Answer:
B
Step-by-step explanation:
Plug in coordinates to see if they match the answer.
It's easier in slope-intercept form, so lets change it first.
-2x+y=7
+2x +2x
y=2x+7
Now we can plug in the coordinates to see if they match.
Lets try A.
11=2(-2)+7
11=-4+7
11=3
A is incorrect.
Lets try B.
11=2(2)+7
11=4+7
11=11
B is a solution, therefore is on the graph.
Re-write the quadratic function below in Standard Form
y = 2(x – 5)2 – 3
Answer:
y=2x-13
Step-by-step explanation:
PEMDAS
Distribute parenthesis --> y=2x-10-3
Add like numbers --> y=2x-13
Can someone explain this question to me please
Replace x in y in the equation and see if it is true:
5x + 3y = -4
5(-5) + 3(7) = -25 + 21 = -4
(-5,7) is a solution
5(1) + 3(-3) = 5 + -9 = -4
(1,-3) is a solution
a pizza usually cost $15 there is a sale for 15% off what is the cost of the pizza
Answer:
Well the discount with 15% off is $2.25. Now subtract 15.00-2.25 to get 12.75. You are paying $12.75 for the discounted pizza.
Step-by-step explanation:
Answer: Initially it looks like Mindy is making a profit of $0.75 plus the pizza worth $12. So it is a fair deal for Mindy. Now coming to the part of the pizza shop owner, we find that he also gains extra $2.25 from this deal. So it is a fair deal for both the shop keeper and Mindy.
Identify the range of the function shown in the graph
Answer:
a
Step-by-step explanation:
What is the slope of the line that passes through the points (−1,−10) and (-1, -2)
? Write your answer in simplest form.
Answer: There is no slope
Step-by-step explanation:
These points form a straight line. You can tell because both of their x coordinates are -1 which means they are a straight line when formed. If both coordinates have the same x (sign and number) they form a straight line.
X=1 and x=3 write the quadratic equation
x2^-3x+1
Step-by-step explanation:
All you have to do is the 3 Forms of Quadratic Equations
Standard Form: y = a x 2 + b x + c y=ax^2+bx+c y=ax2+bx+c.
Factored Form: y = a ( x − r 1 ) ( x − r 2 ) y=a(x-r_1)(x-r_2) y=a(x−r1)(x−r2)
Vertex Form: y = a ( x − h ) 2 + k y=a(x-h)^2+k y=a(x−h)2+k.
i’m not to sure what to do here.. can someone help? this assignment is 20 points!
WILL GIVE BRAINLIEST, THANKS, AND 5 STARS!!! LOTS OF POINTS! PLEASE SOMEONE HELP ME WITH THESE QUESTIONS!!!!
12. A rectangular kitchen table has an area of 7x^2 + 75x + 50. Which of the following could represent one of the side lengths of the table?
7x + 10
7x + 5
x + 5
13. What number has to fill in the blank to make this a perfect square trinomial: 9x^2 + ___ x + 144.
36
86
18
72
14. Draw an area model to represent 4x^2+12x+9 = (2x+3)^2. Label the length and width of the whole square and label each individual small square and rectangle. (Please submit a picture of the drawn diagram, labeled and all!!!)
PLEASE! And please put good explanations so I understand better!!
Answer:
[12] 7x+5
[13] 72
Step-by-step explanation:
[12] [tex]7x^2+75+50[/tex]
The first term is, 7x^2 its coefficient is 7 .The middle term is, +75x its coefficient is 75 .The last term, "the constant", is +50First, Multiply the coefficient of the first term by the constant 7 × 50 = 350
Then, find two factors of 350 whose sum equals the coefficient of the middle term, which is 75 .
Then, Rewrite the polynomial splitting the middle term using the two factors 5 and 70
7x^2 + 5x + 70x + 50
Add up the first 2 terms, pulling out like factors :
x × (7x+5)
Add up the last 2 terms, pulling out common factors :
10 × (7x+5)
(x+10) • (7x+5)
Hence, Answer = 7x + 5
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[13]
A perfect square trinomial is a quadratic equation of the form
[tex]ax^2+bx+c=0[/tex]
and a result of squaring a binomial. This means that the first and third term of the trinomial is equal to the square of the first and second term of a binomial. Therefore, in order to determine the value of the third term, we can use the method of completing the square in which the formula is
[tex]c=(\frac{b}{2a})^2[/tex]
where c is the constant and b and a are the coefficients of the first and the second term.
The trinomial 9x^2+72x+144 is a perfect square trinomial, because it's discriminant is equal to zero
Δ=b 2 −4ac=72 2 −4(9)(144)=0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~Learn with Lenvy~
mia picked 1 cup of strawberries for a cake which is enough for 3/4 of the cake how many cups does she needs for the whole cake
Answer:
to make the full cake the strawberries required will be (4/3) cups.
Step-by-step explanation:
1. Lennox is in NYC and has $10 to get to his destination. The taxi charges $0.75 per mile with
a flat fee of $2.35. How many miles can he travel
Answer:
(10-2.35)/.75 =10.2 miles.
Step-by-step explanation:
Does anyone know the answer for 7 and 8?
Answer:
7) A 8) C
Step-by-step explanation:
number 7 tells us that y=x+1
so we just basically plug it in
2x+3(x+1)=4 Answer: A
to eliminate x's in number 8, we have to multiply one of the equations by -1
let's multiply the second one
4x+3y=6
4x ·-1-y·1=2·-1
4x+3y=6
-4x+y=-2
x's eliminate
4y=4, meaning that the answer is C
sean had 40 red marbles and 36 green marbles.he won some more red marbles and the number of green marbles is now 2/5 of sean total marbles. how many red marbles did he win
Answer:
14
Step-by-step explanation:
*Notice that number of green marbles did not change throughout
Therefore,
36 green marbles -> 2/5 of Sean total marbles
Sean's total marbles = 36/2 *5 = 90
Number of red marbles won = 90-36-40 = 14
How many terms are in this expression 4u + 6t
Answer:
There are two terms in the expression...
Hope this helps!!!!
pl.z hel..p m.e Si r
mat.h geom.etry ques.tion....
[tex]\\ \rm\Rrightarrow 7x+10+3x+10=180[/tex]
[tex]\\ \rm\Rrightarrow 10x+20=180[/tex]
[tex]\\ \rm\Rrightarrow 10x=160[/tex]
[tex]\\ \rm\Rrightarrow x=16[/tex]
Now
z=7x+10=7(16)+10=112+10=122°y=3x+10=3(16)+10=48+10=58°Answer:
y = 58°
z = 122°
Step-by-step explanation:
Linear pair: a pair of adjacent angles formed when two lines intersect. The two angles are always supplementary and so their measures sum to 180°.
Therefore,
(7x + 10) + y = 180
(3x + 10) + z = 180
Alternate interior angle theorem: when 2 parallel lines (AB and CD) are cut by a transversal (EF), the resulting alternate interior angles are equal.
Therefore,
y = (3x + 10)
z = (7x + 10)
Substituting y = (3x + 10) into (7x + 10) + y = 180 and solving for x:
⇒ (7x + 10) + (3x + 10) = 180
⇒ 10x + 20 = 180
⇒ 10x = 160
⇒ x = 16
Calculate angle y and angle z by substituting the found value for x into their equations:
y = 3(16) + 10 = 58°
z = 7(16) + 10 = 122°
For the given data set; 2, 5, 7, 9, 11, 15 , 17 find the range.
Find the circumference of the circle use 3.14 for r=3ft
Answer:
[tex]circumference \: = 2 \times 3.14 \times 3 = 18.84[/tex]
What Is the coordinates for this translation 6 units left and 3 units down......
Answer:
Step-by-step explanation:
after a tourist covers 36% of the lenght of a route, he notices that he still has 240 km to park. What is the length of the route?
Answer:
375km
Step-by-step explanation:
The tourist has already covered 3% of the journey.
So the remaining distance to be covered is 64% f the total journey.
(100% - 36% = 64%)
Therefore 64% of the journey = 240km
Then 100% of the journey:
y km --> 100%
240 km --> 64%
Total length of the route = 240 km * (100/64) = 375km
In an arithmetic sequence, the third term is 1 and the ninth is 49. What is the explicit formula for the sequence?
A) a n = 8n − 15
B) a n = −8n − 15
C) a n = 8n − 23
D) a n = −8n − 23
Answer:
C
Step-by-step explanation:
A) a(n) = 8n - 15
this is incorrect because if n = 3, then a = 9 not 1.
B) a(n) = -8n-15
this is incorrect because if n = 3, then a = -39 not 1.
C) a(n) = 8n-23
this is correct because if n = 3, then a = 1, and if n = 9, then a = 49.
D) a(n) = -8n-23
this is incorrect because if n = 3, then a = -47 not 1.
Hope this helps!
Also, please mark me as brainliest!
please help, don’t know how to do this
Answer:
-3=-2 -2=-1 -1=0 0=1 1=2 2=3 3=4
Step-by-step explanation:
You add one to each of the listed numbers due to the question being x+1 so you take all of your x´s and add one raising their amount up by 1
I need help on number 7 I don’t understand it
Answer:
a) Right triangle b) Obtuse triangle c) equilateral triangle.
Step-by-step explanation:
A right triangle has a 90 degree angle. Obtuse triangles need to have one angle greater than 90 degrees, and equilateral triangles have same sides.
Let f(x) = -2x + 4 and g(x) = -6x - 7. Find f(x) - g(x).
can anybody help me with this? show your work if you can too, please!
Answer:
f(x) -g(x) = 4x +11
Step-by-step explanation:
Substitute the given expressions and simplify.
f(x) -g(x) = (-2x+4) -(-6x-7)
Eliminating parentheses, we get ...
f(x) -g(x) = -2x +4 +6x +7 = (-2+6)x +(4 +7) . . . . combining like terms
f(x) -g(x) = 4x +11
HELPPP!!! BRAINLEST??
Answer:
1/3
Step-by-step explanation:
1 cup and 6 hours (5) over total (15)
5/15 simplifies to 1/3
Insurers use a process of selecting and classifying insurance applicants to prevent individuals who have a higher-than-average probability of loss from obtaining insurance at average rates. This process is called
Answer:
This process is called
Producing. underwriting.
Step-by-step explanation:
PLEASEE HELP!!
Write and equation for this graph in slope- intercept form.
Answer:
-1.25x+2
Step-by-step explanation:
x intercept = 2.5
y intercept = 2
0-y intercept/x intercept-0 = m
0-2.5/2-0 = -1.25
Equation form:
y = m*x+b where b is the y intercept.
m = -1.25
c = 2
To put it all together,
y = -1.25x+2
E
Rrrrrrrerererererererere
Answer:ssssssssssuuuuuuupp
Step-by-step explanation:
Multi-Step Find the angle measures of each inscribed quadrilateral.
10-13 20 points please help
The angle measure of each inscribed quadrilateral is as follows;
10
∠P = 90°
∠R = 90°
∠Q = 140°
∠S = 40°
11.
∠A = 70°
∠C = 110°
∠ B = 115°
∠D = 55°
12.
∠B = 100°
∠D = 80°
∠E = 141°
∠C = 39°
13.
∠V = 101°
∠T = 79°
∠U = 86°
∠W = 94°
Cyclic Quadrilateral
A cyclic quadrilateral has all it vertices on the circumferences of the circle . opposite angle of a cyclic quadrilateral add up to 180 degrees. The sum of the whole angles add up to 360 degrees. Therefore, tha angle measure of each inscribed quadrilateral is as follows
10.
5x + 20 + 7x - 8 = 180
12x + 12 = 180
12x = 180 - 12
12x = 168
x = 168 / 12
x = 14
Therefore,
∠P = 5x + 20 = 5(14) + 20 = 90°∠R = 90°∠Q = 10x = 10(14) = 140°∠S = 40°11.
4z - 10 + 10 + 5z = 180
9z = 180
z = 20
Therefore,
∠A = 4z - 10 = 4(20) - 10 = 70°∠C = 110°∠ B = 6z - 5 = 6(20) - 5 = 115°∠D = 55°12.
1 / 2 z + 1 / 4 z + 30 = 180
3 / 4 z + 30 = 180
3 / 4 z = 150
3z = 600
z = 600 / 3
z = 200
Therefore,
∠B = z / 2 = 200 / 2 = 100°∠D = z / 4 + 30 = 200 / 4 + 30 = 80°∠E = z - 59 = 200 - 59 = 141°∠C = 39°13.
15y - 4 + 12y - 5 = 180
27y = 180 + 9
y = 189 / 27
y = 7
14 + 4x + 6x - 14 = 180
10x = 180
x = 18
Therefore,
∠V = 15y - 4 = = 101°∠T = 79°∠U = 14 + 4x= 14 + 72= 86°∠W = 94°learn more on quadrilateral here: https://brainly.com/question/9177423
What is the difference between the 15th and the 2nd square number?
Answer: [tex]15^{2} - 12^{2} \\= 81 = 9^{2}[/tex]
Pls help!
Find the perimeter and area the figure.
last question i Promise! :)
Answer:
Perimeter: 37.4
Area: 74.1
Step-by-step explanation:
Perimeter is 2(5.7) + 2(13) = 11.4 + 26 = 37.4
Area is 5.7*13 = 74.1
Let me know if this helped! Brainliest is appreicated <3
I will give brainliest who ever answer this question:) Thank you!
Answer:
2(x-4)+2(2x+5)
Step-by-step explanation:
The perimeter of a rectangle is 2(length)+2(width). Thus, the side values can be simply plugged into this equation.
Answer:
P = 2(2x+5) + 2(x-4)
Step-by-step explanation:
Perimeter is found by adding all sides
(2x+5) + (2x+5) + (x-4) + (x-4)
Notice there are two sets of sides.