Answer:
x=2
Step-by-step explanation:
-3x+7=1
subtract 7 from both sides: -3x+7-7=1-7
simplify: -3x=-6
divide both sides by -3: [tex]\frac{-3x}{-3}=\frac{-6}{-3}[/tex]
simplify: x=2
Answer:
x=8/-3 or 2.6
Step-by-step explanation:
You have to isolate the "x" so move the +7 to the other side of the equation and you get this:
-3x=1+7
Now you can simplify and add 7 plus 1 which is 8
the equation should looks like this now:
-3x=8
Then to have x by itself you divide -3 on both sides.
-3 divided by -3x just leaves the x there and -3 divided by 8 is just 8/-3 or in decimal form it's 2.6
-3x/-3= x
8/-3= 8/-3 or 2.6
x= 8/-3
I'm not really good at explaining but I hope it helped :/
Please help me with this The picture shows the question and anwsers
Answer:
D is the answer
hope this helps
have a good day :)
Step-by-step explanation:
At Mathville Middle School, there were 50 students and 50 lockers. Each year for Pi Day (March 14), the students lined up in alphabetical order and performed the following strange ritual. The first student opened every locker. The second student went to every second locker and closed it. The third student went to every third locker and changed it (i.e. if the locker was open, the student closed it; if the locker was closed, the student opened it). In a similar manner, the fourth, fifth, sixth, . . . student changed every fourth, fifth, sixth, . . . locker. After all 50 students had passed by the lockers, which lockers were left open?
HELP ASAP PLZZZ :C
Answer:
1,4,9,16,25,40,49. I am not sure, but if somebody else solves it and it matches with mine, then you will know that its correct.
8. Find the tolal surface area of the net below. 4 triangular and 1 rectangle
Help me pls!!!!
Which statement is not true about the data set shown? 66, 89, 90, 55, 92, 82 A.) The median ia 82 B.) The mean is 79 C.) The rante is 37 D.) There is no mode
Answer:
a
Step-by-step explanation:
Mode refers to a value that appears most frequently in a data set.
Range is the difference between the highest and lowest values of a set of observations
Range = highest value - lowest value
Mean is a measure of central tendency. It is the average of a set of numbers. It is determined by adding the numbers together and dividing it by the total number
Mean = sum of the numbers / total number
Median is the number that occurs in the middle of a set of observations
Arranging the numbers in ascending order : 55, 66, 82, 89, 90, 92
median = (82 + 89) / 2 = 85.5
There is no mode because the numbers only appear once
Range = 92 - 55 = 37
mean = 476/6 = 79
The top and bottom of the box are squares with sides of 4 in. Find the total area of the top and bottom.
Answer:
32in^2
Step-by-step explanation:
top= (4inx4in)= 16in2
bottom is the same as the top, add top and bottom 32in^2
A local charity holds a carnival to raise money. In one activity, participants make a $3 donation for a chance to spin a wheel that has 10 spaces marked with the values 0, 1, 2, 5, and 10. The participant wins the dollar amount marked on the space on which the wheel stops. Let X represent the value of a spin. The distribution of X is given in the table.
A 2-column table with 5 rows. Column 1 is labeled value of a spin with entries 0, 1, 2, 5, 10. Column 2 is labeled probability with entries 0.4, 0.2, 0.2, 0.1, 0.1.
What is the median of the distribution?
1
1.5
2
2.1
Answer:2
Step-by-step explanation:
The median of the probability distribution given in the table is 1.
Given that X, the value of a spin and the corresponding probability distribution.
X : 0 1 2 5 10
P(X) : 0.4 0.2 0.2 0.1 0.1
CF : 0.4 0.6 0.8 0.9 1
So the sum of the cumulative frequency = 1
We have to find the value where the half of the cumulative frequency lies in.
1/2 = 0.5
0.5 lies in between 0.4 and 0.6.
The value of the spin that corresponds to 0.6 is 1.
So the median of the distribution is 1.
Learn more about Median of the Distribution here :
https://brainly.com/question/11146087
#SPJ7
Write the coordinates of the point 2 units up of the point (-5,7)
Answer:
(-5,9)
Step-by-step explanation:
7 + 2 is 9 so yeah that's it
I need help solving this , help !
Answer:
NO
Step-by-step explanation:
Triangle A suggests that the triangle is isosceles.
Isosceles:
Triangle with two congruent angles and sides:
7 , 6 , 7
5 , 4 , 5
9, 12 , 9
Triangle B suggests that the triangle is scalene.
Scalene:
Triangle with no congruent angles or sides:
5 , 6 , 7
10 , 15 , 7
12 , 18 , 21
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Gustavo is the league's home run leader. The probabilities for his total number of home runs for the season are as follows:
First (0-19 home runs) Second (40+ home runs) Thrid (20-39 home runs)
What is the area of the shaded portion of the circle?
9514 1404 393
Answer:
(a) (5π -11.6) ft²
Step-by-step explanation:
The shaded area is the area of 1/5 of the circle less the area of the triangle with base 5.8 ft and height 4 ft.
shaded area = 1/5(π(5 ft)²) -(1/2)(5.8 ft)(4 ft)
shaded area = (5π -11.6) ft²
Can somebody who’s done probability before plz help answer these questions correctly thanks! :3 (also the P= probability)
WILL MARK BRAINLIEST WHOEVER CAN ANSWER THESE:DDDD
Answer:12) 3/10
13)2/10
14) 1/10
15) 3/10
16) 7/10
[tex]3x + (-2x) + 2 =[/tex]
Given v = u + 5t; Find v when u= -15 and t=4
v = u + 5t
v = -15 + 5(4)
v = -15 + 20
v = 5
Answer:
[tex]\huge\boxed{Answer\hookleftarrow}[/tex]
[tex]v = u + 5t[/tex]
Given,
[tex]u = - 15 \\ t = 4 \\ v = \: ?[/tex]
To find the value of v, we must substitute the values of u & t in the equation ⇻ v = u + 5t.
[tex]v = u + 5t \\ v = ( - 15) + 5(4) \\ v = - 15 + 20 \\ v = 5[/tex]
✐ The value of v is 5.
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐
What are the solutions to the system of equations graphed below?
Answer:
(0,-4) and (2,0)
Step-by-step explanation:
you cut off the screen shot, so not all answer options are visible.
but from the graph we can pretty reliably deduct, that the solutions (the crossing points of both functions) are
(0,-4) and (2,0)
Graded Assignment
Unit Test, Part 2: Expressions and Problem Solving
Answer the questions below. When you are finished, submit this assignment to your teacher by the due date for full credit.
Total score: ____ of 15 points
(Score for Question 1: ___ of 6 points)
1. Emmanuel bought 28 lb of potting soil this week. This amount is 4 lb more than twice the amount of potting soil he bought last week. Answer the following questions to find the number of pounds of soil Emmanuel purchased last week.
(a) What is the unknown information?
(b) Let p represent the unknown information. Write an equation to model the problem.
(c) Which number, 10, 11, or 12, will solve the equation in Part (b)? Show your work.
(d) How many pounds of potting soil did Emmanuel buy last week?
Answer:
plz help me I beg you
Answer:
1.) Amount of potting soil purchased last week.
2) 2p + 4 = 28
3.) 12 lbs
Step-by-step explanation:
1.) The unknown information is what we intend to find out using the information given, which is the amount of potting soil Emmanuel bought last week.
2.)
Let amount of potting soil bought last week = p
Amount bought this week = 2p + 4
Since amount bought this week = 28
Hence, we have ;
28 = 2p + 4
28 - 4 = 2p
24 = 2p
p = 24 / 2
p = 12
There is a square parking lot at the grocery store. The diagonal of the parking lot measures 8√2 ft. Find the perimeter of the parking lot.
Answer:
[tex]32\:\mathrm{feet}[/tex]
Step-by-step explanation:
The square forms two 45-45-90 triangles, where the diagonal of the square is the hypotenuse of both these triangles. In all 45-45-90 triangles, the sides are in the ratio [tex]x:x:x\sqrt{2}[/tex], where [tex]x\sqrt{2}[/tex] is the hypotenuse of the triangle and [tex]x[/tex] represents each of the two other sides of the triangle (from the Pythagorean Theorem).
Thus, we know that [tex]8\sqrt{2}[/tex] represents the hypotenuse, which means that the side length must be [tex]8[/tex] feet. The perimeter is then [tex]4\cdot 8=\boxed{32\:\mathrm{feet}}[/tex]
I need help with my math homework. it is due on Monday
Answer
sorry i dont know i wish i could help
write a cosine function that has a midline of 5 an amplitude of 2 and a period of 5/2
Answer:
Uuy
Step-by-step explanation:
in 24 games, Jamie has 48 scoring attempts. Which unit rate describes Jamie's scoring attempts?
Answer:
The answer is 2 scoring attempts per game.
Caitlyn’s family has a circular swimming pool. The circumference of the pool is 25.12m What is its area?
Answer:
A = 50.26 sq meters
Step-by-step explanation:
we have to find the diameter first by using the circumference:
C = πd
25.12 = πd
25.12/π = d
8 = d
this means the radius is 4
A = πr²
A = π4² or 16π
A = 50.26 sq meters
Solve the problem.
A teacher is going to assign each student a 3-digit code using the digits 0 through 4. How many codes are possible if no repetitions are allowed?
A.) 60
B.) 125
C.) 24
D.) 64
Answer:
24 codes are possible
Step-by-step explanation:
0 through 4 means we are to select from 0,1, 2 , and 4
That’s a total of 4
The first number has 4 choices, the second 3, the 3rd two and the last 1
The product of the choices are;
4 * 3 * 2 * 1 = 24 codes
Someone help me please!
Answer:
B
Step-by-step explanation:
Slope: -3/4
Y-intercept: 5
Answer:
B) since its a negative it will be going that directrion<
Step-by-step explanation:
highly recommend Desmos for these kind of problems
1. Lily spent 4 times as much as her sister Sue. If the girls spent $24, how much did each girl spend?
Answer:
Lily spent $19.20, Sue spent $4.80. Make sure to include the units.
Step by Step:
Lets say Sue is X
4x+x=24
5x=24
x=24/5
x=4.8
So sue spent 4.8.
24-4.8=19.2
Lily spent 19.2
Check: 4(4.8)=19.2
19.2+4.8=24
Trey uses 1/4 cup of lemonade for every 1/2 cup of strawberry juice to make strawberry lemonade. Enter the number of cups of lemonade trey uses for 1 cup of strawberry juice
Answer:
1/2
Step-by-step explanation:
1/4 : 1/2 = ? : 1
=> 1 : 2 = ? : 1
=> 1 : 2 = 1/2 : 1
Write at least three different expressions that are equivalent to
+(-12x + 30).
Answer:
1.) -12x + 30
2.) -(12x - 30)
3.) 3(-4x + 10)
Extra: -3(4x - 10)
What is the equation of the line
Answer:
y = -7
Step-by-step explanation:
The line represents the y-coordinate, because it is a straight line over the x axis, indicating it cant be an x coordinate
Because it is 7 units below the x-axis, it is -7
y = -7
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
In 2014, the population of China was 1.39 billion. Compare China’s 2014 population to the world population with a ratio. Write your answer as a fraction, and as a percent rounded to 1 decimal place
Fraction ?
percent?
Answer:
Percentage of china's population to world = 19.85 % (Approx.)
Step-by-step explanation:
Given:
Population of China shows in 2014 = 1.39 billion
Find:
Fraction of china's population to world
Percentage of china's population to world
Computation:
Approximately population of world = 7 billion
Fraction of china's population to world = 1.39 / 7
Percentage of china's population to world = [1.39 / 7]100
Percentage of china's population to world = [0.1985]100
Percentage of china's population to world = 19.85 % (Approx.)
What is the solution of 9 + k = 18
please help
Answer:
k = 9
Step-by-step explanation:
9 + k = 18
Subtract 9 from each side
9-9 + k = 18-9
k = 9
Answer:
k = 9
Step-by-step explanation:
Since 9 + 9 is 18 k = 9
PLEASE HELP ASAP
Question 15 Multiple Choice Worth 1 points)
(06.01 LC)
The volume of a pyramid that fits exactly inside a cube is 9 cubic feet. What is the volume of the cube?
3 cubic feet
6 cubic feet
18 cubic feet
27 cubic feet
Answer:
27 cubic feet
Step-by-step explanation:
A pyramid is always 1/3 of a cube when it has the same base as a pyramid.
ALSO, thats why the volume of a square pyramid has 1/3 in it.
So, if the volume of this pyramid is 9 cubic feet then:
9 x 3 = 27 cubic feet
Hope this helps!
How do I do this? (Will give brainliest) (explanation if you could)
Answer:
ummmmmmmmmm whats the question
have a good day :)
Step-by-step explanation: