Answer:
B. It has infinite solutionsStep-by-step explanation:
Given the system of equations:
2t + w = 10 ..... 1
4t = 20 − 2w ... 2
From 1:
w = 10-2t ...3
Substitute 3 into 2 to have;
4t = 20 - 2(10-2t)
4t = 20-20+4t
4t = 4t
Let t = k
Substitute t = k into 1 and get w;
From 1: 2t + w = 10
2k + w =10
w = 10 - 2k
k can take any integers. This shows that the solution to the equation is infinite
Answer:
the answer is B jit
Step-by-step explanation:
swag style 5th form......................................................
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Math division help if can
Answer: A. 2 17 /21
Step-by-step explanation:you divide them.You change both mixed number to improper fraction.which is 236 /9 divide 28 /3.You do kcf which stand for KEEP CHANGE FLIP.YOU KEEP 236/9 and change Divide to mulipction sign and flip 28/3 to 3/28.You multiply236 /9 and 28/3 which gives u 708 /252.After that u simply it to 59 /21 .Lastly change back to mix number which is 2 17/21.
Hope it helps bye ;)
15 Points :p
Which of the following expressions would give a sequence with a first term of 2 and a common difference of 5? 2 - 5 n 2 n - 5 5 n - 3 5 n + 2
9514 1404 393
Answer:
5n -3
Step-by-step explanation:
Try n=1 in each expression and see which gives you a first term of 2.
2-5n = 2-5·1 = -3
2n -5 = 2·1 -5 = -3
5n -3 = 5·1 -3 = 2 . . . . . this is the expression you want
5n +2 = 5·1 +2 = 7
__
Additional comment
For a common difference of 5, the coefficient of n must be 5. The second answer choice fails on that count also.
Answer:
5n-3
Step-by-step explanation:
6r-5=1=8r-24 help pls
Answer:
r=9
Step-by-step explanation:
x+y=3 and x-ý=
x1 simultaneous equation
Answer:
y=1, x=2
Step-by-step explanation:
x+y=3
x-y=1
Using elimination method
x-x+y--y=3-1
2y= 2
y=1
Substitute y=1 into equation 2
x-1=1
x=1+1
x=2
Answer:
x=1!y=2 submitted that values in question u got answers see please likable
A type of green paint is made by mixing 2 cups of yellow with 3.5 cups of blue.
B : Find a mixture that will make the same shade of green but a larger amount.
Answer:
4 cups of yellow with 7 cups of blue
Step-by-step answer:
simply just double both amounts of paint and the ratios should even making the same shade of paint
Enter an algebraic equation for the word sentence. Use x as your variable.
90 is five times a number.
The equation is
Answer:
5X=90
Step-by-step explanation:
5x=90
5x=90
5 5
x=18
find the value of x if √x-5=0.
Answer:
√x=√25.......x=5
Step-by-step explanation:
√25-5=0
5-5=0
Answer:
√x-5=0
√x=5
squaring both side
√x²=5²
x=±25
Is that right? I’m not sure if I’m correct or wrong
Answer: no its one solution
Step-by-step explanation:
Given the function f described by f(z)= 3z^(2) +10z-6, find the function values.
f(-9)=
Answer:
Step-by-step explanation:
f(z)=3(-9)^2+10(-9)-6
f(z)=3(81)-90-6=243-96=147
The grizzly bear population in Yellowstone National Park in 1970 was about 270. Over the next 35 years, it increased by about 115%. What was the population in 2005?
Answer: 311 bears
Step-by-step explanation:
Population increased by 115% in the 35 years from 1970 to 2005.
Population in 2005 is:
= 270 * 115/100
= 310.5
= 311 bears
Answer:
581
Step-by-step explanation:
270x%115=310.5
We have to round 310.5 to the nearest So 310.5 will be 311
So if it increased by 115% we have to add the 115% to 270
270+311= 581
By the 2005 the population will be 581
karen purchased a DVD player on sale. The original selling price was $159.92 The sale price was $179. 30 find the percent markdown
Answer:
Step-by-step explanation:
Answer:
19.26%
Step-by-step explanation:
Given the original selling price of DVD player as $179.30 and the new sale price to be $144.77, the the first step in finding the percent markdown is to take the difference between the original selling price and the sale price to give $179.30 - $144.77 = $34.53
Percent markdown = original selling price- new sale price/original selling price × 100%
Percent markdown = $34.53/$179.30 × 100%
% markdown = 19.26%
Pleaseee help me with this!!!
Answer: The last one ([tex]8^{2}[/tex])
Step-by-step explanation:
Here’s why:
the 2 on top of the 8 is called an exponent and it means that you need the multiply 8 times itself two times (8 x 8), and if you know your times tables you know that 8 x 8 is 64 not 16
The diagonal of a rectangle is 17 units long, and one side is 15 units long.
How many units squared is the area of the rectangle?
9, 13, 14, 15, and 19 have me confused
9514 1404 393
Answer:
9. not possible
13, 14, 19. AAS — 13: WYX≅AYZ; 14: CFD≅CEB; 19: DEH≅GEF
15, 16. not possible
Step-by-step explanation:
9. You're looking for three sides, or two sides flanking a congruent angle. Here, the angle is not between the two sides, so the SAS theorem does not apply. Proving congruence is not possible.
__
13, 14, 19. You have two adjacent angles, followed by a side, so the AAS theorem will prove congruence.
When you write the congruence statement, you need to make sure the nodes are named in corresponding order. It can be useful to name the nodes in the same order as the elements you claim for congruence. For these, we name the two angle nodes first, then the other end of the side.
13: WYX≅AYZ; 14: CFD≅CEB; 19: DEH≅GEF
__
15, 16. With only one angle and one side, it is not possible to prove congruence.
_____
Additional comment
With these theorems, you are looking for angles or sides that are adjacent (next to each other). In figure 9, there are two sides and an angle, so you might be tempted to claim SAS congruence. The name SAS means the angle must be between the two sides. In that figure, the two sides are adjacent, and the angle is adjacent to only one of the sides (not between them). Hence SAS does not apply.
(You will find later that two sides and a non-adjacent angle will define a unique triangle if, and only if, the angle is opposite the longest of the two given sides. In figures like these, no side lengths are given, and you are not allowed to rely on appearances.)
What is the value of x in this equation?
2x + 2 = -52
Record your answer and fill in the bubbles on your answer document. Be sure to use the
correct place value.
The above equation equals -27
Every recurring decimal is
Answer:
Every repeating or terminating decimal is a rational number
Each repeating decimal number satisfies a linear equation with integer coefficients, and its unique solution is a rational number.
can someone help me pls 10 points
Answer:
3/5
Step-by-step explanation:
Slope = rise/run = (4-1)(1- -4) = 3/5.
please help me before i fail!!! Without using a calculator, order the following expressions from least to greatest
√20, 11/3, √17
A. 8
B. 12
C. 2
D. 4
I don’t know this please help
Answer: I think it’s 8
Step-by-step explanation: because it can’t be the other ones
A rectangular swimming pool has a base of 200 square feet. The pool has a depth of 5 feet. What is the volume of the pool?
Answer:
200 X 5 = 1000 square feet
Step-by-step explanation:
V = L x W x H
Answer:
1,000
Step-by-step explanation:
Write an equation that can be used to fine the value of x. perimeter of a triangle:20 in PLS HELP ME I NEED A ANSWER HELP
Answer:
20 divided by 4
Step-by-step explanation:
because 5 times 4 is 20
Ulani is constructing a triangle that has sides measuring 12 cm and 28 cm. Which measurements could be the length of the third side? Select two options.
Answer:
16 < n < 40
Step-by-step explanation:
use triangle inequality theorem:
n = length of third side
12 + 28 > n; n > 40
12 + n > 28; n > 16
n + 28 > 12 (this inequality can be discounted because it results in a negative)
Will give the brainliest, please help me and correct answers:
So I have to work out the area of a parallelogram but I’m confused on which is the base, the height can be inside and outside as well so is 5cm the base while 7cm the height right?
Answer:
Right, 6 cm is the height. 5 cm is the base
Step-by-step explanation:
Help, I need to know the area of this.
Answer:
300ft^2
Step-by-step explanation:
please help (picture above)
Answer:
y= 45
x=9
Step-by-step explanation:
plug 5x into y since y=5x:
5x=4x+9
-4. -4
x=9
5(9)=45
Answer:
x=9 y=45
Step-by-step explanation:
y=4x + 9.......(1)
y= 5x.........(2)
Substitute 5x for y in equation 1.
5x= 4x + 9
5x - 4x = 9 (Collect like terms 5 and 4 have x in common if +4 crossover it changes to -4)
x = 9
substitute 9 for x in equation 2.
y = 5(9)
y = 5 x 9(multiplication)
y = 45
James works in a flower shop. He will put 48 tulips in vases for a wedding. He must use the same number
of tulips in each vase. The number of tulips in each vase must be greater than 1 and less than 10.
How many tulips could be in each vase?
Answer:
5
Step-by-step explanation:
During its first year, there were 138 volunteers at a community outreach program. Over the next 2 years, there were 156 volunteers and 175 volunteers, respectively. What is the percent of increase in volunteers from Year 1 to Year 2 and from Year 1 to Year 3? Round to the nearest tenth percent if necessary.
Answer:
0.1%
Step-by-step explanation:
138 into a percent=1.38%
156 into a percent=1.56%
175 into a percent=1.75%
1.38-1.56=0.18
1.56-1.75=0.19
0.19-0.18= 0.1%
The increase in volunteers from year 1 to year 2 is 13.04 % and the increase from year 1 to year 3 is 26.81 %.
PercentageThe percentage can be defined as a relative value that represents the hundredth part of any quantity.
Given that the number of volunteers in a program during year 1, year 2 and year 3 are 138, 156 and 175 respectively.
The percentage of increase in volunteers from year 1 to year 2 is given below.
Volunteers (%) = [tex]\dfrac {156-138}{138} \times 100[/tex]
Volunteers (%) = 13.04%
The percentage of increase in volunteers from year 1 to year 3 is given below.
Volunteers (%) = [tex]\dfrac {175-138}{138} \times 100[/tex]
Volunteers (%) = 26.81 %
Hence we can conclude the increase in volunteers from year 1 to year 2 is 13.04 % and the increase from year 1 to year 3 is 26.81 %.
To know more about the percentage, follow the link given below.
https://brainly.com/question/8011401.
Maria's bill for lunch was $12.25. How much would her tip be if she leaves a 20% tip?
Answer:
$2.45
Step-by-step explanation:
First, we find how much 20% of 12.25 is:
we can convert 20% directly to a decimal:
20% = 0.2
Then we find
20% of 12.25 = 0.2 x 12.25 = 2.45
So Maria's tip would be $2.45
Pls help me with this picture included find the 30th term
I think the answer is 62 ? I have never seen this kind of math?
Answer:
The answer is 143
Step-by-step explanation:
Because if you subtract 152-149 it equals 3 and same with 149-146 so it means that the sequence is going down by 3 each time. Hope that helps!
please help, can't understand.
Step-by-step explanation:
Angle ACO = 140° - x. (Sum of angles in a triangle is 180°)
Now draw the line OD. The triangles ODC and OBC are congruent via the SSS congruence property. (OD and OB are both the radius of semicircle, common side OC, and side CD = CB is given)
Hence Angle BCO = Angle ACO = 140° - x.
Since triangle OBC is an isosceles triangle with OC = OB, this means that Angle CBO is also 140° - x.
By Exterior Angle theorem,
we have Angle AOC = Angles BCO + CBO
=> x = (140° - x) + (140° - x)
=> 3x = 280°
=> x = 280°/3. (B)