Answer: C (1.25, 10.25)
Step-by-step explanation:
The ordered pair does not represent a point on the graph of y = 3x2 – x+7 is (1.25,10.25) .
What is substitution method?The substitution method is a simple way to solve a system of linear equations algebraically and find the solutions of the variables. As the name suggests, it involves finding the value of x-variable in terms of y-variable from the first equation and then substituting or replacing the value of x-variable in the second equation.
According to the question
y = 3[tex]x^{2}[/tex] – x+7
ordered pair does not represent a point on the graph
For this we will use substitution method and substitute value of x and check whether it satisfy y or not , form options
Option A: (-1.5,15.25)
x = -1.5
y = 15.25
substituting the value of x in equation
y = 3[tex]x^{2}[/tex] – x+7
y = 3[tex](-1.5)^{2}[/tex] + 1.5 + 7
y = 15.25
This is a point on graph as it satisfy the condition
Option B: (0.5,7.25)
x = 0.5
y = 7.25
substituting the value of x in equation
y = 3[tex]x^{2}[/tex] – x+7
y= 3[tex](0.5)^{2}[/tex]- 0.5 + 7
y = 7.25
This is a point on graph as it satisfy the condition
Option C: (1.25,10.25)
x = 1.25
y = 10.25
y = 3[tex]x^{2}[/tex] – x+7
substituting the value of x in equation
y = 3[tex](1.25)^{2}[/tex] - 1.25 + 7
y = 10.4375
This is not a point on graph as it does not satisfy the condition
Option D:(2.5,23.25)
x = 2.5
y = 23.25
y = 3[tex]x^{2}[/tex] – x+7
substituting the value of x in equation
y = 3[tex](2.5)^{2}[/tex] - 2.5 + 7
y = 23.25
This is a point on graph as it satisfy the condition
Hence, the ordered pair does not represent a point on the graph of y = 3x2 – x+7 is (1.25,10.25) .
To know more about substitution method here:
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PLEASE ASAP ILL GIVE BRAINLIEST.
Answer:
5 N towards north I think
Step-by-step explanation:
Whoever has the correct answer gets brainliest! What is the area of this trapezoid? This is Geometry by the way.
Answer:94.5
Step-by-step explanation:
Can somebody please help me
Answer:
39
Step-by-step explanation:
78/2 = 39
Find the values of x and y
Answer:
x = 54, y = 63
Step-by-step explanation:
117° and the left base angle are adjacent and sum to 180°
base + 117° = 180° ( subtract 117° from both sides )
base = 63°
Since the triangle is isosceles ( congruent legs ) then the 2 base angles are congruent , so y = 63
and x = 180 - (63 + 63) ← sum of angles in a triangle
x = 180 - 126 = 54
⚠️ Help I don’t know how todo this and I’d appreciate it if someone could help me ⚠️
hey! please help i’ll give brainliest
Answer: A goverment by people
Step-by-step explanation:
Select all the true statements.
A. 2 + (−2) is equal to zero.
B. (−3) + (−4) is positive.
C. −2 − (− 2) is positive.
D. 5 + (−2) is positive .
E. 7 − (−10) is negative.
Answer:
A and D
Step-by-step explanation:
Answer:
A. 2 + (−2) = 2 - 2= 0, true.
B. (−3) + (−4) = - 3 - 4 = -7 is negative, False
C. −2 − (− 2) = -2 + 2 = 0, neither positive nor negative, false.
D. 5 + (−2) = 5 - 2 = 3,is positive true.
E. 7 − (−10)= 7 + 10 = 17 is psoitive, false
options : A, D
I need help asappppppppp
Answer:
I'm not sure but I think is 31.4
Step-by-step explanation:
multiply 15.70 twice
1 and 2 are complementary angles. The measure of 1 is 62 degrees. The measure of 2 is 2x degrees. Find the value of x. The figure is not drawn to scale. The value of x is ?
In the diagram below, 'AB is parallel to cd. What is the value of y?
60 jdfjbdjdjdjd ah inebauwkwhiwiwnais
Answer:
60
Step-by-step explanation:
hii! please help asap. i’ll give brainliest
Answer: B
Step-by-step explanation:
Help with this problem pls
Answer:
16 kg/cm^2
Step-by-step explanation:
200cm^3=32kg/cm^2
1cm^3=32/200 kg per cm^2
So,100cm^2 =(32/200)x100
=16cm/kg^2
A sphere fits inside a cube with the sphere's diameter equal to the width of the cube, 20 centimeters. What is the volume of the cube not filled by the sphere? Round to the nearest cm³
A) 3813cm³
B) 3225cm³
C) 4079cm³
D) 3546cm³
The volume of the cube not filled by the sphere is 3811.209. Option A is the correct.
What is volume?The term “volume” refers to the amount of three-dimensional space taken up by an item or a closed surface. It is denoted by V and its SI unit is in cubic m.
The volume of sphere is found as;;
[tex]\rm V_{sphere}= \frac{4}{3} \pi r^3 \\\\ V_{sphere}= \frac{4}{3} \times 3.14 (10)^3 \\\\ V_{sphere}= 4188.79 \ cm^3[/tex]
The volume of cube is found as;
Volume of cube = Length x width x height
Volume of cube =20 x 20 x 20
Volume of cube = 8000
The volume of the cube not filled by the sphere is found by subtract the volume of the cube by the volume of the sphere.
V=8000 - 4188.790205
V = 3811.209
The volume of the cube not filled by the sphere is 3811.209.
Hence, option A is the correct.
To learn more about the volume, refer to the link;
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There are 6 red marbles 4 blue marbles to yellow marbles. Sabrina picks 2 marbles without putting the first one back what is the probability that she picks a not yellow marble and then a blue marble.
Answer:
P = 3/11
Step-by-step explanation:
There are:
6 red marbles
4 blue marbles
2 yellow marbles.
So there are a total of 12 marbles in the bag, such that each one has the same probability of being randomly picked.
We want to find the probability that the first pick is not yellow (so it can be either blue or red), and the second pick is a blue marble.
Now there are two cases.
The first marble is red and the second blue
the first marble is blue and the second blue
We need to find the probability in each case.
The probability that the first marble is red is equal to the quotient between the number of red marbles (6) and the total number of marbles (12)
p = 6/12
Now, for the second draw, we need a blue marble, the probability in this case is the quotient between the number of blue marbles (4) and the total number of marbles in the bag (now there are 11, because one is already taken)
q = 4/11
The joint probability is equal to the product of the individual probabilities, then:
P₁ = p*q = (6/12)*(4/11) = 2/11
And for the other case, we draw two blue marbles:
For the first draw, the probability is:
p = 4/12
And for the second draw, now there are 3 blue marbles and 11 total marbles, then the probability is:
q = 3/11
The joint probability is:
P₂ = (4/12)*(3/11) = 1/11
The total probability is then:
P = P₁ + P₂ = 2/11 + 1/11 = 3/11
Last summer milo sold water bottles at the park to raise money for his baseball team he made the table below does the table shows a proportional relationship how do you know
Answer:
No
Step-by-step explanation:
For a proportional relationship :
y = kx
Where , k = constant of proportionality
Taking the first set of data:
x = 50 ; y = 10
10 = 50k
k = 10/ 50 = 1/5
Hence, the proportional equation or relation is :
y = 1/5x
Check if this is true for other data points on the data :
Taking the second data point :
x = 85 ; check if y will be 20
From :
y = 1/5x
y = 1/5*85
y = 85/5
y = 17
Since ;
y value from the equation isn't the same as that in the table, then the table does not show a proportional relationship.
*35 BRAINLY POINTS! BRAINLIEST TO THE FIRST CORRECT PERSON!*
The table below shows the cost of a pizza based on the number of toppings. (attached)
Which function represents the cost of a pizza with n toppings?
C(n) = 12 + n
C(n) = 1.5n + 12
C(n) = 12 + 1.5(n – 1)
C(n) = 12n
Answer:
C(n) = 12 + 1.5(n – 1)
Step-by-step explanation:
A 300-inch board is cut into two pieces. One piece is four times the length of the other. Find the length of the shorter piece.
The shorter piece is
inches long
Answer:
60 inches
Step-by-step explanation:
The length of shorter piece is = 1/5 × 300 = 60 inches
What is the mean of 53,13,34,41 26,61,34,13,69?
Qual O valor de (6-2,4) :0,6
Answer: (-1)º + (-6) : (-2) - 24 = 1+(-6): (-2) - 16 = 1+3 - 16 = %3| 4 - 16 = - 12
Espero ter ajudado bons estudos tenha uma Boa noite ❤
Brainlist PLz
Find the height of a cone of radius 5cm and slant height is 13cm.
Answer:
The height is of a cone is 18 cm
Answer:
12 cm
Step-by-step explanation:
Using Pythagoras theorem
Square of Height+Square of Radius=Square of Slant height
H^2+5^2=13^2
H^2+25=169
H^2=169-25
=144 cm
H=12 cm
Which of the following functions translates the graph of the parent function
f(x)=x2f(x)=x2
horizontally left 8 units?
Answer:
(x + 8)^2
Step-by-step explanation:
f(x) ----> f(x + 8)
Round 8.157 to the nearest hundredth.
Answer:
I believe the answer is 8.16 pardon me if it's wrong.
Answer:
8.18
Step-by-step explanation:
First, note that 8.175 has two parts. The integer part to the left of the decimal point and the fractional part to the right of the decimal point:
Integer Part: 8
Fractional Part: 175
To round 8.175 to the nearest hundredth means to round the numbers so you only have two digits in the fractional part.
We use the following rules to round 8.175 to the nearest hundredth:
A) If the last digit in the fractional part of 8.175 is less than 5, then simply remove the last the digit of the fractional part.
B) If the last digit in the fractional part of 8.175 is 5 or more and the second digit in the fractional part is less than 9, then add 1 to the second digit of the fractional part and remove the third digit.
C) If the last digit in the fractional part of 8.175 is 5 or more and the second digit in the fractional part is 9, and the first digit in the fractional part is less than 9, then add 1 to the first digit in fractional part and make the second digit in fractional part 0. Then remove the third digit.
D) If the last digit in the fractional part of 8.175 is 5 or more and the second digit in the fractional part is 9, and the first digit in the fractional part is 9, then add 1 to the integer part and make the fractional part 00.
With 8.175, rule B applies and 8.175 rounded to the nearest hundredth is:
8.18
An A grade will be given to students having at least 370 total test points. There is one more test to take before the semester is over. Lesha wants to know what she needs to score on the next test to finish with an A. Write and solve an equation to determine what score she needs to get. Explain your reasoning.
Answer:
95 points
Step-by-step explanation:
Given
[tex]n = 370[/tex] --- expected point
See attachment for points
Required
An inequality to determine the points needed
First, we calculate the points (p) Lesha has already accumulated.
[tex]p = Test\ 1 + Test\ 2 + Test\ 3[/tex]
[tex]p = 75 + 100 + 100[/tex]
[tex]p = 275[/tex]
Let the number of points needed be t.
So:
[tex]p + t = 370[/tex] ---- i.e. She must score a total of 370
Make t the subject
[tex]t = 370 -p[/tex]
Substitute 275 for p
[tex]t = 370 -275[/tex]
[tex]t = 95[/tex]
19 ft 17ft 19 ft Volume =
Answer:
1,022.83 ft³
Step-by-step explanation:
volume= ⅓×½××19×17×19 = 1,022.83 ft³
This graph represents the function f(x)=x2-4x+3/x2+ax+b
1. Which of the following represents the perimeter of a square whose diagonal measures 10 centimeters?
Answer:
20√2 cm
Step-by-step explanation:
The required perimeter of the square is 20√2 cm.
HURRY IM BEING TIMED! The line of best fit for this scatter plot shows the relationship between the average temperature and the monthly electricity bill at Jenny’s house.
Answer:
[tex]y = \frac{11}{8}x + 50[/tex]
Step-by-step explanation:
Given
See attachment for plot
Required
The line of best fit
From the attached plot, we have:
[tex](x_1,y_1) = (0,50)[/tex]
[tex](x_2,y_2) = (80,160)[/tex]
Calculate the slope (m)
[tex]m = \frac{y_2 - y_1}{x_2 -x_1}[/tex]
So, we have:
[tex]m = \frac{160 - 50}{80-0}[/tex]
[tex]m = \frac{110}{80}[/tex]
[tex]m = \frac{11}{8}[/tex]
The line of best fit is then calculated as:
[tex]y = m(x - x_1) + y_1[/tex]
This gives:
[tex]y = \frac{11}{8}(x - 0) + 50[/tex]
[tex]y = \frac{11}{8}x + 50[/tex]
Answer:
The electricity bill will be about $200 when the average temperature reaches 100°F.
A triangle has an area of 153.79 square centimeters and a base of 18.2 centimeters. What is the height?
Answer:
16.9
Step-by-step explanation:
Find The number to the angle QPR
Step-by-step explanation:
you know that QPS adds up to 47
so the sum of RPS and QPR shoukd = 47
(3x - 38) + (7x - 95) = 47
you then solve for x then you can use that to find QPR
What is the distance between the two points 5,3 and (1,0)?
Answer: The distance between (5,3),(1,0) is 25units square.
Step-by-step explanation:
So, I usually plot the points, and conect them first.
And then I draw a right triangle, so draw two line that conect to the line that we need to find the distance, and form a triangle. Make sure that the line from point (5,3)(1,0) is the Pythagorean triples.
Next, you count the units of the two line that makes a right angle. which is 4 units for the first line, and 3 units for the second.
Thirdly, you plug the numbers into the Pythagorean equation, which is a^2+b^2=c^2 (plug it into a and b, it doesn't matter which number for which letter)
4^2+3^2=c^2
16+9=c^2
25=c^2
[tex]\sqrt{25}[/tex] = [tex]\sqrt{c}[/tex]
c=25
My explanation is kinda confusing, sorry about that.