Given right triangle
A
B
C
ABC with altitude
B
D
‾
BD
drawn to hypotenuse
A
C
AC. If
A
D
=
3
AD=3 and
A
C
=
13
,
AC=13, what is the length of
A
B
‾
AB
in simplest radical form? (Note: the figure is not drawn to scale.)
Answers
Explanation:
x^2 = AD x AC
And AD = 3, AC = 13
=> x^2 = 13 x 3
=> x^2 = 39
=> x = sqrt(39)
Related Questions
how many solutions does x=-2 have
Answers
Answer:
One solution
Step-by-step explanation:
In a one- variable equation has infinitely many solutions when solving results in a true statement, such as 2=2
In a one- variable equation has one solution when solving results in one value for the variable, such as x = 5
In a one - variable equation has no solution when solving results in an untrue statement, such as 2=3
So, in this case the result x = -2 belongs to the 2nd sentence where it says one solution.
Hope this helps :)
express the given number 5,120,000 in scientific notation
Answers
Answer:
5.12 * 10^6
Step-by-step explanation:
At a baseball game, a vender sold a combined total of 208 sodas and hot dogs. The number of sodas sold was three times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.
Answers
Answer:
sodas = 135 hot dogs = 45
Step-by-step explanation:
(S stands for sodas and H stands for hot dogs)
S + H = 180
3H+H = 180
4H = 180
H = 45
S = 45*3
S = 135
What is 2.5x X 12.5p????????????????
Answers
Answer:
31.25xp
Step-by-step explanation:
Hayhay#5682
add me plz
4 x 6 = 24
Answers
I will later
Your answer is 24
May nilbin be with you
Decrease 151.1 by 84%
Answers
Answer:
84% of 151.1 being reduced from 151.1 is what we need to find.
Thus we shld find 84% of 151.1
12,692.4÷100
126.924
Now subtracting 126.924 from 151.1
151.1 - 126.924
24.176
Answer:
24.176
Step-by-step explanation:
Let's find 84% first of 151.1 before we decrease it.
Since we have 84%, we can turn into a decimal and use it for our sum.
84% = 0.84
We multiply 151.1 by 0.84 in order to find the amount (strange right? I thought it was divide).
151.1 × 0.84 = 126.924
Now that we have 84% of 151.1, let's decrease it. We need to take them both away from each other, biggest number first!
151.1 - 126.924 = 24.176
And that is the final answer!
Adam is selling cookies for a fundraiser. The cookies cost him $1.49 a box. He is selling them for $2.25 a box. Adam sold 209 boxes of cookies. How much profit did Adam earn?
Answers
f(2) if f(x) = 2x - 5
Answers
Answer:
The answer is 4.
Step-by-step explanation:
Answer:
f(2) = -1
Step-by-step explanation:
Plug in 2 for x in the equation: f(2) = 2(2) - 5
Remember order of operations/ PEMDAS
f(2) = 4-5
f(2) = -1
PLEASE HELPPLEASEEEEEE
Answers
Answer:
yes they are
Step-by-step explanation:
Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".
Solve the problem by making up an equation. A man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. How far from his house was his appointment?
And if the appointment is x miles away from man's house the equation is
Answers
Answer:
40 miles
Step-by-step explanation:
Since we are dealing in mph, change the minutes to hr
15 min: 15/60 = .25 hrs
3 min: 3/60 = .05 hrs
:
Let t = his normal drive time to work in hrs
then
40t = the distance to work
Write a distance equation; dist = speed * time
50(t-.25 + .05) = 40t
50(t - .20) = 40t
50t - 10 = 40t
50t - 40t = 10
10t = 10
t = 1 hr normal time to work
therefore
40(1) = 40 mi to work
:
:
Confirm this by finding the dist when he went 50 mph for 48 min (.8hrs)
50(1-.25+.05) = 50(.8) = 40 mi also
(solve by substitution or elimination)Maci’s closet is a rectangle with a perimeter of 18 ft. Its length is 5 ft greater than its width.
Find the dimensions of her closet.
Answers
Answer:2x7
Step-by-step explanation:2(x+5)+2x=18. 4x+10=18. x=2. 2x7.
PLEASE HELP ITS MATH!!!!
This triangle has one side that lies on an extended line segment. Based on this triangle, what statement about x is true? A. x = 27 because 180−109−44=27 B. x = 65 because 109−44=65 and 44 + 65 = 109 C. x = 71 because 180−109=71 D. x = 153 because 109 + 44 = 153 and 153−44=109
MEASUREMENTS (down below)
A triangle with base on an extended line. Two angle measures are given. Top interior angle is forty-four degrees. Lower right exterior angle is one hundred nine degrees. Lower left interior angle is labeled x degrees.
Answers
Answer:
B. x = 65 because 109−44=65 and 44 + 65 = 109
Step-by-step explanation:
Given :
The triangle below :
Sum of interior angles of a triangle :
(44° + x + (180 - 109) = 180°
44° + x + 71° = 180
115° + x = 180°
x = 180° - 115°
x = 65°
pls help wil give brainliest for full answer
Answers
Answer:
1. angle m=angle L
2.MR=RL
3.ang;e O=angle P
Triangle MOR= triangle LPR
ASA
4. angle M= angle D
5. AM=RD
6. MC=DN
Triangle AMC= RDN
by SSA
Step-by-step explanation:
Answer:
1. angle m=angle L
2.MR=RL
3.ang;e O=angle P
Triangle MOR= triangle LPR
ASA
4. angle M= angle D
5. AM=RD
6. MC=DN
Triangle AMC= RDN
by SSA
Engineers must consider the breadths of male heads when designing motorcycle helmets. Men have head breadths that are normally distributed with a mean of 6.0 inches and a standard deviation of 1.0 inches. If one male is randomly selected, find the probability that his head breadth is less than 6.2 inches.
Answers
Answer:
0.57926
Step-by-step explanation:
Given that :
Mean, m = 6
Standard deviation, s = 1
P(x < 6.2)
Obtain the Zscore :
Zscore = (x - m) / s
Zscore = (6.2 - 6) / 1
Zscore = 0.2
P(Z < 0.2) = 0.57926 (Z probability calculator)
Probability of having head breadth less than 6.2 is 0.57926
Need help with this (10 points)
Answers
Answer:
5 is greater than equal to 5. So f(5)=5+8=13
Step-by-step explanation:
If departure time of a train is 03 45 and arrival time is 04 50. What will be the journey time? * A)1 h 20 min B)1 h 10 min C)1 h 05 min
Answers
Answer:
C)1 h 05 min
Step-by-step explanation:
If departure time of a train is 03 45 and arrival time is 04 50. What will be the journey time? * A)1 h 20 min B)1 h 10 min C)1 h 05 min
The journey time is calculated as:
Arrival time - Departure time
= 04:50 - 03:45
= 01:05
Therefore, the journey time = 1 hr 05 minutes
Option C is correct
two times p plus five is greater than or equal to three times p minus ten
Answers
Answer:
2p + 5 ≥ 3p - 10
Step-by-step explanation:
Answer: 2p+5 ≥ 3p-10
50 time 40 please awnser correctly
Answers
Answer:
2000
Step-by-step explanation:
50 * 40 = 2000
Answer:
the awnser is 2000 have a nice day
It takes 3 1/2 spoons of chocolate syrup to make 3 2/5 gallons of chocolate milk. How many spoons would it take to make 4 gallons of chocolate milk?
Answers
Answer:
4 2/17
Step-by-step explanation:
It takes 3 1/2 spoons of chocolate syrup to make 3 2/5 gallons of chocolate milk
3 1/2= 3 2/5
7/2= 17/5
1 gallon = 7/2÷17/5
= 7/2 × 5/17
= 35/34
Therefore the number of spoons required to make 4 gallons
= 4 × 35/34
= 140/34
= 70/17
= 4 2/17
What is the sum of x^
2 – 3x + 7 and 3x² + 5x – 9?
1) 4x² – 8x + 2
2) 4x² + 2x + 16
3) 4x2 – 2x – 2
4) 4x² + 2x - 2
Answers
Answer:
4. [tex]4x^{2} +2x-2[/tex]
Step-by-step explanation:
To add these two equations together, you have to combine like terms.
1. [tex]x^{2} +3x^{2} = 4x^{2}[/tex]
2. [tex](-3x)+5x = 2x[/tex]
3. 7 - 9 = -2
Then you just combine all of these terms together into one equation and you have your answer.
Hope this helped!
Last year, Maya opened an investment account with 8,800. At the end of the year, the amount in the account had decreased by 26.5%. How much is this decrease in dollars? How much money was in her account at the end of last year?
Answers
Answer:
Results are below.
Step-by-step explanation:
Giving the following information:
Initial investment= $8,800
Percentage decrease= 26.5%
To calculate the money Maya lost, we need to use the following formula:
Decrease on dollars= 8,800*0.265
Decrease in dollars= $2,332
At the end of the years she has:
Money left= 8,800 - 2,332
Money left= $6,468
Class A has 20 pupils and class B has 22 pupils.
Both classes sit the same maths test.
The mean score for class A is 40.
The mean score for both classes is 47.
What is the mean score (rounded to 2 DP) in the maths test for class B?
Answers
40×20=800 i just gest so if you wana delite my answer go then
This figure is 1/4 of a circle.
What is the best approximation for the perimeter of the figure?
Use 3.14 to approximate pi.
A 4.7 cm
B 7.7 cm
C 10.7 cm
D 18.8 cm
Answers
Answer:
7.7
oof oof oof oof oof oof oof oof oof oof oof
Answer:
10.7
Step-by-step explanation:
Please help. I put a picture to make the question more clear.
Answers
Answer:
3/x+5
Step-by-step explanation:
4x+8/x^2+5x+6 x 3x+9/4x+20=
4(x+2)/x^2+3x+2x+6 x 3(x+3)/4(x+5)
reduce
x+2/x(x+3)(x+2) x 3(x+3)/x+5
factor expression
x+2/(x+3)(x+2) x 3(x+3)/x+5
reduce
3/x+5
Show work for full credit please.
Answers
Answer:
x = 7.5
Step-by-step explanation:
This can be solved via cross multiplying.
6x = 5 × 9 | Multiply the denominators by the respective nominators.
6x = 45 | Multiply 5 × 9
x = 7.5 | Divide 45 ÷ 6 (Division Property of Equality)
Answer:
x=7.5
Step-by-step explanation:
for this you would cross-multiply to get x
6x=9(5)
6x=45
x=7.5
HELP ME PLSSS :((PLSSSS
Answers
Answer:
40 degrees
Step-by-step explanation:
all angles add to 180* in a triangle
65+75=140
subtract from 180, you get 40 which is your answer
Donna is saving money to buy a game. The game costs $30, and so far she has saved three-fifths of this cost. How much money has Donna saved?
Answers
Answer:
30*3/5=90/5=$18
Step-by-step explanation:
The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?
Answers
Answer:
Step-by-step explanation:
The average ant is about 7.5x10^-2 inches in length. The average adult human is about 6.72x10^1 inches tall. About how many times bigger is the human than an ant?
What is a dot plot and how do you read it? Check all that apply.
O A dot plot is a simple plot that displays data values as dots above a number line
O Dot plots show the frequency with which a specific item appears in a data set.
O 3 students spent 4 hours on homework.
O 5 students spent 2 hours on homework.
O Dot plots show the distribution of the data.
O Students spent 1 to 6 hours on homework.
Answers
Answer:
I need help on the same exact question.I'll figure it out for you though
Step-by-step explanation:
So I think it's the first one, the fourth one, and the last one, and the second one.
I hope it helps you!
The soccer club has planned a trip to a tournament. The cost of the van is
$231. When 3 students who are not members of the club join the trip, the
transportation cost per person drops by $4.50. How many soccer club
members are going to the tournament?
O A. -14, 11
B. 11
C. -14
D. 14
Answers
Answer:
d
Step-by-step explanation:
Answer:
b
Step-by-step explanation: