Answer:
7.12
Step-by-step explanation:
Standard form is writing a number with numbers instead of letters. Word form example: three. Standard form example: 3. Because the word "hundredths" has the "ths" at the end of it, on the right side of the decimal.
Find the distance between the two points in simplest radical form.
(-9,5) and (0,0)
Answer:
[tex]\sqrt{106}[/tex] units
Step-by-step explanation:
Calculate the distance d using the distance formula
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (- 9, 5)
d = [tex]\sqrt{(-9-0)^2+(5-0)^2}[/tex]
= [tex]\sqrt{(-9)^2+5^2}[/tex]
= [tex]\sqrt{81+25}[/tex]
= [tex]\sqrt{106}[/tex]
SOLVE THE EQUATION: 25 - 3X = 40 (HINT: WATCH YOUR NEGATIVE SIGNS
srry for all caps...
Answer:
x = -5
Step-by-step explanation:
-3X + 25 =40 : Rearrange the expression
-3X = 40 - 25 : Separate the constants and variables
-3X=15 : Subtract the numbers
-3X/-3 = 15/-3 : Divide both sides by -3
Hope that helps
Question 4
Solve for x. Round your answer to two decimal places. Do NOT include x= in your final
answer
10
х
30°
The value of x is 20.
What are trigonometric identities?There are three commonly used trigonometric identities.
Sin x = Perpendicular / Hypotenuse
Cosec = Hypotenuse / Perpendicular
Cos x = Base / Hypotenuse
Sec x = Hypotenuse / Base
Tan x = Perpendicular / Base
Cot x = Base / Perpendicular
We have,
Sin 30 = 10 / x ______(10
We know that,
Sin 30 = 1/2 _____(2)
So,
Substituting (2) in (1).
1/2 = 10/x
x = 10 x 2
x = 20
Thus,
The value of x is 20.
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I don’t know the answer I just need some points to ask more questions !!! have a good day !!
Answer:
have a good day too
Step-by-step explanation:
Need help with this one please
Answer:
100°
Step-by-step explanation:
I'm sorry, I don't quite remember the name of the four sided shape when it fits into a circle but when it does, the opposite angles are equal to 180° therefore we say 180° - 80° and get 100° for the opposite angle which is U
Find the lengths of the missing sides in the pairs of similar triangles
Answer:
x = 4
Step-by-step explanation:
The inner and outer triangles are similar, thus the ratios of corresponding sides are equal, that is
[tex]\frac{x}{5}[/tex] = [tex]\frac{8}{10}[/tex] ( cross- multiply )
10x = 40 ( divide both sides by 10 )
x = 4
These questions are harder than the ones from in person school PLEASE ANSWER!
Answer:
D
Step-by-step explanation:
I need help with this one
Answer:
60
Step-by-step explanation:
The answer of this question is 60 degree
A sound measures 42 dB. The intensity of a second sound is four times as great. What is the decibel level of this
second sound?
Answer:
The decibel level of this second sound is 48.021 decibels.
Step-by-step explanation:
The acoustic intensity ([tex]B_{dB}[/tex]), measured in decibels, is defined by the following formula:
[tex]B_{dB} = 10\cdot \log_{10}\left(\frac{I}{I_{o}} \right)[/tex] (1)
Where:
[tex]I_{o}[/tex] - Reference sound intensity, measured in watts per square meter.
[tex]I[/tex] - Real sound intensity, measured in watts per square meter.
If we know that [tex]B_{dB} = 42\,dB[/tex] and [tex]I_{o} = 10^{-12}\,\frac{W}{m^{2}}[/tex], then the real sound intensity of the first sound is:
[tex]\frac{B_{dB}}{10} = \log_{10}\left(\frac{I}{I_{o}} \right)[/tex]
[tex]\frac{I}{I_{o}} = 10^{\frac{B_{dB}}{10} }[/tex]
[tex]I = I_{o}\cdot 10^{\frac{B_{dB}}{10} }[/tex]
[tex]I = \left(10^{-12}\,\frac{W}{m^{2}} \right)\cdot 10^{\frac{42\,dB}{10} }[/tex]
[tex]I = 1.585\times 10^{-8}\,\frac{W}{m^{2}}[/tex]
The real sound intensity of the second sound is four times greater, that is:
[tex]I' = 6.340\times 10^{-8}\,\frac{W}{m^{2}}[/tex]
If we know that [tex]I_{o} = 10^{-12}\,\frac{W}{m^{2}}[/tex] and [tex]I' = 6.340\times 10^{-8}\,\frac{W}{m^{2}}[/tex], then the acoustic intensity of the second sound is:
[tex]B_{dB} = 10\cdot \log_{10}\left(\frac{I'}{I_{o}} \right)[/tex]
[tex]B_{dB} = 10\cdot \log_{10}\left(\frac{6.340\times 10^{-8}\,\frac{W}{m^{2}} }{10^{-12}\,\frac{W}{m^{2}} } \right)[/tex]
[tex]B_{dB} = 48.021\,dB[/tex]
The decibel level of this second sound is 48.021 decibels.
A box contains 84 chocolates which 63 are dark chocolates. The rest are milk chocolates.what is the ratio of milk chocolates to the number of chocolates in the box
Answer:
21:84
Step-by-step explanation:
Answer:
Step-by-step explanation:
We have a box with 84 chocolates
63 are dark, milk=84-63=21
21/63=1/3 is the ratio
for each 1 milk chocolate we have 3 dark chocolates
Mrs. Taylor made 67 tissue holders each day. She decided to sell her tissue holders and sold out each day for four weeks. How many tissue holders did she sell?
A. 1,876 tissue holders
B. 1,866 tissue holders
C. 1,407 tissue holders
D. 670 tissue holders
Answer:
the answer would be A
Step-by-step explanation:
Answer:
A. 1,876 tissue holders
Step-by-step explanation:
Nelson did 44 push-ups in 4 minutes.
What is the unit rate?
Answer:
5
Step-by-step explanation:
good luck
what is 15% of 80?????
Answer:
I think it´s 12
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
because 15% (or 0.15) times 80 equals 12.
what is 7 - x - ( -5x ) - 10 + 4x
Answer: 8x−3
Step-by-step explanation:
Let's simplify step-by-step.
7−x−−5x−10+4x
=7+−x+5x+−10+4x
Combine Like Terms:
=7+−x+5x+−10+4x
=(−x+5x+4x)+(7+−10)
=8x+−3
If I Helped, Please Mark Me As Brainliest, Have A Great Day :D
Answer:
8 x -3
Step-by-step explanation:
because you do the equation on math w a y
The amount of money in a bank account increased by 21.5% over the last year. If
the amount of money at the beginning of the year is represented by n, which
expression represents the amount of money in the bank account after the
increase?step by step
Answer:
n + 0.215n
Step-by-step explanation:
Please answer really important
Answer:
3x16+8x8
Step-by-step explanation:
3 lots of 16
+
8 lots of 8
Answer:
I know that 1 and 3 are correct.
Step-by-step explanation:
3x16+8x8
There are 8 childrens tickets, which each cost 8 dollars so you multiply those.
There are three adult tickets, which each cost 16 dollars so you multiply those and then you add the two products together.
3x16+8²
8 squared is just 8x8.
There are three adult tickets, which each cost 16 dollars so you multiply those and then you add the two products together.
Solve the following equations
7(3x + 5) - x = 75
Answer:
x = 2
Step-by-step explanation:
7(3x + 5) - x = 75
1. Distributive property
multiply 7 by whatever is in the parenthesis
7*3x + 7*5 - x = 75
21x + 35 - x = 75
2. Combine like terms
21x - x = 20x
20x + 35 = 75
3. Subtract 35 on both sides
20x + 35 - 35 = 75 - 35
20x = 40
4. Divide both sides by 20 since u want to isolate the variable
20x/20 = 40/20
x = 2
And thats ur answer
Hope this helped!
What is the domain of f/g, given f(x)= x+6 and g(x) = x-5?
Answer:
(-infinity, infinity)
Step-by-step explanation:
[tex]2x^{2} + 3 = 5[/tex]
Could someone please walk me through this equation?
Answer:
x = 1
Step-by-step explanation:
2x^2 + 3 = 52x^2 = 5 - 32x^2 = 2x^2 = 2/2 x = \| 1 x = 1Select the correct choice below and fill in the answer box(es) to complete your choice.
(Type a whole number.)
A. 789÷67=
B. 789÷67=? R ?
In The answer B the reason why i put an R is because they might ask for a remainder. And plz take ur time on this i'm in no rush and plz try on this don't just be here for points hope you have an wonderful day and stay safe. <3
Answer:
11.7
Step-by-step explanation:
Answer:
What about the wink face?
Step-by-step explanation:
If 4 rocks fit in a box how many boxes would it take to hold 32 rocks
Answer:
8 boxes. 32÷4 = 8
Answer:
it would take 8 boxes
Step-by-step explanation:
thirty two divided by four is eight
branliest on this volume on a cube volume question
Which cube is a unit cube?
1. a cube that is 2 feet long, 2 feet tall, and 2 feet high
2. a cube that is 5 meters long, 5 meters wide, and 5 meters high
3. a cube that is 3 yards long, 3 yards wide, and 3 yards high
4. a cube that is 1 inch long, 1 inch wide, and 1 inch high
Answer:
4th one
Step-by-step explanation:
In geometry, a unit cube is a cube whose each side is 1 unit long.
Answer:
4TH ONE
Step-by-step explanation:
please help with this :(
Answer: -m^4
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
-1 x -1 x -1 = 1
9 Mia bought a sweater that was 30% off. She paid $48 for the sweater. What was the original price of the sweater? A $18.24 B $29.76 CS68.57 D $62.40
Answer:
D$62.40
Step-by-step explanation:
first start calculating how much the price is 30% then you add to the price she paid..then you get the original price of the sweater
What’s the missing number?
Step-by-step explanation:
Notice that:
1st column = (5 - 1)² = 16
2nd column = (11 - 4)² = 49
Therefore 3rd column = (18 - *)² = 121, * = 7.
Answer:
7 is the missing number
Step-by-step explanation:
Let the missing number be x.
Lets study the pattern of the numbers. In each column , we find that the bottom number is the square of the difference of first 2 numbers.
In 1st column ,
Difference of first 2 numbers = 5 - 1 = 4
The bottom number = 16 = 4²
In 2nd column ,
Difference of first 2 numbers = 11 - 4 = 7
The bottom number = 49 = 7²
Similarly ,
Difference of first 2 numbers = 18 - x
The bottom number = 121
[tex] = > {(18 - x)}^{2} = 121[/tex]
[tex] = > {(18 - x)}^{2} = {11}^{2} [/tex]
[tex] = > 18 - x = 11[/tex]
[tex] = > x = 18 - 11 = 7[/tex]
Students in Mr. Hill’s class were asked how many TV shows they watched last weekend. The results are shown on the line plot. A line plot titled Amount of T V Watched. A number line goes from 0 to 7 and represents the number of T V Shows. There are 4 marks above 0, 2 marks above 1, 4 marks above 2, 3 marks above 3, 1 mark above 4, 2 marks above 5, 1 mark above 6, 3 marks above 7. Which statement about the number of TV shows watched is accurate? Half of the students watched fewer than two TV shows. More than half of the students watched three or more TV shows. Fewer than one-quarter of the students watched five or more TV shows. Half of the students watched fewer than two shows or more than five shows.
Answer:
i think it is b
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Plz mark brainliest
Hello! Please answer this question with all of the info it is asked for. Please be sure to include all of your work and share any of your thoughts you had when solving. Please do not answer unless you know the answer. Thanks! Good Luck!
3) A diver springs up off of a diving board at an initial velocity of 24 ft/sec. The diving board is 30 feet above the water. The function that models the diver's height is: h(t) = -16t^2 + 24t + 30.
a) Find how long it takes for the diver to reach maximum height. Why can't we double this time to find how long the diver is in the air before hitting the water?
b) Determine the maximum height of the diver.
c) How far is the diver from the water after 2 seconds?
Answer:
a) 3/4 secb) 39 feetc) 14 feetStep-by-step explanation:
Given function:
h(t) = -16t^2 + 24t + 30a) Maximum height is the vertex of the graph. Time needed:
t = -24/2(-16) = 24/32 = 3/4 secIf we double this time then diver will pass the peak point and it doesn't double the height
b) Maximum height is at vertex:
h(3/4) = -16*(3/4)^2 + 24*3/4 + 30 = 39 feetc) Distance from water after 2 seconds:
h(2) = -16*2^2 + 24*2 + 30 = 14 feetSomebody please tell me how to solve this-
Answer:
64ft
Step-by-step explanation:
a+b/2xh
17+9=16
16/2=8
8x8=64ft
for Every 3 people at the concert singing along. there are 5 people not singing along. if there are 180 more people not singing along. how many total people are at the concert
Answer:
288
Step-by-step explanation:
First Divide 180/5=36. So then do 3 times 36=108. (108=People Singing, 180=People not singing). So add 108+180 to get 288.
The total number of people who attend the concert is 288.
Given that, for every 3 people at the concert singing along, there are 5 people not singing along.
What is the ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Ratio of the number of people singing along at the concert to the number of people not singing along
= 3:5
Now, 3+5=8
The number of more people not singing along = 180
Let the total number of people be x
So, 5/8 × x=180
⇒ x=(180×8)/5
⇒ x=36×8
⇒ x=288
Therefore, the total number of people who attend the concert is 288.
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Hello! Please answer this question with all of the info it is asked for. Please be sure to include all of your work and share any of your thoughts you had when solving. Please do not answer unless you know the answer. Thanks! Good Luck!
A golf ball is launched straight up into the air from the ground with an initial velocity of 160 ft/s. The function that models the ball's height is: h(t) = -16t^2 + 160t.
a) Find how long it takes for the golf ball to reached its maximum height.
b) Determine how long the golf ball is in the air before it hits the ground.
c) Determine the maximum height that the golf ball reaches.
Answer:
a) 5 secb) 10 secc) 400 mStep-by-step explanation:
Given is the quadratic function:
h(t) = -16t^2 + 160tThis gets maximum value at vertex, which is achieved at:
x = -b/2a, of y = ax^2 + bx + cIn our case:
t = -160/2(-16) = 5 secondsMaximum height is at vertex:
h(5) = -16*5^2 + 160*5 = 400 mTime the ball hits the ground, h(t) = 0:
-16t^2 + 160t = 0t^2 - 10t = 0t(t - 10) = 0t = 0 seconds is the starting pointt = 10 seconds is when the ball hits the ground