Answer:
the ansere is -20
Step-by-step explana
The speed is given by the arithmetic mean. Then the jet Alyssa's average speed on the round trip is 540.
What is the average speed?The total distance covered by the particle or the body in a total time is called average speed. It is a scalar quantity. It is the ratio of distance to time.
We know that the average speed formula
[tex]\rm v_{a} = \dfrac{v_1+ v_2}{2}[/tex]
The speed of the jet Alyssa flew on from Boston to London was 480 mph.
On her return flight, the speed of the jet was 600 mph with a tailwind.
Then the average speed of the jet will be
[tex]\rm v_{a} = \dfrac{v_1+ v_2}{2}\\\\v_{a} = \dfrac{480 + 600}{2}\\\\v_{a} = 540\ mph[/tex]
More about the average speed link is given below.
https://brainly.com/question/7359669
please explain:
what is a parabola?
minimum values of parabola, equations of the axis of symmetry for parabola, y-intercept of parabola, vertex of parabola
formulas
i know this is a lot so just answer whatever you can, thanks so much :))
please help meee........
Answer:
Bro i dont know if i am right but here we go
The answer most likely is 80
Step-by-step explanation:
By useing a bit of geometry instead of useing two angles to find your last angle.
So first notice how there are two of the same sides (14)but one differnt side(18) okay nice
With that info it is clear that it is a isosoles triangle (triangle with two equal sides and angles) so from that information two of the angles are gonna be the same. Luckely you were given an angle.
So that means there are two 50 angels and an X angle and to solve for X angle you need to add 50 + 50 = 100 then subtract to 180 then boom 80
I hope you understand and im sorry if this is wrong.
How do I convert vertex form to square form in algebra?
Example: y = x^2 -6x + 2.
I need to know this to find out the minimum or maximum of the vertex of parabola
Answer:
(3,−7)
Step-by-step explanation:
A recipe requires 5.5 teaspoons of sugar to make a cheesecake. Which equation shows the number of teaspoons of sugar, y, needed to make x cheesecakes? (1 point) a x = 5.5b y = 5.5 + x = 5.5x = 5.5 + y Sorry I suck at math
Name: 1. Label the axes. 2. Graph: A(-3, 0) B(-2, 4) C(1, -1) Draw AABC in blue. 3. Rotate AABC 90° clockwise to create AA'B'C' in red. List the coordinates below: Formula: (x, y) → (y, -x) A(-3, 0)→A' ( ) B(-2, 4)→B' ( ) C(1, -1)→ C'( ) 4. Translate AA'B'C' three units down to create AA"B"C" in green. What are the coordinates of AA"B"C"? A" ( ) B" ( C" ( ) 27.
Answer:
its B because
Step-by-step explanation:
Simplifying
41n(7x) = 8
Remove parenthesis around (7x)
41n * 7x = 8
Reorder the terms for easier multiplication:
41 * 7n * x = 8
Multiply 41 * 7
287n * x = 8
Multiply n * x
287nx = 8
Solving
287nx = 8
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Divide each side by '287x'.
n = 0.02787456446x-1
Simplifying
n = 0.02787456446x-1
Evaluate the expression: |8| - 2 x |-3| + 4
1. 22
2. 10
3. 42
4. 6
Answer:
The answer is 6. Hope this helps!
Answer:
6
Step-by-step explanation:
|-3|=3
8-2×3+4
8-6+4
2+4
6
4
The table shows the relationship between x, the number of quarters inserted into a dryer at a
laundromat and y, the number of minutes the dryer runs.
Can someone help me with math, please? No links 100 points
help me please i will give the brainiest
Answer:
4(x+10)
Step-by-step explanation:
(x+15)+(x+5)+(x+15)+(x+5)
x+15+x+5+x+15+x+5
x+15+x+5+x+15+x+5
x+40+x+x+x
x+40+x+x+x
4x+40
4x+40
4(x+10)
Bennett is getting in shape for football season. He runs 400 yards
3 times each day for 5 days. Which shows the correct way to find the
number of miles Bennett will run in 5 days? Circle the letter of the
correct answer. (1 mile = 1,760 yards)
A 400 X 3 X 5 X 1,760
B 400 ÷ (3 X 5) ÷ 1,760
C 400 X (3 + 5) ÷ 1,760
D 400 X 3 X 5 ÷ 1,760
Jory chose A as the correct answer. How did he get that answer?
Answer:
D.
Step-by-step explanation:
D. the correct answer because if you divide the 3,500 to 1760 it equal to 1 miles
Can Someone Please Help Me? I’m really Confused with this
Triangle PQR is similar to triangle XYZ. Which statement is true?
A.
The slope of QR is equal to the slope of XZ.
B.
The slope of PR is equal to the slope of XZ.
C.
The slope of QR is equal to the slope of XY.
D.
The slope of PR is equal to the slope of YZ.
B.
The slope of PR is equal to the slope of XZ.
Step-by-step explanation:
Point PR and XZ line up, on the blue line.
Hope this helps!
helpppppppppppppppppppppppp
Answer:
1) 13
Step-by-step explanation:
I wouldn't post if I didn't know the answer.
PS, can I get brainliest please, thank you, I hope this helps.
Identify an obtuse angle and give its measure.
this question has had me stumped since Thursday could you help me out?
Answer:
Swewed left
Step-by-step explanation:
I know this because most of the data is on the left and not many on the right. And in the graph the mean is less than the median so by that you can know it's left skewed because left skewed is also known as negative sweked and I use that to help me since less and negative have a link.
Darnell bought 6 packs of baseball card. There were 6 cards in each pack Darnell put all his card in card book. He put 9 cards on each page.
How many pages of the card book did Darnell use?
Answer:
Darnell used 4 pages.
Step-by-step explanation:
We know Darnell has 36 cards, with this given we can do the simple division of 36 / 9 to get the answer of 4.
Pls give brainliest!
Answer:
4 pages
Step-by-step explanation:
1 pack : 6 cards
6 packs : x cards.
x = 6 x 6
= 36
Darnell bought 36 baseball cards.
1 page : 9 cards
x pages : 36 cards
x = 36/9
= 4
Darnell used 4 pages of his card book.
brainlies, help pls
Subtract the following fractions. Simplify and reduce to the lowest terms.
6/9 - 4/9
A.10/9
B.2/9
C.1/3
D.10/18
Answer:
B
Step-by-step explanation:
6/9 - 4/9 = 2/9
Cant be simplified any farther
Answer:
The answer is B
Step-by-step explanation:
Step 1 :
Since our denominators match, we can subtract the numerators.
6 − 4 = 2
So the answer is:
2/9
Step 2 :
Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?
To find out, we try dividing it by 2...
Nope! So now we try the next greatest prime number, 3...
No good. 3 is larger than 2. So we're done reducing.
There you have it! The final answer is:
2/9!
I need help with my math homework I suck at this. Please help.
Please help me!
Identify all the sets to which the number 3.1214122144 . . . belongs.
a) rational number
b) irrational number
c) integer, rational number
d) whole number, integer, rational number
Thanks!
Answer:
B
Step-by-step explanation:
Since the decimal goes on forever, it is Irrational. Any numbers with an infinite number of digits go under irrational numbers.
B
Step-by-step explanation:
A Ferris wheel rotates three times when it travels 235.5 feet. Find the diameter of the Ferris wheel. Use 3.14 for pi
Answer:
try 3.14 x 3.14 / 235.5 and that should be your awnser.
Step-by-step explanation:
the equation for diameter is d=2r which is pi times pi divided my the number. if i remeber correctly. lmk if im wrong
Answer: The diameter is 10cm
Step-by-step explanation:
First, we divide 78.5/3.14 which = 25
Now, we find the square root of 25 to find the radius, which is 5.
The radius is 5cm, which means that the diameter is 10cm.
The diameter of the Ferris wheel is 10cm.
If we recalculate the area again with the diameter given, we can see that:
AREA = 3.14r2
AREA = 3.14 x 5 squared ( radius is half diameter )
AREA = 3.14 x 25 = 78.5
HELP ME PLEASE ILL GIVE BRAINLIST POINT!!!
Answer:
The answer is 242 mm squared
Step-by-step explanation:
22x11=242 mm squared
Hope you have a wonderful rest of your day or night! ^w^
Carl is boarding a plane. He has 2 checked bags of equal weight and a backpack that weighs 4 kg. The total weight of Carl's baggage is 35 kg.
Write an equation to determine the weight, www, of each of Carl's checked bags.
Find the weight of each of his checked bags.
Answer:
15.5kg
Step-by-step explanation:
total is 35
35-4=31
31÷2=15.5kg
BRAINLIEST PLS HELP
Add the following fractions. Simplify and reduce to the lowest terms.
7/9 + 5/9
A.12/9
B.2/9
C.1 1/3
D.1 1/9
7 points: What is the value of k?
pls need help.
Answer:
78
Step-by-step explanation:
angle 78 is parallel to k which makes then equal the same value so K is equal to 78
k=78
Step-by-step explanation:
the opposite angel is also 78
Compare the backpack weights for the students in the three classes.
Which shapes have all the properties shown? Select all that apply.
A. Isosceles triangle
B. Parallelogram
C. Rectangle
D. Right triangle
E. Square
F. Trapezoid
The table below shows some properties of shapes.
Answer:
parallelogram
trapezoid
Step-by-step explanation:
a parallelogram has two parallel sides
Answer the two questions below
3. Suppose that you are going to select a random sample of students from your school, measure the heights of the students in your sample, and then find the mean height for your sample. There are many different sets of students who could end up forming your sample. Will the sample mean be the same for all possible samples? If so, explain why. If not, what is the phrase used for the fact the sample means will vary according to the sample selected?
4. Return to the context of the previous item. The sample mean will vary according to what sample you happen to select. If you want to reduce this variation, would you choose to select a sample of size 5 or a sample of size 25?
Answer:
3: No
4: 25
Step-by-step explanation:
3: It won't because not everyone is the same height and there will be variation in the mean height.
4: A larger sample size will give a more accurate representation of the population, where as a sample size of 5 is much more likely to have a higher percentage of outliers, and each outlier matters much more in finding the mean. In a sample size of 25, each outlier matters much less.
HOME WORK HELP DUE BEFORE 3:00
Answer:
sandcastle (7,6)
chest (-1,5)
bucket (-6,1)
fish (-4,-6)
starfish (4,-5)
seahorse (-7,-2)
crab (5,0)
ice cream (1,-6)
life ring (-7,7)
‐----------------------------------------
square (3,6)
hexagon (-3,6)
frog (-6,-6)
fish (2,-5)
Pentagon (5,-1)
right triangle (6,2)
equilateral triangle (-5,-3)
crab (-2,2)
snail (6,-3)
A home improvement store sold chairs for $60 each. A customer signed up for a free membership card and received a 5% discount off the price. Sales tax of 5% was applied after the discount. What was the final price of each chair?
Answer: 59.85
Step-by-step explanation:
This is the anwser because
60*.05=3
60-3=57
57*.05=2.85
57+2.85=59.85
A rectangular prism has a length of 7 cm, a width of 4 cm, and a height of 212cm. The prism is filled with cubes that have edge lengths of 12 cm. How many cubes are needed to fill the rectangular prism? Enter your answer in the box.
Answer:
first solve the volume of the rectangular prism
V = l x w x h
where l is the length
w is the width
h is the height
V = 7 x 4 x 2.5
v = 70 cu cm
then solve the volume of the box
v = e^3
v = 0.5^3
v = 0.125
number of cubes = 70 / 0.125
number of cubes = 560 cubes
Step-by-step explanation:
At 5 P.M., the total snowfall is 5 centimeters. At 11 P.M., the total snowfall is 12 centimeters. What is the mean hourly snowfall? Write your answer in simplest form as a fraction or mixed number.
The mean snowfall is (BLANK) centimeters per hour.
Answer:
The mean snowfall is 1 centimeter per hour
Step-by-step explanation:
The snowfall is measured over 7 hours.
Between then there is 7 cm of snow that fell
7 / 7 = 1
1cm per hour