Answer: a = 10
Step-by-step explanation:
3/5 = a + 5/25
Multiply both sides by 25 to get rid of it:
3/5 * 25 = 25(a + 5) /25
15 = a + 5
a = 15 - 5
a = 10
What percentage of the food cost is the tip?
Scott likes to run long distances. He can run 20 \text{ km}20 km20, start text, space, k, m, end text in 858585 minutes. He wants to know how many minutes (m)(m)left parenthesis, m, right parenthesis it will take him to run 52 \text{ km}52 km52, start text, space, k, m, end text at the same pace.
How long will it take Scott to run 52 \text{ km}52 km52, start text, space, k, m, end text?
minutes
Answer:
Scott will take 221 minutes to run 52 km
Step-by-step explanation:
Speed
The speed of an object can be calculated with the formula:
[tex]\displaystyle v=\frac{d}{t}[/tex]
Where d is the distance traveled and t is the time taken.
Scott can run d=20 km in 85 minutes. Thus, his speed is:
[tex]\displaystyle v=\frac{20}{85}\ km/min[/tex]
Now he wants to know how many minutes it will take him to run d=52 km. Solving the formula for t:
[tex]\displaystyle t=\frac{d}{v}[/tex]
Since the speed has been already determined:
[tex]\displaystyle t=\frac{52}{\frac{20}{85}}[/tex]
Multiplying by the reciprocal of the denominator:
[tex]\displaystyle t=52*\frac{85}{20}[/tex]
t = 221 min
Scott will take 221 minutes to run 52 km
Answer:
221 min
Step-by-step explanation:
eligible on khan academy
Rate me also give advice
No i am not growing out my hair it looks worse
My skin we clear in next few months currently taking Accutane
Contacts are not a option
.
Answer:
You look very nice!
Step-by-step explanation:
it matters what you look like to yourself not how you look to others!
3) The mean of a set of data is 4.68 and its standard deviation is 2.83. Find the z score for a value of 9.38.
Answer:
1.66
Step-by-step explanation:
The mean of a set of data is 4.68 and its standard deviation is 2.83. Find the z score for a value of 9.38
Given that :
Mean (m) = 4.68
Standard deviation (s) = 2.83
Value of x = 9.38
Zscore = (x - mean) / standard deviation
Zscore = (9.38 - 4.68) / 2.83
Zscore = 4.7 / 2.83
Zscore = 1.6607773
Hence, Zscore for a value of 9.38 is 1.66
(2x-40)° = (x+10)° solve for x
Answer:
X = 50
Step-by-step explanation:
2x-x = 40 + 10
X =50
Take the x to be on the same sides and the normal numbers in the other side. Then work them out.
HELP ASAP also the I couldn't fkfit the whole thing so that other part of the triangle is a O
Answer:
6/3 or 2?
Step-by-step explanation:
i am not completely sure though. I went purely based off of MN/RS, which gave me the ratio 6/3. That also equals 2.
Y/9 + 5 = 0 ???????????
Answer:
[tex]y=-45[/tex]
Step-by-step explanation:
[tex]\frac{y}{9}+5=0[/tex]
[tex]\frac{y}{9}=-5[/tex]
[tex]y=-45[/tex]
What numerical coefficient of b on the right side of the equation makes the expressions equivalent? -3(-5b + 6) b-2
Answer:
-5
Step-by-step explanation:
coefficient of b is -5
- World population in 2014 was estimated to have been 89614160,express it into billions
Answer:
Im a little confused what this question is asking, but the number in billions is simply 89.61416 if the original number is in thousands! Hope that helps and if that was not what you were looking for, let me know. :)
Step-by-step explanation:
Answer:
It is estimated that the population of the world reached one billion for the first time in 1804. It was another 123 years before it reached two billion in 1927, but it took only 33 years to rise by another billion people, reaching three billion in 1960.
I WILL MARK BRAINLEST!!! FOR YOU CAN ANSWER THESE TWO
Answer:
First question: 1.4
Second question: Option 3
Step-by-step explanation:
First question:
You simplify the left equation first,
-0.4 x -3.5 = 1.4 , -0.4 x 2.9 = -1.16
1.4k - 1.16
For this to equal the right equation, the number missing must be 1.4.
Second question:
You simplify the equation given to you first,
1/4 x 8 = 2 , 1/4 x 12 = 3
2x + 3
The option that is equivalent to the answer is option 3; 2x + 3
Ava, Cara, Emma, Lily, and Mia are to be seated together in a row. If Emma and Lily must sit next to each other, how many different ways can the five girls be seated
Answer:
48 ways
Step-by-step explanation:
Given
[tex]Girls = \{Ava, Cara, Emma, Lily, Mia\}[/tex]
[tex]Together= \{Emma, Lily\}[/tex]
Required
Determine the number of sitting arrangements
The number of girls are 5, of which 2 must be seated together.
First, Emma and Lily can be arranged in 2! ways
Next, we consider Emma and Lily as one, so there are (5 - 1) girls left to be arranged.
This can be done in (5 - 1)! ways
Total number of ways is then calculated as:
[tex]Ways = 2! * (5 - 1)![/tex]
[tex]Ways = 2! * 4![/tex]
[tex]Ways = 2 * 1 * 4 * 3 *2 * 1[/tex]
[tex]Ways = 48[/tex]
Hence, there are 48 ways
The possible ways in which Ava, Cara, Emma, Lily, and Mia are to be seated together in a row, while Emma and Lily sit next to each other are 48 ways.
Given to us;
Number of girls = {Ava, Cara, Emma, Lily, and Mia} = 5 girls,
Also, Emma and Lily must sit next to each other, therefore, considering them as a single person,
The choices we are left with = {Ava, Cara, Mia, (Emma, Lily)} = 4 person;
We know to calculate the number of ways people can sit is given by n! (n factorial), where n is the number of person. Thus,
different ways this 4 person can sit = n!
= 4!
= 4 x 3 x 2 x 1
= 24 ways
Further, as given in the question Emma and Lilly must sit together but they can change sits within themselves, So,
different ways Emma and Lilly can sit = n!
= 2!
= 2 x 1
= 2 ways
Therefore, the total number of ways all 5 girls can sit together in which Emma and Lilly will be always seated together,
Total ways all can sit together = 24 x 2
= 48 ways
Hence, the possible ways in which Ava, Cara, Emma, Lily, and Mia are to be seated together in a row, while Emma and Lily sit next to each other are 48 ways.
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Learning Task No. 3: Solve the following equation. Then compare
your answer by writing <, > and = in your notebook.
1.5 + 8 - 2 - 7
26 = 13 x 10 - 17
2. 22 x 3 - 42 + 20
72 - 2 + 13 - 16
3. 12 + 13 - 4 x 5
16 - 4 x 3 - 7
4. 45 - 10 x 2 + 17
16; 8 x 9-5 + 30
Answer:
(1) <
(2) <
(3) =
(4) <
Step-by-step explanation:
[tex]By \ applying \ the \ rule \ of \ BODMAS \ (i.e. \ Bracket, \ of, \ Division,\ Multiplication, \ Addition,[/tex][tex]\ and \ Subtraction).[/tex]
(1)
5 + 8 - 2 -7 = 13 × 10 - 17
13 - 9 = 130 - 17
4 < 113
(2)
22 × 3 - 42 + 20 = 72 -2 + 13 - 16
66 - 22 = 72 + 11 - 16
44 < 67
(3)
12 + 13 - 4 × 5 = 4 × 3 - 7
12 + 13 - 20 = 12 - 7
5 = 5
(4)
45 - 10 × 2 + 17 = 8 ×9 - 5 + 30
45 - 20 + 17 = 72 + 25
42 < 97
explanation pleasee!
Step-by-step explanation:
Triangles ABC and DEF are congruent.
The letter B is the 2nd letter in 'ABC'.
Likewise, the letter E is the 2nd letter in 'DEF'.
Therefore Angle B = Angle E.
any gymnast or cheerleader
Answer:
Cheerleader :))
Step-by-step explanation:
please help i have 1 hour to complete this
Answer:
for the first one its C,D and E
but for the second one i dont
know so sorry
Step-by-step explanation:
PLEASE I NEED HELP WITH MATH HW WITH EXPLANATION!!!
Question: Find the value of the varible
===================================================
Explanation:
For any triangle, the interior angles always add to 180
(angle1)+(angle2)+(angle3) = 180
(w) + (4w-6) + (w) = 180
(w+4w+w) - 6 = 180
6w - 6 = 180
6w - 6+6 = 180+6 .... adding 6 to both sides
6w = 186
6w/6 = 186/6 ..... divide both sides by 6
w = 31
------------------------------------
Extra info:
This value of w leads to
4w-6 = 4*31-6 = 118
The three angles of the triangle are: 31, 118, 31
Because we have two congruent angles, this means the triangle is isosceles. The sides opposite the congruent angles are the same length.
= 3x + 4, what is y when x is 1, 2, and 3
Answer:
when x is 1 y is 7
when x is 2 y is 10
when x is 3 y is 13
Step-by-step explanation:
Arectangle on a coordinate plane is translated 5 units up and 3 units to the left. Which rule describes the translation?
x. y) x+5, y-3)
Oxy)- + 5.y + 3)
(K.)- K-3.y + 5)
(.)-(3.y+ 5)
Answer:
The first one x=5, y-3
Step-by-step explanation:
Water is flowing into a large spherical tank at a constant rate. Let V(t) be the volume of water in the tank and H(t) be the height of the water level at time t.
a) Give a physical interpretation of dV/dt and dH/dt.
b) Is dV/dt positive, negative, or zero when the tank is one-fourth full? Justify your answer.
c) Is dH/dt positive, negative, or zero when the tank is one-fourth full? Justify your answer.
Answer:
A) dV/dt = the rate of change of the given volume of water in the tank with respect to the time, t.
dH/dt = the rate of change of the height of the water in the tank with respect to the time
B) dV/dt is positive
C) dH/dt is positive
Step-by-step explanation:
We are given that;
V(t) is the volume of water in the tank and H(t) is the height of the water level at time t. Thus;
A) dV/dt = the rate of change of the given volume of water in the tank with respect to the time, t.
dH/dt = the rate of change of the height of the water in the tank with respect to the time
B) When the tank is one-fourth full, dV/dt is positive because the volume water in the tank is increasing with time.
C) when the tank is one-fourth full, dH/dt is positive because the height has increased from zero level to 0.25 times the height of the tank. Thus the height is increasing with time.
1 point
19. Write the equation for this line in slope-intercept form. (y=mx+b)*
Answer:
y=-4x+5...
Step-by-step explanation:
y=-4x+5...
there are 20 orange and purple pencils. the number of orange pencils is 1 less than 2 times the number of purple pencils. how many orange and purple pencils are their?
Answer:
im so srry 25 im not sure
Step-by-step explanation:
i need points :(
In Mona’s new video game she earns 30 points for each fish caught and 80 points for each octopus captured, but she loses 15 points every time she captures a crab. Which expression represents the total number of points Mona will earn if she catches x fish, y octopi, and z crabs?
95 (x + y minus z)
110 (x + y) minus 15 z
30 x + 80 y minus 15 z
30 + x + 80 + y minus 15 + z
Answer:
c. 30x+80y-15z.
Step-by-step explanation:
Answer:
CCCCCCCCCCCC
Step-by-step explanation:
In every right triangle there is exactly one ____.
Answer:
point
Step-by-step explanation:
Answer:
90 degree angle
Step-by-step explanation:
Use the drop-down menus to label the points on the number line.
Answer:
Step-by-Use the drop-down menus to label the points on the number line.
Point A is at . - 1 2/4
Point B is at . - 3/4
Point C is at 3/4.
Point D is at explanation:1 3/4
The position of the points A, B, C, and D on the number line will be –3/2, –3/4, 3/4, and 7/4.
What is coordinate geometry?Coordinate geometry is the study of geometry using the points in space.
The number line is shown below.
From the figure, we can observe that there are 4 sections between each successive numbers.
The point A is at –1 2/4 that is –3/2.
The point B is at –3/4.
Then the point C is at 3/4.
And the point D is at 1 3/4 that is 7/4.
More about the coordinate geometry link is given below.
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License plates are made using letters followed by digits. How many plates can be made if repetition of letters and digits is allowed
How many plates can be made if repetition of leters and digits is allowed? 26*26*10*10=67,600 plates can be made.
this is what i looked up and got sry if its not
PLZ RESPOND ASAP! 50 POINTS
classify which numbers are rational or irrational
The given numbers are:
5/4
√100
7.3
0.00247
√4/9
√2/24
0.01 with the line above the 1
Answer:
5/4 = rational √100 = rational 7.3 =rational 0.00247 = rational √4/9 = irrational √2/24 = irrational 0.01 (with the line) = irrational
Step-by-step explanation:
an irrational number is an infinitely repeating number that can not be written as a fraction, instead it must be written as a decimal. A rational number is a number that can be made by dividing two integers (an integer is a number with no fractional part).
The numbers are,
a. 5/4 = Rational
b. √100 = Rational
c. 7.3 = Rational
d. 0.00247 = Rational
e. √4/9 = Irrational
f. √2/24 = Irrational
g. 0.01 (with the line above the 1) = Irrational
What is Number system?
A system of writing to express the number is called number system.
Given that;
The numbers are,
5/4, √100 , 7.3 , 0.00247, √4/9 , √2/24 , 0.01 with the line above the 1.
Now,
Check the numbers as;
5/4 = 1.25
So, The number is a Rational number.
√100 = 10
So, The number is a Rational number.
7.3 = 7.3
So, The number is a Rational number.
0.00247 = 247/100000
So, The number is a Rational number.
√4/9 = 2/3 = 0.666.......
So, The number is a Irrational number.
√2/24
So, The number is a Irrational number.
0.01 with the line above the 1
So, The number is a Irrational number.
Thus, The numbers are,
a. 5/4 = Rational
b. √100 = Rational
c. 7.3 = Rational
d. 0.00247 = Rational
e. √4/9 = Rational
f. √2/24 = Irrational
g. 0.01 (with the line above the 1) = Irrational
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6/7 × 1/2 = ? Question 29 options: 37 127 27 314
I need help, also give explantion please
Answer:
[tex] \huge \: 8 {x}^{3} \times 3 {x}^{9} = 24 {x}^{12} [/tex]
can anyone help me thanks
Answer:
b
Step-by-step explanation:
dbhdkcnsbnadjfmmfejsdbfjkgkf
On holidays three friends decided to buy a Christmas tree for $96. They made a cash contribution of 3: 5: 8. The two friends who invested less decided to return the third friend's money so that their cash contributions became the same. What is the ratio of the money returned by the first person to the money returned by the second person?
Answer:
7 : 1Step-by-step explanation:
Total money = $96Contribution ratio = 3 : 5 : 8Contribution by each:
3x + 5x + 8x = 9616x = 96x = 63x → $18, 5x → $30, 8x → $48Equal contribution is:
$96/3= $32Returned by first and second person:
$32 - $18 = $14$32 - $30 = $2Ratio of returned amount:
14 : 2 = 7 : 1