2x-y=-5 x+y=8 elimination
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Related Questions
. y=-3x2 + bx + c; (1, 0)
find the unknown coefficients
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Answer:
[tex]y = - 3 {x}^{2} + bx + c \\ when \: (1,0) \\ 0 = - 3( {1})^{2} + b(1) + c \\ 0 = - 3 + b + c \\ b + c = 3 - - - (.) \\ at \: (0,0) \\ 0 = c \\ c = 0 \\ hence \: b = 3[/tex]
c(x)=2x^3+3x^2-1 find rational zeros
Answers
Answer:
1/2
Step-by-step explanation:
The Rational Root Theorem says that any rational root has
1. a numerator that is a factor of the constant term
2. a denominator that is a factor of the leading coefficient (that's attached to the highest-power term)
Numerator: [tex]\pm 1[/tex]
Denominator: [tex]\pm 2[/tex]
That means there are only two possible rational roots: [tex]\pm \frac{1}{2}[/tex]
Try them both by plugging them into the polynomial.
[tex]2\left(\frac{1}{2}\right)^3 + 3\left(\frac{1}{2}\right)^2 -1= \frac{1}{4}+\frac{3}{4}-1 =0[/tex]
Aha! The negative one-half value does not produce 0
9 in
4 in
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
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Answer:
9.8in
Step-by-step explanation:
i think this right
Tiffany made 40 cupcakes for her birthday. She gave 5 to her family before taking the rest to school. What percent did she give away to her family? Show all work.
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40 - 5
40 +40 +20= 100%
5+5+2.5= 12.5 %
She gave 12.5 percent
Plz help me well mark brainliest if correct
Answers
Answer:
63
Step-by-step explanation:
smallest is 38
biggest is 63
Smallest: 23
Biggest: 63
Your welcome
Find the interior angle sum for each polygon.
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Answer:
720°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 6 , then
sum = 180° × 4 = 720°
75°, then determine the arc length of
Part B: If HY = 46 inches and mYX
YX
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Answer:
[tex]\frac{115\pi }{6} \\or\\19.16666667\pi[/tex]
Step-by-step explanation:
Arc length is [tex]2\pi r*\frac{o}{360}[/tex]
r is 46 theta is 75
[tex]2(46)\pi *\frac{75}{360} \\92\pi *\frac{75}{360} \\\frac{6900\pi }{360} \\\frac{115\pi }{6} or 19.166666667\pi[/tex]
ion
What is the total surface area of a pyramid with a square base with sides of 12 cm, where the faces
have a slant height of 15 cm?
15 cm
On this side.
A
= 0.3333333
12 cm
O A 144 cm?
OB 234 cm
OC 360 cm
OD 504 cm?
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Answer: 504
Step-by-step explanation:
Area: 4 triangles + square
Triangle area = 1/2 x b x h
Square = side x side
4(1/2 x 12x 15) + 12x12
= 504
What is the value of 1 / 5 (6 + 8.5)?
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Yolanda is planning out her square vegetable garden. One side 7 feet. How
can I represent the perimeter with equations?
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Perimeter=
7+7+7+7=28ft
Or
7•4=28
Hope this helps!!!
pls help ill give branliest
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Triangle- 2 1/2
ASAP pleaaase ASAP ASAP I’ll give a brainliest
A student had 10 marks in mathematics. But he remembers only 7 of them:
1,1,2,2,3,4,5. The mode of the marks is 3 and the mean is 2.9. What are the
missing marks? Once you manage to find these marks, create a frequency
table for the students' scores and visualize the results with a bar chart.
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Answer:
The missing marks are 3, 3, and 5.
Step-by-step explanation:
Since the mode is 3, that means it's the number that occurs most often. The numbers 1 and 2 occur twice so there must be at least 3 3's on the list. But since the mean is 2.9, the third mark cannot be a 3 because it will make the mean only 2.7 so the 3rd mark can be either a 4 or a 5. Using 5 will make the mean 2.9. I take it that you know how to make a bar graph for this problem.
Decide which title best describes all of the expressions in each column of the table. Place the correct title at the top of each column.
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The middle one is has exactly one term
And the last one is has two terms
I believe I hope this helps
Help me plsssssssssssssssssssssssssss
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number 7 is as follows Answer: C18.9
Step-by-step explanation:
The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. so (5.65x2)+(3.8x2)=18.9 cm
Answer:
2 is F. 768 because all you have to do is mulltiply base times height oh and 7 is C
Step-by-step explanation:
A group of friends wants to go to the amusement park. They have no more than $310 to spend on parking and admission. Parking is $9, and tickets cost $35 per person, including tax. Write and solve an inequality which can be used to determine xx, the number of people who can go to the amusement park.
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Answer:
9 + 35x = 310
Step-by-step explanation:
what is the volume if a hemisphare with a diameter of 10cm
Answers
Answer:
volume of hemisphere=2/3πr³
2/3×22/7×5³261.90cm³hope it helps.
Find the missing value in the ratio table. Then write the equivalent ratio
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Answer:
The missing value in shirts is 28, and the missing value in jackets is 14.
Step-by-step explanation:
What is the expression in factored form? x^2-64
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Hope this helped! Please mark as BRAINLIEST!
Answer:
(x-8)(x+8)
Step-by-step explanation:
a2-b2={a+b)(a-b) a=8 and b=8
(x+8)(x-8)
Wyatt is going to invest $28,000 and leave it in an account for 5 years.
Assuming the interest is compounded quarterly, what interest rate, to the
nearest hundredth of a percent, would be required in order for Wyatt to end
up with $31,000?
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Answer:2.04 %
Step-by-step explanation:
Find the quotient:
-5y5 + 20y
-5y
Enter the correct answer.
100
DONE
Clear all
OO
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Answer:
i dont know if am completely right since your question doesn't really make sense but i think its y = 10
Step-by-step explanation:
Remove the "y" - -5 + 20
Add up - -5 + 20 = 15
Add the other -5y - -5 + 15 = 10
Re-add the "y" - 10y
y = 10
The Venn diagram shows the number of students that exercise in different ways. What number should go in the highlighted box below?
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Answer:
50
Step-by-step explanation:
Add up all the numbers
Find the product for each of the following.
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Answer:
1 10/17
Step-by-step explanation:
make 45 a fraction by putting a denominator of 1
3/85 * 45/1
3*45 = 135
85*1 = 85
Simplify 135/85 = 1 10/17
Omar, Hala and Lujain got paid a total of $240 for cleaning neighborhood cars. They split the money in the ratio of 5: 9: 10. How much money did Omar earn?
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Answer:
Total amount Omar earn = $120
Step-by-step explanation:
Given:
Total amount Omar, Hala and Lujain got paid = $240
Ratio of money Omar, Hala and Lujain got paid = 5:9:10
Find:
Total amount Omar earn
Computation:
Total amount Omar earn = [Total amount Omar, Hala and Lujain got paid][Omar'ratio / Total ratio]
Total amount Omar earn = [240][5 / (5+9+10)]
Total amount Omar earn = [240][5 / (24)]
Total amount Omar earn = [24][5]
Total amount Omar earn = $120
NO LINKS OR ELSE YOU'LL BE REPORTED!Only answer if you're very good at Math.
Find the slope of each line using the rise/run formula.
Answers
Answer:
-1/3 and 3/1
Step-by-step explanation:
The first one go down 1 and right 3.
The second one go up 3 and right 1.
Please help me, no links or random answers, please. When you are writing the answer please number it so I know which answer is for which question.
Answers
Answer
A: (1,7.5)
b:(0,6)
c: because the graph is linear graph and have a constant rate of change/ slope which is -1.5
Step-by-step explanation:
In ΔDEF, the measure of ∠F=90°, the measure of ∠D=20°, and EF = 92 feet. Find the length of FD to the nearest tenth of a foot.
Answers
Answer:
FD ≈ 252.8 feet
Step-by-step explanation:
By applying tangent rule in the given right triangle,
tan(20°) =
tan(20°) =
0.36397 =
FD =
FD = 252.77
FD ≈ 252.8 feet
PLEASE HELP:(
In the book Cinder, What happened just after Prince Kai hired Cinder to fix his android?
The baker, Chang Sacha, showed symptoms of the plague and was taken away.
Adri sent her a comm telling her the apartment building was on fire.
A hover malfunctioned and crashed into Cinder's booth, destroying it.
She saw Pearl and her friends tormenting a young cyborg boy in the market.
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Answer:
Adri sent her a comm telling her the apartment building was on fire.
Step-by-step explanation:
good luck
The owner of Maumee Ford-Volvo wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.
Car Age (years) Selling Price ($000) Car Age (years) Selling Price ($000)
1 9 8.1 7 8 7.6
2 7 6 8 11 8
3 11 3.6 9 10 8
4 12 4 10 12 6
5 8 5 11 6 8.6
6 7 10 12 6 8
Required:
a. Determine the regression equation.
b. Estimate the selling price of a 10-year-old car (in $000).
c. Interpret the regression equation (in dollars).
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Answer:
ŷ = -0.47876X + 11.17724
$6.4
Step-by-step explanation:
Given the data :
Car Age (years) Selling Price ($000) Car Age (years) Selling Price ($000)
1 9 8.1 7 8 7.6
2 7 6 8 11 8
3 11 3.6 9 10 8
4 12 4 10 12 6
5 8 5 11 6 8.6
6 7 10 12 6 8
The estimated regression equation using a linear regression calculator is :
y = -0.47876X + 11.17724
With - 0.47876 being the slope ; and 11.17724 being the intercept
y = predicted variable (price of car) ; x = predictor variable (Age of car)
Selling price of a 10 year old car : x = 10
ŷ = -0.47876(10) + 11.17724
Price = 6.38964
About 6.4(000) dollars ($6,400)
According to the regression equation : The starting price of cars is about $11.18 (intercept) with the proved of cars declining by a value of $0.479(negative slope value) each year.
PLEASE I need help really bad I only have 10 minutes left to turn it in!! I’ll mark you as brainliest please!!!
Answers
Answer:
Area=76.8
Perimeter=49.6
Good luck!
100/a = 25
i think its 2500 but I'm not sure
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Answer:
a=4
Step-by-step explanation:
100/a=25
100/25 =a
a=4