=
6
43
100 POINTS
find surface area!!
Step-by-step explanation:
The figure consists of 6 rectangle and 2 triangle faces.
Surface area (excluding bottom side) is:
S = 2(2.4*1.6 + 1.3*1.6 + 1.5*1.6 + (1/2)*2.4*0.9) = 18.8 yd²Total surface area (including bottom side):
A = 18.8 + 2.4*1.3 = 21.92 yd²Answer:
[tex]s \: = \: 2(2.4 \times 1.6 + 1.3 \times 16 + 1.5 \\ \times 16 + ( \frac{1}{2} ) \times 2.4 \times 0.9) \\ \\ = 18.8y {d}^{2} \\ \\ total \: surface \: area \: ( \: including \\ \\ bottom \: side \: ) \\ \\ a \: = 18.8 + 2.4 \times 13 \\ \\ = 21.92y {d}^{2} [/tex]
what is the answer to 5^-16+24 with solution
Answer:
24
Step-by-step explanation:
i used calculator. it is so easy
Helpppppp!!!!!!!!!All you need to do is explain the steps!!!!
Answer: Heyy Bestie <3
The Answer Steps are down below
Stay Sliving
The thing is that's all I got. There is no other way to simplify it. Are you sure that is the right equation?
PLZZ HELP ME WORTH 35 POINTS
Answer:
3.2
Step-by-step explanation:
8/100×40=3.2. This is how to find the sales tax.
Solve for X: x-5=m
Options
x=m
x=5
x=m+5
x=m-5
Answer:
x=m+5
Step-by-step explanation:
if x minus 5 is m then reverse it and m plus 5 would be x
Answer:
x=m: x-5=m which means m-5=m which means 5=0 which means No Solutions
x=5: x-5=m which means 5-5=m which means m=0
x=m+5: m+5-5 which means m-0=m which means No solutions
x=m-5: m-5-5=m which means m-10=m which means -10=0 which means No solutions
how did you get m in the equation
Liam invests $3,670 in a savings account at his local bank which gives 1.9% simple annual interest. He also invests $2,040 in an online savings account which gives 5.5% simple annual interest. After five years, which one will have earned more interest, and how much more interest will it have earned, to the nearest dollar?
Step-by-step explanation:
Given:
Investment P₁ = $3670Investment P₂ = $2040Rate of interest r₁ = 1.9% SIRate of interest r₂ = 5.5% SITime t = 5 yearsFind amount of interest in both investments:
I₁ = P₁r₁t = $3670*(1.9/100)*5 = $348.65I₂ = P₂r₂t = $2040*(5.5/100)*5 = $561.00As we see the online savings account earns more interest and the difference is:
$561.00 - $348.65 = $212.35 ≈ $212Given the diagram below find the value of x
Answer:
x = 15
Step-by-step explanation:
a straight line has the angle of 180 degrees
so when added together both angles should equal 180
4x - 17 + 137 = 180
then combine like terms
4x + 120 = 180
and then subtract
4x = 60
and then divide
x = 15
and that is your answer
A valuable collection of coins contained old nickels, dimes,quaters, and pennies. The face value of the pennies was $8. Therewere seven more than three times as many quaters as dimes andsixteen less than twice as many nickels as quaters. If the facevalue of the entire collection was $38.40, how many of each kind ofcoin was there?
Answer:A number line shows 114, −224, and −134. Which statement is NOT true?
Step-by-step number line shows 114, −224, and −134. Which statement is NOT true?
A number line shows 114, −224, and −134. Which statement is NOT true?
Help me with questions 3 and 4 please!
Answer:
Question 3: x0 = y1
your basically adding 9 for y!
Question 4: x0 = y1
your adding 1 for y!
Hope this helped!
Answer:
3.)
y=3X + 1
slope is 3
y intercept is 1
4.)
y=(1/2)X+1
slope is 1/2
y intercept is 1
can someone help me pls
Answer:
D
Step-by-step explanation:
So you need to find out which is not rational.
A is a rational number because when you put the expression in a caculator you get -14.
B is a rational number.
C is a rational number because it decimal does not continue on.
D is not a rational number because it answer is a non termanting decimal.
...
Please help me with this I have no idea how to do it, it is past due but I’ll still get credit and my teacher won’t help since it was due Thursday.
Jamar earned $2,500 from his summer job at the grocery store. This is $350 more than twice what his friend Todd earned. How much did Todd earn from his summer job?
Answer:
Todd earns $1075
Step-by-step explanation:
First, we do 2500 - 350
2150
Second, we divide by 2
2150/2 = 1075
The end Pls give me brainliest and like
Which of the following closet to a yard in length?
(a).0.1m
(b).0.01m
(c).1m
(d).100m
Could you answer my question ⁉️
Answer:
option. b
Step-by-step explanation:
.0.01m........
True of False? The blue radius is perpendicular to the green chord
Answer:
Step-by-step explanation:
true i think
The statement that the blue radius is perpendicular to the green cord is false.
What are radius and chords?The radius of a circle is any line segment connecting the centre of the circle to any point on the circle. The chord of a circle is a line segment joining any two points on the circle.
From the complete question,
The blue radius does not bisect the green chord
This means that the blue radius and the green chord do not meet at 90 degrees
Since both lines do not meet at 90 degrees, then they are not perpendicular
Hence, the statement that the blue radius is perpendicular to the green cord is false
Read more about radius and chords at:
brainly.com/question/1869643
#SPJ7
(-2, -1) and (-4, -7)
Find the slope of the line that passes through the two given points
Answer:
m=3
Step-by-step explanation:
Someone please help me with this question
absolute value of -5 in I -5 I
Answer:
5
Step-by-step explanation:
if x<0 => |x| = -x
So |-5|= -(-5) = 5
omg please help idek
I will mark you brainly Answer the following questions. Questions What is an amount between $2 and $10? (A) __________ What is an amount between $10 and $20? (B) __________ What is an amount greater than $50? (C) __________ What is your name? (D) _________________ What is the name of an item that you will buy only once? (E) _________________ What is the name of an item that you will buy more than once? (F) _________________ Create a word problem that leads to an inequality by filling in the blanks with your corresponding answers. Word Problem (D) _________________ is going shopping for (E) _________________ and (F) _________________. The cost of (E) _________________ is (B) __________ and the cost of each (F) _________________ is (A) __________. If (D) _________________ can spend at most (C) __________, how many (F) _________________ can be purchased? Write an inequality of the form Ax + B ≤ C to represent the word problem using your answers for A, B, and C. Solve the inequality and show your work. Graph the solution to your inequality on a number line or describe, in words, how to graph the inequality on a number line. Explain what the solution means in the context of the word problem.
Answer:
Step-by-step explanation:
You can see the answer and solving inequality in the below document
Plz help me. Thank you.
Answer:
It Is9
Step-by-step explanation:
Cho hai tập hợp A = {0,1,4,7,8,9}, B = {1,2,3,4,6,7,8}.Tập hợp B\A bằng:
A. {2,3,6} B. {0,8}
C. {1,4,7,9} D. {1,3,7,9}
Đáp án
A. {2,3,6}
Lời giải:
B\A là tập hợp các phần tử B có mà A không có. => B\A = {2,3,6}
Answer:
.
Step-by-step explanation:
