Answer:
36 black keys
Step-by-step explanation:
9(88-x)=13x
792-9x=13x
792=22x
x=36
Hope this helps: )
31 POINTS!!!!!! PLEASE HELP ME AND EXPLAIN YOUR ANSWER!!!!!! HELP 31 POINTS!
WILL MARK BRAINLIEST AND ITS DUE SOON!!!! please help me.
please answer in steps :(
Answer:
h = 36.75 feet
Step-by-step explanation:
h(t) = - 3t² + 15t + 18
x - coordinate of vertex is ( - [tex]\frac{b}{2a}[/tex] )
t = - 15 ÷ [ 2( - 3 )] = 2.5 seconds
h(t) = - 3(2.5)² + 15(2.5) + 18 = 36.75 feet
A television screen is a rectangle 44 inches wide and 24 inches long. A television size is advertised as the length of its diagonal. What is the size of the television? In other words, what is the length of the diagonal? Round your answer to the nearest hundredth.
Answer:
50 inches Approx
Step-by-step explanation:
GIven data
Width= 44in
Length= 24in
Diagonal=???
We know that the expression for the diagonal is given as
D^2= W^2+L^2
substitute
D^2= 44^2+24^2
D^2= 1936+576
D^2= 2512
D=√2512
D= 50.11
Hence the size of the TV is 50 inches Approx
Solve the equation for x.
2 x/3 = 100.6
A) x ≈ 2.22
B) x ≈ 19.96
C) x ≈ 0.41
D) x ≈ 6.65
Answer:
150.9
Step-by-step explanation:
2/3x=100.6
x=100.6/(2/3)
x=100.6(3/2)
x=150.9
Answer:
It is answer B
Step-by-step explanation:
Are the Rectangles Similar? Why you why not?
Answer:
The rectangles are similar.
Step-by-step explanation:
They are similar because the rectangle on the bottom is two times bigger than the rectangle on the top.
The figure shows secant GC and tangent GB intersecting to form an angle. Find x and y. If necessary, round to the
tenths place.
A X= 52.5
V = 30
B. = 54
= 60
C. X = 52.5
y = 93
D. 7 - 106.5
y = 60
1/4x - 13 = 1/4(x + 13) how many solutions
Answer: No Solutions
Step-by-step explanation:
There are no values of
x
that make the equation true.
No solution
6 6/13 - 4 3/13
I NEED HELP WITH THIS ASAP THE ASSIGNMENT IS DUE IN 10 MINUTES!!!!!
( its a fraction btw)
I need an answer for this lolz
Answer:
Where is the coordinate plane?
Step-by-step explanation:
What is the radius of a cylinder with a volume of 60,750πcm3
and a height of 750cm
?
Answer:
60,000
Step-by-step explanation:
I may be wrong hope not.
If a line goes through Point (1,2) and has a slope of 2 then find R if the line also goes through the point (r,8)
Answer: r = 4
Step-by-step explanation:
See the image.
The simple interest owed on a loan of $5,600 after 4 years is $1,008. What percent represents the annual interest rate on the loan?
9514 1404 393
Answer:
4.5%
Step-by-step explanation:
The interest is given by ...
I = Prt . . . . interest at annual rate r for t years on principal P
1008 = 5600r·4
1008/22400 = r = 0.045 = 4.5%
The annual interest rate on the loan is 4.5%.
The eight-digit number ppppqqqq, where p and q are digits, is a multiple
of 45. What are the possible values of the eight-digit number? multiples
Answer:
There are two possible numbers: 99 990 000 and 44 445 555
Step-by-step explanation:
The multiples of 45 are 5 and 9
There are two possible numbers: 99 990 000 and 44 445 555.
What will be the two numbers?
Numbers are the numerical values like 1,2,3 etc.It is given that The eight-digit number ppppqqqq, where p and q are digits, is a multiple of 45.
Every multiple of 45 is a multiple of both 5 and 9 here P and Q are single-digit integers.
By using the rules of divisibility we can see that if q=0 or q =5 so 4P+4q is a multiple of 9.
If q=0 4P is a multiple of 9 P=9
If q =5 ( 4p + 5 ) is a multiple of 9
Hence p + 5 = 9 and p =4
Therefore there are two possible numbers: 99 990 000 and 44 445 555.
To know more about numbers follow
https://brainly.com/question/251701
#SPJ2
A boat travelled 336 km downstream with the current. The trip downstream took 12 hours.
a) Come up with an equation to describe this relationship
b) If the current is moving at 2 km/h, how fast is the boat moving from its engine?
Answer:
We know the distance (d) equation in terms of rate (r) and time (t) as:
d=rt
Step-by-step explanation:
We have given d=336 km and t= 12 hours, so we have: 336 km = 12t <-- this is our equation.
Divide each side by 12 to solve for t:
12t/12=336/12
t= 28 km/ hour
Will mark brainiest if correct!
Find the area of a triangle ABC when c = 15 m, a = 20 meters, and b = 10 meters.
Answer:
75
Step-by-step explanation:
10 * 15 / 2
do you have a picture of it so I can see if my answer is correct
The area of triangle is 72.62 square meters.
What is a triangle?A triangle is a flat geometric figure that has three sides and three angles. The sum of the interior angles of a triangle is equal to 180°. The exterior angles sum up to 360°.
For the given situation,
The sides of triangle are
a = 20 meters, b = 10 meters, c = 15 meters
The formula of area of triangle is
[tex]A=\sqrt{s(s-a)(s-b)(s-c)}[/tex], where
[tex]s=\frac{a+b+c}{2}[/tex]
Now, calculate s as
[tex]s=\frac{20+10+15}{2}[/tex]
⇒ [tex]s=\frac{45}{2}[/tex]
⇒ [tex]s=22.5[/tex]
Thus area of triangle is
⇒ [tex]A=\sqrt{22.5(22.5-20)(22.5-10)(22.5-15)}[/tex]
⇒ [tex]A=\sqrt{22.5(2.5)(-12.5)(-7.5)}[/tex]
⇒ [tex]A=\sqrt{5273.4375}[/tex]
⇒ [tex]A=72.618[/tex] ≈ [tex]72.62[/tex]
Hence we can conclude that the area of triangle is 72.62 square meters.
Learn more about triangles here
https://brainly.com/question/11708636
#SP2
A 35-foot ladder is leaning against the side of a building and is positioned such that the base of the ladder is 21 feet from the base of the building. How far above the ground is the point where the ladder touches the building?
Answer:
height = 28 feet
Step-by-step explanation:
using the Pythagorean theorem:
height = 35² - 21²
height² = 1225 - 441 = 784
height = 28 feet
PLEASE HELP! 100 POINTS ! AND BRAINLIEST.
Find the area of the following figure. Explain or show how you got your answer.
Answer:
26.5 units
Step-by-step explanation:
i just counted the units on the inside.
but you could also split this shape into two rectangle like shapes and then find the area of both of those and then add them together.
hope this helps :)
Answer:
area =no of full square + half square =24+1/2×5=26.5 unit ²
Question 19 is already answered I really only need question 20 answered :))
Answer:
110
Step-by-step explanation:
I would put 7c and 9t because c would mean you're putting car down for both numbers on the first question...
7c + 9t
7(8) + 9(6)
56 + 54
110
Brent leaves school to go home. He walks 10 blocks north and then 6 blocks west. If Brent could walk in a straight line to the school, what is the exact distance between Brent and school
Answer:
11.66 units
Step-by-step explanation:
Given that he walks 10 blocks north and then 6 blocks west..
When combined with the straight line to the school, this forms a right angled triangle with the straight line as the hypotenuse.
Hence, let the straight line be h
h^2 = 10^2 + 6^2 (using Pythagoras theorem)
h^2 = 100 + 36
h^2 = 136
h = √ 136
h = 11.66 units
Which of the following coordinate pairs make the equation x - 9y = 12 true?
(12, 0)
(0, 12)
(3, -1)
(0, -4/3)
Answer:
first one............
(20,8),(9,16). Can u do a step by step
Answer: [20x, 8y] [9x, 16y]
Step-by-step explanation:
Go on x value 20 and go up to 8 on y value.
Go on x value 9 and go up 16 on y value.
Find the exact angular velocity in radians per hour wind W= 4.1 rpm
Answer:
1545.66 rad/h
Step-by-step explanation:
We need to find the angular velocity in rad/hour when wind is moving with a speed of 4.1 rpm.
We know that,
1 revolution = 2π rad
1 hour = 60 minute
So,
[tex]4.1\ rmm = 4.1\times \dfrac{2\pi }{(\dfrac{1}{60})}\ rad/h\\\\=1545.66\ rad/h[/tex]
So, the required angular velocity is 1545.66 rad/h.
You earn $36 over a weekend shoveling snow. It snows again on Monday night, and after another afternoon of snow shoveling you now have $42 total dollars. How much money did you eam on Monday( include equation)
find the different pen! ⬇️
182
7) Samantha has saved $100 to buy a new laptop. Each month, she saves $15 towards the laptop. What expression could be used to find the total amount saved after M months? Explain why
pliss i need it for today
Answer:
Step-by-step explanation: Have you used my tutor because it works and helps me by them explaining every step.
https://app.paper.co/dashboard
This is not a virus just saying, my school uses this by the way.
What type of algebraic equation is 2x+5?
A. Linear equation
B. Quadratic equation
C. Cubic equation
D. None of these
Answer:
A. Linear equation
Step-by-step explanation:
Sinerch ko lang,
Answer:
A linear equation
Step-by-step explanation:
because 2x+5
Please, help me!! please!
Answer:
64,26
Step-by-step explanation:
The sum of the angles of a triangle add to 180 degrees
The box means its is a 90 degree angle
90 + 2x+ x-6 = 180
Combine like terms
84+3x = 180
Subtract 84 from each side
84+3x-84 = 180-84
3x=96
Divide by 3
3x/3 = 96/3
x = 32
The top angle is
2x = 2*32 = 64
The bottom right angle is x-6
32-6 = 26
Bella can run a mile in 9.54 minutes. Linda can run a mile in 8.22 minutes. How much faster can Linda run than Bella? Justify your reasoning.
Answer:1.16 times
Step-by-step explanation:
Given
Bella can run a mile in 9.54 minutes
Linda can run a mile in 8.22 minutes
We know, [tex]\text{distance=speed}\times\text{ time}[/tex]
Speed of Bella, for running a mile is
[tex]\Rightarrow v_b=\dfrac{1}{\frac{9.54}{60}}=\dfrac{60}{9.54}\\\\\Rightarrow v_b=6.29\ mph[/tex]
Speed of Linda, for running a mile is
[tex]\Rightarrow v_l=\dfrac{1}{\frac{8.22}{60}}=\dfrac{60}{8.22}\\\\\Rightarrow v_l=7.29\ mph[/tex]
So, Linda is faster than Bella, as her speed is more compared to Linda.
Linda is [tex]\frac{9.54}{8.22}=1.16[/tex] times faster than bella
f(x) = 4x - 7
find f(-3) = __________
Answer: -19 is the answer
Step-by-step explanation:
∠A and ∠ B ∠B are supplementary angles. If m ∠ A = ( 4 x − 16 ) ∘ ∠A=(4x−16) ∘ and m ∠ B = ( 8 x + 4 ) ∘ ∠B=(8x+4) ∘ , then find the measure of ∠ A ∠A.
Answer:
∠ A = 48°
Step-by-step explanation:
Supplementary angles are those angles that measure up to 180 degrees.
∠A and ∠B are supplementary angles. If m ∠ A = ( 4 x − 16 ) ∘ and m ∠ B = ( 8 x + 4 ) ∘,then find the measure of ∠ A
Step 1
∠A + ∠B = 180°
(4x−16)° + (8x+4)° = 180
4x - 16 + 8x + 4 = 180
12x -12 = 180
12x = 180 + 12
12x = 192
x = 192/12
x = 16
Step 2
To find the measure of ∠ A
∠ A = 4x - 16
= 4 × 16 - 16
= 64 - 16
= 48°
Therefore,
∠ A = 48°
Hurry please!!!!!
Andrea wrote a check for $270. She also made two withdrawals of $80
each. Write the total change to her account balance as an integer.
Answer:
110$ left in her bank account
Step-by-step explanation:
first you do 80×2=160 then you would do 270-160=110 sorry if this is not the right answer but I did try to help you!
Distribute (2m-5m)(-5)
First Method (Distributive Property)
(2m - 5m) (-5)
Rearrange the equation to make it easier.
(-5) (2m - 5m)
In distributive property, it's all about multiplying. The -5 goes to the 2m and the 5m. Like this: (-5 • 2m) - (-5 • 5m).
-10m + 25m
15m
Second Method
(2m - 5m) (-5)
Since 2m and 5m have the same variable, we can subtract them.
(-3m) (-5)
Multiply.
15m
15m is your answer. I hope this helps!
