Answer:
a
Step-by-step explanation:bbbbbbb
1) x + y = -15
2) 2y+ 8x = 1
3)-2x + y = 1
4) 3y - 2x = 9
5) 2y = -1x - 8
6)y -4 = -3(x-3)
Answer:
Use Calculator
Step-by-step explanation:
E
answer quickly please
Answer:
Positive
Step-by-step explanation:
Answer:
positive
Step-by-step explanation:
Jordan bought a new sketchbook with 150 pages in it for art class. Each day, he uses 2 pages for assignments and sketchings. Which equation represents the total number of blank pages, p, remaining after d days?
A. p= -2d - 150
B. p= -2d + 150
C. p= 2d - 150
D. p= 2d + 150
Answer:
B.
Step-by-step explanation:
He uses two pages each day so they would be negative two and he had positive 150 pages, so the answer would be B.
Pls help!!!! It takes Frank 12 minutes to walk a mile. How many miles can he walk in 1 hour?
Answer:
5 miles
Step-by-step explanation:
There are 60 minutes in 1 hour, so to find how many miles he can walk, we simply multiply:
[tex]60 min * \frac{1 mile}{12 min} = 5 miles[/tex]
The social study teacher wants to know weather the students in the entire school prefers a model United national activity. The teacher draws a random sample from the following groups. Which group best represents the population he should take a random sample from to get the best results For His survey A All teachers in the school. B all boys in each grade. C all students in each grade D our students in the social studies club
Answer:
I'm pretty sure your answer would be B
Step-by-step explanation:
The teacher wants answers from all the students but it would take to long to ask every single person so it would only make sense to ask every boy in each grade
Factor the common factor out of each expression. PLEASE HELP! WILL GIVE BRAINLIEST
Answer:
1. 4(4-9m) 2. 8(x-5) 3. 7(5-3a) 4. 2(2n-1) 5. -10(3n+1) 6. 6(5n+1) 7. 10(3x+7) 8. -3(n+4) 9. 2(9-2a) 10. 8(1-k) 11. 5(8-7n) 12. 5(9x-5)
Step-by-step explanation:
50 points! i honestly forgot how to do algebra lol can someone help me and explain the steps for me?
2x + 14 = 18 x=?
Answer: x=2
Step-by-step explanation: Plug 2 in the equation. 2 x 2 is 4. 4 + 14 is 18.
Can someone pls help me / alguien me puede ayudar
Answer:
The simplified expression is:
[tex]\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8[/tex]
Step-by-step explanation:
Given the expression
[tex]\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)[/tex]
[tex]\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a[/tex]
[tex]=\frac{2}{5}y+\frac{1}{5}x-0.2y-6-2[/tex]
[tex]\mathrm{Group\:like\:terms}[/tex]
[tex]=\frac{2}{5}y-0.2y+\frac{1}{5}x-6-2[/tex]
Add similar elements
[tex]=0.2y+\frac{1}{5}x-6-2[/tex]
[tex]=0.2y+\frac{x}{5}-6-2[/tex]
[tex]=0.2y+\frac{x}{5}-8[/tex]
[tex]=0.2y+0.2x-8[/tex]
Thus, the simplified expression is:
[tex]\frac{2}{5}y+\frac{1}{5}x-0.2y-6+\left(-2\right)=0.2y+0.2x-8[/tex]
Gabriella's school is selling tickets to a choral performance. On the first day of ticket sales the
school sold 14 senior citizen tickets and 14 child tickets for a total of $252. The school took in
$154 on the second day by selling 9 senior citizen tickets and 7 child tiekets. Find the price of a
senior citizen ticket and the price of a child ticket.
Answer:
Step-by-step explanation:
The Buddha taught that just as individual states had laws, there was a universal law. Each person's station in life was a reflection of their karma, or the cumulative extent to which they had followed or broken the universal law in previous lives. Chinese leaders began to appoint skilled bureaucrats rather than solely employing hereditary officeholders, and Confucian thinkers held that people became fully developed members of society through a process of education, rather than simply by noble birth.
find the equation of the line.
Please explain how to do this
Due tonight please help!!!!
Will give brainlist
Answer:
y=5x+11
Step-by-step explanation:
using point-slope equation, we substitute.
parallel lines have the same slope.
y-y¹=m(x-x¹)
y-6=5(x+1)
y-6=5x+5
y=5x+11
(please comment if you're confused on anything!)
Answer:
Find the equation of a line given that you know a point of point on the line in the slopes the equation of the line is typically written as y=mx+b where am is slope and b is the y- intercept
help please it’s math
Answer:
Step-by-step explanation:
You should rewrite it in the form of [tex]a^{2} + b^{2}[/tex], where a=10 and b=3x, [tex]10^{2}-(3x)^{2}[/tex]. Then use the difference of squares. to get (10+3x)(10-3x)
Answer:
(10−3x) (10+3x)
Step-by-step explanation:
100 - 9x²
100 - 9x²10²−(3x)²
(10−3x) (10+3x)
HELP HELP HELP PLEASE ASAP IM STUCK!!
Answer:
B
Step-by-step explanation:
only one that gives the y value of 9 for the x value of 1
It’s me, the girl who hates geometry and need help with figures!!!
Answer:
Yes. It is an obtuse triangle
what are the aims and objective of farm settlement scheme
Answer:
The farm settlement scheme has i.a. the following objectives: 1. to bring about rural progress, 2. to demonstrate that by careful planning, farms can be established and operated by young, educated farmers which will provide a comfortable standard of living for the owners
Plz plz plz answer fast and sub to Pewdiepie
Answer:
(C)
Step-by-step explanation:
plz give brainlist
guys i need help on the midpoint
S (-3, 3) and T (-8, 6)
Answer: It would be (-11/2,9/2)
Step-by-step explanation: Use the midpoint formula to calculate the answer, it is (x1+x2)/2,(y1+y2)/2
Answer:
(-5.5, 4.5)
Step-by-step explanation:
(x2+x1)/2
(y2+y1)/2
-8+-3=-11/2=-5.5
6+3=9/2=4.5
i need help, please!!!
Answer: m = 1/3
Step-by-step explanation:
Please help please ASAP
Answer:
#1 parallel
#2 parallel
#3 perpendicular
Step-by-step explanation:
Lines parallel have the same slope 1 and 2 have same slope of -5/3
3 is perpendicular: slope is 3/5 ( slope of any line perpendicular to a line with slope m is negative reciprocal )
Jameel Hardware sells door locksets for $74.99, including installation. The company hires
subcontractors to install the locksets. The subcontractors receive $22.00 per lockset installed.
Other overhead costs total $7.56 per set. If Jameel Hardware pays $32.55 for each lockset, what is
the company's net profit?
А
$6.44
$12.88
с
$20.74
D
$34.88
Answer:
12.88
Step-by-step explanation:
Answer:
its 12.88
Step-by-step explanation:
can anyone help? i suck at math lol
Answer:16384
Step-by-step explanation:
4*4*4*4+4*4*4
A veterinarian weighed a sample of 666 puppies. Here are each of their weights (in kilograms): 1, 2, 7, 7, 10, 151,2,7,7,10,151, comma, 2, comma, 7, comma, 7, comma, 10, comma, 15 The mean of these weights is \bar x=7\text{ kg} x ˉ =7 kgx, with, \bar, on top, equals, 7, start text, space, k, g, end text. What is the standard deviation? Round your answer to two decimal places. s_x\approxs x ≈s, start subscript, x, end subscript, approximately equals \text{kg}kgstart text, k, g, end text
Answer:
The standard deviation of the weight, σ, is approximately 4.73 kg
Step-by-step explanation:
The weights of the six puppies are;
[tex]x_i[/tex] = 1, 2, 7, 7, 10, and 15
The number of puppies, n = 6
Therefore, we have;
The mean = μ = ∑x/n = (1 + 2 + 7 + 7 + 10 + 15)/6 = 7
The standard deviation, σ, is given as follows;
[tex]\sigma =\sqrt{\dfrac{\sum \left (x_i-\mu \right )^{2} }{n}}[/tex]
By substituting, we have;
[tex]\sigma =\sqrt{\dfrac{ \left (1-7 \right )^{2} + \left (2-7 \right )^{2} + \left (7-7 \right )^{2} + \left (7-7 \right )^{2} + \left (10-7 \right )^{2} + \left (15-7 \right )^{2} }{6}}[/tex]
Simplifying gives;
[tex]\sigma =\sqrt{\dfrac{ \left (-6 \right )^{2} + \left (-5 \right )^{2} + \left (0 \right )^{2} + \left (0 \right )^{2} + \left (3 \right )^{2} + \left (8 \right )^{2} }{6}} =\sqrt{\dfrac{ 36 + 25 + 0 +0+ 9 + 64 }{6}}[/tex]
[tex]\sigma =\sqrt{\dfrac{ 134 }{6}} = \sqrt{\dfrac{67}{3} } \approx 4.72582[/tex]
The standard deviation of the weight, σ ≈ 4.73 kg to two decimal places.
Answer:
It’s actually 5.18 kg on khan
Step-by-step explanation:
What is the equation of this graphed line?
I will mark brainlest!!
Answer:
y = -9/8x +7
Step-by-step explanation:
We know two points on the line so we can find the slope
m = ( y2-y1)/(x2-x1)
m = ( -2 -7)/(8 -0)
= -9/8
We also know the y intercept which is 7
The slope intercept form of the line is
y = mx+b where m is the slope and b is the y intercept
y = -9/8x +7
Answer:
[tex]y=-\frac{9}{8}x+7[/tex]
Step-by-step explanation:
Slope-intercept form is y=mx+b
Use the formula for slope: m=(y2-y1)/(x2-x1)
m=(-2-7)/(8-0)
m=-9/8
The graph shows that b, the y-intercept, is at (0,7)
Therefore, the final equation is [tex]y=-\frac{9}{8}x+7[/tex]
Help me with these questions 15points
trying to find rise and the run
Answer: rise is 4 and run is 5
Step-by-step explanation:
Answer:
down below
Step-by-step explanation:
To find the rise over run, you need to pick a point that intersects one of the axises. Then, you need to find a point that intersects the other axis. Third, you find the first point and begin moving up or down until you reach the height of the other point. From there, you count along that height line until you reach the second point. The number from counting on the y axis is the rise and the number from counting on the x axis is the run. So, you take the rise and put it over the run.
Hope this helps! :)
Which expression is equivalent to -3\4 divided by (-8/12)
when 1/2 divided by (-8 / 12), it is equivalent to ( -3 /4)
Let an expression be 'x'
Given that, an expression must exist that is equivalent to -3/4 when divided by (-8/12).
This leads us to the conclusion that = x / (-8 / 12) = -3 / 4
It is equivalent to = x * (- 12 / 8) = -3 / 4
We get = x * (- 12 / 8) * (- 8 / 12) = -3 / 4 * (-8 / 12) by multiplying (- 8 / 12) on both sides.
We get = x = - 3/ 4 * (-8 / 12) by canceling like numbers.
x = 24 / 48
x = 1 / 2
Therefore, 1/2 divided by (-8 / 12) equals (-3 / 4).
learn more about solving expressions here:
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The difference between 1/3 of a certain number and 1/4 of the same number is 3.
What is the number?
24. 36. 48. 60. or 72?
Answer:
36
Step-by-step explanation:
Let the required number be x.
[tex] \frac{1}{3} \: of \: x = \frac{1}{3}x = \frac{x}{3} \\ \\ \frac{1}{4} \: of \: x = \frac{1}{4}x = \frac{x}{4} \\ \\ according \: to \: the \: given \: condition \\ \\ \frac{x}{3} - \frac{x}{4} = 3 \\ \\ \frac{4x - 3x}{3 \times 4} = 3 \\ \\ \frac{x}{12} = 3 \\ \\ x = 12 \times 3 \\ \\ \huge \red{ \boxed{ x = 36}}[/tex]
The number is 36.
Given that,
The difference between one-third of a certain number and one-fourth of the same number is 3.Here we assume the number be x.
Based on the above information, the calculation is as follows:
[tex]\frac{x}{3} - \frac{x}4} = 3 \\\\\frac{4x - 3x}{12} = 3\\\\x = 36[/tex]
Learn more: brainly.com/question/17429689
if f(x)=mx+b what are the values of m and b
The m variable is the slope of the line and controls its 'steepness'. A positive value has the slope going up to the right. A negative slope goes down to the right. The b variable is the y intercept - the point where the line crosses the y axis.
example 1
y = mx + b
m = slope b = y-intercept
y = 3x - 1
m = 3 and b = -1
example 2
y = b + mx
b = y-intercept m = slope
y = 5 - 1/2x
m =- 1/2 and b = 5
(hope this helped!!)
can i have brainliest?
Use the picture below to solve for the missing information, given PQ = 2x + 8, QR = x + 11, and PR = 5x - 3.
Answer:
Step-by-step explanation:
I think x=-2
The value of x is 11. Then the length of the line segment PR, PQ, and QR will be 52, 30, and 22, respectively.
What are collinear points?An axis is a term used to describe a line on which points are located, particularly if that line is connected to a triangle or other geometric shape. Since two factors determine a line, two points are transparently collinear. If the points are in a line, then the points are collinear points.
Let A, B, and C be the collinear points. Then the condition of the collinear will be
AB + BC = AC
PQ = 2x + 8, QR = x + 11, and PR = 5x - 3. From the figure, the points P, Q, and R are the collinear points. Then we have
PQ + QR = PR
2x + 8 + x + 11 = 5x - 3
3x + 19 = 5x - 3
22 = 2x
x = 11
Then the line segment PR, PQ, and QR will be
PQ = 2 × 11 + 8
PQ = 22 + 8
PQ = 30
QR = 11 + 11
QR = 22
PR = 5 × 11 - 3
PR = 55 - 3
PR = 52
The value of x is 11. Then the length of the line segment PR, PQ, and QR will be 52, 30, and 22, respectively.
More about the collinear points link is given below.
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What does the y-intercept of a line mean?
Answer:
It's the y value of the point where the line intersects the y- axis.
pls help
y = 4x + 2
Answer:
do you want a graph?
Step-by-step explanation:
x is -0.5
y= 2