Answer:
13.7 feet
Step-by-step explanation:
The ladder and the building will form a right triangle with the ladder's length is hypotenuse
so if a is the height of the building
c^2 = a^2 + b^2
(15)^2 = a^2 + (6)^2
225 = a^2 + 36
a^2 = 225 - 36 = 189
a = √(189 = 13.7
2
1. Vyjadrite v percentách: a) 0,08
60
b)
100
c)
5
2. Vypočítaj 1% z týchto čísel :a) 1 320 litrov; b) 80 kg
3. Zo 650 žiakov školy malo čisté jednotky 52 žiakov. Koľko je to percent ?
4. Vypočítaj : a) 12% z 2500 km
b) 76% z 24 cm
5. Koľko %je : a) 72 zo 400
b) 18 min z 1 hod (1hod. = 60min.)
6. Vypočítaj základ, ak 35%je 525
7. Playstation zlacnelo o 25% Jeho pôvodná cena bola 500 € Aká je jeho nová cena ?
8. Hokejový brankár chytil počas jedného zápasu 36 striel, čo je 90% všetkých striel
vystrelených na bránku.
a) Kolkokrát hráči vystrelili na bránku?
b) Kolko gólov dostal?
BONUSOVA ULOHA
Answer:
5
Step-by-step explanation:
x(2x + 1)^-2/3 + (2x + 1)^1/3 Factor completely
The complete factor is (2x+1)/(2x+1)^2
(2x+1)^-2/3+(2x+1)^1/3
X= 1/(2x+1)^2/3+(2x+1)^1/3
(3)^-2=1/3^2
The complete factor form is
x/(2x+1)^2/3+(2x+1)^1/3
=1 x+(2x+1)^2/3×(2x+1)^1/3/
(2x+1)^2/3
x+(2x+1)^2/3+1/3 =3/3=1
/
(2x+1)^2/3
X+(2x+1)/(2x+1)/(2x+1)^2/3
3x+1/(2x+1)^2/3 (Ans)
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Suppose a radioactive substance has a half-life of 1000 years. What fraction will be left after 1000 years?
Answer:
[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
The half life is the amount of time it takes a substance to decay to half of its original amount.
Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.
So, the fraction that will be left after 1000 years is [tex]\frac{1}{2}[/tex]
Answer:
1/2
Step-by-step explanation:
so if u do the waffalineneh times by arcimate it would equivently be the answer on top
A store bought an airplane poster and marked it up 100% from the
original cost of $5. Later on, Isabella purchased the airplane poster
and paid 10% sales tax. How much, including tax, did she pay for the
airplane poster?
She paid 11 dollars total
Step-by-step explanation:
100% of $5 is $10
10% of $10 is $1
10 + 1 = 11
please help i give extra points
Answer:
(d)
Step-by-step explanation:
You want the inverse function of the given one-to-one function.
One-to-oneA function given as ordered pairs is one-to-one if no x-values are repeated and no y-values are repeated.
Inverse functionAs the directions tell you, the inverse function is found by changing the order of the values in each ordered pair.
function ⇒ inverse function
(-1, 4) ⇒ (4, -1) . . . . for example
See the attachment for the complete list.
What is an integer between -5. And -6
Answer:
There isn't one!
Step-by-step explanation:
Integers are numbers with no fractional or decimal part. There is no non-fractional or decimal number between two consecutive integers, so the answer is there isn't one!
Select the correct answer.
The graph below represents the following system of inequalities.
y> - 2
y > 21 + 2
Which point (x,y) satisfies the given system of inequalities?
OA (-1,-6)
OB. (1,-6)
OC. (-3,-1)
The answer is C: (-3,-1)
To test if points satisfy an equation, all you need to do is test the numbers in both of the equations it provides you
Here is proof the answer is C :
y > x - 2
(lets plug in point C)
-1 > -3 - 2
solve
-1 > -5 ?
Yes this statement is true- onto the next inequalitity!
y > 2x + 2
-1 > 2(-3) + 2
solve
-1 > -6 + 2
-1 > -4 ?
Yes, this inequality is true too!
Know we know answer c (-3,-1) is the right answer!
The point (x,y) satisfies the given system of inequalities is C. (-3,-1).
What is a solution set to an inequality or an equation?If the equation or inequality contains variable terms, then there might be some values of those variables for which that equation or inequality might be true. Such values are called solution to that equation or inequality.
Given that The graph below represents the following system of inequalities.
y> - 2
y > 21 + 2
So, y > x - 2
Lets plug in point C;
-1 > -3 - 2
solve;
-1 > -5 ?
Yes this statement is true- onto the next inequalitity.
y > 2x + 2
-1 > 2(-3) + 2
solve;
-1 > -6 + 2
-1 > -4 ?
Yes, this inequality is true too!
Therefore, the point (x,y) satisfies the given system of inequalities is C. (-3,-1).
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Translate the phrase "2 times the sum of −3 and m" into an algebraic expression.
The algebraic expression of the phrase "2 times the sum of −3 and m" is 2(-3+m)
Given,
The expression
"2 times the sum of −3 and m"
We know algebraic expression is the expression which consist of variables and constants with the algebraic operation.
Here,
2 times the sum of -3 and m
sum of -3 and m = -3+m
2 times the sum of -3 and m = 2×(-3+m)
The algebraic expression is 2(-3+m)
Hence, The algebraic expression of the phrase "2 times the sum of −3 and m" is 2(-3+m)
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Write a linear equation that passes throughthe point (2, -9) and has a slope of -5 in slope-intercept form. Help pls
which equation is equivalent to 10 = 3/2 (2x +4)
a. 10 = 3x +2
b . 10 = 3x + 4
c. 10 = 3x + 6
d. 10 = 3x + 12
Answer:
A
Step-by-step explanation:
Answer:
C. 10 = 3x + 6
Step-by-step explanation:
10 = 3/2 (2x + 4)
becomes
10 = 3x + 6
Divide 3 over 4 ÷ 1 over 8 = ____. Numerical Answers Expected! Answer for Blank 1:
Answer:
0.09375
Step-by-step explanation:
brainest plz
please help asap!! im on a time limit geomtry
Answer:
[tex]B.\ TE\ congruent\ to\ EN[/tex]
Step-by-step explanation:
[tex]As\ we\ know\ that,\\A\ median\ bisects\ the\ base\ side\ of\ a\ triangle.\\Hence,\\As\ AE\ is\ the\ median\ in\ this\ case,\\it\ bisects\ TN\ into\ congruent\ sides\ TE\ and\ EN.\\Hence,\\TE\ congruent\ to\ EN\\[/tex]
Describe the slope of the line. Then find the slope.
The line from left to right. So, the slope is .
Question 2
slope:
complete the last four terms by dragging the missing value to correct locations in the expression
Answer:
Brainly does not have the correct answer listed as a choice - it should be [tex]2187y^{14}[/tex]
Step-by-step explanation:
Martha jarred 6 liters of jam after 2 days. How many days does Martha need to spend making jam if she wants to jar 21 liters of jam in all? Assume the relationship is directly proportional.
Answer: 7
Step-by-step explanation:
if Martha jarred 6 liters of jam in 2 days,
she will jarred 3 litters of jam in one day
for 21 litters she will need 7 days
21/3=7
Pls solve this somebody....
=====================================================
Explanation:
When two letters are placed together without any space between them, this implies multiplication.
gf = g times f
So we'll be multiplying the functions g and f.
There are two ways to approach this problem.
----------------------------------------------
Method 1
First we need to find f(4) and g(4)
f(x) = 2x+3
f(4) = 2*4+3
f(4) = 8+3
f(4) = 11
g(x) = 2x^2-1
g(4) = 2(4)^2-1
g(4) = 2(16)-1
g(4) = 32-1
g(4) = 31
Now we multiply the results
gf(4) = g(4)*f(4)
gf(4) = 11*31
gf(4) = 341
----------------------------------------------
Method 2
We'll multiply g(x) with f(x) like so
gf(x) = g(x)*f(x)
gf(x) = (2x^2-1)*(2x+3)
gf(x) = 2x^2*(2x+3) - 1(2x+3) .... distribute
gf(x) = 4x^3+6x^2-2x-3 .... distribute again
Now plug in x = 4
gf(x) = 4x^3+6x^2-2x-3
gf(4) = 4(4)^3+6(4)^2-2(4)-3
gf(4) = 4(64)+6(16)-2(4)-3
gf(4) = 256+96-8-3
gf(4) = 341
We get the same result. Method 1 may be the better method, but it will depend on your preference.
pamela ran 7/10 mile on Tuesday and 3/8 mile on Thursday. How much fatter did she run on Tuesday ?
Answer:
[tex]Difference = \frac{13}{40}[/tex]
Step-by-step explanation:
Given
[tex]Thursday = \frac{3}{8}\ mile[/tex]
[tex]Tuesday = \frac{7}{10}\ mile[/tex]
Required
How much farther is she on Tuesday
To do this, we simply calculate the difference between distance covered on both days.
[tex]Difference = Tuesday-Thursday[/tex]
[tex]Difference = \frac{7}{10} - \frac{3}{8}[/tex]
Take LCM
[tex]Difference = \frac{28- 15}{40}[/tex]
[tex]Difference = \frac{13}{40}[/tex]
Hence, she ran 13/40 mile farther on Tuesday
The square root of the product of the number z and itself
Answer:
z
Step-by-step explanation:
z . z = z² and √z² = z
Scientists often write very large or very small numbers using exponents. How might a scientist write the number shown using exponents?
Answer:
It makes comparing magnitudes easier. It is much easier to estimating numbers easier. you can easily say that 0.0000000009 is smaller than 0.0000001 and even say but how much, and it reduces the amount of time you have to read the number, since instead of having 0s, you have the amount of 0s.
Sabrina made three kinds of jewelry. She made 5 bracelets, 8 necklaces, and 3 rings. Alex made twice as many pieces of jewelry as
Sabrina. How many pieces of jewelry did Alex make?
Answer:
32
Step-by-step explanation:
2 * (5 + 8 + 3) = 2 * 16 = 32
The ratio of cars to trucks in the parking lot is 3:5. If there are 360 vehicles in the parking lot, how
may are trucks?
Answer:
135
Step-by-step explanation:
3+5=8. 360÷8=45. 45×3=135
If the ratio of cars to trucks in the parking lot is 3:5. If there are 360 vehicles in the parking lot, then there are 225 trucks
What is Ratio?A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.
The ratio of cars to trucks in the parking lot is 3:5.
there are 360 vehicles in the parking lot
(360-x)/x=3/5
Cross Multiplication
5(360-x)=3x
1800-5x=3x
1800=8x
x=225
So there are 225 trucks.
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tony earns $45 for walking 5 dogs. how much would he earn for each dog
Answer:
9 dollars per dog
Step-by-step explanation:
45/5=9
you divide to find the unit rate per 1 dog walked.
Name a pair of angles that are a linear pair.
Answer:
I think it's c
Step-by-step explanation:
but I might be
Please please help me!!!
Answer:
✔️The correct system of linear equations:
2x + 3y = 34
3x + 2y = 36
Cost of each roast beef sandwich: $8
Cost of each turkey sandwich: $6
Step-by-step explanation:
Cost of each roast beef sandwich = x
Cost of each turkey sandwich = y
First platter consists of:
2 roast beef sandwiches, which costs 2 × x = 2x, and,
3 turkey sandwiches, which costs 3 × y = 3y.
Total cost of first platter is $34.
Thus, an equation that represents this scenario would be:
2x + 3y = 34.
The other platter consists of:
3 roast beef sandwiches, which costs 3 × x = 3x, and,
2 turkey sandwiches, which costs 2 × y = 2y.
Total cost is $36.
Thus, an equation that represents this scenario would be:
3x + 2y = 36.
The correct system of linear equations would be:
2x + 3y = 34
3x + 2y = 36
Find the value of x and y by solving simultaneously.
Thus:
2x + 3y = 34 ----› Eqn. 1 × 2
3x + 2y = 36 ----› Eqn. 2 × 3
4x + 6y = 68
9x + 6y = 108
Subtract
-5x = - 40
Divide both sides by -5
x = 8
Cost of each roast beef sandwich = x = $8
Substitute x = 8 into eqn. 1.
2x + 3y = 34 ----› Eqn.
2(8) + 3y = 34
16 + 3y = 34
3y = 34 - 16
3y = 18
Divide both sides by 3
y = 6
Cost of each turkey sandwich = y = $6
use a decimal number to describe the shaded amount
5 out of 10
Answer:
0.5 i believe
Step-by-step explanation:
Answer:
answer:
0.5
Step-by-step explanation:
hope it helps
n the middle of a game, Dawn has a score of -17. At the end of the game, Dawn’s score increases by 21. What is Dawn’s score at the end of the game? Show your work.
Answer: Dawn's score is 4
Answer: 4
brainlist pls???
Step-by-step explanation:
7-21=14
14-10=4
A function is shown below :
what is f(3)?
Please explain if possible!! Thank you!!
Given:
[tex]f(x)=\begin{cases}-\dfrac{1}{2}x^2 & 0<x\leq 3 \\ x^3+2x & x>3\end{cases}[/tex]
To find:
The value of f(3).
Step-by-step explanation:
For x=3, we have
[tex]f(x)=-\dfrac{1}{2}x^2[/tex]
Putting x=3 in the above function, we get
[tex]f(3)=-\dfrac{1}{2}(3)^2[/tex]
[tex]f(3)=-\dfrac{1}{2}(9)[/tex]
[tex]f(3)=-\dfrac{9}{2}[/tex]
Therefore, the value of f(3) is [tex]-\dfrac{9}{2}[/tex]. So, the correct option is a.
PLZ HELP WILL GIVE BRAINLEST
please help meeeeeee
Answer: its 1/4 per minute i took the test
Step-by-step explanation:
the price of a 5-minute call is 1.50 what is the price of a 12-minute call
Answer:
3.70
Step-by-step explanation: