Answer:
Shawn is correct
Step-by-step explanation:
Shawn is correct:
10*x + 30*x = x*(10+30) = x*40 = 40xIn a city with three high schools, all the ninth graders took a Standardized Test, with these results:High Scool Mean Score test Number of ninth gradeGlenwood 79 285Central city 94 336Lincoln High 72 191The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 81.7 . Of course, that is incorrect. What is the mean score for all ninth graders in the city? USE EXCEL. Round your answer to one decimal place.
Answer: 83.56
Step-by-step explanation:
To calculate the mean score for all ninth graders in the city, we multiply the mean score test for each school by the number of months grade students and then add all together and divide by the total ninth grade students. This is solved below.
Mean = [(79 × 285) + (94 × 336) + (72 × 191)]/285+336+191
= (22515+31584+13752)/812
= 67851/812
= 83.56
What is the five number summary for this data set?
11,12,16,16,17,22,24,29,33,38
Assume the number in each answer choice are listed in this order . Min Q1, median, Q3 max.
Answer:
11, 15, 19.5, 29, 38
Step-by-step explanation:
Minimum: 11
Quartile Q1: 15
Median: 19.5
Quartile Q3: 29
Maximum: 38
Riley is training to run in a 5-kilometer road race. She would like to
reduce her race time by 15 seconds each month that she trains.
The race is in 3 months. What is the total change in time that Riley
hopes to achieve?
1. What integer represents the change in race time Riley wants to
achieve each month?
2. What integer represents the number of months she will train?
3. Write a multiplication expression that can be used to find the total
change in time.
4. Complete the number line to find the product.
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Objective is to compete in a 5km road race ;
Reduction in race tone per month = 15 seconds
Rqce comes up in 3 months
Total change in race time he hopes to achieve :
1. What integer represents the change in race time Riley wants to achieve each month ; 15 seconds
2. What integer represents the number of months she will train?
She will train for 3 months ; 3 months
Write a multiplication expression that can be used to find the total change in time.
Change in race time * number of month she will train
15 seconds * 3 months = 45 seconds
Let initial race time = (t)
t - 15(month in which race comes up).
t - (15-3) = t - 45
PLEASE HELP ASAP, ANSWER CORRECT TO GET BRAINLIEST, 50 POINTS
Below is a typical Geometric Two-Column Proof that you will be able to complete by the end of your Geometry course. But right now you only have a few postulates and theorems in your Geometry toolbox. Using what you already know about the Vertical Angles Theorem, fill in Step 3 of this proof.
A. ∠A≅∠D
B. ∠AMB≅∠DMC
C. ∠ABM≅∠DCM
D. ∠C≅∠B
Answer:
the answer is B.
Step-by-step explanation:
since the M is the middle point of the angles AB and DC.
we just add the M in the middle.
also i did the test and got it right, soooo im 100% sure its B
This is about understanding vertical angles theorem.
Option B is Correct
Vertical angles theorem is an angle theorem that states that when two lines intersect each other, the two opposite vertical angles formed will always be congruent i.e equal to each other.Looking at the image, we can see that the two lines that intersect each other are Line AD and Line BC.
The two opposite angles they form are; ∠AMB and ∠DMC.
Now, from the vertical angles theorem quoted above, we can say that;∠AMB is congruent to ∠DMC.
The congruency symbol is ≅.
Thus; ∠AMB ≅ ∠DMC.
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suppose you have d dollars. after you pay your sister the $5 dollars you owe her, you have $18 left. how much money did you have?
Answer:
$23
Step-by-step explanation:
Step 1: form an equation
d = 18 + 5
Step 2: solve
d = 23
Step 1: y minus (negative 2) = three-fourths (x minus 3). Step 2: y + 2 = three-fourths x minus StartFraction 9 Over 4 EndFraction. Step 3: y + 2 + 2 = three-fourths x minus StartFraction 9 Over 4 EndFraction + StartFraction 8 Over 4 EndFraction. Step 4: y = three-fourths x minus one-fourth. A student used the point-slope form to write the equation of a line that has a slope of Three-fourths and passes through the point (3, –2). The student’s work is shown to the left. Examine the steps to determine whether the student made an error. The student made .
Answer:
C m > -49
Step-by-step explanation:
This was the correct answer for me
Answer:
c
Step-by-step explanation:
0.00000018 in scientific notation
Answer:
[tex] 1.8 \times {10}^{ - 7} [/tex]
Step-by-step explanation:
[tex]0.00000018 = 1.8 \times {10}^{ - 7} \\ [/tex]
The density of silver (Ag) is 10.5 g/cm3. Find the mass of Ag that occupies 965 cm3 of space.
Answer:
The answer is 10132.5 gStep-by-step explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume of silver = 965 cm³
density = 10.5 g/cm³
The mass of silver is
mass = 965 × 10.5
We have the final answer as
10132.5 gHope this helps you
What is 10 times as much as 7
Answer:
0.7
Step-by-step explanation:
hi i can’t figure this out can anyone help will give brainly
Pls need help with this assignment due soon
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
6a)
[tex]62+67=129\\m<1=129[/tex]
6b)
[tex]180-152= 28\\28+115=143\\180-143=37\\m<1=37[/tex]
Answer:
Step-by-step explanation:
6a. inside the triangle:
x + 62 + 67 = 180
x + 129 = 180
x = 51
For <1: m<1 + 51 = 180
m<1 = 129
6b. for next to the exterior:
x + 152 = 180
x = 28
Inside the triangle:
m<1 = m<1 + 28 + 115 = 180
m<1 + 143 = 180
m<1 = 37
Writing about Solvin
Explain how to solve the equation
b-7 = 12
Answer:
Step-by-step explanation:
add 7 to the 12 on the right which is 19
b=19
Answer:
19
Step-by-step explanation:
b-7=12
+7 +7
______
b=19
9:45 on Tuesday Questions
Please Help Me Out! I am back with a handful of geometry questions. I would like you to answer this question and explain or show all of your work.
I will mark Brainlest for an accurate answer!
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Answer:
x = 124°y = 88°z = 92°Step-by-step explanation:
find:
1) x
2) y
3) z
solve for x:
1) opposite angle are equal.
x = 124°
solve for y:
2) inside angle of a triangle = 180
180 = 53 + 39 + y
180 - 53 - 39 = y
y = 88°
solve for z:
3) z + y = 180
substitute y = 88
z + 88 = 180
z = 180 - 88
z = 92°
What is 5 7/10 times -5/9
[tex]\tt{Hey~there![/tex]
[tex]\tt{5\frac{7}{10}\times\frac{-5}{9}[/tex]
[tex]\tt{Multiply:[/tex]
[tex]\tt{5\frac{7}{10}\times\frac{-5}{9}=\frac{-19}{6}[/tex]
[tex]\tt{Now~simplify~-19/6:[/tex]
[tex]\tt{\frac{-19}{6} =-3\frac{1}{6}[/tex]
[tex]\boxed{\tt{-3\frac{1}{6}}}[/tex]
[tex]\tt{Hope~this~helps![/tex]
[tex]\boxed{\tt{-TestedHyperr}}[/tex]
Answer:
57/18 or 3 1/6
Step-by-step explanation:
Step 1:
5 7/10 × - 5/9 Equation
Step 2:
57/10 × - 5/9 Change to Improper Fraction
Answer:
57/18 or 3 1/6
Hope This Helps :)
solve A = 1/2bh for b
Answer:
[tex]\displaystyle b=\frac{2A}{h}[/tex]
Step-by-step explanation:
Solving an equation
To solve en equation for a given variable, the general method is to isolate the variable by performing inverse operations.
Let's focus on the equation:
[tex]\displaystyle A=\frac{1}{2}bh[/tex]
First, let's flip both sides of the equation:
[tex]\displaystyle \frac{1}{2}bh=A[/tex]
Multiply both sides by 2 since it's dividing the required variable:
[tex]\displaystyle \not 2\cdot \frac{1}{\not 2}bh=2*A[/tex]
Simplifying
[tex]bh=2A[/tex]
Dividing by h:
[tex]\displaystyle \frac{b\not h}{\not h}=\frac{2A}{h}[/tex]
Simplifying:
[tex]\boxed{\displaystyle b=\frac{2A}{h}}[/tex]
I need help ASAP I will give brainlist!
Answer:
First answer choice
Step-by-step explanation:
Bob has less than 5 cats.
Therefore he does not have more cats.
With this information you a, b, c, and f.
And since he also can't have an equal amount of cats, that gives you a, and f.
But it can't be less than or equal to stated earlier.
Therefore you get answer choice a!
Select the correct choices to complete the sentence. Three drivers competed in the same fifteen drag races. The mean and standard deviation for the race times of each of the drivers are given. Driver A had a mean race time of 4.01 seconds and a standard deviation of 0.05 seconds. Driver B had a mean race time of 3.96 seconds and a standard deviation of 0.12 seconds. Driver C had a mean race time of 3.99 seconds and a standard deviation of 0.19 seconds. a. Which driver had the fastest typical race time?
Answer:
Driver B has the fastest race timeStep-by-step explanation:
From the options presented, driver B has the fastest typical race time because he recorded the smallest time taken to complete an individual race.
Also from the standard deviation given (3.96) for driver B, it shows that the individual time spread from the standard deviation is minimal and that the driver maintained a fairly consistent time of race throughout the racing period.
35 flower and 7 vase she want to put the same number in each vase
Answer:5 in each
Step-by-step explanation:
35/7=5
Answer: 5 flowers in each vase.
Step-by-step explanation: We want to divvy up 35 flowers equally into each vase, so we divide 35 by 7 to get 5 flowers for each vase. (35/7=5)
Hope this helps! :)
how do you write this in number form two hundred fifty-four thousand, three hundred fourteen
Answer:
254,314
You’re welcome(:
Evaluate the following expression when m=4.n=3, and p = -2 (2m+2)/2p
Answer: The answer would be 4
Step-by-step explanation:
Subsitute the variables with the number given so in This case it would be
(2(4)+2^3)/-2(-2)
Use orders of Operations
Solve parenthesis first.
8+8/-2(-2)
16/4
Divide
4
I am confusion
Solve: -3x = 15 *
Answer:
x = -5
Step-by-step explanation:
First, divide -3 on both sides.
Then you will get x = -5
f(x)=4x+7 Place the steps for finding f -1(x) in the correct order.
y=4x+7
X=4y+7
X-7=4y
X-7/4=y
F-1(x)=x-7/4
The inverse of the function is y = (x-7)/4 , the steps are correctly ordered.
What is an Inverse Function?An Inverse function is found when the variables x and y are interchanged in the f(x,y) function and then the equation is solved for y.
The function is
f(x)= 4x+7
y = 4x+7-------- Step 7
y-7 = 4x--------Step 2
x = 4y +7------ Step 3
x - 7 = 4y------- Step 6
(x-7)/4 = y------- Step 4
f⁻¹ (x) = (x-7)/4------- Step 5
Steps 1 and 8 are not part of finding Inverse of the function.
Therefore, the inverse of the function is y = (x-7)/4 , the steps are correctly ordered.
To know more about Inverse Function
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Help, please
22=4x+6
Answer: x = 4
Step-by-step explanation: 4x + 6 = 4 × ( x - 4), 4 = 0, x - 4 = 0, add 4 to each sides of the equation: x = 4
n × 9 = 0 true? please i will give 25 points?
Answer:
This can be true if n=0
Step-by-step explanation:
9n = 0
Divide each side by 9
9n/9 = 0/9
n=0
This can be true if n=0
What does the left side of the equal sign simplify to?
2(x+1)-4=5x+1
A. x - 1
B. 2x - 2
(Please help fast)
Answer:
A
Step-by-step explanation:
Need help with this problem!! Point X is the midpoint of HI. What is the coordinate of the point X?
Answer:
1
Step-by-step explanation:
The midpoint is the average of the points H and I
midpoint = | [tex]\frac{-2+4}{2}[/tex] | = | [tex]\frac{2}{2}[/tex] | = | 1 | = 1
WHOEVER ANWSERS THIS GETS 5 BUCKS PLZZZZZZZZ
(36y^6 x^2 – 7y^6 x^5) /(-4y^3 x^4)
Answer:
7(xy)^3-36y^3/4x^2
A scuba diver is cleaning debris off the ocean floor. It takes approximately 1.5 minutes to approach and collect each item. The diver plans on picking up 150 items. If each oxygen tank lasts for approximately 1.25 hours, how many tanks does the diver need?
3
3.125
3.75
75
225
3
Step-by-step explanation:
1.5x150=225
225÷75(1.25 hrs in minutes)=3
What is the slope of the line that passes through (3, −7) and (−1, 1)? (1 point)
Answer:
The slope of the line is -2
Step-by-step explanation:
The rule of the slope of a line is:
[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex] , where
[tex](x_{1},y_{1})[/tex] and [tex](x_{2},y_{2})[/tex] are two points on the line
Let us find the slope using the rule above
∵ The line passes through points (3, -7) and (-1 , 1)
∴ [tex]x_{1}[/tex] = 3 and [tex]x_{2}[/tex] = -1
∴ [tex]y_{1}[/tex] = -7 and [tex]y_{2}[/tex] = 1
Substitute these values in the rule above to find m
∴ [tex]m=\frac{1--7}{-1-3}=\frac{1+7}{-4}=\frac{8}{-4}=-2[/tex]
∴ The slope of the line that passes through the given points is -2