Answer:
The aircraft and the submarine are 255 m apart
Step-by-step explanation:
Here, we want to calculate the distance between the submarine and the aircraft
From the question;
The aircraft is 200 m above the surface and the submarine is 55 m below ( this is same as an altitude of -55)
So the distance between the two will be;
200-(-55) = 255 m
Answer:
255m
Step-by-step explanation:
Until the scale was changed in 1995, sat scores were based on a scale set many years ago. For math scores, the mean under the old scale in the early 1990s was 470 and the standard deviation was 110. In 2016, the mean was 510 and the standard deviation was 103. Gina took the sat in 1994 and scored 500. Her cousin colleen took the sat in 2016 and scored 530. Who did better on the exam, and how can you tell?.
Gina—her standardized score is higher than Colleen’s. The person who did better relative to their peers is Gina and this is because her standardized score is higher than Colleen
z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.
For Gina
Gina took the SAT in 1994 and scored 500 on the Math test.
For Math scores, the mean under the old scale in the 1990s was 470 and the standard deviation was 110.
x = 500
μ = 470
σ = 110
Hence, the z score is given as:
z = 500 - 470/110
z = 0.27273
Gina's z or standardized score is 0.27273
For Colleen
Her cousin Colleen took the SAT in 2016 and scored 530 on the Math test.
In 2016 the mean was 510 and the standard deviation was 103.
x = 530
μ = 510
σ = 103
Hence, the z score is given as:
z = 530 - 510/103
z = 0.19417
Colleen's z or standardized score is 0.19147
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Hey, Whats The answer please explain your answer marking brainliest:D.....................................
Answer:
A) 21
Step-by-step explanation:
30% of 70 is 21
could someone please help me with this?
Help please math people
Answer:
29
Step-by-step explanation:
[tex]f(x)=4x+9[/tex]
Substitute x = 5 in the equation.
[tex]f(5)=4(5)+9\\f(5)=20+9\\f(5)=29[/tex]
Therefore, the answer is 29. The third choice.
Jordan is starting to save $150 to buy a new cell phone. In December, he saved $5. In January, he plans twice as much as he did in December, for a total savings of $15 ($5 + $10). If Jordan continues to save twice as much he saved from the previous month, in which month will his total savings will be enough to buy the phone.
9514 1404 393
Answer:
April
Step-by-step explanation:
The sequence of amounts saved is a geometric sequence. The sum of those amounts is given by the formula ...
Sn = a1·(r^n -1)/(r -1)
where a1 is the amount saved in month 1, r is the common ratio, and n is the number of months. We want to find n such that ...
150 ≤ 5(2^n -1)/(2 -1)
30 ≤ 2^n -1
31 ≤ 2^n
We can solve this using logarithms, or we can make use of our knowledge of powers of 2: 2^5 = 32. That is, n = 5 will be the first month when Jordan's total savings exceeds $150.
The fifth month will be April. Jordan's total savings will be enough in April.
__
The attached shows a spreadsheet that computes Jordan's amount of savings each month, and his running total. Once the formulas are written, they can be copied down as far as required to see where the total savings is enough.
The distribution of random variable r has mean 10 and standard deviation 4. The distribution of random variable s has mean 7 and standard deviation 3. If r and s are independent, what are the mean and standard deviation of the distribution of r−s ?.
The random variable r has a mean μ = 10 and σ = 4. For the variable s, the μ = 7 and σ = 3. The mean of r-s will be obtained by arithmetic subtraction of the μ for r and a. The standard deviation isn't independent since it's obtained by square root of the variance of a distribution. The standard deviation will be obtained by obtained through the square root of the squared sum of σ.
μ (r-s) = μ(r) -μ(s)
μ (r-s) = 10 -7 = 3
σ (r) -σ(s) = √(σ (r))²+ (σ (s))²
σ (r) -σ(s) = √(4²+ 3²)
σ (r) -σ(s) = √(16+ 9)
σ (r) -σ(s) = √25 = 5
thus, the mean is 3 and the standard deviation is 5.
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can you guys help me plss? I’ve been stuck in this one
Answer:
Restaurant A maybe because its the one with the least amount of money charged and guests.
Step-by-step explanation:
6/17
2
The equation F = 9/5 C + 32 is used to convert Celsius temperature to Fahrenheit
temperatures. C is the temperature in degrees Celsius. What is the temperature in
degrees Fahrenheit when the temperature in 35 in Celsius?
76
59
67
95
Answer:
the answer 95 degrees
Step-by-step explanation:
9/5*35*+32
Write in slope intercept form . y+4=−12(x−2)
Answer:
20
Step-by-step explanation:
y+4=−12(x−2)
Step 1: Add -4 to both sides.
y+4+−4=−12x+24+−4
y=−12x+20
At a carnival game, the chance of winning a prize is 0.45. Kylee plays the game 3 times. Using the table, what is the probability that she wins at most 2 prizes?
0.09
0.33
0.58
0.91
The probability of winning one prize in 3 attempts is P = 0.41.
What is probability?Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true.
Given that, the chance of winning a prize is 0.45, Kyle plays the game 3 times. we need to find the probability that she wins at most 2 prizes
Out of 3 attempts, the probability of winning one prize is:
P(1) = (0.45)x(0.55)²p
where p is the number of permutations, you can win on the first attempt, second attempt, or third attempt, so there are 3 permutations.
Then the probability is:
P(1) = (0.45)x(0.55)²x3 = 0.41
Hence, the probability of winning one prize in 3 attempts is P = 0.41,
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Answer: D 0.91
Step-by-step explanation:
Add 0.17 + 0.41 + 0.33 = 0.91
To get 0.17:
0.41 + 0.33 + 0.09 = 0.83
1 - 0.83 = 0.17
:)
Help ASAP I’ll give brainliest
Answer:
B
Step-by-step explanation:
—Math–x/4 < 7
–x < 28
x > –28
follow my account^^
Answer:
B. x > -28
Step-by-step explanation:
-x/4 < 7 =
Multiply both sides by 4
-x < 28
x > -28
A school had 45 classrooms. there are 27 in each classroom how many students are in all 45 classrooms?
Answer:
1215
Step-by-step explanation:
Answer:
1,215
Step-by-step explanation:
just multiply 27 &45
Find the gradient of the line segment between the points (-3,3) and (2,5).
Give your answer in its simplest form.
Answer:
2/5
Step-by-step explanation:
5-3/2-(-3)=2/5
Manuel created a factor tree and wrote the prime factorization of 60 shown below.
A factor tree of 60. 60 branches to 4 and 15. 15 branches to 3 and 5. The equation is 60 = 3 times 4 times 5.
What is Manuel’s error?
He did not include 15 in the prime factorization.
He did not find the prime factors of 4.
He should have started the factor tree with 2 times 30.
He should not have found the factors of 15.
Answer:
The second one or B- "He did not find the prime factors of 4."
Step-by-step explanation:
I got it right on Edge2020
Answer:
B
Step-by-step explanation:
what is 11 = 12 - q ?
Answer:
1
Step-by-step explanation:
12 - 1 = 11
to solve for q all you had to do was 12-11=1 (switch 11 and one)
Hey there!
11 = 12 - q
-q + 12 = 11
SUBTRACT 12 to BOTH SIDES
-q + 12 - 12 = 11 - 12
SIMPLIFY IT!
-q = 11 - 12
-q = -1
-1q = -1
DIVIDE -1 to BOTH SIDES
-1q/-1 = -1/-1
SIMPLIFY IT!
q = -1/-1
q = 1
Therefore, your answer should be:
q = 1
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Solve for y: 20x + 4y = 28
Answer:
y = 7 - 5x
Step-by-step explanation:
20x + 4y = 28
4y = 28 - 20x
y = 28/4 - 20x/4
y = 7 - 5x
-TheUnknownScientist
how many lines of symmetry does the Eiffel Tower have?
Answer:
it has 2 lines of symmetry 1 going across it diagonally and 1 going straight through the middle.
Step-by-step explanation:
50 POINTS AND BRAINLIEST
Solve for x: 3x − 2 > 5x + 10. (5 points)
1) x > 6
2) x −6
Answer:
[tex]x<-6[/tex]
Step-by-step explanation:
[tex]3x-2>5x+10[/tex]
Add 2 to both sides
[tex]3x-2+2>5x+10+2[/tex]
Simplify
[tex]3x>5x+12[/tex]
Subtract [tex]5x[/tex] from both sides
[tex]3x-5x>5x+12-5x[/tex]
Simplify
[tex]-2x>12[/tex]
Multiply both sides by [tex]-1[/tex] (reverse the inequality)
[tex](-2x)(-1)<12(-1)[/tex]
Simplify
[tex]2x<-12[/tex]
Divide both sides by [tex]2[/tex]
[tex]\frac{2x}{2} <\frac{-12}{2}[/tex]
Divide the numbers: [tex]\frac{2}{2} =1[/tex]
[tex]=x[/tex]
Divide the numbers: [tex]\frac{-12}{2}[/tex]
Apply fraction rule: [tex]\frac{-a}{b} =-\frac{a}{b}[/tex]
[tex]=\frac{12}{2}[/tex]
Divide the numbers: [tex]\frac{12}{2} =6[/tex]
[tex]=-6[/tex]
[tex]x<-6[/tex]
Answer:
x < -6
Step-by-step explanation:
I just took the test. When you are dividing by a negative variable, flip the sign.
Help me with this it’s for geometry
Answer:
x = 4
Step-by-step explanation:
The transversal line is perpendicular to both the parallel lines. So ,
[tex]21x+6=90\\=>21x=90-6=84\\=>x = \frac{84}{21} = 4[/tex]
pls help. polynomials solving equations
Answer:
+9or -9 is the answer ☺️ you
Answer:
y will be equal to 0, 9, or 1
(y=0, 9, 1)
4(x - 6) + 2 = 6x -2
solve the equation
Answer:
x=−10
Step-by-step explanation:
Let's solve your equation step-by-step.
4(x−6)+2=6x−2
Step 1: Simplify both sides of the equation.
4(x−6)+2=6x−2
(4)(x)+(4)(−6)+2=6x+−2(Distribute)
4x+−24+2=6x+−2
(4x)+(−24+2)=6x−2(Combine Like Terms)
4x+−22=6x−2
4x−22=6x−2
Step 2: Subtract 6x from both sides.
4x−22−6x=6x−2−6x
−2x−22=−2
Step 3: Add 22 to both sides.
−2x−22+22=−2+22
−2x=20
Step 4: Divide both sides by -2.
−2x
−2
=
20
−2
x=−10
Answer:x=-10
Step-by-step explanation:4x-24+2=6x-2 -22+4x=6x-2 , 2x=-20 , x=-10
Find the missing side of this triangle, round to the nearest tenth if needed PLEASE HELP WILL MARK BRAINLIEST
Answer:
The value of x:
[tex]x\:\approx \:8[/tex] inStep-by-step explanation:
Given
[tex]b=4.8[/tex] in
[tex]c=9.3[/tex] in
a = x
we have to determine 'x'.
As the given triangle is a right-angled triangle.
Pythagorean Theorem:
For a right-angled triangle, with sides 'a' and 'b', the hypotenuse 'c' is defined as
[tex]c=\sqrt{a^2+b^2}[/tex]
so
[tex]a=\sqrt{c^2-b^2}[/tex]
as
[tex]b=4.8[/tex] in[tex]c=9.3[/tex] ina = xsubstituting the values
[tex]x=\sqrt{9.3^2-4.8^2}[/tex]
[tex]x\:\approx \:8[/tex] in
Thus, the value of x:
[tex]x\:\approx \:8[/tex] inwhat is the value of the fourth term in a geometric sequence for which a1 = 3- amd r = 1/2
The value of the fourth term in a geometric sequence is 3/8.
How to calculate the sequence?We are meant to find the value of the fourth term in a geometric sequence for which a1 = 3- and r = 1/2.
It should be noted that the formula will be:
ar^n-1
where n = 4
r = 1/2
a = 3
Therefore, ar^n-1 = ar^(4-1) = ar³
= ar³.
= 3(1/2)³
= 3 × 1/8
= 3/8
Thw 4th term is 3/8.
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The local newspaper has letters to the editor from 30 people. If this nunber represents 5% of all of the
newspaper's readers, how many readers does the newspaper have?
The newspaper has___readers.
Answer:
600 readers
Step-by-step explanation:
just do 100/5=20
and then 30x20=600 readers
What is the problem to 20x40+50?
Answer: 130
Step-by-step explanation:
20 X 40 = 80 + 50. = 130
Please help me, inequalities...............................
Answer:
x is greater than or equal to 1
Step-by-step explanation:
I’m not sure how to do this can anyone help!!!!!
9514 1404 393
Answer:
22/44
Step-by-step explanation:
The probability of black is the ratio of black cards to all cards. If the Ace and 2 are removed from each suit, there will be 11 of the 13 cards remaining. 2 suits are black, for a total of 2×11 = 22 black cards. Of course there are 4 suits altogether, for a total of 4×11 = 44 total cards. Then you have ...
P(black) = (black cards)/(total cards)
P(black) = 22/44
_____
You are expected to be familiar with the fact that a deck of 52 playing cards consists of 4 suits: diamonds, clubs, hearts, spades. Each suit has 13 cards, identified as Ace, 2, 3, ..., 10, Jack, Queen, King. The clubs and spades are black; the diamonds and hearts are red.
what is a polygon with only 3 sides
Answer:
triangle?duh ..........
Ill make you brainlist write in y=mx+b form
Answer:
y = [tex]\frac{2}{5}[/tex] x + 2
Step-by-step explanation:
Graph below.
Answer:
y = 2/5x + 2
Step-by-step explanation:
y = mx + b
First, we find out the slope. The slope is the change in y over the change in x.
The change in y is the second y-value subtracted from the first. The first y-value is 0 and the second is 2.
0 - 2 = -2
The change in x is the second x-value subtracted from the first. The first x-value is -5 and the second is 0.
-5 - 0 = -5
The slope is the change in y over the change in x.
-2/-5 = 2/5
y = 2/5x + b
b is the y-intercept, which is the value of y when x = 0.
When x = 0, y = 2 (0,2), so b = 2.
y = 2/5x + 2
Hope this helps!