1.Refer to the system of linear equations shown below. Which of the following statements gives the best choice for multiplying to solve this system using the elimination method?
3x−6y=4
6x+11y=−2
(1 point)
Multiply the second equation by 12, so the x-variables are eliminated.
Multiply the first equation by 2, so the x-variables are eliminated.
Multiply the first equation by −11 and the second equation by 6, so the y-variables are eliminated.
Multiply the first equation by −2, so the x-variables are eliminated.
2.Given the following system, what should the second equation be multiplied by so that x is eliminated?
4x−y=9
x+3y=12
(1 point)
13
−4
−13
4
3.Solve the following system by the elimination method.
4x−2y=16
3x+6y=−18
(1 point)
(1, −5)
(3, −2)
(2, −4)
(0, −3)
4.Solve the system by the elimination method.
3x−5y=4
−9x+3y=−24
(1 point)
(8, 4)
(1, −1)
(3, 1)
(2, −2)
5.Manny says he should multiply the first equation in the system of equations below by 3 and the second equation by 2, then add to eliminate x. Is there a more efficient way to solve this system? Explain your answer.
−2x+y=15
3x+4y=−12
(1 point)
No, there isn't a more efficient way to solve this system.
Yes, a more efficient way is to multiply the first equation by 4, add to eliminate y, then solve for x.
Yes, a more efficient way is to multiply the first equation by −4, add to eliminate y, then solve for x.
Yes, a more efficient way is to multiply the first equation by −4, add to eliminate x, then solve for y.
Answer:
456
Step-by-step explanation:
Step-by-step explanation:
(1 point)
No, there isn't a more efficient way to solve this system.
Yes, a more efficient way is to multiply the first equation by 4, add to eliminate y, then solve for x.
Yes, a more efficient way is to multiply the first equation by −4, add to eliminate y, then solve for x.
Yes, a more efficient way is to multiply the first equation by −4, add to eliminate x, then solve for y.
22 Simplify the expression below. 9 (-2-8) + (-16)
Working alone, it takes Trevon eight hours
to pick forty bushels of apples. Brenda
can pick the same amount in 10.8 hours.
Find how long it would take them if they
worked together.
Answer
18.8 if they are picking 80 bushes and 9.4 if their
picking the forty bushes together
Step-by-step explanation:
Pleaseeeeeeeeeee help :)
Answer:
12: 21 16:28
Step-by-step explanation:
4 pounds are equal to 7 packs. 4x3=12, and 7x3=21, and so on.
What is the above strategy of investing called?
Answer: Hope this helps, these are some tips for investing and the different types of them definitions.
Step-by-step explanation:
Take Some Notes
Strategy 1: Value Investing
Strategy 2: Growth Investing
Strategy 3: Momentum Investing
Strategy 4: Dollar-Cost Averaging
Elena has $80 in a savings account. The interest rate is 5% per year and 1 point
is not compounded. How much Interest will she have in 2 years?
Solve 11 < 3x+8 < 20.
Answer:
1<x<4
Step-by-step explanation:
this helps me out a lot in my math class
Answer:
x=4 and thats your answer thanks for helping you but if using the z-score it's 0
Step-by-step explanation:
1<x<4
x divided by 39 = 1204 R38
Answer:
x=46994
Step-by-step explanation:
Just do 1204 38/39 * 39 to get x=46994
compare the 2's in the number 212,453 use a complete sentence
Answer: the 2 at 200,000 is 100 times more than the 2 at 002,000
Step-by-step explanation:
Answer:
The 2 at the beginning of the number is in the hundred thousands place while the other 2 is in the thousands place.
Step-by-step explanation:
Starting at the number on the far right, you go up in place value to the left.
212,45(3) - ones
212,4(5)3 - tens
212,(4)53 - hundreds
21(2),453 - thousands
2(1)2,453 - ten thousands
(2)12,453 - hundred thousands
The sum of the measures of the interior angles of a polygon is known to be
between 2100 and 2200. How many sides does the polygon have?
Answer: 5 sides
Step-by-step explanation:
The rain gauge at the airport showed 22 inches of rain in April. Which of these is the SAME as 22 inches?
Answer:
24
Step-by-step explanation:
First things first you multiply 22inches of rain times 22 and that is how you get 24
Find the 57th term of the following arithmetic sequence.
5, 14, 23, 32,
Answer:
509
Step-by-step explanation:
formula
L = a + (n - 1)*d
Givens
n = 57
a = 5
d = 9
Solution
t = 5 + (57 - 1)*9
t = 5 + 56*9
t = 5 + 504
t = 509
t = 556
please help me asap please
Answer:
1. choice number 3
2. choice number 1
3. choice number i dont know
Step-by-step explanation:
Use operations of exponent to simplify
3^5/3^-6
Answer:
[tex]\displaystyle \frac{3^5}{3^{-6}}=3^{11}[/tex]
Step-by-step explanation:
Properties of Exponents
They can be used to simplify expressions of the form
[tex]b^x\cdot b^y=b^{x+y}[/tex]
[tex]\displaystyle \frac{b^x}{b^y}=b^{x-y}[/tex]
The last property will be used to simplify:
[tex]\displaystyle \frac{3^5}{3^{-6}}=3^{5-(-6)}=3^{5+6}=3^{11}[/tex]
[tex]\mathbf{\displaystyle \frac{3^5}{3^{-6}}=3^{11}}[/tex]
Kevin wants to plant grass in his backyard. His backyard is in the shape of a rectangle. Its length is 28 feet and its width is 25 feet. Suppose each pack of seed
covers 14 square feet. How many packs of seed will he need to cover the backyard?
Answer:
50 packs.
Step-by-step explanation:
Given the following data;
Length = 28 feet
Width = 25 feet
Pack of seeds = 14 ft²
Since Kevin's backyard is a rectangle, we would find its area.
Area of rectangle = length * width
Substituting into the equation, we have;
Area of rectangle = 28 * 25
Area of rectangle = 700 ft²
Now to find the amount of pack of seeds required to cover the backyard.
Amount of pack of seeds = 700/14
Amount of pack of seeds = 50 packs.
need this by today! Pls help! Im desperate! I will give correct anwser brainliest!
Please help as soon as you can! Which of the following inequalities matches the graph?
(A) x> 4
(B) x< 4
(C) y > 4
(D) y < 4
Answer:
i believe the answer is B
please help me!!!!!!
Answer:
y = 28, 16 , 4 , -8 , -20
Hope this helps.
A number is chosen at random from 1 to 50. Find the probability of selecting factors of 36.
Answer:
1/50 2%
Step-by-step explanation:
1 divided by 50
10 - 3 (z - 2) = 5z + 7
Answer:
= 9/8
That's the answer
ANSWER FAST PLZ
find the height of a cone with a diameter of 12m whose volume is 113m3
A.2m
B.1m
C.9m
D.3m
Answer:
I'm pretty sure it's 3
Step-by-step explanation:
h=3(V/πr2)
I just plugged it into this equation
help
plz (A) 4.00
(B) 0.25
(C) 1.00
(D)0.10
Answer:
0.25
Step-by-step explanation:
2.00÷8=0.25 and the rate keeps going constant at a rate of 0.25
Paul and Kristen have planned a long hike. They will both travel the same route and will not stop. Paul starts two hours before Kristen. He walks three miles per hour and does not slow down or speed up. If Kristen walks four miles per hour, and does not slow down or walk faster, how many miles must she walk to catch up with Paul?
Answer:
Kristen should walk 12 miles to catch up with Paul
Step-by-step explanation:
Paul = 2hrs earlier
= walks at 3 miles per hour
= 3miles x 2 hrs = 6 miles
covers 6 miles at the time Kristen starts
Kristen = 4 miles per hour
Paul has a lead of 6 miles.
if Kristen walks another hour of 4 miles she would have covered 8 miles and Paul would have covered 9 miles and if Kristen were to cover one more hour,
Kristen would be at 12 and so would Paul.
Kristen should walk 12 miles to catch up with Paul
What is the value of n in this equation?
7^6·7^3=7^n
Answer: n = 9
Step-by-step explanation:
first, we calculate the first equation.
7^9 = 7^n
then, we set the exponents as equal.
9 = n
then, we simply swap the sides.
n = 9
Caleb started with 50 bacteria for his science experiment, and the number of bacteria doubled in one day. Jenna also started with 50 bacteria for her experiment, and after one day the number of bacteria was equal to 50 to the second power. Who had more bacteria at the end of one day?
Answer:
100+50²=2600
Step-by-step explanation:
because 50x2=100 and 50² is 2500. Add those and you get 2600.
whats 43884325892462 x 8732498885974245 + 2333 - 2894789723895
-CC
Answer:
B
Step-by-step explanation:
Which expression represents 6 less than a number, n?
Answer:
n-6
Step-by-step explanation:
less than is subtraction
6 is taken away from n
n-6
What is the value of the expression
4.8-(2.5-6.3)
urgent please help!! no trolls
Answer:
2.4
Step-by-step explanation:
Answer:
66?
Step-by-step explanation:
112-46= 66
Sorry if it's wrong! ヾ(•ω•`)o
Have a nice day!( ﾟдﾟ)つ Bye
The amount of time it takes Isabella to wait for the bus is continuous and uniformly distributed between 3 minutes and 17 minutes. What is the probability that it takes Isabella more than 5 minutes to wait for the bus
Answer:
P(X>5) = 0.857
Step-by-step explanation:
Let X [tex]\sim[/tex] uniform(3.17)
[tex]f(x) = \dfrac{1}{17-3} ; \ \ \ 3 \le x \le 17[/tex]
The required probability that it will take Isabella more than 5 minutes to wait for the bus can be computed as:
[tex]P(X > 5) = \int ^{17}_{5} f(x) \ dx[/tex]
[tex]P(X > 5) = \int ^{17}_{5} \dfrac{1}{17-3} \ dx[/tex]
[tex]P(X > 5) =\dfrac{1}{14} \Big [x \Big ] ^{17}_{5}[/tex]
[tex]P(X > 5) =\dfrac{1}{14} [17-5][/tex]
[tex]P(X > 5) =\dfrac{12}{14}[/tex]
P(X>5) = 0.857