When using substitution method to solve the following system of equations, what is the result of the first step ? x +2y=5 y=6x+3
Answers
Answer:
x=3
Step-by-step explanation:
Sub y=x-1 into 2x+y=8.
You will get 2x+x-1=8.
Simplify 3x-1=8
Solve 3x=9
x=3
Related Questions
A. 34
B. 55
C. 65
D. 145
Answers
PLEASEEEE HELPPPPP ME !! :)
Answers
Answer:
ok ok, i think it's the last one
Step-by-step explanation:
Kayla owns a food truck that sells tacos and burritos. She sells each taco for $3 and each burrito for $7.25. Yesterday Kayla made a total of $595 in revenue from all burrito and taco sales and there were twice as many burritos sold as there were tacos sold. Write a system of equations that could be used to determine the number of tacos sold and the number of burritos sold. Define the variables that you use to write the system.
Answers
Let b = the number of burritos sold
3t + 7.25b = 595
B=2t
PLEASE HELP!!!!
Robert is baking desserts for a picnic. He needs to make at least 20 servings of dessert for the
event. For every batch of brownies he bakes, he will get 8 servings, and every pie will
yield 14 servings.
Answers
Answer:
x*8 + y*14 ≥ 20
Step-by-step explanation:
We know that:
A batch of brownies makes 8 servings.
A pie makes 14 servings.
He wants to make, at least, 20 servings.
Then if he makes x batches of brownies, he will get x times 8 servings.
If he makes y pies, he will get y times 14 servings.
Adding that, he will get a total of:
x*8 + y*14 servings
And because he wants to make at least 20 servings (he can make 20 or more)
The inequality will be:
x*8 + y*14 ≥ 20
Where the "≥" symbol means that the expression at the left is greater than or equal to the expression of the right
The perimeter of one square is given as 4x. Its perimeter is equal to the perimeter of a rectangle given as 2.5x + 3.75. Write an equation to determine the perimeter of each figure
Answers
Answer:
5
Step-by-step explanation:
it would be 5. x is 5 so if it is wrong sorry its best e a while since i done that kind of math
HERE for help me one more
Answers
Answer:
Im pretty sure its D.
Step-by-step explanation:
I think it would be option D. Is it considered the subsoil layer
Pls? Help? No links pls lol
Answers
(2, -3) is the answer
The cost C in dollars of manufacturing x bicycles at a production plant is given by the function shown below.
C(x) = 3x^2- 600x + 43,500
a. Find the number of bicycles that must be manufactured to minimize the cost.
b. Find the minimum cost.
Answers
Answer:
Minimum 100 bicyclesMinimum cost is 13500Step-by-step explanation:
Given function:
C(x) = 3x^2- 600x + 43500a.
Minimum cost is obtained at vertex.
Vertex is determined by formula x = -b/2a, in standard form of
f(x) = ax^2 + bx + c
Vertex of the given function is:
x = -(-600)/(2*3) = 100b.
Cost at vertex is:
C(100) = 3*100^2 - 600*100 + 43500 = 13500PLEASE I need help!!!!
Answers
Answer:
a. 40 ft²
b. 21 ft²
c. 61 ft²
Step-by-step explanation:
Rectangle area formula: l * w
Triangle area formula: 1/2(bh)
10 * 4
40 ft² for the rectangle
1/2(7 * 6)
1/2(42)
21 ft² for the triangle
40 + 21
61 ft² in total (both the rectangle & the triangle)
All right so i need someone to walkthrough the way to do this cause i'm lost. please do it step by step! Thanks!
Answers
Step-by-step explanation:
Hey there! Your answer :-
The skeletal formula of a quadratic equation is :-
[tex]\sf{ax^2 + bx + c}[/tex]
According to this question, we have :-
[tex]\sf{3x^2 + 8x + 4}[/tex]
So, the answers :-
a = 3b = 8c = 4Hope it helps :) Best of luck for your future!
Which is not an example of intersecting lines?
No Web Sites!
A . Graph Paper
B. A piece of copy paper
C. a woven basket
D. A street with a four way stop at corner.
Answers
Answer:
B. A piece of copy paper.
What is
as a percent?
20%
35%
6%
60%
Answers
Answer:
60%
Step-by-step explanation:
Answer:
60%
Step-by-step explanation:
Find the area of the object
Answers
Answer:
2π + 24 m² = 30.3 m²(3 s.f.)
Step-by-step explanation:
Area of rectangle: l x w
6 x 4 = 24 m²
Area of semicircle: πr²/2
r = 4/2 = 2
π x 2² / 2
4π / 2
2π
Total area: 2π + 24 m² = 30.3 (3 s.f.)
A quadrilateral in the coordinate plane has vertices (3, 2), (3,-4), (5,4), and (5,-2). What is the area, in square units, of the quadrilateral?
Answers
Answer:
4 square units
Step-by-step explanation:
the distance between (3, -4) and (5, -4) is 2, and the distance between (3, -2) and (5, -2) is also 2. since its a quadrilateral do 2x2 and you get 4.
You and your friend decide to go to Red Robin to eat. You are both part of the rewards club and receive coupons in the mail. You have a coupon a coupon for 10% off the total bill. Your friend has a coupon for $5 off the total bill. Which coupon should you use to save the most money if the total bill was $29.90? *
A. the $5 off coupon
B. the 10% off coupon
C. either one
D. cannot be determined
Answers
Answer:
A. the $5 off coupon
Step-by-step explanation:
10% off would only be 2.99 off the bill making it 26.91 but the $5 would take off more
The coupon I would use to save the most amount of money on the total bill is my friend's coupon worth $5.
Which coupon should I use?Coupons reduce the price of an item. An item becomes cheaper after a coupon has been used. In order to determine the better coupon, calculate the price after each coupon has been used.
Coupon 1 : 10% x 29.9 = $3
Coupon 2 : 29.90 - $5 = $24.90
To learn more about how to calculate discounts, please check: https://brainly.com/question/26061308
the dimensions of a rectangle are given in terms of X as shown below the perimeter of the rectangle is 7 3/5 units. what is the value of x
Answers
Answer:
it is 8.65
Step-by-step explanation:
it just is but if it is wrong sorry been a while since i done this
Answer:
x=1.5
Step-by-step explanation:
A town has a population of 17000 and grows at 4% every year. What will be the population after 5 years, to the nearest whole number
Answers
Answer:
20400
Step-by-step explanation:
What is the product (3x10^9) x (2x10^17) in scientific notation
Answers
Answer:
6·10^26
Step-by-step explanation:
Multiply together the coefficients 3 and 2, obtaining 6. We must also multiply together the powers of 10; we do this by ADDING the exponents 9 and 17, to get the final answer
6·10^26
Answer:
6•10^26 is the answer.
Which expression is equivalent to 0.06h +h+0.85h?
Answers
Answer:
1.91h
Step-by-step explanation:
0.06h+h+0.85h
1.91h
Answer:
The first one asdfghjkfruyctdf
Step-by-step explanation:
Please please help me with this question ASAP ASAP please
Answers
what is 3 2/4 as a whole number
Answers
Answer:
4Step-by-step explanation:
3 2/4 = 3.5If rounded up,
3.5 ≈ 4 as a whole numberJune runs a little slower than Carlos. She ran 1/4 of a mile in 3 minutes. How long will it take her
to run a full mile?
Answers
Answer:
12 mintes
Step-by-step explanation:
u add
Find the average rate of change of g(x) =-x²+2x+2 from x=2 to x = 6.
Simplify your answer as much as possible.
Answers
Solve the equation replacing x with 2 and the 6:
-2^2 + 2(2) + 2 = 4 + 4 + 2 =10
-6^2 + 2(6) + 2 = 36 + 12 + 2 = 50
Difference between the answers: 50-10 = 40
Difference between 2 and 6 = 6-2 = 4
Average rate of change = 40/4 = 10
The answer is 10
a box in the shape of a triangular prism is shown below. what is the surface area of the box.
a. 94in
b.96in
c.98in
d.100in
Answers
Answer:
I' m not sure if I'm right but i think the answer is
surface area
A≈85.29
Solve for x.round to the nearest tenth. 70,6
Answers
Answer:
16.5
Step-by-step explanation:
Tan70°=x/6
x=6tan70°
=16.5
A cab company charges $0.70 per cab ride, plus an additional $1 per mile driven. If a cab ride is 40.55 miles long, how much will it cost?
Answers
Answer:
41.25
Step-by-step explanation:
0.70 + 1 (40.55) = 41.25
A sphere has a volume of approximately 24,416.64 cubic inches (using 3.14 for ).
The diameter of the sphere is ___ inches.
Answers
Answer:
diameter = 36 in.
Step-by-step explanation:
V = 4π r^3/3
24416.64 = (4(3.14) r^3)/3
73249.92 = 12.56 r^3
r^3 = 5832
r = cube root of 5832 = 18
diameter = 36 in.
Which equation shows y = (x − 4) 2 − 3 written in standard form?
Answers
Answer:
2x-y=11 is the standard form
Step-by-step explanation:
can someone help me with this
Answers
Answer:
13
Step-by-step explanation:
To solve the problem, you have to do A squared + B squared = C squared. So for your A and B it doesn't matter what order you put them in. We will do 12 sqaured + 5 squared = C squared. 12 squared is 144 and 5 squared is 25. By adding 144 and 25 together, it gives us 169. When we take the square root of 169, we get 13. 13 is the length of the hypotenuse.
Solve the equation. 6x−7=2x+13
Answers
Answer:
6x - 7 = 2x + 13
6x - 2x = 13 + 7
4x = 20
x = 20/4
x = 5
Hope it helps!