Solve the simultaneous equations
2x - 3y = 18
5x + 9y = -10
Answers
Answer:
2x - 3y = 18 (1)
5x + 9y = -10 (2)
<=>
Multiply both sides of (1) by 5, and multiply both sides of (2) by 2, then:
10x - 15y = 90
10x + 18y = -20
Subtract (2) to (1):
=> 33y = -110 => y = -110/33
Substitute y back into (1):
=> 2*x - 3*(-110/33) = 18
=> 2*x + 10 = 18
=> 2*x = 8
=> x = 4
=> Solution: x = 4, y = -110/33
Hope this helps!
:)
Answer: x=4 y= -10/3
Step-by-step explanation:
Look at the attachment. It should explain.
Related Questions
Melanie works at the local animal shelter after school. The table below shows how much money she earned and the number of hours she worked. How much does Melanie earn per hour? A) $16.00 B) $4.00 C) $8.00 D) $32.00
Answers
This problem shows division without a remainder.
Answers
Step-by-step explanation:
quotient is 40 and remainder is 8
7th grade math I'll give brainliest
Answers
Answer:
Step-by-step explanation:
Rise over run is the slope, m
m=2/5
a) the slope is 2/5 = .4 which is below the boundary guideline. So no this is not with in carpenter's guidelines
b) the image below show a line with slope 2/5 but with intercept 3
c) the stairs can be draw on the line with rise 2 run 5 from the line. see image
d)equation is in image
2.
a) count the squares
horizontal distance =3
vertical distance =3
b) slope is vertical distance over horizontal distance so m= 3/3 =1
Show how to write each of the following as a numerical expression then find the value of the expression.
Answers
Answer:
A. 7+ ( 11-3)^5
B.4^5 - 6^2
Step-by-step explanation:
Hope this helps. Consider making me brainliest!
B: 4^5-6^2
5TH GRADE MATH! HELP! What is written in standard form? A. 0.8 B. 0.871 C. 871 D. 8,710
Answers
Answer:B
Step-by-step explanation:
Answer:
0.871.
Step-by-step explanation:
if you divide 1/10 you get 0.1 and then you multiply it by 8 and you get 0.8
then you divide 1/100 and you get 0.01 then you multiply it by 7 and get 0.07
then you divide 1/1,000 and you get 0.001 then you multiply it by 1 and get 0.001 Now you add them together and get 0.8 + 0.07 + 0.001 = 0.871
The table below shows the ratio of materials in a composting container.
Brown Material (gallons) 12.75 18.6 24 E
Green Material (gallons) 4.25 B D 11.5
Total (gallons) A C 32 46
If Jeremy needs 64 gallons of compost to plant his garden in the spring, how much brown material will he need? How much green material will he need?
Jeremy will need 52 gallons of brown material and 12 gallons of green material.
Jeremy will need 16 gallons of brown material and 48 gallons of green material.
Jeremy will need 12 gallons of brown material and 52 gallons of green material.
Jeremy will need 48 gallons of brown material and 16 gallons of green material.
Answers
Answer:
Step-by-step exp6lanation:
PLEASE I NEED HELP ASAP!!!
SHOW ME HOW YOU GOT YOUR ANSWER
Answers
Which of the following is NOT between -7 and -4 on the number line?
-7.2
-4.8
-6
-5.01
Answers
Hi,
-7.2 is NOT between -7 and -4 on the number line.
✅(•‿•)
Write the decimal as a fraction.
Please help ASAP!!♡
Answers
Answer:
8.33 repeating=25/3
Step-by-step explanation:
8 1/3
8.3333 with 3 repeating
Brianna went shopping for a new video game because of a sale. The store was offering a 15% discount. If the price on the tag was $23, what would be the price after the discount but before tax, to the nearest dollar and cent?
Answers
Answer:
Is it going to be $19.55?
Step-by-step explanation:
Answer:
The answer I got is $3.45, don't know if it's correct, I think the guy above me might be right tho-
A construction worker drew a sketch he will use as he works.
Which statement is not true?
A. The distance from the ground to the pipe is 2.5 feet.
B. The distance between the pipe and the rope is 1 foot.
C. The distance between the ground and the rope is 5 feet.
D. The distance from the ground to the pipe is 1 foot less than the distance from the ground to the rope.
Answers
The circumference of a circular park is approximately 18 feet. What is the approximate area inside the circular park?
Answers
Answer:
25.685 square feet.
Step-by-step explanation:
Circumference = 2 * π * radius
From this, we can derive the formula for the radius:
radius = Circumference / (2 * π)
Let's substitute the value of the circumference and calculate the approximate radius:
radius = 18 / (2 * π)
radius ≈ 18 / (2 * 3.14159)
radius ≈ 2.865 feet
Now that we have the approximate radius, we can calculate the area:
Area ≈ π * radius²
Area ≈ 3.14159 * (2.865)²
Area ≈ 3.14159 * 8.193225
Area ≈ 25.685 square feet
Therefore, the approximate area inside the circular park is approximately 25.685 square feet.
C = 2πr
where C is the circumference and r is the radius of the circle.
In this case, we are given that the circumference is approximately 18 feet, so we can set up the following equation:
18 = 2πr
Solving for r, we get:
r = 9/π ≈ 2.864 feet
Now we can use the formula for the area of a circle:
A = πr^2
Substituting the value we found for r, we get:
A = π(2.864 ft)^2 ≈ 25.85 ft^2
Therefore, the approximate area inside the circular park is approximately 25.85 square feet.
HELPP PLEASE LOOK AT IMAGE
Answers
Answer:
33.3%
Step-by-step explanation:
There are 3 sections the spinner can land on, and only one meets the requirement (less than 3, so the 2 section is the only one). Therefore the chance of landing on 2 is 1/3, or 0.333...... which can be converted into percentage by multiplying it by a hundred.
-0.333..... x 100 = 33.33333....
If this helped, please consider picking this answer as the Brainliest Answer. Thank you!
What is the value of x?
Enter your answer in the box. Round only your final answer to the nearest hundredth
Answers
Answer:
x = 12.5 yd
Step-by-step explanation:
To find the value of x, use the equation below
cos 37 = \(\frac{10}{x}\)
0.80 = \(\frac{10}{x}\) Take 10 divided by 0.80 to find x
x = 12.5
If this answer is correct, please make me Brainliest!
x=25 what is the value of 5x-5
(Please explain it with proces)
Thank you
Answers
Answer:
120
Step-by-step explanation:
5x-5
Let x = 25
Substitute into the expression
5(25) - 5
Multiply
125 -5
Subtract 120
Answer:
120
Step-by-step explanation:
If X = 25
where you see X , you put 25 there
5X - 5
5(25) - 5
125 - 5
= 120
What is the surface area?
Use this formula- A= 1/2 bh
Answers
Answer:960 m is the right answera
Step-by-step explanation:
after doing it with the given formula the answer will be 960
PLS HELPP
A shipment of 8 tons of sugar is separated into containers of equal size. If the shipment fills 3 and 1/3 of containers, how much sugar can one container hold?
Write your answer as a mixed number in simplest form.
Answers
Answer:
1 1/9
Step-by-step explanation:
The question is in picture below :
Answers
Answer 3- -38
Answer4- 228
-40, -20 and -60 tells me that these numbers are negative.
Hike 3 Final Elevation: -38
Hike 4 Elevation Change: 225
Hike 5 Open Response: -20 tells us the beginning elevation of the hike. -60 tells us the final elevation of the hike. -40 tells us the change between the initial and final elevation.
Calculate the area of the fortune cookie.
( look at picture for information ) ( DONT answer part A question i already did that part)
A. 1 5/8 square inches
B. 1 25/16 square inches
C. 1 9/16 square inches
D. 1 25/16 square inches
Answers
Answer:
C
Step-by-step explanation:
2 1/2 × 5/8
5/2 × 5/8 = 25/16
25/16 = 1 9/16
so I think it's C
Answer:
25/16 or 1 9/16 as a mixed number
Step-by-step explanation:
Turn 2 1/2 into an improper fraction and multiply by 5/8
Valencia climb 25 feet up a rock wall and then climbs 12 feet down to a landing area. The number of feet Valencia climbs can be represented using the expression |25| + |-12|. How many feet does Valencia climb?
Answers
Answer:
37
Step-by-step explanation:
\( | - 12| = 12\)
the absolute value is always positive. imagine it as "how much away from zero"
Find the slope of the graphed line please.
Answers
Answer: -1/2
Step-by-step explanation: Rise over run.
ANSWER THIS CORRECTLY TO BE BRAINLIEST
Answers
Answer:
Q6. -5/2
Q7. -7/24
Q8. 127/24
Q9. 151/12
Step-by-step explanation:
Q6. (−3/4)+(−7/4) = -3-7/4 = -10/4 = -5/2
Q7. 3/8 - 2/3 = 3*3/8*3 - 2*8/3*8 = 9/24 - 16/24 = 9-16/24 = -7/24
Q8. 18+2/3 - 8+3/8 = 20/3 - 11/8 = 20*8/3*8 - 11*3/8*3 = 160-33/24 = 127/24
Q9. 12+1/4 + 27+1/3 = 13/4 + 28/3 = 13*3/12 + 28*4/12 = 39 + 112/12 = 151/12
9 : 32 1/3
PLEASE I REALLY NEED HELP IT'S DUE SOON AND IM VERY CONFUSED!!!!
Answers
Answer:
D
Step-by-step explanation:
if im correct the answer is D
Answer:
C
Step-by-step explanation:
Write the inequality:
3 less than n is no more than -8
Answers
Answer:
n - 3 ≤ -8
Step-by-step explanation:
n - 3 ≤ -8
3 less than n: n - 3
is no more than: ≤ - 8
Find the volume of this prism, please
A
35 cubic inches
B
144 cubic inches
C
420 cubic inches
D
432 cubic inches
Answers
Answer:
C
420 cubic inches
Step-by-step explanation:
multiply all three together to get volume
hey can you help, please
Answers
Answer:
C is the answer I did this and got it right.
Step-by-step explanation:
(plsss give brainliest T-T)
Answer: I got C as an answer
A fruit juice recipe calls for 2 parts orange juice and 8 parts pineapple juice. Which proportion can be used to find the amount of orange juice, j, that is needed to add to 18 L of pineapple juice?
2 over 8 equals j over 18
8 over 2 equals j over 18
8 over j equals 2 over 18
16 over 18 equals j over 100
Answers
The correct proportion to use to find the amount of orange juice, j, needed to add to 18 L of pineapple juice is:
2/8 = j/18
This proportion relates the ratio of orange juice to pineapple juice in the recipe (2:8) to the amount of orange juice needed to add to 18 L of pineapple juice. By cross-multiplying, we can solve for j as follows:
2/8 = j/18
218 = 8j
36 = 8*j
j = 36/8
j = 4.5
Therefore, you would need to add 4.5 L of orange juice to 18 L of pineapple juice to create the fruit juice recipe that calls for a ratio of 2 parts orange juice to 8 parts pineapple juice.
Answer:
2 over 8 equals j over 18Step-by-step explanation
2 over 8 equals j over 18
This proportion represents the ratio of orange juice to pineapple juice in the recipe. By setting up the proportion, we can solve for the value of 'j,' which represents the amount of orange juice needed.
So, the correct proportion is:
2 over 8 equals j over 18
What is the domain and range of:
Answers
Answer:
b
Step-by-step explanation:
how it works with life
Which net represents the three-dimensional figure shown on the right? Will give brainliest!
Answers
Answer:
Looks like the top left
Answer:
It's the 1st one from the left!
Step-by-step explanation:
Ariana was looking at rent costs for 555 apartments. Each rent was a different amount between \$1{,}000$1,000dollar sign, 1, comma, 000 and \$1{,}400$1,400dollar sign, 1, comma, 400 per month, except for one apartment whose rent was \$4{,}800$4,800dollar sign, 4, comma, 800 per month. [Show data] Ariana looked at the mean and median of the rents. Then, she decided to remove the \$4{,}800$4,800dollar sign, 4, comma, 800 rent from the set and recalculate the mean and median. How will removing this rent affect the mean and median?
Answers
Answer:
tough one
Step-by-step explanation:
sorry goodluck