Solve the system of equations algebraically. Show all of your work.
y= x^2 + 2x
y= 3x +30
Answers
Answer:
See attached below
Step-by-step explanation:
Related Questions
Please help!!!!!!!!!!!!!!!!
Answers
Answer:
23
Step-by-step explanation:
90-47=43 (90 bc right angle)
2x-3=43
+3
2x=46
÷2
x=23
HELPPPPPPPPPPPPPPPPME PLS
Answers
Answer:
b=1 a=-3
Step-by-step explanation:
Raul made 4 cups of fruit salad. one serving of fruit salad is 1/2 cup. how many serving of fruit of fruit salad did raul make?
Answers
Answer:
Raul made 8 servings of fruit salad
Step-by-step explanation:
Here, we want to get the number of servings made by Raul
From the question;
1 serving = 1/2 cup
x servings = 4 cups
Thus;
4 * 1 = x * 1/2
x = 4/(1/2)
x = 8 servings
The cost of fencing a circle shaped garden is $15 per foot if the radius of the garden is 7 feet find the total cost of fencing The Garden to the nearest dollar
Answers
Answer:
$2310
Step-by-step explanation:
Total cost of fencing = area of fence x cost of fencing per feet
Area of a circle = nr^2
n = 22/7
r = radius = 7
Area = 22/7 x 7^2 = 154
154 x 15 = 2310
Write an equation for this relationship.
Answers
Answer:
y=18.5x
Step-by-step explanation:
74-55.5=18.50
92.50-74=18.50
111-92.5=18.50
(3,55.50)
y=18.5x +b
55.50=18.5(3)+b
55.50=55.50+b
b=0
What is the ∣−9.4∣= [value1]
Answers
Answer:
9.4
Step-by-step explanation:
If using the method of completing the square to solve the quadratic
equation x2 + 5x – 1= 0, which number would have to be added to "complete the square"?
Answers
Answer:
25/4 or 6.25
Step-by-step explanation:
Given that the general equation of a quadratic equation is given as ax^2 + bx + c = 0, to complete the square, we subtract c from both sides of the equation and add the square of (b/2a) to both sides.Hence given x^2-5x-19=0, to complete the square, we add (-5/2)^2 to both sides following the illustration given.This is 25/4 or 6.24
solve 2 in 3 (x-4)
HURRY
Answers
Answer:
-6
Step-by-step explanation:
Answer:
-6is the correct answer
Step-by-step explanation:
hope this helps
The function Mx)=x^3-3x^2+ 2x rises as x grows very small.
A. True
O B. False
Answers
The phrasing "x grows very small" is the same as saying "x gets more negative". So it starts off with x = -1, then goes to x = -2, then to x = -3, etc etc
Visually x is moving to the left
As you move to the left along this curve, you'll eventually go downhill at some point and keep going downhill. So overall, y is getting more negative as well. This means the function is falling as you move to the left.
----------
We can see this numerically. If x = 0, then y = 0 after plugging it into y = x^3-3x^2+2x
Then plug x = -1 into that same equation and you should get y = -6
Plug x = -2 into that equation and you should get y = -24
The progression from y = 0 to y = -6 to y = -24 shows y getting more larger in the negative direction.
The square root of 105 would lie between which two consecutive integers?
Answers
Answer:
the square root of 105 lies between 10 and 11
Step-by-step explanation:
Which perfect squares "box" 105 in? 10^2 = 100 and 11^2 = 121.
The square roots of 100 and 121 are 10 and 11.
Thus, the square root of 105 lies between 10 and 11.
If a cone has the same diameter and height as a cylinder, how many cones filled with water can the cylinder hold?
1
2
3
4
5
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Answer:
3
Step-by-step explanation:
Please help! Im begging!
Answers
Alright, so we know that there are 7 days a week with 24 hours per day.
24x7= 168 hours a week.
Convert the problem to an equation using the percentage formula: P% * X = Y.
Let's take the 40% that is Sleep and use it in the percentage formula with the 168 hours.
40%x168= roughly 67 hours.
Hope this helped!
round the number 15.39624 to 2 decimal places
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15.40 becauwe 6 makes 9to 0 and it makes 3 to 4
Does anyone know the answer to this?
Answers
Answer:
80°
Step-by-step explanation:
both triangles are scalene triangle and the have equal properties
angles in triangles sum up to 180°
30°+70° +D=180°
D=180-100=80°
Please help me with my work I’ll give Brainlest
Answers
Answer:
I believe it's a^2 * b^2 = c^2
Step-by-step explanation:
a^2 * 9^2 = 15^2
hope this helps! :)
Write the standard equation of a circle with center $\left(-3,\ 4\right)$ and radius $1$ .
Answers
Answer:
(x + 3)² + (y – 4)² = 1
Step-by-step explanation:
(x – h)² + (y – k)² = r².
Where (h, k) is the center of the circle, and r is the radius of the circle.
7 x 10-⁴ 3.5 X 10⁶ thank youuuuuuuuuuiuuuuu
Answers
Answer:
−3430000
Step-by-step explanation:
Mark as brainllest
A 20-ounce soft drink costs $1.80. A 12-ounce soft drink costs $1.32.
Answers
Answer:
rfgvsdgsgvbd fs e gbaebg g
Step-by-step explanation:
you can find this by diving 1.80/20 and 1.32/12
The experimental probability that the bus will arrive after 8:19 is
Answers
Answer:
i wish i can help but good luck
Step-by-step explanation:
I need help with this problem- please help me ;w;
NO BOTS
Answers
Answer:
A) Perimeter: 210
Area: 2,516
B) Area
C) Perimeter
Hope this helps ya :3
Check out the image
Answers
Answer:
oop, okay
Step-by-step explanation:
Answer:
twitter should work
go on it but also other websites so when you go to delete your history (ctrl h on chrome) it'll match up
example: go on twitter at 2:25 but also some other websites and switch back until 2:26 go back on and then other websites
Step-by-step explanation:
Select the correct answer. Simplify the polynomial expression. 3x(-2+7)-5(x -1)(4x-3)
A. -26x2 + 56x - 15
B. 14x2 - 14 + 15x
C. -26x2 + 21x - 15
D. 2x2 + 14x - 2
Answers
Answer:
-20x^2 + 56x - 15
Step-by-step explanation:
3x(−2+7)−5(x−1)(4x−3)
Add −2 and 7 to get 5.
3x×5−5(x−1)(4x−3)
Multiply 3 and 5 to get 15.
15x−5(x−1)(4x−3)
Use the distributive property to multiply −5 by x−1.
15x+(−5x+5)(4x−3)
Apply the distributive property by multiplying each term of −5x+5 by each term of 4x−3.
15x−20x^2+15x+20x−15
Combine 15x and 20x to get 35x.
15x−20x^2+35x−15
Combine 15x and 35x to get 50x.
50x−20x^2−15
Swap terms.
-20x^2 + 56x - 15
A computer company will sell its new tablet
computer for six hundred forty dollars and
sixty-five cents. How is this number written in
expanded notation?
Answers
Explanation: J is equivalent to $640.65
hope that helps if you have any questions let me know and if you could mark this as brainliest i would really appreciate it!!
help :c !!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
No solution
Step-by-step explanation:
2x-4+1=2x-2
2x-3=2x-2
-3= -2
this statement is not false
Simply combining like terms:21b-32+7b-20b
Answers
Answer:
21b-32+7b-20b
7b-32
Step-by-step explanation:
A square has a diagonal with the length of 8V7 inches. What is the length of the
sides?
Answers
Answer:
approximately 13.9 inches
Step-by-step explanation:
That's 8√6, not 8V7.
The four sides are of the same length (x). According to the Pythagorean Theorem, x² + x² = (diagonal length)² = (8√6)², or
2x² = 64(6) = 384
Dividing both sides by 2, we get:
x² = 192, or x² = 4(48). Then the side length is x = √16√12, or
x = 4√4√3 = 8√3. This is approximately 13.9 inches.
This penny will double every day for the next 30 days. What is the answer? Can someone tell me at least how to set up the doubling equation for this doubling math excercise?
Answers
Answer:
10737418.24
Step-by-step explanation:
The answer is 2^n
A right triangle has a hypotenuse of 10 feet and a leg of 6 feet. What is the length of the other leg?
Answers
Answer:
The other length of the leg is 8 feet.
Step-by-step explanation:
To find the answer we have to find what 10 and 6 is squared. 10 x 10 = 100.
6 x 6 = 36. Now since we are trying to find the length of the other leg, we will subtract 100 from 36 and we get 64. Then for the last step, we will figure out what number squared equals 64. Because 8 x 8 = 64, 8 is our answer.
HELP ASAPPPPPPPPPPPP
Answers
Answer:
x = 140°
Step-by-step explanation:
x is a supplementary angle to 40°. This means that when added together equals 180°
x = 180° - 40° = 140°
Answer:
Step-by-step explanation:
Since I can't see slide 2 I don't know what pattern they want you to see, but, I do know that when you have a line with an angle... the other side , here that is the 'X' will always be 180 - 40 = X
X is easy to solve that way. it's , ofc 140 :D
Can you help me find the volume
Answers
Also, the equation to find this is V=lwh/3 or 5x9x14/3, which equals 210.
Also I would greatly appreciate brainliest if you could give it to me thank you and good luck.
Answer:
here is the formula
and at first calculate area of triangle then use this formulA