Answer:
w=-50
(negative fifty)
Step-by-step explanation:
simplify the following
[tex]( \frac{1}{a} - \frac{1}{b}) {}^{ - 1} [/tex]
Answer:
Step-by-step explanation:
[tex]\frac{1}{a}-\frac{1}{b} =\frac{1*b}{a*b}-\frac{1*a}{b*a}\\\\=\frac{b}{ab}-\frac{a}{ab}\\\\=\frac{b-a}{ab}\\\\\\(\frac{1}{a}-\frac{1}{b})^{-1} = (\frac{b-a}{ab})*{-1}\\\\=\frac{ab}{b-a}[/tex]
What is the length of a kite string that is 6 meters above and 9 meters away from where it is being held? Round to the nearest tenth.
Answer:
10.8 meters
Step-by-step explanation:
This situation forms a right triangle, where the length of the kite string is the hypotenuse, the distance from where it is held is the long leg, and the height is the short leg.
Use the pythagorean theorem to solve for c, the length of the kite string.
a² + b² = c²
6² + 9² = c²
36 + 81 = c²
117 = c²
10.8 = c
So, the length of the kite string is 10.8 meters
PLS HELP!!! 7TH GRADE MATH
Answer:
The first picture is 72 ft²
Step-by-step explanation:
Answer for 1:
242
Answer for 2:
214.57
Answer for 3:
88.79
Explanation:
I used Goggle
Solve for k 9k^3=1125
9k³ = 1125
k³ = 1125 : 9
k³ = 125
k = 5 (because 5³ = 5 * 5 * 5 = 125)
Simplify the fraction to lowest terms, and enter your answer below as a
fraction, using the slash mark ( 7 ) as the fraction bar.
4
12
Answer:
1/3
Step-by-step explanation:
Ellie wanted to build a fence around her rectangular garden. The garden is 10 ft by 20 ft. A) What is the perimeter of the garden in feet?
Answer:
60 feet
Step-by-step explanation:
Perimeter is the sum of the four sides of a rectangle
the formula for the perimeter of a rectangle = 2 x (length + breadth)
2 x (10 + 20)
2 x (30)
= 60 feet
Alternatively, you can add the sides together : 10 + 10 + 20 + 20 = 60 feet
What is the vertex of the following quadratic equation?
y = 7(x + 5)2 + 4
A. (5,4)
B. (-4,5)
C.(-5, 4)
D. (7,-4)
Answer:
C.(-5, 4)
Step-by-step explanation:
The vertex form of a parabola of this type is:
y = a ( x − h ) 2 + k [1]
where ( h , k ) is the vertex.
Explanation:
Given:
y = 7 ( x + 5 )² + 4 [2]
We can convert equation [2] into the same form as equation [1] by writing
+5 as − − 5 :
y = 7 ( x − − 5) ² + 4 [3]
We observe that the vertex is
( − 5 , 4 )
hope it will help :)
Equação do primeiro grau.
-10 + x = -8
Answer:
2
Step-by-step explanation:
Find the measures of the numbered angles in the quadrilateral.
Answer:
c
Step-by-step explanation:
angles in a triangle r equal to 180
180-90-65 is equal to 25
and 1 is 90 degree
Simplify using properties of operations and then factor the expressions using the GCF. (2g + 2) - (-4g - 7)
Answer:
3(2g + 3)
Step-by-step explanation:
We start out with the expression (2g + 2) - (-4g - 7).
Firstly, let's distribute the negative:
(2g + 2) - (-4g - 7)
2g + 2 + 4g + 7
Now, combine like terms:
2g + 4g + 7 + 2
6g + 9
The GCF stands for "Greatest Common Factor." In this case, we have to find the GCF between 6 and 9. What is the GCF of 6 and 9? It would be 3. So,
6g + 9
3(2g + 3)
Find the slope y-intercept of each line. Write the equation of the line please help
Answer:
6) Slope: -2, Y-Intercept: 4
7) Slope: 5/4, Y-Intercept: -4
Step-by-step explanation:
DeShawn has 3.5 bottles of water. Each full bottle holds 8.25 fluid ounces. DeShawn wants to know how many fluid ounces of water he has in all. NEED HELP
Answer: 27.625 fl oz
Step-by-step explanation:
8.25*3.5= 27.625 fl oz
PLEASE HELP ILL GIVE BRAINLIEST
PLEAZE SHOW WORK
Answer:
A
Step-by-step explanation:
divide it
45/.7
PLEASEEEE SOMEONE HELP ME WITH THIS ITS DUE IN A COUPLE HOURS!!!!! FOR trigonometry
Answer:
I believe that you are missing the...
Hypotenuse and Adjacent
Hypotenuse: x ≈ 29.79 units
Adjacent: x ≈ 38.89 units
Step-by-step explanation:
So sorry if it's wrong
PLEASE HELP ITS MATH ASSAP
chose the correct rule for the following .
90° counter clock wise
x,y
-x,-y
-y,x
-y,-x
Answer:-y,x
Step-by-step explanation: It is rotateing into the negative part of a graph if you think about it.
what is 20-10x10-50 I am typing this bc i have to reach 20 characters lol
Answer:
-130
Step-by-step explanation:
Answer: 30
Step-by-step explanation:
Order of operations, multiplication first, then subtraction and addition
i have no idea where to plot the points
Answer:
1/4 is slope\
Step-by-step explanation:
Find the average value fave of the function f on the given interval. f() = 5 sec2(/6), 0, 3 2
Answer:
[tex]f_{ave}[/tex] = [tex]{\frac{10 }{3\pi }[/tex]
Step-by-step explanation:
To find - Find the average value fave of the function f on the given interval. f(x) = 5 sec²(x/6), [0, 3[tex]\pi[/tex]/2]
Proof -
We know that,
Average value of f in the interval [a, b] is -
[tex]f_{ave}[/tex] = [tex]\frac{1}{b - a}\int\limits^b_a {f(x)} \, dx[/tex]
Now,
Here a = 0, b = [tex]\frac{3\pi }{2}[/tex], f(x) = [tex]5sec^{2}(\frac{x}{6} )[/tex]
Now,
[tex]f_{ave}[/tex] = [tex]\frac{1}{\frac{3\pi }{2} - 0}\int\limits^{\frac{3\pi }{2} }_0 {5sec^2 ({\frac{x}{6} }) } \, dx[/tex]
= [tex]{\frac{2 }{3\pi }}\int\limits^{\frac{3\pi }{2} }_0 {5sec^2 ({\frac{x}{6} }) } \, dx[/tex]
= [tex]{\frac{10 }{3\pi }}\int\limits^{\frac{3\pi }{2} }_0 {sec^2 ({\frac{x}{6} }) } \, dx[/tex]
= [tex]{\frac{10 }{3\pi }}[\ {tan({\frac{x}{6} }) }|^{\frac{3\pi }{2} }_0 \, ][/tex]
= [tex]{\frac{10 }{3\pi }}[\ {tan({\frac{x}{6} }) - tan({0) } \, ][/tex]
= [tex]{\frac{10 }{3\pi }}[ {1 - 0 } ][/tex]
= [tex]{\frac{10 }{3\pi }[/tex]
⇒[tex]f_{ave}[/tex] = [tex]{\frac{10 }{3\pi }[/tex]
Sabrina has a rectangular swimming pool in her backyard. She fills it with water to the depth of 4 feet. The water in the pool has a volume of 1600 cubic feet. What are the possible dimensions of the swimming pool with the given depth? Select ALL that apply. WHAT IS THE ANSWER????? PRETTY PLS AND THANK YOU
Answer: [tex]20\times 20, 16\times 25, 10\times 40[/tex]
Step-by-step explanation:
Given
The volume of the pool is [tex]1600\ ft^3[/tex]
Depth of water is [tex]d=4\ ft[/tex]
Suppose A is the base of the pool
[tex]\Rightarrow V=A\times d\\\Rightarrow 1600=A\times 4\\\Rightarrow A=400\ ft^2[/tex]
This area can be written as
[tex]\Rightarrow A=10\ ft\times 40\ ft\ or\\\Rightarrow A=16\ ft\times 25\ ft\ or\\\Rightarrow A=20\ ft\times 20\ ft[/tex]
At work, Mr. Grinnell receives 20 phone calls every 60 minutes. How many calls should he expect to receive in 180 minutes?
60
80
100
40
Answer:
Use a ratio.
20/60 = x/180
180/60 = 3, so 20*3 is 60.
The answer is 60.
Answer:
60
Step-by-step explanation:
Find out how many phone calls Mr. Grinnell receives in 1 minute.
60 mins = 20
1 min = 20 ÷ 60 = 0.333
180 mins = 0.333 x 180 = 59.94
59.94 rounded to the nearest whole number = 60
A highway sign shows a speed limit of 60 miles per hour. Which of the following car speed measurements represent the same level of accuracy compared to the speed limit sign? Check all that apply. A. 64 mph B. 56 mph O C. 48 mph O D. 68 mph
Answer:
B and C
Step-by-step explanation:
IT is found that B. 56 mph and C. 48 mph car speed measurements represent the same level of accuracy compared to the speed limit sign.
What is speed?Speed can be calculated as the ratio of distance traveled to the time taken
We can see that As the speed limit on the highway is 60 miles per hour and the speeds mentioned above are below the speed limit.
The legal top speed at which a vehicle may travel on a specific section of road is determined by speed limits for road traffic, since they are utilized in the most of countries.
On a traffic sign, it is known that the maximum allowed speed is typically displayed and expressed in kilometers per hour (km/h) or miles per hour (mph).
Learn more about speed limit here:
brainly.com/question/10492698
#SPJ2
1. Camilla won $150 in a drawing contest. She spent 5/8 art supplies. How much money does she have left?
A $56.25
B $68.75
C $93.75
D $131.25
2. Kelly paid a one-time membership fee of $56.80 when joining a gym, and since then she has been paying $22.70 per month. So far she has paid the gym $374.60. For how many months has Kelly been a member of the gym?
3. The 20 students in Ms. Wilson's art class made a project with construction paper. Nine students used red construction paper, 5 students used green construction paper, and the rest of the students used blue construction paper. If Ms. Wilson chooses one project at random, what is the probability that it Will be blue?
4. The battery on Sarah's old cömputer can last for 3 3/4 hours. She bought a new computer that has a battery that can last 20% longer. How long can the battery on Sarah's new computer last?
5.Kendra needs to buy a window shade to cover a window in her living room. She measured the width of the window shade as 68 inches. The actual measurement is 72 inches. What is Kendra's percent error? Round your answer to the nearest tenth.
6. Kyle bought a sofa for d dollars and paid an 8% sales tax. Write two different expressions that represent the total number of dollars, including tax, that Kyle spent, and show or explain why the expressions are equivalent.
7. Michael and Nadia are on their school(s swim team. They each swam 5 laps and recorded their lap times in seconds.
Michael's Lap Times (seconds) 42, 43, 45, 4.7, 48
Nadia's Lap Times (seconds) 36, 37, 46, 50, 51
Who has the greater mean absolute deviation, and by how much? Show or explain how you know.
Answer:
#1
150*(1 - 5/8) = 150(3/8) = 56.25Option A#2
56.80 + 22.70x = 374.6022.7x = 374.60 - 56.8022.7x = 317.8x = 317.8/22.7x = 14 months#3
Blue = 20 - (9 + 5) = 6p(blue) = 6/20 = 0.3 or 30%#4
3 3/4 + 20% of 3 3/4 =3 3/4*1.2 = 15/4 * 12/10 =9/2 = 4.5 hr#5
Actual value = 72 in, expected value = 68 in
Error = 72 - 68 = 4 inPercent error = error/ expected value * 100% = 4/68*100% = 5.9% (rounded)#6
d + 8% = d + 0.08d = 1.08dd*1.08 = 1.08d#7
Michael
Data = 42, 43, 45, 4.7, 48Mean = (42+ 43+ 45+ 47+ 48) / 5 = 45Absolute deviation = (|42 - 45| + |43 - 45| + |45 - 45| + |47 -45| + |48 - 45|)/5 = 2Nadia
Data = 36, 37, 46, 50, 51Mean = (36+ 37+ 46+ 50+ 51)/5 = 44Absolute deviation = (|36 - 44| + |37 - 44| + |46 - 44|+ |50 -44| + |51 - 44|)/5= 6Nadia had greater mean absolute deviation: 6 - 2 = 4 (seconds)
I don't get what to do with this!
Answer:
76+76=152
Step-by-step explanation:
12. Divide 2.4 ; 2= 14 1 1
Answer:
5
Step-by-step explanation:
if 1/4 gallon of paint covers 1/3 of a wall in luna’s bedroom, how much paint does she need to cover 1 wall?
Answer:
3/4
Step-by-step explanation:
SOMEONE PLEASE HELP ME ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT!!!!
Answer:
A
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
1. P(E)>P(D) (Event E is more likely to occur, therefore it has a greater probability)
2. P(E)>0.5 (The probability of event D is given as 0.5, so rewrite P(D) in the inequality)
3. 0.5 is equal to 0.5 and 0.1 is less than 0.5, so you can rule out options A and D
4. This leaves us with options 1.5 and 0.9, but it is impossible to have a probability that is greater than equal to one, so you can immediately rule out B
5. After this elimination process, the only remaining answer is C) P(E)=0.9
What is the correct answer?
Answer:
F
Step-by-step explanation:
what is the solution to the inequality
There are 136 students at the dance. 62 of the students are females. What is the ratio of boys to girls at the dance? PLEASE HURRY!!!
The ratio of boys to girls is 74:62
74 represents the boys
62 represents the girls
34
Sandwiches
Tuna
Here are the types of sandwiches sold in a cafe last week.
56 tuna sandwiches were sold.
This was 40% of the total number of sandwiches sold.
Work out the total number of sandwiches sold.