Write the quadratic equation in standard form. What is the value of b 2 - 4ac?1 = 2x 2 + 7x

Answers

Answer 1
Answer: b^2 - 4ac > 0
2x^2 +7x -1 =0
b =7 a=2 c= -1
b^2 - 4ac = 7^2 - 4*2*(-1)
= 49 + 8
= 57

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Find the common difference of the arithmetic sequence 5, 14, 23,...5,14,23,...

Answers

Answer: 9

Step-by-step explanation: The common difference is the difference between each of the terms in an arithmetic sequence.

Let's work backwards.

First, we take the last term we are given and

subtract the second to last term.

So here, we subtract 23 - 14 to get 9.

Now, we take 14 - 5 to get 9.

Notice that 9 is our answer in both problems above.

That means it's our common difference.

What’s greater 5 1/2 or 5 1/4

Answers

Answer:5 1/2

Step-by-step explanation:5 1/2= 5.50

5 1/4= 5.25

5.50>5.25

Answer: I’m pretty sure it’s 5 1/2

Step-by-step explanation:

The perimeter of a rectangle is 50 yards. The width is 1 more than one-half of the length. What are the dimensions of the rectangle?

Answers

Answer:

The length of the rectangle is 16 yards

The width of the rectangle is 9 yards

Step-by-step explanation:

The given parameters are;

The perimeter of the rectangle = 50 yards

The width, W of the rectangle = 1 + Length, L/2

Therefore we have;

W = 1 + L/2

2 × W + 2 × L = 50

2 × (1 + L/2) + 2 × L = 50

2 + L + 2·L = 50

3·L = 50 - 2 = 48

L = 48/3 = 16

The length, L = 16 yards

The width, W = 1 + L/2 = 1 + 16/2 = 1 + 8 = 9

The width, W = 9 yards.

Which of the following tables represents a proportional relationship?A. x 8 16 24 32
y 24 48 72 96

B. x 8 9 10 11
y 24 48 72 96

C. x 32 33 34 35
y 96 72 48 24

D. x 32 36 40 44
y 96 112 128 144

Answers

The solution is Option A.

x = { 8 , 16 , 24 , 32 }

y = { 24 , 48 , 72 , 96 }

The table shows a proportional relationship as y = 3x

What is Proportion?

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

Given data ,

Let the values in the set x be Set A = { 8 , 16 , 24 , 32 }

Let the values in the set y be Set B = { 24 , 48 , 72 , 96 }

Now , the relationship between the first element of set A and the first element of set B is y = ab

where a is the constant of proportionality

Now , substituting the values of x and y , we get

24 = 8a

Divide by 8 on both sides of the equation , we get

a = 3

Therefore , the proportional relationship between x and y is y = 3x

24 = 3 x 8

48 = 3 x 16

72 = 3 x 24

96 = 3 x 32

Hence , The table shows a proportional relationship as y = 3x

To learn more about proportion click :

brainly.com/question/7096655

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the answer is A because you cross multiply

The surface area of a cube is 96 square feet. Find the volume of the cube.

Answers

cube has six identical walls

96ft
² : 6 = 6 ft²  - one wall surface

pattern on the surface of the cube
A = a²
a - the edge of the cube

A = a
²    ⇔ a=√A
                  a = √(16ft)² = 4ft
V = volume
V = a³
V = (4ft)³ = 64 ft³


Simplify 3.3l : 900ml

Answers

3.3l : 900ml = 3300 ml / 900 ml = 33/9