Answer:
The solution of the system is (5, 20).
Step-by-step explanation:
y = 4x and 3x + 2y = 55 are simultaneous equations. To find the unknowns, we have to solve these equations simultaneously.
The first can be rewritten as
4x – y = 0.
Therefore, we have:
4x – y = 0
3x + 2y = 55
Multiplying the first equation by 2 all through, we have
8x – 2y = 0.
So we can now combine the second equation with the first multiplied by 2.
8x – 2y = 0
3x + 2y = 55
Adding these equations we have:
11x = 55
Divide both sides by 11 and we have
x = 5
Substitute x = 5 in equation 1, we have
4(5) – y = 0
y = 20.
Therefore, x = 5 and y = 20.
The solution of the system is (5, 20).
Mary's Muffins makes 300 muffins on Thursday mornings. On Fridays, they make 10 times as many muffins as they do on Thursdays. How many muffins does Mary's Muffins make on a Friday? *
Answer: 3,000
Step-by-step explanation: 300 x 10 = 3000
Answer:
3000
Step-by-step explanation:
300+300=600+300=900+300=1200+300=1500+300=1800+300=2100+300=2400+300=2700+300=3000
A Farm stand sells two types of grapes the cost of green grapes can be represented by the equasion y=1.5x, where y is the total cost for x pounds. the graph represent the cost of black grapes. what statement must be true?
answers
a) three pounds of green grapes cost 6.00
b) two pounds of black grapes cost 3.00
c)black grapes cost less per pound than green grapes
d)black grapes cost more per pound the green grapes
Answer:
I dont know because their is no graph angel O stop looking up the answer
Step-by-step explanation:
ITs not A
The cost of purchasing gasoline varies directly with the number of gallons purchased. Kali paid $52.90 for 23 gallons of gas. What is the direct variation equation that relates y, the cost of a gasoline purchase, to x the number of gallons?
Answer:
y = 2.3x
Step-by-step explanation:
y = kx
52.9 = 23x
52.9 ÷ 23 = x
x = 2.3
What is the center of the circle x² + y2 - 4 = 0?
Answer:
(0,0)
Desmos graphing calculator is a great way to enter the formula of a circle and see a visual example.
Sheldon gets paid $4 per hour to babysit his cousin. This
weekend, he babysat on both Saturday and Sunday. He
made a total of $56. Sheldon babysat for 8 hours on
Sunday. For how many hours did he babysit on Saturday?
Let x = hours spent babysitting on Saturday. Choose the equation and
solution steps that correctly represent this problem.
Answer:
6
Step-by-step explanation:
4 times 8 = 32. 56 - 32 = 24. 24 divided by 4 = 6.
Solve the radical equation. Quick !!! Show work !
-26x + 3 = -18
Answer:
12
Step-by-step explanation:
[tex]-2\sqrt{6x+3} = -18[/tex]
divide both sides by negative 2
[tex]\sqrt{6x+3} = 9[/tex]
square both sides
6x+3=81
6x=78
x=12
If 9(x-9) = -11, then x= ?
A. - 92/9
B. -20/9
C. - 11/9
D. -2/9
E. 70/9
c) Which of these numbers is a square number?
A) 4 x 10^5
B) 9 x 10^4
C) 4 x 10^3
D) 9 x 10^3
Answer:
A is the correct answer
Answer:
non of them
Step-by-step explanation:
Square number should have power of 1/2 .
What are the coordinates of point K?
Answer:
i think its b
Step-by-step explanation:
im not sure but i hope this helps
Answer:
the answer is the last one or D
Step-by-step explanation:
Write the standard equation of the circle.
I’ll give brainliest!
Please help! I think I know the answer but I don't trust myself xD (Theres a screenshot attached)
Answer:
the second one
Step-by-step explanation:
6th grade math help me plzzzz
A building has 15 floors of offices above
ground and 3 floors below ground. Lucy
parks on the 3rd floor below ground
and has an office on the 10th floor. The
ground floor is floor zero. How many
floors must she go up from her car to
her office?
Answer:
13 floors
Step-by-step explanation:
it says the ground floor is floor zero. she is 3 floors below the ground floor so you add 3+10 to get the amount of floors she has to go up to get to her office.
What’s the answer to this question ? 4.4y - 5x = -8
what do you want us to solve for? Step-by-step explanation:
Write an algebraic expression or equation to represent each word phrase.
Seventeen increased by twice a number, n
Answer:
2n + 17
Step-by-step explanation:
Hector took out a small loan of $900 for 18 months (remember to turn this into
years). The simple interest rate on the loan was 10.5%. How much will he pay in
interest on the loan?
Answer:
$141.75
Step-by-step explanation:
(900)(-105) (13/12) or 1.5
im confused right now.
Answer:
x = -45
Step-by-step explanation:
It costs $60.00 to rent the gymnasium, plus $5.00 per person. What would be the total cost to rent the gymnasium for 40 people?
what's $90.94 with 50% off..?
Answer:
Write 50% as a decimal number:
STEP 2: Multiply by 90.94:
Step-by-step explanation: answer is 49.47
Answer:
45.47$
Step-by-step explanation:
50% means to cut things off by half
Simon is creating the clay structure shown below. Simon has boxes of clay that each contain 200 of clay. How many boxes of clay does Simon need to open to make the sculpture? A. 3 B. 4 C. 5 D. 6
Answer:
D.6
Step-by-step explanation:
The Mallards pay their two quarterbacks $7.2 million and $1.4 million. If the team salary is $33 million a year and their budget for quarterbacks is 25% of total salaries. Are they over budget? a) Yes b) No
Answer:
a) Yes
Step-by-step explanation:
The computation is shown below:
Given that
Their two quarterbacks is $7.2 million and $1.4 million
Its total is
= $7.2 million + $1.4 million
= $8.6 million
Now if the team salary is $33 million
And their budget is 25% of total salaries
i.e.
= $33 million × 25%
= $8.25 million
So as we can see that it it overbudget as the target is $8.25 million but it is $8.6 million
SO, the correct option is a.
Answer:
Yes
Step-by-step explanation:
The inverse of f (x)=x^2-3 is?
Answer:
[tex]f^{-1}[/tex](x)=[tex]\sqrt{x+3}[/tex] , - [tex]\sqrt{x+3}[/tex]
Step-by-step explanation:
Plz help me on this :))
What is the slope and y intercept of Y= -4x + 2
Answer:
Slope=-4
Y intercept= 0,2
Step-by-step explanation:
Use the slope-intercept form to find the slope and y-intercept.
Lin notices that the number of cups of red paint is always 15 of the total number of cups (0.2 of the total number of cups). She writes the equation r = 15t (r = 0.2t) to describe the relationship. Which is the independent variable? Which is the dependent variable? Explain how you know.
Step-by-step explanation:
The number of cups of red paint is always 15 of the total number of cups. 0.2 of the total number of cups.
She writes the equation r = 15t (r = 0.2t) to describe the relationship.
In this case, the total no. of cups is an independent variable. No. of cups do not depend on any term.
The number of cups of red paint is a dependent variable as it depends on the number of cups.
The three angles of a triangle measure x+37, 90, and x+67. Find the measurement of the smallest angle in degrees.
Answer:
The smallest angle in the triangle is 30°
Step-by-step explanation:
You can solve this by including the fact that the sum of the angles in the triangle has to be 180 degrees. We're given values describing the angles, so we can simply add them together, say the equal 180, and solve for x:
[tex](x + 37) + 90 + (x + 67) = 180\\2x + 37 + 90 + 67 = 180\\2x + 194 = 180\\2x = 180 - 194\\2x = -14\\x = -7[/tex]
The smallest angle then is x + 37, or 37 - 7, giving us 30°
If three angles of a triangle measure x+37, 90, and x+67. Then 30 degrees is the measurement of the smallest angle in degrees.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
Given,
The three angles of a triangle measure x+37, 90, and x+67.
We need to find the measurement of smaller angle.
From angle sum property we know that the sum of three angles is equal to 180 degrees.
x+37+90+x+67=180
2x+194=180
Subtract 194 from both sides
2x=180-194
2x=-14
Divide both sides by 2.
x=-7
Substitute the value of x in smallest angle
x+37
-7+37=30
Hence the measurement of the smallest angle in degrees is 30
To learn more on Triangles click:
https://brainly.com/question/2773823
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I will give brainlist
Answer:
7
Step-by-step explanation:
A ladder is 61 inches tall. How tall is it in feet and inches
Answer:
5'1
Step-by-step explanation:
Every 12 inches is a foot. 12 x 5 is 60. Plus 1. Is 61.
That mean's it's 5 feet 1 inch.
Answer:
5 feet 1 inch
Step-by-step explanation:
because 12 inches is equal to 1 foot and 12 times 5 is 60 so that 5 feet plus one inch is 5 foot 1 inch
what is one and one so easy if you answer it correctly I will mark you brainiest
Answer: 3 Answers, It could be 11, It also can be the number 2, or it can be a foul shot in sports. Was I right? Or is the answer "one and one"
Step-by-step explanation:
Subtract 4(2x-7) from 5(3x-2)
Answer:
7x+18
Step-by-step explanation:
Multiplay the numbers by for and five and solve