The system of equation 2x + y = 2 y = –2x – 1 has infinitely many solutions because the coefficient of the x and y in the equations are same.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have a system of equations:
2x + y = 2 …(1)
y = –2x – 1 or
2x + y = -1 ...(2)
As we can see the coefficient of the x and y in the equation (1) and (2) are same which means they infinitely many solutions.
Thus, the system of equation 2x + y = 2 y = –2x – 1 has infinitely many solutions because the coefficient of the x and y in the equations are same.
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15 1/2 times 2 1/8 ??
Answer:
[tex]32 \times \frac{15}{16} [/tex]
Step-by-step explanation:
15 1/2 times 2 1/8 ??
[tex](15 \times \frac{1}{2} ) \times( 2 \times \frac{1}{8} )[/tex]
15 ×2 =30 +1 =31/2
2×8=16+1=17/8
[tex] \frac{31}{2} \times \frac{17}{8} [/tex]
[tex] \frac{527}{2 \times 8} [/tex]
527/16
[tex]32 \frac{15}{16} [/tex]
Which multiplication expression does the model show?
[tex]\sf How \; do \; you\; solve\; this?[/tex]
[tex]\bf 9\left(2x+1\right)=\:9x-18[/tex]
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
[tex] \textbf{Here we go :} [/tex]
[tex]\qquad \sf \dashrightarrow \:9(2x + 1) = 9x - 18[/tex]
[tex]\qquad \sf \dashrightarrow \:18x + 9 = 9x - 18[/tex]
[tex]\qquad \sf \dashrightarrow \:18x - 9x = - 18 - 9[/tex]
[tex]\qquad \sf \dashrightarrow \:9x = - 27[/tex]
[tex]\qquad \sf \dashrightarrow \:x = - 27 \div 9[/tex]
[tex]\qquad \sf \dashrightarrow \:x = - 3[/tex]
[tex] \textsf{Hence, value of x is -3} [/tex]
Someone please help I’m literally so close to finishing this assignment and schools almost over so I need to bring up my grade quick
Step-by-step explanation:
if that is a problem for the end of the school year, what problems did you solve during the year ?
this question needs one of the basic principles of angles :
the sum of all angles around one point on one side of a line is always 180°, because that line can be seen as the diameter of a circle, and the point is the center of that circle. so, all angles in one side of the line are representing a half-circle.
this special point here is clearly T.
and 85 + x = 180
x = 180 - 85 = 95°
The volume of the rectangular pyramid below is 3240 units^3
3
. Find the value of xx.
The pyramid with a volume of 3240 unit³, base of 20 by 18 unit has a height of 27 unit
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Volume of pyramid = (1/3) * area of base * height
Hence:
3240 = (1/3) * (20 * 18) * x
x = 27 units
The pyramid with a volume of 3240 unit³, base of 20 by 18 unit has a height of 27 unit
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If the interest on Rs. 100 be Rs. 6.25p. what is the interest on Rs. 320?
6.25 / 100 = 0.0625 ( interest rate)
320 x 0.0625 = 20
answer: 20
Find the area of the regular polygon
Answer:
162m²
Step-by-step explanation:
distance from corner to center = 1/2 of the diagonal
all sides are equal, and this has 4 sides, so it is a square
9m = 1/2 of diagonal
multiply both sides by 2 to isolate the diagonal
18m = diagonal
area of square = length²
length * √2 = diagonal
given the diagonal, we can find the length and then the area
length * √2 = diagonal
divide both sides by √2 to find the length
18m/√2 = length ≈12.7
square the length to find the area
area = 162 m²
In the parallelogram shown, ae = p − 8, ce = 2p − 58, and de = p 15. parallelogram a b c d is shown. diagonals are drawn from point a to point c and from point d to point b and intersect at point e. what is the length of line segment eb? 42 units 50 units 65 units 73 units
If diagonals are drawn from point a to point c . The length of line segment eb is 65 units.
Length of line segmentSince the diagonal of parallelogram bisect one another, hence:
AE=CE
EB=DE=P+15
P-8=2P-58
P=50
Hence:
EB=P+15
EB=50+15
EB=65 units
Therefore the length of line segment eb is 65 units.
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Good afternoon, the
correct answer is 65 units
13. How are squares and triangles the same? How are they different?
Answer:
Squares and triangles are both polygons and right triangles and squares both have at least one right angle. They are different because squares have 4 sides and triangles have 3. Also, triangle have a total of 180 degrees while squares have a total of 360 degrees.
Hope this helped you! I would appreciate a Brainliest if this helped! Have a good day!
write down the first five terms of the following sequences. a) start at 26 and subract 3. b)start at -3 and add 10.
Answer:
26, 23, 20, 17, 14, 11
-3, 7, 17,27,37,47
Step-by-step explanation:
sequence add and subject
Andy is 6.25 miles north of the center of town. william is at the center of town. at noon they both start walking north.
andy walks at a constant rate of 7.5 miles in 3 hours. william walks at a constant rate of 15 miles in 4 hours.
how many hours does it take william to catch up with andy?
Answer: 5 hours
Step-by-step explanation:
[tex]speed=\frac{distance}{time}[/tex]
Andy speed = 7.5/3 = 2.5 mph
William speed = 15/4 = 3.75 mph
1. Write an equation that represents the question
let h = # of hours it takes William to catch up with andy
2.5h + 6.25 = 3.75h
2. subtract 2.5h from both sides
6.25 = 1.25h
3. Divide 1.25 from both sides
[tex]\frac{1.25h}{1.25} =\frac{6.25}{1.25}[/tex]
h = 5
Therefore, we know it will take 5 hours for William to catch up with andy.
The radius of a circle is 8 meters. What is the circle's area? Use 3.14 for .
Step-by-step explanation:
A = πr^2
When r=8m and π = 3.14,
A = 3.14*8*8=200.96sq.m
Answer:
[tex]\huge\boxed{\bf\:200.96\:m^{2}}[/tex]
Step-by-step explanation:
If,
Radius (r) = 8 mπ = 3.14Area (A) of the circle = ?
A = πr² [tex]\dashrightarrow[/tex] Formula
A = 3.14 × (8)²
A = 3.14 × 64
A = 200.96 m²
[tex]\rule{150pt}{2pt}[/tex]
if f(x)=x^2+2x-10 what is f(-2)
Answer:
-2
Step-by-step explanation:
f(2)= 2^2 + 2(2) - 10
= 4+4-10
=8-10
= -2
z^2 + 11z+ 28 find the factor of polynomial
Answer:
(z+7)*(z+4)
Step-by-step explanation:
The first term is, z2 its coefficient is 1 .
The middle term is, +11z its coefficient is 11 .
The last term, "the constant", is +28
Step-1 : Multiply the coefficient of the first term by the constant 1 • 28 = 28
Step-2 : Find two factors of 28 whose sum equals the coefficient of the middle term, which is 11 .
-28 + -1 = -29
-14 + -2 = -16
-7 + -4 = -11
-4 + -7 = -11
-2 + -14 = -16
-1 + -28 = -29
1 + 28 = 29
2 + 14 = 16
4 + 7 = 11 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 4 and 7
z2 + 4z + 7z + 28
Step-4 : Add up the first 2 terms, pulling out like factors :
z • (z+4)
Add up the last 2 terms, pulling out common factors :
7 • (z+4)
Step-5 : Add up the four terms of step 4 :
(z+7) • (z+4)
Which is the desired factorization
HELP. HOW DO I SOLVE THIS?
The margin error is 2.82%.
What is Margin of Error?A margin of error is a statistical measurement that accounts for the difference between actual and projected results in a random survey sample
The margin of error for a sample proportion is given by
[tex]z_{\alpha /2}\sqrt{ \frac{p(1-p)}{n} }[/tex]
where p is the sample proportion and n is the sample size.
Consider the confidence level of 95%, then [tex]z_{\alpha /2}[/tex] = 1.96
p = 53% = 0.53 and n =1200
Thus, Margin of error=
[tex]z_{\alpha /2}\sqrt{ \frac{p(1-p)}{n} }[/tex]
=1.96[tex]\sqrt{ \frac{0.53(1-0.53)}{1200} }[/tex]
=1.96*0.0144
=0.0282
= 2.82%
Hence, margin error is 2.82%.
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Which statement below is always true?
A. Two parallel lines intersect at a right angle.
B. Two parallel lines lie in the same plane.
C. Two lines that are skew to each other intersect at one point.
D. A transversal never intersects another line.
Answer:
The answer is B. Two parallel lines lie in the same plane.
Step-by-step explanation:
Parallel lines never cut (intersect) or meet each other, and they lie on the same plane.The answer is Choice B
Step-by-step explanation:
Parallel lines never intersect
Lines that are skew don't have to intersect
Transversal lines intersect other lines
Write a function rule for “The output is three less than the input x.”
Answer:
y=x-3
Step-by-step explanation:
3/4(x+2)=x-2 . solve for x
a×b=2a+16 two positive consecutive even integers
The solution of the given two positive consecutive even integers will be a = 20 and b = 21
What is an integer?An integer is a number whose values are ranges from 0 to infinite positive and zero to infinite negative.
Given that :
2a-3b = -23
a and b are consecutive
Find:
a and b
Computation:
a = b - 1
So,
2a-3b = -23
2(b-1)-3b = -23
2b - 2 - 3b = -23
-b = -21
b = 21
So
a = b - 1
a = 21-1
a = 20
Hence the solution of the given two positive consecutive even integers will be a = 20 and b = 21
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PLEASE HELP !!!!!!!!!
Answer:
17,17,17,0.6 805-774-0842 38.05-1.06.52-2.06 1.46-2.56l8.5-4.5c1.34 98.0.4758.101Step-by-step explanation:
thanks For Answering For My Subscribe
[(-3)+9] × [(-10)-(-9)]
please solve this
I need help finding the unknown measures and equations pls.
Answer:
Step-by-step explanation:
10x + 8x = 180 (angles on straight line)
x = 10
AFH = 10x = 100
AFE = 8x = 80
If the area of a round cricket oval is 27500 square meters, Find the distance from the centre of the ground to the boundary.
The distance from the centre of the ground to the boundary based on the area given is 93.58 meters.
How to calculate the distance?From the information given, the area of a round cricket oval is 27500 square meters. The information simply wants us to calculate the radius which will be calculated thus:
Area of a circle = πr²
πr² = 27500
(3.14) × r² = 27500
r² = 27500/3.14
r² = 8757.96
r = ✓8757.96
r = 93.58
Therefore, the distance from the centre of the ground to the boundary is 93.58 meters.
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HELP ME OMG PLEASEEEEEEEEEEEEE
[tex]v = \frac{lwh}{3} [/tex]
[tex]v = \frac{12 \times 10 \times 3}{3} [/tex]
[tex]v = 120 \: {ft}^{3} [/tex]
Volume of the rectangular prism:[tex]v = lwh[/tex]
[tex]v = 12 \times 10 \times 7[/tex]
[tex]v = 840 \: {ft}^{3} [/tex]
Total volume:[tex]v = 120 + 840[/tex]
[tex]v = 960 \: {ft}^{3} [/tex]
pyramid:
lwh/2
=12×10×3/3
=120 ft^3
prism:
whl
=12×10×7
=840 ft^3
all together:
=960 ft^3
The weekly salary of a security guard, $S, is based on the formula, S=B+8H where B is the basic wage in dollars, and H is the number of hours he is on duty per week.
(a) Given that the security guard received $710 for a total of 45 hours of work in a particular week, find the basic wage.
(b)
(i) Calculate the salary he received after working for 42 hours in one week.
(ii) At the end of another week, the security guard earned $662. Find the number of hours worked that week.
[tex]\\[/tex]
ty! ~
Answer:
A. 350
B. (i) $686 (ii) 39 Hours
Step-by-step explanation:
Based on what's given..
A)
[tex]\sf S=B+8H[/tex]
[tex]\sf 710=B+8\times45[/tex]
[tex]\sf 710=B+360[/tex]
[tex]\sf B=710-360[/tex]
[tex]\boxed{\sf B= 350}[/tex]
B)
(i)
[tex]\sf S=350+8\times42[/tex]
[tex]\sf S=350+336[/tex]
[tex]\boxed{\sf S=686}[/tex]
(ii)
[tex]\sf 662=350+8H[/tex]
[tex]\sf 8H=662-350[/tex]
[tex]\sf H=312 \div 8[/tex]
[tex]\boxed{\sf H=39}[/tex]
The golf club can send a team of four students
to the next golf tournament. If there are 18
Students in the club, How many different teams
Of 6 can be selected?
Answer:
18,564
Step-by-step explanation:
The formula is n! / (r!(n-r)!
n is the total number of people and r is the number of people to be picked
n = 18, r = 6
18! / (6!(18-6)!)
18! / (6!*12!)
Total combinations = 18,564
Answer:
3
Step-by-step explanation:
18 ÷ 6 = 3
check and make sure the answer is right so you do the opposite
3 × 6 = 18
find the measure of each arc.
a. JL
b. KM
c. JLM
d. JM
The measure of each arc.
a. JL = 132
b. KM =147
c. JLM = 200
d. JM =120
What is angle?An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint.
The measure of JL
=m JK+ m KL
= 53+79
= 132
The measure of KM
=m KL+ m LM
= 79+68
=147
The measure of JLM
= 53+68+79
= 200
The measure of JM
=360-200
=120
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Find the slope and the y-intercept of the linear function shown below
Answer:
You give no Problem or answers to choose from
Step-by-step explanation:
Sorry
year 9 students from a school were asked to choose one language to study the table shows information about their choices LANGUAGE French students=17 German students=35 Italian students=38 Students in math class 9s1 were told to draw a pie chart to illustrate the language work out all of the angles of each sector of the pie chart
Answer:
French 17
German 35
Italian 38
total 90
French = 17/90 ×360 =68°
German = 35/90 ×360= 140°
Italian 38/90 ×360= 152°
A pet store has three fish tanks, each holding a different volume of water and a different number of fish.
Tank A holds 40 L and 5 fish. Tank B holds 100 L and 12 fish. Tank C holds 180 L and 23 fish.
Order the tanks by volume per fish from least to greatest.
B A C
Answer:
Step-by-step explanation:
Remark
The general formula is
Volume per fish = volume of water / number of fish
Givens
40 L and 5 fish
100 L and 12 fish
180 L and 23 fish
Solution
Tank A = 40 L / 5 fish = 8 L / fish
Tank B = 100 L /12 fish = 8.3 L / fish
Tank C = 180 L / 23 fish = 7.83L / fish
Answer
From Least to greatest = C A B
