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3 years ago

Which table could represent a function

Mathematics

1 answer:

g100num [7]3 years ago

6 0

Answer:

i think 4 but i dont know donf teust me

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Solve this equation. 34 + x = 63

qwelly [4]

Subtract 34 from both sides:
x=29

8 0

3 years ago

You measure 33 turtles' weights, and find they have a mean weight of 48 ounces. Assume the population standard deviation is 14.1

zepelin [54]

Answer:

Confidence interval = 48±4

Step-by-step explanation:

Given:

Mean X = 48

Standard deviation sd = 14.1

Computation:

Z table value of 90% = 1.645

Total number n = 33

Computation:

Margin of error M.E = Z[sd/√n]

Margin of error M.E = 4 approx.

Confidence interval = 48±4

7 0

3 years ago

Write the equation of the parabola that has its x-intercepts at (1+<img src="https://tex.z-dn.net/?f=%5Csqrt%7B5%7D" id="TexForm

VladimirAG [237]

Answer:

$y=2x^2-4x-8$

Step-by-step explanation:

<u>Factored form of a parabola</u>

$y=a(x-p)(x-q)$

where:

p and q are the x-intercepts.
a is some constant.

Given x-intercepts:

(1+√5, 0)
(1-√5, 0)

Therefore:

$\implies y=a(x-(1+\sqrt{5}))(x-(1-\sqrt{5}))$

$\implies y=a(x-1-\sqrt{5})(x-1+\sqrt{5})$

To find a, substitute the given point (4, 8) into the equation and solve for a:

$\implies a(4-1-\sqrt{5})(4-1+\sqrt{5})=8$

$\implies a(3-\sqrt{5})(3+\sqrt{5})=8$

$\implies4a=8$

$\implies a=2$

Therefore, the equation of the parabola in factored form is:

$\implies y=2(x-1-\sqrt{5})(x-1+\sqrt{5})$

Expand so that the equation is in standard form:

$\implies y=2(x^2-x+\sqrt{5}x-x+1-\sqrt{5}-\sqrt{5}x+\sqrt{5}-5)$

$\implies y=2(x^2-x-x+\sqrt{5}x-\sqrt{5}x+\sqrt{5}-\sqrt{5}+1-5)$

$\implies y=2(x^2-2x-4)$

$\implies y=2x^2-4x-8$

6 0

2 years ago

The owner of a rental company rents bicycles and tricycles and keeps inventory by counting seats and wheels. One day, he counts

My name is Ann [436]

Answer:

2b + 3t = 60

Step-by-step explanation:

2b is the number of wheels on a bicycle

3t is the number of wheels on a tricycle

and 60 is the total number of wheels

5 0

3 years ago

Kayden buys bottles of grapefruit juice at the corner store. Assume each bottle of juice is the same price. The proportional rel

Bond [772]

An equation is formed of two equal expressions. The value of the constant of proportionality is 0.41.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given there exists a proportional relationship between the number of juice bottles bought, j, and the total cost in dollars and cents. Therefore,

c ∝ j

c = kj

As the relation is represented by the equation c=0.41j. Therefore, the value of the constant of proportionality is 0.41.

Learn more about Equation:

brainly.com/question/2263981

#SPJ1

7 0

2 years ago

Which table could represent a function​

Which table could represent a function