Answer:
In the elimination method you either add or subtract the equations to get an equation in one variable. When the coefficients of one variable are opposites you add the equations to eliminate a variable and when the coefficients of one variable are equal you subtract the equations to eliminate a variable.
Hope this helps!
If you need a more in-depth answer, don't hesitate to ask!
Answer:
elimantion method in elimantion method, the coffecients of the given equations are mulitiplied by a constant to make the coffiecents of one variable in the same in both equations. Finally any one variable remains at the end, which can then be easily solved.
Step-by-step explanation:
How many 45° angles would it take to turn in a complete circle
Answer: 8 45 degree angles
Step-by-step explanation:
A circle is 360 degress. 360 divided by 45 equals 8
Answer:
8
Step-by-step explanation:
a circle is 360°. to find how many 45° angles it would take to turn in a complete circle:
360°/45°=8
it would take 8 45° angles to turn in a complete circle
What is the area of this polygon?
Answer:
We need more info
Step-by-step explanation:
Which expression is equivalent to 15x + 3?
Answer:
the answer is 15x+3=3(5x+1)
bu soruyu yapana 15 puan
Answer:
?????????????
Step-by-step explanation:
2) Find the area. *
7 points
12 cm
2 cm
4 cm
6 cm
24
O 12
36
48
Answer:
36cm
first we extend one of the half lines.
now we have 2 rectangles with sides
6cm and 4cm and 2cm and 6cmusing area of rect formula we find the area of both the rects separately and then add them
Which factors cause air masses to move in the United States? Check all that apply.
prevailing easterlies
prevailing westerlies
jet stream
trade winds
front
Answer:
B and C
Step-by-step explanation:
Answer:
answer in picture
Step-by-step explanation:
NEED HELP AS SOON AS NOW, PLEASE AND THANK YOU
ALREADY WAITED 2 HOURS
george has opened a new store and he is monitoring its success closely. He has found that this store’s revenue each month can be modeled by r(x)=x2+5x+14 where x represents the number of months since the store opens the doors and r(x) is measured in hundreds of dollars. He has also found that his expenses each month can be modeled by c(x)=x^2−4x+5 where x represents the number of months the store has been open and c(x) is measured in hundreds of dollars.
the new store will sell 900 items in its fifth month in business
the store will have a profit of $900 after its fifth month in business
the store will have a profit of $5400 after its fifth month in business
the new store will sell 5400 items in its fifth month in business
Answer:
Step-by-step explanation:
The correct answer is that the new store will have a profit of $5400 after its fifth month.
Profit is given by subtracting revenue minus cost:
(R-C)(x) = (x²+5x+14)-(x²-4x+5) = x²-x²+5x--4x+14-5 = 5x+4x+14-5=9x+9
Using 5 for x,
(R-C)(5) = 9(5) + 9 = 45+9 = 54
This is in hundreds of dollars, so it represents $5400.
A pile of sand has a weight of 60 kg
The sand is put into a small bag, a medium bag and a large bag in the ratio 2:3:7
Work out the weight of the sand in each bag
Small bag = 2x
Medium bag = 3x
Large bag = 7x
2x + 3x + 7x = 60
12x = 60
x = 60/12
x = 5
Small bag = 2(5) = 10 kg
Medium bag = 3(5) = 15 kg
Large bag = 7(5) = 35 kg
Done.
7/22 as a decimal rounded to nearest hundreths
Answer:
0.318= 0.32 hope this helps tell me if I'm wrong
Edit: 0.318. 1 is in the hundredths place so 8 would bump it up to 2 so it would be 0.32
The given fraction in decimal form as 0.32.
The given fraction is 7/22.
How to convert fraction to decimal?The fraction bar separating the “part” and the “whole” represents division. This means that all fractions can be converted into decimals by dividing the numerator by the denominator.
Now, the given fraction can be converted to decimal as follows
7/22 = 0.3181
To the nearest hundredths is 0.3181 ≈ 0.32
Therefore, the given fraction in decimal form as 0.32.
To learn more about the fraction to decimal visit:
https://brainly.com/question/28600610.
#SPJ2
what is 4300x300 if you dont know it just try
Answer:
1,290,000
Step-by-step explanation:
hecker skills
Write an inequality for the following statement: Sharon earns at least 8 dollars (d) per baby-sitting job.
Answer:
d ≥8
Step-by-step explanation:
She is earning AT LEAST meaning that she gets at least more than 8 dollar per job
Linda is paid double her normal hourly rate for each hour she works over 40 hours in a week. Last
week she worked 52 hours and earned $544. What is her hourly pay?
Answer:
her hourly pay is £8.50
Step-by-step explanation:
h= hourly pay
n = number of hours worked over 40 hours in a week
week pay = 40h + (n x 2 x h)
544 = 40h + 2nh
52 - 40 = 12, so n = 12
544 = 40h + 2 x 12 x h
544 = 40h + 24h
544 = 64h
544/64 = 8.5 h=8.5 (£8.50)
just to check:
£8.50 x 40 = £340
£8.50 x 2 x 12 = 204
340 + 204 = 544 yayy the answer is correct
hope this helps x
plzzz can i hv brainliest
wasssssupppppppppppppp
Answer:
Wasssupppp yallll
what is 15.4+5.4 its very hard for me to learn after all home school
Answer:
15.4+5.4=20.8
Answer: 20.8
Step-by-step explanation: Use Long addition to Evaluate
Have a brilliant day mate - your friend Lily ^_^
write 5/6 as a decimal
Answer:
0.83333333
Step-by-step explanation:
Is that what you wanted?
look it upppppppp B))
Nasim is taking a multiple choice test with a total of 50 points available. Each question is worth exactly 2 points. What would be Nasim's test score (out of 50) if he got 5 questions wrong? What would be his score if he got xx questions wrong?
Answer:
40 or 80%
Step-by-step explanation:
50 points / 2 points per questions = 25 questions
25 questions - 5 wrong answered questions = 20 right answered questions
20 right answered questions x 2 points each = 40 points in total
pls help will mark branliest
Answer:
25 divided by 1/4
Step-by-step explanation:
please help!!!!!!!!!
Answer:
64
Step-by-step explanation:
to be honest i just looked it up it thats what i do with my work and i always get it right so...
Solve the equation below. Simplify if necessary.
-4/7v = -8 2/3
Show how you did it please :)
Answer:
15 1/6
Step-by-step explanation:
change -8 2/3 into an improper fraction = -26/3
-4/7v = -26/3
cross-multiply:
3(-4v) = (-26)7
-12v = -182
v = 182/12
v = 15 1/6
What is an equation of the line that passes through the points (-6, -2) and
(6,8)?
Answer:
y=5/6x+b
Step-by-step explanation:
use formula (y2-y1)/(x2-x1) to look for the slope:
(8-(-2))/(6-(-6))
=10/12
=5/6 (simplified)
then, use the formula y=mx+b to get the equation by substituting m and x, y to either (-6, -2) or (6, 8):
8=5/6(6)+b
8=5+b
3=b (subtract 5 on both sides)
equation:
y=5/6x+3
Find the average rate of change over the interval (-1, 2] (x=-1 and x=2).
Answer:
The internal rate of change over the interval (-1,2) is 1
How much higher is -200m than 450m
Answer:
650
Step-by-step explanation:
its ez trust
Answer:
10826
Step-by-step explanation:
hdsjsjdbebevehejejhehd
Tell whether the angles are complementary or supplementary. Then find the value of x.
Answer:
complementary
x = 15
Step-by-step explanation:
The outer angle is a right angle as denoted by the red square mark. A right angle has a measure of 90°.
Complementary angles are angles whose measures have a sum of 90°.
Angles 3x and 45 are complementary angles.
3x + 45 = 90
3x = 45
x = 15
Answer:
complementary
x = 15
Answer:
complimentary angle
x=15
8th grade math!!
please helppp
Noticed how it forms a supplementary angle.
A supplmentary angle is basically two angles that added up to 180 degrees.
So we have:
64 + x = 180
Then we solve for "x", so "x" = 116.
Hope that makes sense :)
Triangle ABC has vertices A(-5, -1), B(5, -1), and C(0, -4). Is it scalene, isosceles or equilateral
Answer:
Isosceles Triangle
Step-by-step explanation:
Triangle ABC has vertices A(-5, -1), B(5, -1), and C(0, -4). Is it scalene, isosceles or equilateral?
We solve this question using vertices formula:
√(x2 - x1)² + (y2 - y1)² when given vertices: (x1, y1) and (x2 , y2)
For Side AB
A(-5, -1), B(5, -1)
AB = √(5 - (-5))² + (-1 -(-1))²
AB= √(5 + 5)² + (-1 + 1)²
AB = √10² + 0
AB = √100
AB = 10 units
For Side BC
B(5, -1), C(0, -4)
BC = √(0 - 5)² + (-4 -(-1))²
BC = √-5² + (-4 + 1)²
BC = √25 + -3²
BC = √25 + 9
BC = √34
For Side AC
A(-5, -1), C(0, -4).
AC = √(0 - (-5))² + (-4 - (- 1)²
AC = √5² + -3²
AC = √25 + 9
AC = √34
Therefore this triangle is an isosceles triangle because 2 of its sides (AC and BC ) are equal to one another
I NEED HELPPP ASAPPPPP
What are the domain and range of g ( x ) =
-1/4( x - 17)2 + 61?
Answer:
Find the domain by finding where the function is defined. The range is the set of values that correspond with the domain.
Domain: (−∞,∞),{x|x∈R}
Range: (−∞,∞),{y|y∈R}
Step-by-step explanation:
Step-by-step explanation:
step 1. I assume g(x) = -(1/4)(x - 17)^2 + 61
step 2. domain is all the possible x's. all x's are permissible
step 3. domain: "all x" written as ( inf, -inf )
step 4. range is all the possible y values. g(x) is a quadratic pointing downward. the vertex (17,61) is the highest included y value
step 5. range: [61, -inf).
hi I need answer please. I will mark brainliest who can answer thankyou...
Answer:
a) (0,0), (-4, 1), (-1,2)b) NoneStep-by-step explanation:
There are two ways of solving similar problems. One- substitute x and y with respective coordinates and verify if the inequalities are correct. Two- graph the lines and see if the points are in the intersection zones.We'll go with the first method. Remember both inequalities should be correct for the same point to accept it as a solution.Given points
(0,0), (-4,1), (-1,2)a) The system of inequalitiesy > x - 1y < -1/2x + 2Point (0,0)
0 > 0 - 1 = -1 correct0 < -1/2(0) + 2 = 2 - correctYesPoint (-4,1)
1 > -4 - 1 = -5 - correct1 < -1/2(-4) + 2 = 4 - correctYesPoint (-1,2)
2 > -1 - 1= -2 - correct2 < -1/2(-1) + 2 = 2.5 - correctYesb) The system of inequalitiesx - 2y ≥ 42x - y ≥ -1Point (0, 0)
0 - 2(0) = 0 ≥ 4 - incorrect2(0) - 0 = 0 ≥ -1 - correctNoPoint (-4, 1)
-4 - 2(1) = - 6 ≥ 4 - incorrect2(-4) - 1 = - 9 ≥ -1 - correctNoPoint (-1,2)
-1 - 2(2) = -5 ≥ 4 - incorrect2(-1) - 2 = - 4 ≥ -1 - correctNo9514 1404 393
Answer:
a. all points are part of the solution set
b. no points are in the solution set
Step-by-step explanation:
Graphs of the two systems of inequalities are attached.
a) The red area on the graph is the solution. The two inequalities can be combined to one compound inequality:
x -1 < y < -1/2x +2
The two boundary lines intersect at x-1 = -1/2x +2 ⇒ x = 2, so there are no points in the solution set with x-values of 2 or greater.
All of the given points are in the solution set.
__
b) The green area of the graph is the solution. Solving each inequality for y gives ...
x -2y ≥ 4 ⇒ 1/2x -2 ≥ y
2x -y ≥ -1 ⇒ 2x +1 ≥ y
The allowed values of y must be less than or equal to the minimum of these limits. The limits have the same value at 1/2x -2 = 2x +1 ⇒ x = -2, so the solution set is the area below and right of that intersection point of the two boundary lines.
None of the given points are in the solution set.
If
(
m
2
−
1
)
2
−
9
is expressed as
(
m
2
+
2
)
(
n
+
p
)
(
n
−
p
)
, what are the values of
n
and
p
?
Answer:
you need to repost your question bcos it's not understandable
The slope of the line that passes through the points (9,11) and (3,6) is what?
Answer:y= -5
X=-6
-5/6
Step-by-step explanation:
In ΔLMN, the measure of ∠N=90°, NL = 6.8 feet, and LM = 9.4 feet. Find the measure of ∠L to the nearest tenth of a degree.
Answer:
L=43.6637≈43.7∘
Step-by-step explanation:
Answer:
43.7
Step-by-step explanation:
SOH-CAH-TOA
cosL= adjacent/hypotenuse=6.8/9.4
cosL=6.8/9.4
L=[tex]cos^{-1}[/tex](6.8/9.4)
L=43.6637≈43.[tex]7^{o\\}[/tex]