1. Which of the given mathematical sentences are quadratic equations?
Not Quadratic Equation
Quadratie Equation
2. How do you describe quadratic equation?
3. How would you describe those mathematical sentences which are not
quadratic equations?
4. How are they different from those mathematical sentences which are not
quadratic equations?​

Answer:

-19

Step-by-step explanation:

Answer:

-19

Step-by-step explanation:

replace x with seven then simplify

First, not a function if we draw from A to E

Second, domain is -1 ≤ x ≤ 3

Third, range is -5 ≤ y ≤ 2

Answer: Domain=3,-1,3; Range=-5,-3,2

Step-by-step explanation:

Answer: 4.2x10^5=420000

Step-by-step explanation: its a positive five so you go in the positive direction from the decimal but if it was a negative you could go the other way (hope this helps)

Answer:

x = -5 , y = 2

Step-by-step explanation:

Solve the following system:

{y + 2 x = -8

-5 y + 3 x = -25

Hint: | Choose an equation and a variable to solve for.

In the first equation, look to solve for y:

{y + 2 x = -8

-5 y + 3 x = -25

Hint: | Solve for y.

Subtract 2 x from both sides:

{y = -2 x - 8

-5 y + 3 x = -25

Hint: | Perform a substitution.

Substitute y = -2 x - 8 into the second equation:

{y = -2 x - 8

3 x - 5 (-2 x - 8) = -25

Hint: | Expand the left hand side of the equation 3 x - 5 (-2 x - 8) = -25.

3 x - 5 (-2 x - 8) = (10 x + 40) + 3 x = 13 x + 40:

{y = -2 x - 8

13 x + 40 = -25

Hint: | Choose an equation and a variable to solve for.

In the second equation, look to solve for x:

{y = -2 x - 8

13 x + 40 = -25

Hint: | Isolate terms with x to the left hand side.

Subtract 40 from both sides:

{y = -2 x - 8

13 x = -65

Hint: | Solve for x.

Divide both sides by 13:

{y = -2 x - 8

x = -5

Hint: | Perform a back substitution.

Substitute x = -5 into the first equation:

{y = 2

x = -5

Hint: | Sort results.

Collect results in alphabetical order:

Answer: {x = -5 , y = 2

Answer:

The answer is Table B. Because only table B. doesn't have repeating x or domain.

Answer:

I think the answer might be b

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Given:

The interval, x = -2 to x = 0.

Required:

Average rate of change from x = -2 to x = 0.

SOLUTION:

From the graph,

If x = -2, f(-2) = 0.

If x = 0, f(0) = 4

Average rate of change = [tex] \frac{f(b) - f(a)}{b - a} [/tex]

Where,

[tex] a = -2, f(a) = 0 [/tex]

[tex] b = 0, f(b) = 4 [/tex]

Plug in the values into the formula:

[tex] = \frac{4 - 0}{0 -(-2)} [/tex]

[tex] = \frac{4}{2} = 2 [/tex]

Average rate of change from x = -2 to x = 0 is 2.

Answer:

y=-1/2x + 3

Step-by-step explanation:

Answer:

it is. Even you change the value of x, the value of y will also change. Since the y-intercept is 7, if we have 0 as our x value, then the y-value will change to 7. Whenever we change the x value, the y value will also change.

Step-by-step explanation:

Answer:

3.2ft long shadow

Step-by-step explanation:

In this problem we are given a ratio between the tree/shadow and woman/shadow therefore we are given 3 values and 1 unknown then we can use the Rule of Three to calculate the length of the shadow which we will refer to as x. The Rule of Three simply multiplies the diagonal values and divides by the third value in order to get the missing unknown like so...

55ft tall  <======>  32ft long shadow

5.5ft tall   <======>  x ft long shadow

(5.5 * 32) / 55 =  3.2ft long shadow

Finally, we can see that the woman's shadow would be a 3.2ft long shadow

Answer:

A or B I think

Step-by-step explanation:

Not entirely sure of it but ummm

Answer:

The answer is D (The last one)

Answer:

(d). c = 0.25d + 60

Step-by-step explanation:

$60.00 is a constant

$0.25 per Mb is a coefficient

(d). c = 0.25d + 60

Answer:

Ellie's age = 2 years

Genya's age = 58 years

The current age of Ellie would be 8 years old.

Given is that the sum of Ellie's and Genia's age is 60 and in 6 years, Genia will be eight times older than Ellie will be.

Assume that the current age of Ellie is [x] years and Genia is [y] years. Than, we can write -

x + y = 60

y = 60 - x

and

(y + 6) = 8(x + 6)

Put y = 60 - x , we get -

(60 - x + 6) = 8x + 48

66 - x = 8x + 48

9x = 66 - 48

9x = 18

x = 2

Ellie's current age = x + 6 = 8 years.

Therefore, the current age of Ellie would be 8 years old.

To solve more questions on functions, expressions and polynomials, visit the link below -

brainly.com/question/17421223

#SPJ2

Answer:

Yes

Step-by-step explanation:

Yes it is

No 1 is correct

No 2 is correct

No 3 is correct

No 4 is correct

and what i mean by correct is you answered it correct

I hope this helps you :)

Answer:

yes

Step-by-step explanation:

yes it is

it is all correct

Answer:true

Step-by-step explanation:

Answer:

A≈84536

Step-by-step explanation:

After 14 year span, the money in the account would be $84,535.62.

Given that,
Jaxon invested $58,000 in an account paying an interest rate of 2.7% compounded quarterly.

Compound interest is the interest on deposits computed on both the initial principal and the interest earned over time.

Here,
principal(P)  =  85000
rate(r) = 2.7% = 0.027
Time(a)  = 14 years,
n = 4  
Apply compound interest identity,
Amount = principal[1 + r/n]ⁿᵃ
Amount = 58000[ 1 + 0.027/4]⁴ˣ¹⁴
Amount = 84,535.62

Thus, After a 14-year span, the money in the account would be $84,535.62.

Learn more about compound interest here:
https://brainly.com/question/14295570
#SPJ2

Answer:

61 meters

Step-by-step explanation:

The perimeter of a rectangle is 2l + 2w, l being the length and w being the width. Substitute the known value into the equation and solve:

312 = 2(95) + 2w

312 = 190 + 2w

122 = 2w

w = 61

Answer:

MN = 10

Step-by-step explanation:

There is a scale factor of 2 [This means that the lengths of triangle ∆MPN are exactly 2 times larger than ∆SRQ], so 5 × 2 = 10.

Notice that each corresponding line is marked by a black mark perpendicular to the side. Since 2 corresponds to 4, and 3 corresponds to 6, 5 must correspond to 10. These triangles are similar as indicated by the marks so there is just a size difference. Because these two triangles are similar, the sides must be proportional.

∆MPN ~ ∆SRQ.

It can also be thought of as completing a set of proportional fractions:

4/2 = 6/3 = ?/5

4/2 = 2 → 6/3 = 2 → ?/5 = 2.

?/5 = 2, ? = 5 × 2 = 10.

Answer:

2 hours: 27 miles, 3 hours: 40.5 miles, 3.5 hours: 47.25 miles

Step-by-step explanation:

1.) If a hiker hikes 9 miles in 2/3 of an hour, he will hike 4.5 (Half of 2/3 is 1/3 and half of 9 is 4.5) miles in 1/3 of an hour and 13.5 miles per hour. (1/3 times 3 gives us a whole and 4.5 times 3 is 13.5)

2.) 2 hours: 13.5 * 2 = 27 miles

3.) 3 hours: 13.5 * 3 = 40.5 miles

4.) 3.5 hours: 13.5 * 3.5 = 47.25 miles

2 hours: 27 miles, 3 hours: 40.5 miles, 3.5 hours: 47.25 miles

Step-by-step explanation:

1.) If a hiker hikes 9 miles in 2/3 of an hour, he will hike 4.5 (Half of 2/3 is 1/3 and half of 9 is 4.5) miles in 1/3 of an hour and 13.5 miles per hour. (1/3 times 3 gives us a whole and 4.5 times 3 is 13.5)

2.) 2 hours: 13.5 * 2 = 27 miles

3.) 3 hours: 13.5 * 3 = 40.5 miles

4.) 3.5 hours: 13.5 * 3.5 = 47.25 miles

this is the guys above i just need points

Answer:

See Explanation

Step-by-step explanation:

[tex]1 - \sqrt{x} \neq \: 0 \\ \\ \therefore \: 1 \neq \sqrt{x} \\ \\ {1}^{2} \neq ({ \sqrt{x}) }^{2} \\ \\ 1 \neq \: x \\ [/tex]

Hence, x will take values other than 1.

Answer:

For the first one 25.925%

The second is 23.333%

The third is 27.27%

Let me know if this helps!

Answer:

the y-intercept it at 3

Answer:

(3,0) !

Step-by-step explanation:

The y intercept is where the given line touches the y axis (the vertical line of a coordinate plane)

I hope this helps!

Answer:

C.

Hope this helps.

Answer:

y=2x

it already gives you that in 2 hours four inches of snow has fallen. to find one hour you would basically just divide it in half

Answer: it’s 8 if that 29 is supposed to be a 39 otherwise i don’t know

Step-by-step explanation:

Answer:

I think it's commutative. ;-;

Step-by-step explanation:

Answer:

<A = 117degrees

Step-by-step explanation:

<A and <B are verticle angles, as given. Hence they will be of equal measures. It is given that <A = 5x -3, and <B = 4x + 21.

Using this, set up an equation;

<A = <B

5x - 3 = 4x + 21

Inverse operations,

5x - 3 = 4x + 21

    +3          +3

5x = 4x + 24

-4x   -4x

x = 24

Now substitute back in, to find the measure of <A,

5x - 3

x = 24

5 ( 24 ) - 3

120 - 3

117

Answer:

$6

Step-by-step explanation:

18-12=6

sksmskskssksksk

Answer:

$6

Step-by-step explanation:

18-12=6

Answer:

7 shirts

Step-by-step explanation:

290/40 = 7.25

But since you can't have 7.25 shirts, it's just 7.