solve the linear system below by substitution
x=-3y+1
3x+9y=-4
(A). (3,-4)
(B). (2,9)
(C). IMS (Infinitely Many Solutions)
(D). No Solution
Answers
Answer:
Option D
Step-by-step explanation:
x = -3y + 1
3x + 9y = -4
Substitute x;
3(-3y + 1) + 9y = -4
Distribute;
-9y + 3 + 9y = -4
3 ≠ -4
No solution
Related Questions
at a bakery, the ratio of the number of pies to the number of cakes was 8:3. What is the fraction of the number of cakes to the number of pies.
Answers
Answer:
Step-by-step explanation:
Answer:
3
---
8
Step-by-step explanation:
the ratio of cakes to pies will be 3:8 if pies to cakes is 8:3
the fraction is 3/8
Algebraic expression for three more than a number is twenty less than three times the same number write equation form
Answers
Answer:
x+3 = 3x-20
Step-by-step explanation:
3+x = 20 - 3x
More than = adding
is is equal to
Please help thank you
Answers
Answer:
y = 2x - 5
Step-by-step explanation:
If I go out to eat and my food is $20.98 and the tax is 8.6% how much would I have to pay all together?
Answers
Answer:
$22.78
Step-by-step explanation:
Cost Price: 20.98
Tax is 8.6% of this: 20.98 x 0.086 = 1.80
Total price = Cost Price + Tax:
Total = 20.98 + 1.80 = $22.78
Brainliest would be nice :)
It is estimated that 30% of households own a riding lawn mower. A sample of 12 households is studied. What is the standard deviation of the number of households who own a riding lawn mower?
Answers
Answer:
I dont knowiwdjdhkjwdhjkahdkjsa
Step-by-step explanation:
dhjddgcjkgjkjv
18 3/4 x 1 7/25 help would be awesome
Answers
Answer:
25.23
Step-by-step explanation:
As a Fraction 24
Answer:
25.23
Step-by-step explanation:
i did this question a few days ago
6. Complete the table below. In the left column, write the missing product in factored form. In the right column, write the missing sum or difference in expanded form. [4 points Factored Form Expanded Form 7(x – 3) 3 (10m + 20 12y – 9y 15x + 24y
Answers
given by Rishabh Raj
Step-by-step explanation:
you can take a answer with Google and Google is right also check with belly my accessories 95024 y follow following
Use the distributive property to remove the parentheses.
7 (u-5)
4(x+9)
3(u-8)
-7(-6u+w-4)
-5(-2u+3w-5)
-8(y-3v-6)
Answers
Answer:
7u-35
4x+36
3u-24
42u-7w+28
10u-15w+25
-8y+24v+48
Step-by-step explanation:
Artificial Christmas trees are regularly priced at $220. If you get a discount of 35%, how much will the tree cost you?
Answers
Answer:
$81
Step-by-step explanation:
Answer:
$143
Step-by-step explanation:
220/ 100 = 2.2
2.2 x 35 = 77
$220 - $77 = $143
Hope this Helps :)
At a summer camp there are 40 boys out of 70 campers what is the ratio written as a fraction in simplest form
Answers
Answer:
4/7
Step-by-step explanation:
40/70 = 4/7
Topic: Fractions
If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!
What the awnser pls help
Answers
it looks like its
1,1
Answer:
(1,1)
Step-by-step explanation:
The two lines intersect at the point (1,1). To find a point of a graph look at what x-value it is at and what y-value, then put the value in parentheses in that order, (x,y). In this graph, the point is one right and up from the origin, which is the point, (1,1).
it Given that f (x) = xsquared 2+3x+2 find f(0) the values of x for which f (x) =0
Answers
Step-by-step explanation:
f(x) = x^2 + 3x + 2
f(0) = (0)^2 + 3(0) + 2
= 2.
f(x) = 0
x^2 + 3x + 2 = 0
(x + 1)(x + 2) = 0
x + 1 = 0 x + 2 = 0
x = -1 x = -2
hence x = -1 or -2.
The volume of a cylindrical water tank is 2783π cubic feet. If the radius is 11 feet, what is the height of the tank?
Answers
Answer:
23 feet
Step-by-step explanation:
Givens
Volume = pi r^2 h
r = 11
V = 2783 pi
Solution
2783 pi = pi 11^2 * h Cancel the 2 pi's
2783 = 11^2 h Expand 11^2
2783 = 121 * h Divide by 121
2783/121 = h
h = 23 feet
140,000 = 1.4 x 105
True
O False
Answers
Answer:
this is false. hope this helps
Answer:
False.
Step-by-step explanation:
1.4 x 105 = 147 which is not 140,000
a store is having a 35 percent off sale, if the original price of the shirt is $18 what is the price of the shirt after the discount is applied (not including tax)
Answers
Ex. 35—> .35 x 18 = 6.3
Each day, Yumiko exercises by first doing sit-ups and then running. Use her data and the trend line y = 9x + 5 to estimate Yumiko’s exercise time if she runs 5 mi.
Estimate: about ______ minutes
Answers
Answer:
50
Step-by-step explanation:
Given the trend line equation :
y = 9x + 5
Exercise time if she runs 5 miles :
From the trend line equation :
y = exercise time
x = miles ran
If she runs 5 miles ; then x = 5
y = 9(5) + 5
y = 45 + 5
y = 50
A recipe calls for 5 cups of water for every cup of black beans how many cups of water should be used for 4 cups of beans
Answers
Answer:
20
Step-by-step explanation:
4*5=20
Answer:
20
Step-by-step explanation:
4 times 5= 20
Michael's family wants to sign up for a movie rental service. They have information on DVD plans from four different companies. The family plans
to watch 15 DVDs per month. Which plan is the BEST?
A. All-You-Can Watch DVD, pay $5 for each DVD, d, ordered
B. DVD-R-US pay $25 to join and $2 for each DVD, d, ordered
C. Cheap DVD, pay $20 to join and $2.50 for each DVD, d. ordered
D. DVD Land: pay $60 per month for unlimited amount of DVD rentals
Answers
Answer:
B
Step-by-step explanation:
DVD-R-US pay $25 to join and $2 for each DVD ordered
The radius of a circle is 25 what’s the diameter
Answers
So 25+25=50
Can you please find the measure of all the missing angles? Please help fast.
Answers
Answer:
17035536
Step-by-step explanation:
Answer:
Here are the answers:Make me Brainlist!
Step-by-step explanation:
1- 51 degrees
2-34 degrees
3-95 degrees
4-38 degrees
5-47 degrees
6-74 degrees
7-59 degrees
what is 17639x43
PLEASE FAST
Answers
3x 4y please let me know
Answers
Answer:
i think its 12xy but im not for sure
Step-by-step explanation:
System AAA \text{\quad}start text, end text System BBB \begin{cases}4x+16y=12\\\\x+2y=-9\end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 4x+16y=12 x+2y=−9 \begin{cases}4x+16y=12\\\\x+4y=3\end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 4x+16y=12 x+4y=3 1) How can we get System BBB from System AAA?
Answers
Answer:
i am aware that this is already answered but here is proof that the person above is correct!
Step-by-step explanation:
Answer: A), No
Step-by-step explanation:
Each table below shows the time and distance Samantha and her friends traveled on four different road trips. In which Table is there a linear relationship between time and distance?
Include explanation
Answers
Answer:
C
Step-by-step explanation:
C 160/2 = 80
240/3 = 80
400 / 5 = 80
480 / 6 = 80
C is linear
In table C, there is a linear relationship between time and distance
The correct answer is Table C
A linear relation is a relationship between distance (d) and time (t) when a distance changes over time at a constant rate.
From table A
At t = 2 hour, d = 120 miles
[tex]\frac{Distance}{Time} =\frac{120}{2}=60 miles/hour[/tex]
At t = 4 hour, d = 220 mile
[tex]\frac{Distance}{Time} =\frac{220}{4}=55 miles/hour[/tex]
The relationship between distance and time is not linear.
From table B
At t = 1 hour, d = 70 miles
[tex]\frac{Distance}{Time} =\frac{70}{1}=70 miles/hour[/tex]
At t = 2 hour, d = 150 miles
[tex]\frac{Distance}{Time} =\frac{150}{2}=75 miles/hour[/tex]
The relationship between distance and time is not linear.
From table C
At t = 2 hour, d = 160 miles
[tex]\frac{Distance}{Time} =\frac{160}{2}=80 miles/hour[/tex]
At t = 3 hour, d = 240 miles
[tex]\frac{Distance}{Time} =\frac{240}{3}=80 miles/hour[/tex]
At t = 5 hour, d = 400 miles
[tex]\frac{Distance}{Time} =\frac{400}{5}=80 miles/hour[/tex]
The relationship between distance and time is linear.
From table D
At t = 1 hour, d = 75 miles
[tex]\frac{Distance}{Time} =\frac{75}{1}=75 miles/hour[/tex]
At t = 2 hour, d = 150 miles
[tex]\frac{Distance}{Time} =\frac{150}{2}=75 miles/hour[/tex]
The relationship between distance and time is not linear.
Therefore, In Table C, there is a linear relationship between time and distance
For more information:
https://brainly.com/question/22246569
Write a generic exponential growth function A(t) that has initial value P and an annual growth rate (expressed as a decimal) of r.
Answers
Answer:
A(t) = P(1+r)^t
Step-by-step explanation:
A(t): amount after
P: initial value
t: time
r: growth as a decimal
This example shows compounding the growth once per year
Find the mean of the following set numbers 10,15,25,30,30,50,55,55,60,80
Answers
Answer:
the pattern is add 5 then addd 10
Step-by-step explanation:
look at what you typed
Answer:
The answer is 41.
Step-by-step explanation:
To find the mean you have to add up all the numbers and then divide it by how many numbers there are.
A history teacher asks six of her students the number of hours that they studied for a recent test. The diagram shown maps the grades that they received on the test to the number of hours that they studied. a. Is the relation a function? if the function if the relation is not a function, explain why not
Answers
Answer:
No
Step-by-step explanation:
No, because a function is a process in other words lets just say steps of doing stuff. It does tell that the students are doing stuff step by step.
A square tablecloth covers an area of 256 sq in it is folded in half some times until the area it covers is 8 sq in how many times is it folded
Answers
Answer:
8
Step-by-step explanation:
I solved it meantally, sorry if it’s wrong, if it is, I’ll give you the correct answers, let me know in the chat if it’s right or wrong.
Andrea has $18 to spend she spent $6.50 including tax to buy a notebook she needs to save 5.75 but she wants to buy a snack if candy bars cost $1.15 per package including tax what inequality would show the maximum number of packages that Andrea can buy love you any quality by showing your work and steps
Answers
Answer:
Andrea can only buy one snack.
Step-by-step explanation:
okay so since she had 18 dollars at first write it down. so,you would simply put $18 vertically (up) and then Andrea spent 6.50 on a notebook. write that down as well. so now under the "$18" write -6.50. that equals $11.5. but, Andrea needs to save 5.75. so, subtract that from the 11.5 that you wrote under 6.50. (a little check up right here/clarification) write $18-$6.50=$11.5 DO THIS VERTICALLY (UP) ! okay so now that you have that $11.5 written down, subtract 5.75 (for Andreas savings) $11.5-5.75= 5.75.
so you're work should look like this
$18.
$-6.50
-----------
$11.5
$-5.75
-------------
$5.75
just make sure you add the top ones like you know, the carry the one and stuff, just so she doesn't assume you copied of the internet . have a good day! i wish you the best of luck on this assignment !
A savings account pays an annual simple interest rate of 1.5%. Question 1 Part A How much interest would you earn in 1 year on $2,000?
Answers
Answer:
$30
Step-by-step explanation:
.015(2000)=30
Answer:
30
Step-by-step explanation:
