Solve the system of equations by elimination.
2x - 9y = 23
5x - 3y = -1
*Be sure to enter your answers as a point
Answer:
Step-by-step explanation:
1. 2x - 9y = 23
2 x = 9 y + 23
y = (2 x)/9 - 23/9
2 x - 9 y - 23 = 0
2. 5x - 3y = -1
5 x + 1 = 3 y
y = (5 x)/3 + 1/3
5 x - 3 y + 1 = 0
I belive that should help you out a bit :D
Answer:
(x,y) = (-1/5 + 3v/5, -13/5+2v/15)
Step-by-step explanation:
What is the distance between points A and B? Use absolute value to explain your answer.
Answer
(1,2)
Step-by-step explanation:
Answer:
6,3
Step-by-step explanation:
help please!!!!!!!!!!!! i will give brainliest for right answer!!!! Question is on image below.
Answer:
x=12
Step-by-step explanation:
Because they are similar triangles you can set up proportions. 12/18=8/x Then you solve that and get 12.
Write an equation to describe the relationship between a and b.
Answer:
I think the answer would be :
b = 0.375 a
Hope it was helpful for you ^^ .
jo scroed 1324 points the entire season if she scored 17% of her points during the tournament how many points did she score during ht tournament
Answer:
225.08, which would just be 225.
Step-by-step explanation:
First, you multiply the percent, 17, times the total number of points, 1,324, which you should get 22,508. Then, divide that by 100, and you will get your answer 225.08. The reason you put it into the whole number, is because you can't score part of a point, so you always round down even if the number is in favor to round up. I hope this helps :)
Can someone help me with this one?
after how many audio books will both book clubs cost the same amount.
Answer:
2 books
Step-by-step explanation:
10 + 5x = 16 + 2x
- 2x - 2x
10 + 3x = 16
-10 -10
3x = 6
/3 /3
x = 2
((7848 ? 36) ? 213) ? 40 = 200
A circle has a cincumarence of 907.46 units,What is the diameter of the circle?
Answer:
C=pi x diameter
diameter=C/pi
I dont know what your teacher wants in terms of pi but lets use 3.14 and π
907.46/3.14=289.0 units
907.46/π=288.85
Multiply the complex numbers:
1: (1 - 4i)(3 - 3i)
2: (2 + i)(3 + 3i)
3: (-7i)(7i)(-7 - 8i)
Answer:
Step 1
Step 2: Simplify the powers of i, specifically remember that i2 = –1.
Step 2
Step 3: Combine like terms, that is, combine real numbers with real numbers and imaginary numbers with imaginary numbers.
Step 3
Answer:
Step-by-step explanation:
1:-9 - 15 i
2: 12 + 6 i
3: -343 - 392 i
Please help! I have been working for hours and I-
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
40 points!~
Answer:
7 is C
8 is B
9 is C
Step-by-step explanation:Focus on your class please
Answer:
1. C
2. A
3. C
Step-by-step explanation:
Plz I really need help with this problem
Answer:
The area of the shaded portion is 450.185 in^2
Step-by-step explanation:
21^2+20^2=841
The square root of 841 is 29
29+20+21=70
70*1/2=35
35-29=6
35-21=14
35-20=15
The square root of 35*6*14*14=210
The area of the triangle is 210 in^2
The diameter of the circle is 29, so the radius is 14.5
14.25^2=210.25
210.25*3.14=660.185
660.185-210=450.185
PLEASE HELP
Your friend is looking at laptops for
college, and is comparing the different
screen sizes. If a laptop has a height of 6
in and a diagonal of 17.5 in, use the
formula below to find the width of the
laptop screen. Round your answer to the
nearest tenths place
17.5 = √6² + w²
17.5² = 36 + w²
306.25 = 36 + w²
270.25 = w²
√270.25 = w
16.4392822 = W
= w = 16.44 in
In a soccer game, sending the goalie up on a corner kick sometimes results in a goal and gives the team a one man advantage. Assume soccer teams do this about 20% of the time. Of the times that teams send a goalie up, 30% result in that team scoring in the next 40 seconds of the game. On the other hand, 10% of the times that teams do not send a goalie up for a corner kick results in that team scoring in the next 40 seconds of the game. A sports statistician wants to know the probability of a team sending a goalie up and scoring within 40 seconds. What is this probability?
Answer:
90% chance
Step-by-step explanation:
they need an extra man to help for the last point
Don’t mind my answer if that was an accident but please hurry I need help
Answer: 882
Step-by-step explanation:
75% is the same as 3/4.
You would divide the total number of customers 1176 by 4 to find 1/4 then times by 3 to find 3/4 or 75%.
1176 divided by 4 = 294
294 times 3 = 882
Joanna earns $12 per hour at her job. Last week, joanna earns $432 use this information to answer the next questions.
The given question is incomplete. The complete question is:
Joanna earns $12 per hour at her job. Last week, joanna earns $432
use this information to answer the next question. Which equation can be used to determine the number of hours Joanna worked last week.
a. h+ 12 = 432
b. 432 h =12
c. 12 h = 432
d. [tex]\frac{1}{12} h=432[/tex]
Answer: c. 12 h = 432
Step-by-step explanation:
Given : Amount paid per hour = 12 $
12 $ are earned by Joanna by working for = 1 hour
Thus 432 $ are earned by Joanna by working for = [tex]\frac{1}{12}\times 432hour=36hours[/tex]
Thus the equation that can be used to determine the number of hours Joanna worked last week is [tex]12\times h=432[/tex]
Describe how to graph the line y=2/3x+5
Simplify (6 x r) x 7
Answer:
42x7r is your answer ☺️☺️☺️
Im so sorry yall!!!!!
What equivalent fractions for 2 3/5 and 1 1/3 using a common denominator
Answer:
The common denominator is 15.
2 3/5 = 13/5 = 39/15
1 1/3 = 4/3 = 20/15
Answer:
39/15 and 20/15
Step-by-step explanation:
Given function:
2 3/5 and 1 1/3to find the equivalent fraction for both fraction using common denominator..Rewrite 2 3/5 and 1 1/3 by a number that is equivalent to 5 and 3:
[tex]5,10,15[/tex] [tex]3,6,9,12,15[/tex]Multiply each numerator by how much times it turned into 15:
[tex]3[/tex]·[tex]3=9[/tex] [tex]1[/tex]·[tex]5=5[/tex]Simplfly the fraction terms:
[tex]2\frac{9}{15}=\frac{39}{15}[/tex] [tex]1\frac{5}{15}=\frac{20}{15}[/tex]Therefore, 39/15 and 20/15 is equivalent to 2 3/5 and 1 1/3.
the original price of an item is $80. what is it's selling price after the store adds a markup on 60%
Answer
$128
Step-by-step explanation:
Okay well if $80 is 100% then 60% is 48 dollars.
so 80 +48=128
Bobby earns $72 for the day and $6 for each delivery he makes. He wants to make $150 in work day. How many deliveries must Bobby make to reach his goal?
Answer:
He needs to make 13 deliveries
Triangle ABC is similar to triangle A'B'C'. Calculate the length of side A'B'. Then check your
answer using a different method.
Answer:
A'B' = 7.5
Step-by-step explanation:
uhhh
AC = A'C'
4 = 6
×1.5
AB^2 = 4^2 + 3^2
AB^2 = 16 + 9
AB^2 = 25
AB = √25
AB = 5
A'B' = 5 × 1.5 = 7.5
The value of A'B' for the given congruent triangle will be 7.5.
What is congruence?If two figures are exactly the same in sense of their side of all things then they will be congruent.
If it is possible to superimpose one geometric figure on the other so that their entire surface coincides, that geometric figure is said to be congruent or to be in the relation of congruence.
As per the given congruent triangle,
In triangle ABC,
AB = √(3² + 4²) = 5
The ratio of the corresponding sides of the two triangles is the same.
A'B'/A'C' = AB/AC
A'B'/6 = 5/4
A'B' = 30/4 = 7.5
Hence "The value of A'B' for the given congruent triangle will be 7.5".
To learn more about congruence,
https://brainly.com/question/12413243
#SPJ2
What is the exact circumference of a circle with a radius of 12 inches ?
6 in.
12 in.
24 in.
48 in.
Answer:
24 inches
Step-by-step explanation:
Circumference: 2π×12= 24π
:)
Answer this - 3 - 3 (+2)
Answer:
-3-6= -9
.......................
Answer:
if you mean -3-3 +2 then it is -4
if you mean -3-3(2) then it is -9
Step-by-step explanation:
The area of a rectangle is 20x2 - 27x- 8.
The length is 4x + 1. What is the width?
Answer:
5x - 8
Hope it helped :)
Answer:
5x-8
Step-by-step explanation:
im assuming you mean 20x^2 instead of 20x2 bc when you copy and paste it usually gets rid of the "^".
the area of a rectangle is length*width
so, to find the width, we have to solve the equation (4x+1)*width=20x^2-27x-8
the goal is to find (20x^2-27x-8)/(4x+1)
there is many ways to solve this: long division, synthetic division (easiest way)
but I'll just do guess and check
we know that the answer is in the form ax+b
we also know that b*1=-8 bc that's just how foiling works
We also know 4a=20
so, the answer is 5x-8
obviously you can check this answer if you are unsure of it being correct
(4x+1)(5x-8) = 20x^2-32x+5x-8 = 20x^2 - 27x - 8
so it does work
help me, will give money at this point.
Answer:
3a- 4/9
3b- 2/9
3c- 0/9
4a- it is unlikely to take the bus
4b- the show is gonna be on tonight.....or certain to happen
4c- there is a even chance of flipping tails
4d- i would say it is an even chance or unlikely
4e- likely to have milk
Step-by-step explanation:
A theoretical probability is the probability of an event to have or you could say number of outcomes over number of total possible outcomes
Which measurements are greater than 134 inches?
Answer:
C 4 yards
Step-by-step explanation:
random guess sorry.
Answer:
A is the answer!
Step-by-step explanation:
134 inches is equal to 3.7 yards
134 inches is equal to 11.1667 feet.
need help asap will give brainly
Javon spent %687 on pokemon cards. Energy cards cost $6 and dragon cards cost $5. If he bought a total of 127 packs then how many of each did he buy
Answer:
Javon purchase Energy cards = 52
Javon purchase Dragon cards = 75
Step-by-step explanation:
Given - Javon spent $687 on pokemon cards. Energy cards cost $6
and dragon cards cost $5.
To find - If he bought a total of 127 packs then how many of each did he buy ?
Proof -
Let Javon purchase Energy cards = x
Javon purchase Dragon cards = y
Now,
Given that he bought a total of 127 packs
⇒x + y = 127
Also,
Cost for 1 Energy card = $6
⇒Cost of x Energy cards = $ 6x
And
Cost of 1 Dragon card = $5
⇒Cost of y Dragon card = $ 5y
Now,
Given that Javon spent $687 on pokemon cards.
⇒6x + 5y = 687
∴ we get
x + y = 127 ..................(1)
6x + 5y = 687 .................(2)
Multiply by 6 in equation (1) , we get
6(x + y) = 6(127)
⇒6x + 6y = 762 .................(3)
Now,
Subtract equation (2) from equation (1) , we get
6x + 6y - (6x + 5y )= 762 - 687
⇒6x + 6y - 6x - 5y = 75
⇒y = 75
Now,
Put the value of y in equation (1), we get
x + 75 = 127
⇒x = 127 - 75
⇒x = 52
∴ we get
Javon purchase Energy cards = x = 52
Javon purchase Dragon cards = y = 75