Answer:
x = 30/7
Step-by-step explanation:
2/3x = − 1/2x + 5
multiply by 6 to clear the fractions
4x = -3x + 30
add 3x to both sides
7x = 30
Divide both sides by 7
x = 30/7
The graph compares the scores earned by 100 students on a pre-test and a post-test.
Two box and whisker plots showing Pre-Test and Post-Test scores on a number line from 0 to 100. The upper plot represents the pre-test scores. For this upper plot, the minimum number is 0, the maximum number is 78, the right side of the box is 60, the left side of the box is 16, and the bar in the box is at 30. The lower plot represents the post-test scores. For this lower plot, the minimum number is 4, the maximum number is 100, the right side of the box is 83, the left side of the box is 30, and the bar in the box is at 45.
About how many more students scored greater than 30% on the post-test than on the pre-test?
15
Answer:
25 more studentsStep-by-step explanation:
30% mark represents:
50% on pre-test and 25% on post test.So
50% of 100 = 50 students scored greater than 30%75% of 100 = 75 students scored greater than 30%.The difference is:
75 - 50 = 25 studentsAnswer:
25 students
Step-by-step explanation:
A bag contain four black B) and
three R balls. The ball drawn from
the bag, without replacement. Find the
Proberbility of drawing the balls in
the Order B,R B,R B,R and B
Answer:
6912 / 823,543 or approximately 0.8%
Step-by-step explanation:
4 black
3 red
7 total
P(B) = 4/7
P(R) = 3/7
4/7 x 3/7 x 4/7 x 3/7 x 4/7 x 3/7 x 4/7 = 6912 / 823,543
if the pressure is 50 Pa and the mass of the object is 50 kg ,what is the surface area of the object?
Answer:
9.81m^2
Step-by-step explanation:
Given data
Pressure P= 50Pa
Mass M= 50kg
Weight= Mg= 50*9.81= 490.5N
Hence Force= 490.5N
We know that Pressure= Force/Area
Substitute
50= 490.5/Area
Area= 490.5/50
Area= 9.81 m^2
Hence the area is 9.81m^2
Find the measure of /_2.
45°
120°
30°
90°
Answer:
45°
as triangle is right angled and inside a quater of a square it is isosceles
so both 2 and 3 are 45°
Factor x2−6x+8 (x+2)(x+6) (x−4)(x−2) (x−5)(x−3) (x+4)(x−4)
Answer:
(x-4) (x-2)
Step-by-step explanation:
x^2−6x+8
What 2 numbers multiply to 8 and add to -6
-4*-2 = -8
-4+-2 = -6
(x-4) (x-2)
Find the missing side
Answer:
Use Mathpapa to find using formula:
55^2+19^2=c^2
Step-by-step explanation:
I can't straightforward give you answers; it'll ruin your chances of going to university! Hopefully you learned the concept.
Context: You and your friends go to the state fair. It costs $6 to get into the fair and $2 each time you go on a ride. Where do you see the y-intercept in the table and in the equation?
Answer:
see below
Step-by-step explanation:
The y intercept is when x =0
The equation is y =2x+6
The equation is in the form y = mx+b. It is the constant added to the equation.
In the table it is the y value when x =0
2x-1+3x=0 5x-1=0 how can we get equation b from a
Rewrite one side (or both) by combining like terms.
What is equation?It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
2x – 1 + 3x = 0..........(A)
5x – 1 = 0................(B)
To get Equation B from A, we would rewrite one side (or both) by combining like terms
2x – 1 + 3x = 0
5x – 1 = 0
Learn more about equation here:
brainly.com/question/10413253
#SPJ7
The fuel for a chain saw is a mix of oil and gasoline. The label says to mix 5 ounces of oil with 11 gallons of gasoline. How much oil would you use if you had 22 gallons of gasoline?
Answer: 10 ounces
Step-by-step explanation:
Given
The label says to mix 5 ounces of oil with 11 gallons of gasoline
for 22 gallons of gasoline that is, double the previous amount, oil required would also be doubled.
Oil required would be 10 ounce.
Ranking brainliest if correct !!!
Answer:
Step-by-step explanation:
help appreciated !!!!
Answer:
Step-by-step explanation:
The circle is divided into 5 sections. The probability that the needle lands on a particular color is equally likely.
So,
[tex]P(red) = \frac{1}{5}\\\\P(green) = \frac{1}{5}\\\\[/tex]
Probability of not blue = 1 - Probability of blue
[tex]= 1 - P(blue)\\\\=1 - \frac{1}{5}\\\\= \frac{4}{5}[/tex]
PLS HELP!!!!!!!ASAP PLS
Answer:
I think its c or D
Step-by-step explanation:
If its wrong im sorry
the graph of x =-2 is a line parallel to the
Answer:
If we know that the equation of the line [tex]x = -2[/tex] is parallel to the y-axis.
Step-by-step explanation:
The equation of a line parallel to the y-axis is of the form [tex]x = a[/tex], where [tex]a[/tex] is the x-coordinate of the point of the line passing through the x-axis. Then, if we know that the equation of the line [tex]x = -2[/tex] is parallel to the y-axis.
What is 4-3 written in expanded form?
Answer:
four minus three
Step-by-step explanation:
your welcome
Guys This is one of the most difficult question .
I salute the person who answer it correctly
The question goes like this :
The present price of a Camera is $32400. After day to day use, its price depriciates !! in such a way that its price will be $0 in 12 years ,, Then calculate the ptice of the Camera after 4 years.
Answer:
$21,600
Step-by-step explanation:
32400÷12=2700
2700×4=10,800
32400-10800=21600
Answer: $21,600
Step-by-step explanation: 32400÷12=2700
2700×4=10,80032400-10800=21600please help w the question in the pic, thanksss!
Step-by-step explanation:
everything can be found in the picture
. -5, 10, 7, 10, 9, 0, 1, 9, -1, 5 Work out the mean.
Answer:
6
Step-by-step explanation: because its online
Solve for x in the triangle. Round answer to the nearest tenth.
Answer:
6.3
Step-by-step explanation:
[tex]sin(\alpha)= \frac{O}{H}[/tex]
[tex]sin(44)=\frac{O}{9} \\O=9sin(44) \\O=6.25\\O=6.3[/tex]
Answer:
9.3
Step-by-step explanation:
9/ tg44 = 9.31677018634
Rounded by the nearest tenth= 9.3
Out of 113 students, it was found that 18 drink neither tea nor coffee, 67 drink tea and 37 drink coffee.Find:
i) How many students drink coffee only?
ii) How many students like tea only?
Also show in the Venn diagram?
Answer:
Step-by-step explanation:
Anybody know the answer ?
Answer:
its a
Step-by-step explanation:
I If the game with 3 hits is considered to be recorded in error, it might be removed from the data set. If that happens a. What happens to the mean of the data set? b. What happens to the median of the data set? plot data- 2(0) 3(1) 4(0) 5(0) 6(0) 7(2) 8(4) 9(5) 10(4) 11(4) 12(0) 13(0) .please help
Answer:
If the game with 3 hits is ignored the data becomes:
7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11a) The mean will increase.
With 3:
(3 + 7*2 + 8*4 + 9*5 + 10*4 + 11*4)/20 = 8.9Without 3:
(7*2 + 8*4 + 9*5 + 10*4 + 11*4)/19 = 9.21b) The median will remain as is.
With 3 and without the median is same = 9heyy need help seriously and someone better help dont answer for points and or putting a site or ill report you
Answer:
5. add all of those numbers and watch for like term which are h's. honestly im giving you how to do the problems, but you need to solve it.
6. multiply a rectangle and then the other rectangle and then find like terms and add them up.
if you need any help just comment, see you and hope you understand this, if not comment.
What is the product?
Answer:
-30a⁵b + 12a⁴b² + 16a³b² - 4a²b⁴ - 2ab³
Step-by-step explanation:
( - 6a³b + 2ab²)( 5a² - 2ab² b)
multiply the second parantheses by each term from the first parantheses.
-6a³b×(5a²- 2ab²b -b)+2ab×(5a² -2ab²b-b)
-6a³b× (5a² - 2ab² b) +2ab × (5a² - 2ab² b)
-30 a⁵b + 12a⁴b² + 6a³b²+ 10a³b² - 4a²b⁴ - 2ab
combine like terms
-30a⁵b + 12a⁴b² + 16a³b² - 4a²b⁴ - 2ab³
PLS HELP I KEEP GETTING SPAMMED PLEASEE
EXPLANATION = BRAINLIEST
the area of the triangle is ____ square in
Answer:
A = 56 Sq.in
Step-by-step explanation:
A = H x B/2
A = 8 x 14
= 112/2
= 56
THank you!!
The lenten on a map states that 1 inch is 40 miles. If you measure 5 inches on the map, how many miles would the actual distance be?
===============================================
Work Shown:
(1 inch)/(40 miles) = (5 inches)/(x miles)
1/40 = 5/x
1*x = 40*5 .... cross multiply
x = 200 miles
------------
We could also look at it like this:
1 inch = 40 miles
5*(1 inch) = 5*(40 miles) .... multiply both sides by 5
5 inches = 200 miles
A pipeline is to be run to a resort community which is on an island 16 kilometres from the closest point on the shoreline. The water source for the pipe is 30 kilometres down the shore. If it costs $500/km to lay pipe through water and $300/km to lay pipe on land, at what point on the shoreline should the pipe turn into the water to minimize cost? What is the total cost?
Answer:
hi pero love youkiss youStep-by-step explanation:
helli
I need this ASAP. Thanks
Answer:
-6
Step-by-step explanation:
since x = - 5 is < 3
for x < 3,
f(x) = 3x + 9
placing the value of x as - 5
f(x) = 3× (-5) + 9
= -15 + 9
= - 6The sum of a number and its square is 12 . Find the number
Answer:
Two solutions
3
-4
Step-by-step explanation:
3 + 3²
3 + 9 = 12
-------------------
-4 + (-4)²
-4 + 16 = 12
find the value of x
7
17
x*
Answer:
the awnser is 24
a) Al triple de un número le restamos 9 y se obtiene 30, ¿cuál es ese número?