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3 years ago

Please help tysm !!!!!!!

Mathematics

1 answer:

Goryan [66]3 years ago

5 0

For concavity it’s concave up, x intercepts are x=1 and x=-3

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Austin walks 1/3 of the way to school and stopped to rest. Devyn walks 2/6 of the way to the school and stops to rest who travel

r-ruslan [8.4K]

Answer:

Austin and Devyn.

Step-by-step explanation:

1/3 and 2/6 are equal fractions.

7 0

3 years ago

What fraction of the total number of student choose football to be their favorite sport ??

DIA [1.3K]

Answer:

9/28

Step-by-step explanation:

number of people who chose football / number of people overall

9/28

7 0

3 years ago

What is the discriminate of the following quadratic equation? 4x^2 - 2x + 6 = 0

hram777 [196]

-92

Step-by-step explanation:

If a quadratic equation has the following form:

$ax^2 + bx + c =0, \;\;\;a \neq 0$

then its discriminant D is defined as

$D = b^2 - 4ac$

In our given quadratic equation, a = 4, b = -2 and c = 6, so its discriminant is

$D = (-2)^2 - 4(4)(6) = -92$

Note: The value of the discriminant D will determine the characteristics of the roots of the quadratic equation according to the following rules:

$D > 0,\;\;$ there will be 2 real roots

$D = 0,\;\;$ there will be 1 real root

$D < 0,\;\;$ there will be 2 imaginary roots

Hence our given quadratic equation will not have any real roots but only imaginary ones.

7 0

2 years ago

Find the difference quotient f(x)=2x^2+5x

expeople1 [14]

Step-by-step explanation:

Step 1: Find the difference quotient

$f(x+h) = 2(x+h)^2 + 5(x+h)$

$f(x+h) = 2(x^2+2xh+h^2)+5x+5h$

$f(x+h) = 2x^2+4xh+2h^2+5x + 5h$

$f(x) = 2x^2 + 5x$

Plug it into the formula

Difference Quotient: $\frac{f(x+h)-f(x)}{h}$

$\frac{2x^2+4xh+2h^2+5x+5h - (2x^2+5x)}{h}$

$\frac{2x^2 - 2x^2 + 4xh + 2h^2 + 5x - 5x + 5h}{h}$

$\frac{2h^2+4xh+5h}{h}$

Pull out an h

$\frac{h(2h+4x+5)}{h}$

$2h+4x+5$

Answer: $2h+4x+5$

6 0

3 years ago

Read 2 more answers

Use the formula v = u + at to find the velocity, when

SVETLANKA909090 [29]

Answer:

$v = u + at \\ v = 3 + (1.5 \times 7) \\ v = 3 +10.5 \\ \boxed{v = 13.5 \: m {s}^{ - 1}}$

<h3>13.5 m/s is the right answer.</h3>

8 0

3 years ago