Answer:
y = - 4x - 6
Step-by-step explanation:
Leo wants to determine the average number of texts middle school students send in a day. Since all middle school
students are enrolled in history, he randamly surveyed 4 'students from each of Mr. Barnes's eighth-grade history
classes. Ms. Lopez and Mrs. Frank also teach eighth-grade history. What should Leo do to ensure his sample is
representative of all middle school students?
O He should take the sample as is because he randomly surveyed students in each of Mr. Barnes's classes.
He should also take a sample from Ms. Lopez's and Mrs. Frank's classes so that each student has the same
chance of being chosen.
O He should also take a sample from each of the other history classes in all of the other grades in the middle school.
O He should survey al the students in all the history classes to make sure he collects enough data.
Mark this and return
Save and Exit
Next
Submit
Answer:
3rd Choice
Step-by-step explanation:
He is looking to collect a sample representing middle school students, not just 8th grade students. He needs to get all the data from all the middle school students.
rewrite in a simpler equivalent form and solve
Given:
The equation is
[tex]\dfrac{3x}{7}+\dfrac{2}{7}=2[/tex]
To find:
The simpler equivalent form and solve the given equation.
Solution:
We have,
[tex]\dfrac{3x}{7}+\dfrac{2}{7}=2[/tex]
It can be written as
[tex]\dfrac{3x+2}{7}=2[/tex]
Multiply both sides by 7.
[tex]3x+2=14[/tex]
[tex]3x=14-2[/tex]
[tex]3x=12[/tex]
Divide both sides by 3.
[tex]x=\dfrac{12}{3}[/tex]
[tex]x=4[/tex]
Therefore, the simpler equivalent form of the given equation is [tex]3x+2=14[/tex] and the solution is x=4.
What is a slope in mathematical terms
Answer:
"The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x)."
Answer:
It is how steep a linear graph/function is.
Step-by-step explanation:
It is the m in the formula y=mx+b. The bigger the member the steeper.
Which of the following regular polygons circumscribed about a circle provides the best estimate for the area of that circle?
Dodecagon
decagon
nonagon
octagon
3 cups of tea and 4 cups of coffee costs £3.45 in total.
4 cups of tea and 1 cup of coffee costs £2.65 in total.
How much would it costs to buy one cup of each in total?
Answer:
A) 3T + 4C = 3.45
B) 4T + 1C = 2.65 We'll multiply this by -4
B) -16T -4C = -10.60 then we'll add A)
A) 3T + 4C = 3.45
-13T = -7.15
Tea is .55
and coffee is
A) 3 * .55 + 4C = 3.45
4C = 3.45 -(3 * .55)
4C = 1.80
coffee is .45
Step-by-step explanation:
True or false
The graph of a linear equation is always horizontal line ?
Answer:
truef8y8y8gufu0fy9f8tft8
Answer:
true
Step-by-step explanation:
totoo po yn hindi ko po layo niloloko
HELP ME ASAP PLZZ
Which table represents the function y = 3x – 1?
Input x 1 2 3
Output y 4 7 10
Input x 0 1 2
Output y -1 -2 -3
Input x 0 1 2
Output y -1 2 5
Input x 2 3 4
Output y 2 4 6
Answer:
Input x 0 1 2
Output y -1 2 5
Step-by-step explanation:
just plug in all the answers for x and solve the equation. like this:
y=3*0-1=
y=0-1=
y= -1
---------------------
y=3*1-1=
y=3-1=
y=2
--------------------------
y=3*2-1=
y=6-1=
y=5
------------------------
all the results match with the table
hope I helped God bless you
please help me with this question fast!!!!
The rectangle is 16 inches by 25 inches. If the scale is 4 in :5 ft what is the length and width of the rectangle in feet.
Answer:
The length and width of the rectangle are 20 feet and 31.25 feet, respectively.
Step-by-step explanation:
Let the scale be [tex]4\,in\,:\,5\,ft[/tex] and the dimensions of the rectangle being 4 inches and 5 inches, respectively. The scale ([tex]r[/tex]), measured in inches per feet, is equivalent to the following rational number:
[tex]r = \frac{4\,in}{5\,ft}[/tex]
We can convert each length by dividing it by scale factor. That is:
Length
[tex]l' = \frac{16\,in}{\frac{4\,in}{5\,ft} }[/tex]
[tex]l' = 20\,ft[/tex]
Width
[tex]w' = \frac{25\,in}{\frac{4\,in}{5\,ft} }[/tex]
[tex]w' = 31.25\,ft[/tex]
The length and width of the rectangle are 20 feet and 31.25 feet, respectively.
Ed has 30 sweets. The ratio of red sweets to yellow sweets is 2:3 How
many red sweets does Ed have?
Answer:
The ratio of red sweets to yellow sweets is 12.
Step-by-step explanation:
let the number of red sweet = 2x
number of yellow sweet = 3x
according to question:
red sweets + yellow sweets = total sweet
2x +3x = 30
5x = 30
x = 30/5 = 6
red sweet = 2x = 2× 6 = 12
yellow sweet = 3x = 3× 6 = 18
plz mark my answer as brainlist plzzzz if you find it useful.
hope this will be helpful to you.
PLEASE ANSWER I NEED HELP ASAP
The table shows the running speeds of 10 randomly
selected ostriches.
Speed (miles per hour)
35 40 37 33 36 34 32 36 41 36
Based on the data, select the most reasonable prediction about the speed of
ostriches.
A. The typical ostrich runs at speeds greater than 40 miles per hour.
B. The top speed of an ostrich is 40 miles per hour.
C. The typical ostrich runs at a speed of about 30 miles per hour.
O D. The typical ostrich runs at a speed of about 36 miles per hour.
Answer:
D 36MPH
Step-by-step explanation:
What value of y makes this true?
25 - y = 15
a. 10
b. 8
c. 11
d. 9
Answer:
A. 10
Step-by-step explanation:
y = 10
Im the best mathmatician at my whole college so you can trust me
Determine whether the expression is a polynomial. If it is a polynomial, find the degree
and determine whether it is a monomial, binomial, or trinomial.
2x^-3-4x+1
Answer:
hello again !
this isn't classified as a polynomial because polynomials do not contain variables raised to a negative number, such as this, which is raised to -3.
CAN SOMEONE HELP ME PLS I GIBE BRAINLIST AND POINTS
Answer:
184.26
Step-by-step explanation:
28.275 + 60 + 96 = 184.26
If you spend $400 on a new phone and it is depreciating about 50% per year , how much will it be worth by its third year?
Answer:
50$
Step-by-step explanation:
after 1 year: 200
after 2 years 100
after 3 years 50
Answer:
It will be worth $50 dollars after 3 years
I hate math so much Help
Answer:
73/100 is the fraction
0.73 is the decimal
Step-by-step explanation:
Which of the following statements are true?
I. 4x2 – 2x + 9 is a cubic binomial with a leading coefficient of 4.
II. -3y4 – 2y + 4 is a quartic trinomial with a degree of -3.
III. 5a+ 2 is a quintic binomial with a constant term of 2.
IV. -2m2 is a quadratic monomial with a leading coefficient of 2.
A None
B II only
C II and IV only
D I, II, III, and IV
Answer:
16
Step-by-step explanation:
Rich bought 5 cupcakes and one pie. He knows his total bill is $13.14 and knows the pie was
$6.89. How much is the cost of one cupcake?
$6.25
Take the total and subtract the amount of money from the pies to get the amount for cupcakes
A house rental costs $150 per night. The rental company
also charges a one-time fee for cleaning. A family stayed
at the rental for four nights and were charged $650. Which linear equation below represents the overall cost of the house rental?
Which is the solution to the inequality? 1/4 + x < 5/6
Answer:
x<7/12
Step-by-step explanation:
1/4+x<5/6
24×1/4+24(x)<24×5/6
6+24x<20
24x<20-6
24x<14
24x/24<14/24
x<7/12
solve 3-²
I need work shown
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\text{Equation: }\bold{3^{-2}}[/tex]
[tex]\large\text{Lets convert }\bold{3^{-2}}\large\text{ into }\bold{3^2}\large\text{ temporarily...}[/tex]
[tex]\large\text{Equation:} \bold{\dfrac{1}{3^2}}\\\\\bold{= \dfrac{1}{3\times3}}\\\\\bold{3\times3\rightarrow9\leftarrow\ solving\ for\ your\ DENOMINATOR\ (bottom\ number)}\\\\\bold{= \dfrac{1}{9}}\\\\\boxed{\boxed{\large\text{Answer: }\bold{\dfrac{1}{9}}}}\huge\checkmark[/tex]
[tex]\textsf{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
The deck that Amos is building is in the shape of a parallelogram, DGRY. The measure of
Complete Question:
The deck that Amos is building is in the shape of a parallelogram, DGRY. The measure of D is five-halves the measure of Y. Find the measure of each angle of the deck.
Answer:
[tex]\angle G = \angle Y = 51.43 ^{\circ}[/tex]
[tex]\angle D = \angle R = 128.57 ^{\circ}[/tex]
Step-by-step explanation:
Given
Shape: Parallelogram DGRY
Dimension: [tex]\angle D = \frac{5}{2}\angle Y[/tex]
Required
Find the measure of each angle
D and R are opposite sides & G and Y are also opposite sides.
So, we have:
[tex]\angle D = \angle R = \frac{5}{2}\angle Y[/tex]
and
[tex]\angle G = \angle Y[/tex]
The sum of angles is given as:
[tex]\angle D + \angle G + \angle R + \angle Y=360^{\circ}[/tex]
Substitute values for [tex]\angle D, \angle G \ \& \angle R[/tex]
[tex]\frac{5}{2}\angle Y + \frac{5}{2}\angle Y + \angle Y + \angle Y = 360^{\circ}[/tex]
Take LCM
[tex]\frac{5\angle Y + 5\angle Y + 2\angle Y+ 2\angle Y}{2}= 360^{\circ}[/tex]
[tex]\frac{14\angle Y}{2}= 360^{\circ}[/tex]
Multiply both sides by [tex]\frac{2}{14}[/tex]
[tex]\frac{2}{14} * \frac{14\angle Y}{2}= 360^{\circ} * \frac{2}{14}[/tex]
[tex]\angle Y= 360^{\circ} * \frac{2}{14}[/tex]
[tex]\angle Y= \frac{ 360^{\circ} *2}{14}[/tex]
[tex]\angle Y= \frac{720^{\circ}}{14}[/tex]
[tex]\angle Y= 51.43 ^{\circ}[/tex]
So:
[tex]\angle G = \angle Y = 51.43 ^{\circ}[/tex]
[tex]\angle D = \frac{5}{2}\angle Y[/tex]
[tex]\angle D = \frac{5}{2} * 51.43^{\circ}[/tex]
[tex]\angle D = \frac{5* 51.43^{\circ}}{2}[/tex]
[tex]\angle D = \frac{257.15^{\circ}}{2}[/tex]
[tex]\angle D = 128.57 ^{\circ}[/tex]
Hence:
[tex]\angle D = \angle R = 128.57 ^{\circ}[/tex]
Can somebody plz heLp answer number 7-8 thanks!!!
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :DDD
Answer:
7. x - 16 = 5
x = 21
8. x ÷ 2 = 8
x = 16
good luck, i hope this helps :)
help me ill give Brainly if u do lolzzzzzzz
Answer:
4
Step-by-step explanation:
-1 0 1 2 3
1 2 3 4
A whole pizza is cut into 8 pieces and you eat 2 of the 1/8 pieces, how much (in a fraction) is left over? 3/8
4/6
2/8
6/8
Answer:
6/8 is left
Step-by-step explanation:
Hope this helps!! Can I get brainliest please??? :)
8 pieces = 8/8
8/8 - 1/8 - 1/8 = 6/8
or
8/8 - 2/8 = 6/8
Help!!!!! Also shoe the work plz!
Answer:
[tex]h=\frac{15.625}{pi}[/tex]
h ~ 4.974
Step-by-step explanation:
The formula for the volume of a cylinder is;
[tex](pi)(r^{2})(h)=V[/tex]
Where [tex](pi)[/tex] represents the value, [tex]3.1415...[/tex]
[tex](r)[/tex] represents the radius of the given cylinder. In other words, if one were to take a base (the flat side in the case of the cylinder) of the figure. The distance from the center to a point on the outside of the circle is the radius.
[tex](h)[/tex] represents the height of the object. In other words the distance between the two bases of the cylinder.
[tex]V[/tex] represents the volume, in other words, the space that the object takes up.
In this problem, one is given the diameter of the cylinder and the volume. One is asked to find the area.
The diameter of a circle is the distance between two opposite sides of the circle. The diameter will always pass through the center of the circle. To find the radius when given the diameter, one will divide by 2.
To solve this problem, one will substitute in the given information and solve for the height using inverse operations.
[tex](pi)(r^{2})(h)=V\\\\(pi)((\frac{8}{2})^{2})(h)=250\\\\(pi)(16)(h)=250\\\\(pi)(h)=15.625\\\\(h) = \frac{15.625}{pi}\\\\h- approx. 4.974[/tex]
6 = 2 (y + 2) what is the value of the y
Answer:
Step-by-step explanation:
6=2(y+2)
6=2y+4
2=2y
y=1
Answer:
1
Step-by-step explanation:
1+2=3
2(3)= 2x3=6
There ya go
There are 63 color pencils of which 14 are black, 21 are white and the remaining are yellow.
What fraction of the pencils are yellow in color? Simplify your answer.
Answer:
4/9
Step-by-step explanation:
HELP PLS PLS PLS PLS
Answer:
7x - x
Step-by-step explanation:
i think so oof oof oof oof oof
Parallel/perpendicular definition
Answer:
Parallel: extending in the same direction, everywhere equidistant.
Perpendicular: ar an angle of 90 to a givin line, plane or surface.
Answer:
Two or more straight lines having equal distance between them through out is parallel lines
Perpendicular lines are two lines at Right angles