Solve the system of equations.
y = x + 3
y = x2 - 2x - 1
A.
(-1, 7) and (4, 2)
B.
(-1, 4) and (4, -1)
C.
(-1, 2) and (4, 7)
D.
(1, 4) and (-4, -1)
Answers
Answer:
The answer is ( -1, 2) and ( 4,7 )
Step-by-step explanation:
Answer:
Step-by-step explanation:
x^2 - 2x - 1 = x + 3
x^2 - 3x - 4 = 0
(x - 4)(x + 1)= 0
x - 4 = 0
x = 4
y= 4^2 - 2(4) - 1 = 16-8-1= 8-1= 7
(4, 7)
x + 1 = 0
x = -1
(-1)^2 - 2(-1)-1= 1+2-1=3-1=2
(-1,2)
answer is C
Related Questions
(REPLY FOR EXTRA POINTS) School hack:
If you have a question something like this: "Determine which integer makes the inequality 6(n − 5) < 3(n + 4) true."
The answer would most likely be the last answer choice.
This is because when teachers create the question they put it as the last one to make you work out all of the firsts ones first so you can do more work which means more practice.
I'm not 100% sure, but I had a question like this and the answer was the last one.
Hope this school hack helps!! :)
Answers
Answer:
Or you could just solve for n and pick the choice that matches what you got :)
Step-by-step explanation:
which one is it [photo is attached]
Answers
You’ll probably have to make a new post
x = -62
x = -34
x = -31
x = -17
Answers
Answer:
x = -34 i think
Step-by-step explanation:
Your equation would be 1/2x - 7 = -24
As you can see you have 7 less than half a number. To find the first part of the equation you see half of a number. This gives you 1/2x in the equation. Then you have 7 less then that. Now you have equals -24.
Using this equation you first add 7 to -7 and -24. Than you have 1/2x = -17. Now you have to divide 1/2 from -17 because 1/2 is tied to c with multiplication. But the only problem is you can’t divide fractions. Instead you multiply by the reciprocal. In this case the reciprocal of 1/2 is 2/1 or 2. You multiply 1/2 by 2/1 which gives you 0. Than you multiply-17 by 2 and you get x =-34
Your answer is x = -34
......................................
Answers
Equation: v1 + v2 = v3
= (4x4x8) + (4x4x8) + (14x4x4)
= 128 + 128 + 224
= 480 cm^3
Answer:
480
Step-by-step explanation:
HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer: probably c
Step-by-step explanation:
i divided it and got 401.063963
Answer:
C.
Step-by-step explanation:
trust -.-
i need help please!!!
Answers
Answer:
all you gotta do is convert miles to yards using google. (or bing if you are a nerd)
Step-by-step explanation:
The box plots shown represent the snowfall amounts at a ski resort for two different years. Use the box plots to compare the data sets.
Drag each value to show if it is greater for 2014, greater for 2015, or if there is not enough information to tell.
Answers
Answer:10
Step-by-step explanation:
The base of this pyramid is a rectangle. How many congruent faces does this pyramid have?
The pyramid has 4 congruent faces.
The pyramid has 5 congruent faces.
The pyramid has 1 pair of congruent faces.
The pyramid has 2 pairs of congruent faces.
Answers
Answer: The Pyramid has 2 pairs of congruent faces
Step-by-step explanation:
The explanation of congruent is the face has the same shape and same size. On rectangle pyramid, the height triangle are 2 same faces and 2 same faces, so it has 2 pairs of congruent faces
What is (are) the coefficient(s) in the expression 11d+6t?
Select ALL that apply.
Responses
d
t
55
66
1111
1717
Answers
solve the inequality below.
10−0.75g≤7
Answers
Answer:
Step-by-step explanation:
-0.75g ≤ 7 - 10
-0.75g ≤ -3
g ≥ 4
Which would be the best name for a function that takes the size of an engine and returns the maximum speed of a car?
Answer Choices: Size(speed), Engine(speed), Speed(size), Time(speed)
Answers
Answer:
Size
Step-by-step explanation:
Just got the answer out
X Y
-7 0
0 1
What is the slope of the linear function represented in
the table?
*-7
07/1
01/1
07
Answers
the formula for slope is rise over run, or y1-y2 divided by x1-x2. we can choose either number as y1 or y2 but it needs to stay consistent with x
so let’s plug in from your table.
0-1 divided by -7 -0
(you could also do 1-0 divided by 0-(-7))
-1/-7 which equals 1/7
so, your slope is 1/7
I hope this helps! :)
What’s j+12=25 tape diagram
Answers
An equation is a mathematical statement that shows two mathematical expressions equal.
An equation consists a variable that does not have a fixed value to it.
Given,
j+12=25
Here ‘j’ is the variable.
To find ‘j’ we just need to 12 from 25.
So, 25 - 12 = 13
Hence, now we know that ‘j’ is equal to 13.
Proof :
13 + 12 = 25
Learn more about Equations here
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Hope my answer helps you✌️
Mark BRAINLIEST
HALP im a d.umb person :D
Answers
Answer:
2x-3, so A.
Step-by-step explanation:
you cancel the common factor
Answer:
Option B, 2x - 9
Step-by-step explanation:
So to simplify, you can simplify the denominator with the first number on the numerator cuz after that the denominator would be 1, and wont be any further simplified, i promise it 2x-9.
Hope this helps!
Preston and Ethan were doing their math homework and together and needed help. Help simplifying this expression. 10^6 divided by 10^2
A) 1^3 B)10^4
C)10^3 D) 10^8
Answers
Answer:
it's b:)
Step-by-step explanation:
Can someone help me please. i will give lots of points
Answers
Answer:
Step-by-step explanation:
B, Mrs web
Answer:
B) 60%
Step-by-step explanation:
Percentage formula
\(\sf Percentage=\left(\dfrac{Value}{Total\:value}\right) \times 100\)
To find what percent of 200 is 120, substitute the values into the percentage formula:
\(\begin{aligned}\implies \sf Percentage & = \dfrac{120}{200} \times 100\\\\&=\dfrac{120 \times 100}{200}\\\\&=\dfrac{12000}{200}\\\\&=\dfrac{120}{2}\\\\&=60\%\end{aligned}\)
Therefore, 120 is 60% of 200.
A summer job pays $5 per hour. A. You work for 12 hours. How much do you make? B. After working 24 hours, do you have enough money to buy an MP3 player that costs $100?
Answers
help with this topic pls thanks <)
Answers
Answer:
a. 66c per oz of cheese bought
b. 66x
Step-by-step explanation:
a. Looking at the graph you can see that the price of 1 oz of cheese is 66 cents. As the graph is a straight line it is seen that the price rises by 66 cents per oz bought.
b. We use the answer of 66 cents per oz of cheese and change the cents out for x, to be able to a y = mx + b equation and since it starts at 0 the b = 0.
Suppose a certain breed of dog loses about 75 hairs per day. What integer represent this change in the amount of hair per week write a mathematical argument that can be used to defend your solution
Answers
Answer:
75 hairs/ day = 525 hairs / week
Step-by-step explanation:
so your base question for this is 75 hairs/ day =? h/ week. how? if the dog is losing 75 hairs per day, then you would do 75 x 7 becuase there are 7 days in a week. the answer to that would give you how many hairs the dog was losing per week. (see attached image for reference)
Hope this helps!
#MRS
The telephone company offers two billing plans for local calls. Plan 1 charges $29 per month for unlimited calls and Plan 2 charges $19 per month plus $0.05 per call.
a. Use an inequality to find the number of monthly calls for which Plan 1 is more economical than Plan 2.
b. Explain the meaning of the answer to part a.
Answers
Answer:
Step-by-step explanation:
wouldn't you do 29 x 19=551+0.05=551.05
Answer:
The number of monthly calls for which Plan 1 is more economical than Plan 2 is 200 calls If more than 200 calls are made, the plan 1 charge will be more than plan 2. Let the number of charges per month be x If plan 2 charges $16 per month plus $0.04 per call, this is expressed as 0.04x + 16 Price that pan 1 charges = $24 If Plan 1 is more economical than Plan 2, this is expressed as:0.04x + 16 > 24 Subtract 16 from both sides:0.04x + 16 - 16 > 24 - 16 0.04x > 8 x = 6/0.04 x = 200 This shows that if more than 200 calls are made, the plan 1 charge will be more than plan 2.
Does anybody know the answer for this??
Answers
Answer:
B
Step-by-step explanation:
cause theres less orange marbles.
Answer:
9/16 is your answer
Find the surface area of a triangular pyramid with the numbers 10 ft, 11 ft, 12 ft
Answers
What do they mean by draw a line through the two points?
Answers
Answer:
You have to plot the points on the top into the graph, it looks like
Step-by-step explanation:
Just plot the numbers
What is the output value for the following function if the input value is 1?
y = 3 x + 1
5
32
0
4
Answers
Explanation: 3 times 1 is 3 so 3 plus 1 is 4. Y=4
HELP ASAP!! A student is painting a brick for his teacher to use as a doorstop in the classroom. He is only painting the front of the brick. The vertices of the face are (−4, 2), (−4, −11), (4, 2), and (4, −11). What is the area, in square inches, of the painted face of the brick?
A. 42 in2
B. 52 in2
C. 104 in2
D. 128 in2
Answers
Answer:
104in2
Step-by-step explanation:
The area, in square inches, of the painted face of the brick is Option C 104 \(in^{2}\).
Using the Quadrant system of the Number line
B (-4,2) lies in the 2nd quadrant.
C (-4,-11) lies in the 3rd quadrant
A (4,2) lies in the 1st quadrant
D (4,-11) lies in the 4th quadrant
Length of Side AB= Length of Side CD= Distance between x coordinate of A & B OR Between C & D i.e. 8 in
Length of Side BC= Length of side AD= Distance between y coordinate of A & D OR Between B & C i.e. 13 in
Area of the Square ABCD= (length of Side AB or CD) X (Length of Side BC or AD)
= (8 x 13) \(in^{2}\)
= 104 \(in^{2}\)
Thus, Area of square is 104 \(in^{2}\).
To learn more about area: https://brainly.com/question/25292087
Someone help me wirh this ASAP
Answers
Step-by-step explanation:
Q 1: 4/5
Q 2: 12 to 15
Q 3: 1/2 or 9/18
Answer: 1, 4/5 2, 12 TO 15 3,9/18 4, 77.5 5, 0.90 6,64 7,6.25 8,375 9,steve hope this helps you plz rate me brainest
Step-by-step explanation:
Containers of oats are prepared in advance for a baking project. Later, raisins are added to the oats to make granola bars. This table shows the rate relationship between oats and raisins.
Cups of Oats (x) Cups of Raisins (y)
1
0.5
2
1
3
1.5
4
2
5
2.5
Which answer choice includes both a function that describes this relationship and correctly explains how?
y = 2 x, because the recipe calls for a ratio of 2 cups raisins per cup of oats.
y = x , because the recipe calls for a rate of 1/2 cup raisins per cup of oats.
y = x , because the recipe calls for a rate of 2 cups raisins per cup of oats.
y = 2 x, because the recipe calls for a rate of 1/2 cup raisins per cup of oats.
Answers
Answer:
2y=x
For every two cups of oats there's one cup of raisins.
Step-by-step explanation:
1÷2=0.5
2÷2=1
3÷2=1.5
4÷2=2
5÷2=2.5
There's twice the ampunt of oats compared to raisins.
What is the answer to the math problem?
39-7x=-4(7x+7)+4
Answers
solve the () and transfer
Will give branist if done correctly..it would really help me out.. Thank you in advance!
Instructions:
Search your home for a rectangular prism. Some examples are a cereal box, a CD case, or a coffee table. Measure your prism using appropriate units, such as inches, centimeters, or feet.
Complete the following. Show all work for calculations.
1. List the dimensions of your box. Be sure to include the units (in, cm, ft, etc.).
2. Describe the shape of the cross section when the box is cut parallel to the base.
3. What is the surface area of the box?
4. What is the surface area of the box if it is scaled up by a factor of 10?
5. What is the volume of the box?
6. What is the volume of the box if it is scaled down by a factor of 1/10 ?
________________________________________
Answers
Answer:
Complete the following. Show all work for calculations.
1. List the dimensions of your box. Be sure to include the units (in, cm, ft, etc.).
10in*5in*2in
2. Describe the shape of the cross section when the box is cut parallel to the base.
rectangle, 10in*2in
3. What is the surface area of the box?
160in^2
4. What is the surface area of the box if it is scaled up by a factor of 10?
16000in^2
5. What is the volume of the box?
100in^3
6. What is the volume of the box if it is scaled down by a factor of 1/10?
o.1in^3
Does anyone know??????
Answers
Answer:
the 2nd sentence
Answer:
It's hard to tell but honestly it's probably the first sentence
Step-by-step explanation:
I hope that this can help :)