Answer:
200mph
Step-by-step explanation:
Speed is expressed using the expression
Speed = Distance/Time
For Mattie
Distance = 200miles
Speed = x
Time taken by mattie = Distance/speed
Time taken by mattie = 200/x ... 1
For the propeller plane:
Distance = 800miles
Speed = x+150 (The speed of the plane was 150 mph faster than the speed of the car)
time taken by the plane = 800/x+150
Since Mattie took the same amount of time that it took a turbo propeller plane to travel, then we will equate both expressions as shown:
200/x = 800/150+x
Cross multiply
800x = 200(150+x)
800x = 30,000 + 200x
800x-200x = 30,000
600x = 30,000
x = 30,000/600
x = 50
Get the speed of the plane
Since the speed of the plane is 150+x
Speed of the plane = 150+50
Speed of the plane = 200mph
What is the x-coordinate of the point shown in the graph?
y
8
4
-2
2 2
4
B
-8-6-4-2
-2
4
Answer:
-5, -7 or its -7, -5
Step-by-step explanation:
Answer:
-7 -5
Step-by-step explanation:
Round 1.9578 to 1 decimal
Answer:
2
Step-by-step explanation:
the first decimal is 9
9>5 so by rounding 1.9578 to 1 decimal we get 2
(-7-3i)(11-8i)
Simplified into the a+bi form
Answer: what
Step-by-step explanation:
If A = 4x2 + 9x - 5 and B = 6x2 – 3x - 9, then A - B equals
Answer:
1 I think I'm not 100% sure though
Please help me asap this is due in 10 min Ill also mark brainliest
As we know that formula of area of circle is πr²
So let's apply formula
π×8.6×8.6
=232.2
=200 is the nearest hundredth.
You have to do rest of all through this method.
The scatter graph shows the scores of 16 students on the biology and physics tests
Step-by-step explanation:
85 l don't see questions properly so l knew this much only l don't know exact answer so l write this answer
For a science experiment, students need to find 25% of 60 grams. How many grams is that?
(50pts)Solve for x:
a
7.125
b
6
c
8
d
4.125
Answer:
b. 6
Step-by-step explanation:
[tex](16x + 9) \degree = 105 \degree \\(corresponding \: \angle s) \\ \\16x + 9 = 105 \\ \\ 16x = 105 - 9 \\ \\ 16x = 96 \\ \\ x = \frac{96}{16} \\ \\ x = 6[/tex]
PLEASE HELP!! ITS ALMOST DUE!! ILL MARK BRAINLIEST!!!
Answer:
25 units should be right
Step-by-step explanation:
prove me wrong
Please determine x.
Jacelyn charges $9 per hour for umpiring softball games. If u represents Jacelyn's total fee after umpiring for h hours,
which equations can be used to model the situation?
how many hours? you didnt tell
Is Sue´s answer correct? if not, why?
9x + 4
8x - 4
4x + 17
If the perimeter is 374 units, find the value of x and the area of the triangle.
The value of x is
The area is
square units.
Answer:
x = 17
Area = 10,362units²
Step-by-step explanation
Given the sides of the triangle
S1 = 9x+4
s2 = 8x-4
S3 = 4x+17
Perimeter of the triangle is the sum of all the sides
P = S1+S2+S3
374 = 9x+4+8x-4+4x+17
374 = 21x+17
21x = 374-17
21x = 357
x = 357/21
x = 17
Hence the value of x is 17
Area of the triangle is 1/2bh
A = 1/2bh
b is the base
h is the height
Let the base be 9x + 4 and height be 8x-4
b = 9x+4
b = 9(17)+4
b = 153+4
b = 157units
h = 8x-4
h =8(17)-4
h = 136-4
h = 132
Area = 1/2 * 157 * 132
Area = 157*66
Area = 10,362units²
a Zoo ticket cost $13 for adults in about $8 for students if a company of 125 people wanted to take his employees to the zoo how much would they have to pay
Answer:
Assuming there all adults, it would be $1625
Step-by-step explanation:
A piece of furniture has a retail price of $780 and it’s on sale at a 20% discount what will the sale price of the piece of furniture before taxes
Answer:
624$
Step-by-step explanation:
For which line is the slope least?
HELP! ASAP!! Will Mark brainliest!
Answer:
The Answer is D.
Step-by-step explanation:
The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.The answer is D and credit goes to munequitarachel.
Need Heeeeeelp please ...
What is this equation in slope intercept form
There were 27 boxes of tea in the tea house. Each box weighed 18 kg. After selling 12 boxes, the shopkeeper packed the remaining tea into bags of 9 kg each. How many bags of tea can be packed?
Answer:
30 boxes of tea
Step-by-step explanation:
27 (overall tea boxes) - 12 (boxes sold) = 15
15 (leftover boxes) x 18 (kg of each box) = 270
270 (overall kg of the boxes) divided by 9 (kg of the bags) = 30, so all the tea boxes can be placed into the bags
Using Properties to Simplify Expressions
Instruction Active
Matching Equivalent Expressions
Match each expression on the left with an equivalent expression on the right
PLS HELP
Answer:
1) 2x-3 = x -3 + x
2) 2x - 6 = -6 + 2x
3) [tex]\frac{3}{5}-\frac{13}{5}=-6.9+4.9[/tex]
4) 3x+0 = 3x
5) [tex]\frac{5}{3}-x+\frac{1}{3}=-\frac{3}{2}x+2+\frac{1}{2}x[/tex]
Step-by-step explanation:
We need to match each expression on the left with an equivalent expression on the right
The expressions are equivalent if the have the same results.
1) 2x - 3
Looking at the options the best match is:
x -3 + x
When solve we get:
2x-3
So, 2x-3 = x -3 + x
2) 2x - 6
Looking at the options the best match is:
-6 + 2x
Because according to commutative property: a+b = b+a
So, 2x - 6 = -6 + 2x
3) [tex]\frac{3}{5}-\frac{13}{5}[/tex]
First simplifying the given expression:
[tex]\frac{3}{5}-\frac{13}{5}\\=\frac{3-13}{5}\\=\frac{-10}{5}\\=-2[/tex]
Looking at the options, -6.9+4.9 = -2
So, [tex]\frac{3}{5}-\frac{13}{5}=-6.9+4.9[/tex]
4) 3x + 0
Looking at the options the best match is:
3x
Because, adding 0 in 3x will result in 3x
So, 3x+0 = 3x
5) [tex]\frac{5}{3}-x+\frac{1}{3}[/tex]
First simplifying:
[tex]\frac{5}{3}-x+\frac{1}{3}\\=\frac{5-3x+1}{3}\\=\frac{6-3x}{3}\\= \frac{3(2-x)}{3}\\=2-x[/tex]
Now, solving the option: [tex]-\frac{3}{2}x+2+\frac{1}{2}x[/tex]
[tex]=\frac{-3x+4+1x}{2}\\=\frac{-2x+4}{2}\\=\frac{2(-x+2)}{2}\\=-x+2\\or\\=2-x[/tex]
So, [tex]\frac{5}{3}-x+\frac{1}{3}=-\frac{3}{2}x+2+\frac{1}{2}x[/tex]
1/6(x-5)=1/2(x+6) help
Answer: x= -23/2
Step-by-step explanation:
multiply both sides of the equation by 6
x-5=3(x+6)
distribute 3
x-5=3x+18
move variables to lest-hand side and change sign
x-3x=18+5
like terms
-2x=23
the divide both sides by -2
x= -23/2
The average fuel efficiency of U.S. light vehicles (cars, SUVs, minivans, vans, and light trucks) for 2005 was 21 mpg. If the standard deviation of the population was 2.9 and the gas ratings were normally distributed, what is the probability that the mean mpg for a random sample of 25 light vehicles is Under 20
Answer:
0.042341
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ/n, where
x is the raw score = 20 mpg
μ is the population mean = 21 mpg
σ is the population standard deviation = 2.9
n = random number of samples
Hence:
For x < 20
= z = 20 - 21/2.9/√25
= z = -1/2.9/5
= z = -1.72414
P-value from Z-Table:
P(x<20) = 0.042341
The probability that the mean mpg for a random sample of 25 light vehicles is Under 20 mpg is 0.042341
The probability that the mean mpg for a random sample of 25 light vehicles is 0.042341
Calculation:Here we used z score formula
z = (x-μ)/σ/n, wherex is the raw score = 20 mpgμ is the population mean = 21 mpgσ is the population standard deviation = 2.9n = random number of samplesSo,
For x < 20
= z = 20 - 21/2.9/√25
= z = -1/2.9/5
= z = -1.72414
Now
P-value from Z-Table:
P(x<20) = 0.042341
Learn more about the probability here: https://brainly.com/question/795909?referrer=searchResults
What is 8 2/5 minus 5/8
Answer: 7.775 as a decimal, as a fraction, 311/40.
Step-by-step explanation:
Answer:
im 95%ly sure itz just 8
Step-by-step explanation:
A farm is to be built in the shape of Quadrilateral ABCD, as shown below. All four sides are equal.
A rhombus ABCD is shown with diagonal AC equal to 18. 3 feet and diagonal BD equal to 13.8 feet
What is the area of the farm? (1 point)
a
73.2 square feet
b
111.2 square feet
c
126.27 square feet
d
168.36 square feet
Answer:
c 126.27 square feet
Step-by-step explanation:
sum of two triangles
18.3 * (13.8/2) * 2 = 126.27
What is the answer to this question?
Answer:
D
Step-by-step explanation:
so they ran the trial ten times so now you have to aks how many times did they get heads
which would be 2/10 times
you want the accuracy of which they got so divide 2/10
we know the probability of getting heads is 50%
so when you calulate it, it will give you 0.2 use the percent button and get 0.1
i need help with this!! i have to get my hw done quick!!
Step-by-step explanation:
221+w=274..................
.......
Answer:
53 + 221 = 274
Step-by-step explanation:
I'm pretty sure its saying
w + 221 = 274
and in this case, w = 53
because if you subtract 274 by 221 you get 53.
Best of luck to you!!!
25624 divided by 2/3
Answer:
38436
Step-by-step explanation:
(25624/1) * (3/2) = 76872/2
76872/2 = 38436
In a right triangle ABC, C is the right angle. What does cosB equal?
1. SinB
2. SinA
3. CosA
4. Not enough info
Given that,
ABC is a right angle triangle, C is the right angle.
To find,
cosB = ?
Solution,
The sum of angle of a triangle is equal to 180 degrees. So,
∠A + ∠B + ∠C = 180°
Put ∠C = 90°
∠A + ∠B + 90° = 180°
∠A + ∠B = 90°
Taking cos with each term.
cosA+cosB = cos (90)
cosA+cosB = 0
cosB=-sinA
Hence, cosB = sinA.
What is the angle measurement of CBD?
A
U
68°
D
B
20°
229
Ο Ο Ο Ο
29ο
1
25°
24