Answer:
wow this your first Q
Step-by-step explanation:
3х +2y = 12 + у
4y — 7t = 10
Solving systems of equations
numbers 3x + 2y = 12
y = x + 1
Substitution Method
Since y is already isolated in the second equation we can use that value, to substitute for y in the first equation.
3x + 2 (x + 1) = 12
3x + 2x + 2 = 12
5x = 12 − 2
5x = 10
x = 2
Substitute the computed value of x to the second equation to determine the value of y.
y = 2 + 1
y = 3
Elimination Method
3x + 2y = 12
x − y = −1
Multiply the second equation by 2 to eliminate
x or you can also multiply the second equation by 3 to eliminate y. However since it is easier to multiply by 2, I will follow the first method.
3x + 2y = 12
2x − 2y = −2
Adding the two equations eliminates the y variable.
5x = 10
x = 2
Substitute the computed value of x to the second equation to determine the value of y.
y = 2 + 1
y = 3
Solution Set:
(2,3)
In the figure, the radius of the partial circle with center Ais 4 feet.
The perimeter of the figure is feet, and the area of the figure is
Assume 1 = 3.14, and round your answers to the nearest hundredth.
square feet
1)24.50 ;))))))))))
2)45.68 ;)))))))))
The perimeter of the figure is, 25.12 feet
And, the area of the figure is, 50.24 feet²
What is mean by Circle?The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.
We have to given that;
The radius of the partial circle with center A is,
⇒ 4 feet.
Now,
We know that;
Perimeter of circle = 2πr
Here, r = 4 feet
⇒ Perimeter of circle = 2πr
⇒ Perimeter of circle = 2 × 3.14 × 4
⇒ Perimeter of circle = 25.12 feet
And, Area of circle = πr²
⇒ Area of circle = 3.14 × 4²
⇒ Area of circle = 50.24 feet²
Thus, The perimeter of the figure is, 25.12 feet
And, the area of the figure is, 50.24 feet²
Learn more about the circle visit:
https://brainly.com/question/24810873
#SPJ7
Mathematical name of the shapes
Answer:
A: Triangular Prism B:Cuboid
Step-by-step explanation:
I hope this helps! ^_^
If a question says an item is marked down by 35%
a) what percentage would you actually be paying of the original price
b) how would you write that as a decimal
**Both answer will be written as part of the answer part A/part B**
Answer:
a) 65%
b) .65
~ Please mark as brainliest :)
6. Find the lateral area and surface area of the
cylinder. Round to the nearest tenth.
12 cm
6 cm
Answer:
I don't know
Step-by-step explanation:
i don't know
i don't know
i don't know
i don't know
an event with a probability of 0 is called
A.certain
B.likely
C.impossible
Answer:
c
Step-by-step explanation:
it is impossible with a probability of 0
Answer:
Option C
Step-by-step explanation:
An event with a probability of 0 is impossible. There is no chance of the event happening. This makes A and B wrong.
The correct answer is C.
Brainilest Appreciated!
Graph the function and identify the domain and range. y=-4x^2
Algebra test unit:4 lesson:10
Quadratic Functions and Equations Unit Test Part 1
1.C, 2.B, 3.A, 4.C, 5.B, 6.A, 7.A, 8.B, 9.C, 10.B, 11.D, 12.A, 13.B, 14.B, 15.C, 16.C, 17.B, 18.C, 19.D, 20.B, 21.C,
Answer:
Domain: All real numbers, Range: All real numbers greater or equal to 0.
Step-by-step explanation:
A second order polynomial is a continuous function and therefore, domains is the set of all real numbers. Lastly, the range of the function according to the graph is all values of x greater or equal to 0. The positive leading coefficient of the polynomial indicates the existence of an absolute minimum.
The graph of function is attached below.
Domain of function is, (-∞ ,∞ )
Range of function is (-∞, 0)
Domain and range :The domain of function is defined as all input values to a function, for which function is defined.
Range of the function is output values to a particular input value.
Given function is,
[tex]y=-4x^{2}[/tex]
This open down parabola.
Domain of function is, (-∞ ,∞ )
Range of function is (-∞, 0)
The graph of function is attached below.
Learn more about the domain and range of function here:
https://brainly.com/question/1942755
Which equation demonstatres the distributive property?
A. 39 + 9 = 45
B. 39 + 3 = 39(12 + 3)
C. 36 times 9 = 9 times 36
D. (12 + 3)3 = 3(12 + 3)
Answer:
B
Step-by-step explanation:
The distributive property states that:
a(b + c) = ab + ac
Look at the choices:
A: 39 + 9 = 45
There's nothing of this form; in fact, there aren't even any parentheses, so eliminate A.
C: 36 times 9 = 9 times 36
This is saying 36 * 9 = 9 * 36. Again, there aren't any parentheses. Actually, this demonstrates the commutative property.
D: (12 + 3)3 = 3(12 + 3)
There are parentheses, but they're on both sides, so this can't be right, either. In fact, this is the associative property.
By elimination, the answer is thus B.
The rule of distributive property states that [ a(b + c) = ab + ac ].
So, we need to find an answer choice that contains that specific format.
Option A is incorrect because there is nothing to solve for on the right side.
Option B is correct because it contains the same format as the rule stated above.
Option C is incorrect because its the same as [ 36 * 9 = 9 * 36 ] and it's not in the same format as the rule.
Although Option D has half of the format in the rule, it doesn't have the other half containing what it looks like after the distributive property is appplied. So, this is incorrect as well.
Therefore, the answer is B.
Best of Luck!
Drag numbers to the table so it shows a proportional relationship between x and y.
Answer:
0.8 4
3.2 16
12.8 64
Step-by-step explanation:
Proportional means that it will have a constant rate of change. If we divide 4/0.8 in the first example, we get 5. In the second example, we need to find x/3.2=5. 16/3.2=5. In the third example, we need to find 2 numbers divided by each other that equals 5. 64/12.8=5
Answer:
0.8 4
3.2 16
12.8 64
Step-by-step explanation:
What is the following correctly express the number below in scientific notation 395,000,000
A. 395•10⁸
B. 3.95•10⁹
C. 395•10¹⁰
D. 39.6•10⁹
E. 3.95•10⁸
F. 3.95•10⁷
Answer:
the answer would be E 3.95•10^8
PLZ HELP ME!! I’m If you horizontally shift the absolute value parent function, F(x) = |xl, left three
units, what is the equation of the new function?
Answer:
g(x) = |x+3|
Step-by-step explanation:
Within the parentheses, it'll go left or right, outside of it, it'll go up or down
Evaluate the expression when a=-15 and b=-5 .
b+14
----------
3
Step-by-step explanation:
I'm not 100% sure but I believe the answer is 6 and 1/3
What is the third term when you complete the square for the polynomial
x^2 + 8x?
4
8
16
64
Answer:
x^2 + 8x+16 is (x+4)^2
Step-by-step explanation:
I need some help with this. If you could help me, that would be great.
Answer:
.31 g / mL
Step-by-step explanation:
Density = mass / volume
Sample 3
mass = 7 1/4 = 7.25
Volume 23.1
Density = 7.25/ 23.1 = .313852814
To the nearest hundredth
.31 g / mL
Need help with these two questions no work needed just he answer thank you
Answer:
NoYesI hope I helped you! If my answer is correct, please mark me brainiest. Thanks!
A giraffe at the zoo is 5 meters tall. Name something else that is about 5 meters tall.
Answer:
telephone pole
Step-by-step explanation:
Answer:
Step-by-step explanation:
A side of a square piece of cloth has a length of 12 inches what is the area of the piece of cloth
Answer:
144 inches squared
Step-by-step explanation:
multiply 12 by 12
An electric motor pumps water into a pool at a rate of 500 liters per hour. After a tune up, its rate increases by x liters per hour. If the motor now takes 3 hours to pump 1800 liters, in which equation does x represent the increase in speed after the tune up?
Answer: 3(500+x)=1800
What two geometric properties do all polygons share?
Answer:
all sides equal and.
all angles equal.
Anyone know the answer and explanation? thank you!!
Answer:
The answer is 10
Step-by-step explanation: So first we divided 15 by 3 which is 5. Then we times 4 and 5 which is 20. 10+x=20, so x = to 10
Answer:
x = 10
Step-by-step explanation:
4/3 = (x+10)/15
Using cross products
15*4 = 3*(x+10)
60 = 3(x+10)
Divide each side by 3
60/3 = 3/3(x+10)
20 = x+10
Subtract 10 from each side
20-10 = x+10-10
10 = x
Please help me with this question.
Answer:
150.72
Step-by-step explanation:
v=1/3 * 3.14 *4² * 9
v=1/3 * 3.14 * 16 * 9
v=1/3 * 50.24 * 9
v=1/3 * 452.16
v=150.72
Analyze the set below and complete the instructions that follow.
C= {x|x<-42}
Use set-builder notation to define the complement of the set. U=R.
A. C^c=Ø
B. C^c={c|c<=-42}
C. C^c={x|x>=-42}
D. C^c={x|xeR}
Answer:
C
Step-by-step explanation:
Given: the set is defined as [tex]C=\left \{ x|x<-42 \right \}[/tex]
To find: Set builder form of the complement of the set C.
Solution:
A set is a well-defined collection of objects. Set-builder form is used to denote the elements of the set. This form can also be used to express sets using an interval or an equation.
Complement of set A refers to elements not in A.
For [tex]C=\left \{ x|x<-42 \right \}[/tex],
[tex]C^c=\left \{ x|x\geq -42 \right \}[/tex]
Option C is correct.
Rafael is ordering an ice cream dessert. He must order a size, a flavor of ice cream, and a topping. There are 3 sizes, 3 flavors, and 1 topping to choose from. How many different ice cream desserts could he order?
Answer:
9
Step-by-step explanation:
Multiply the number of sizes by flavors, the by toppings.
3*3*1
tell whether the events are independent or dependent.Then find P(A and B)...You roll a number cube two times.Event A:You roll an odd number on the first roll.Event B:You roll a 4 on the second roll.
Answer:
Some probability situations involve more than one event. When the events do not affect one another, they are known as independent events. Independent events can include repeating an action like rolling a die more than once, or using two different random elements, such as flipping a coin and spinning a spinner. Many other situations can involve independent events as well. In order to calculate probabilities accurately, we need to know if one event influences the outcome of other events.
Answer:
The outcome of the first roll does not affect the probabilities of the outcomes for the second roll. Therefore, these events are independent.
Step-by-Step Explanation:
The events are independent since the person rolling had rolled a number cube twice, not switching it for the two events.
Select the condition for which it is NOT possible to construct a triangle.
A triangle with side lengths 4 cm, 5 cm, and 6 cm
A triangle with side lengths 4 cm, 5 cm, and 15 cm
A triangle with side lengths 4 cm and 5 cm and an included 50°angle
A triangle with angle measures 30° and 60°, and an included 3 cm side length .
Answer:
A triangle with side lengths 4 cm, 5 cm, and 15 cm
Step-by-step explanation:
In order to form a triangle with given side lengths, sum of any two sides must always be greater than the third side.
[tex]4+5= 9\ngtr 15\\[/tex]
Robert wants to buy lights around the edge of his deck the deck is 49feet and 26feet wide how many yards of lights does he need
Answer:
150 feet
Step-by-step explanation:
Assuming the deck is a rectangle, you need to multiply each side by 2 and add them together.
Answer:
50 yards
Step-by-step explanation:
Let l = length, w = width, and P = perimeter in feet. Let x equal perimeter in yards.
To solve this problem, we first need to find the perimeter of the deck.
To do so, use the formula 2l + 2w = P.
Since the deck is 49 feet long and 26 feet wide, plug in 49 for l and 26 for w.
2(49) + 2(26) = P
Evaluating 2*49 and 2*26, the equation becomes 98 + 52 = P.
Evaluating 98 + 52, the equation becomes 150 = P.
The next step in this problem is to convert feet to yards. We know that Robert needs 150 feet of lights. Since there are three feet in a yard, we can use the formula P = 3x to find the amount of yards of lights Robert needs.
Plugging in 150 for P, the equation becomes 150 = 3x.
Dividing both sides by 3, the equation becomes 50 = x.
Therefore, the final answer is 50 yards.
PLZ HELP ME I WILL GIVE BRAINLIEST....
A scientist wants to find the average mass of fish living in a large pond. So she will use the masses of a sample of fish from the pond to find the average mass.
Answer the questions below.
(a) Which unit(s) could be used for the unit of measurement? Check all that apply.
1.) minutes
2.) kilograms
3.) grams
4.) milligrams
5.) seconds
(b) Which of the procedures below would be the best way to find the average mass?
1.) Pick 2 fish from a shallow region of the pond and weigh each of them.
2.) Pick 42 fish from a shallow region of the pond and estimate their masses.
3.) Randomly pick 2 fish from the entire pond and estimate their masses.
4.) Randomly pick 42 fish from the entire pond and weigh each of them.
Answer:
A. 2, 3, and 4
B: 4
Step-by-step explanation:
Average mass is defined as, adding masses of all bodies and then divide by number of bodies.
(a). Kilograms, grams and milligrams
(b) Randomly pick 42 fish from the entire pond and weigh each of them.
(a). Since we are interested in the masses of the fish and not the time
so that, only unit of mass is to be considered.
Therefore, Kilograms, grams and milligrams are used to find the average mass.
(b). Since, Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen
Therefore, Randomly pick 42 fish from the entire pond and measure their masses. This will provide a representative sample with no bias.
Learn more:
https://brainly.com/question/18060320
Evaluate
√18/30= what numders
Answer:
0.77745966692... (a repetitive decimal)
Rounded to the nearest hundredth is 0.78.
Step-by-step explanation:
Divide 18/30 which is 0.6.
You can use the calculator to square root 0.6.
The finalized answer is 0.777459666924...
Whether you decide to round it is up to you.
please give me a hand
Answer:
x=5? im not really sure what the question is its all fuzzy
Step-by-step explanation:
Your answer is x = 9.
To solve this equation we just need to expand the brackets and then rearrange the equation to have x on one side and the numbers on the other:
2(x + 5) - 7 = 3(x - 2)
2x + 10 - 7 = 3x - 6
2x + 3 = 3x - 6
- 2x
3 = x - 6
+ 6
9 = x
I hope this helps!
A line graph has Number of Turns of a Large Tire on the x-axis, and Number of Turns of a Small Tire on the y-axis. For every 2 turns on a large tire, there are 10 turns on a small tire; 4, 20; 6, 30; 8, 40. Find the constant of proportionality from the proportional relationship shown on the graph.
Answer:
5
Step-by-step explanation: