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3 years ago

Formula of quadratic function and their graph

Mathematics

1 answer:

Mama L [17]3 years ago

7 0

Answer:

-b +/- √b^2-4ac

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Emir's Ice Cream Shop sold 1 sundae with nuts and 7 sundaes without nuts. What is the ratio of the number of sundaes with nuts t

den301095 [7]

Answer:

1:7

Step-by-step explanation:

5 0

3 years ago

Hey everyone !

zhuklara [117]

Answer:

The measure of the largest angle is 120°

Step-by-step explanation:

Lets explain how to find the measure of an angle from the length of the

sides of the triangle

- We can do that by using the cosine rule

- If the three angles of the triangle are A , B , C, then the side opposite

to angle A is BC , the side opposite to angle B is AC and the side

opposite to angle C is AB, So to find measure of angle A use the rule

$cos(A)=\frac{(AB)^{2}+(AC)^{2}-(BC)^{2}}{2(AB)(AC)}$

Lets solve the problem

- Assume that the triangle is ABC where AB = 14 cm , BC = 10 cm and

AC = 6 cm

- We need to find the measure of the largest angle

- The largest angle is opposite to the longest side

∵ The longest side is AB

∴ The largest angle is C

By using the rule above

∴ $cos(C)=\frac{(AC)^{2}+(BC)^{2}-(AB)^{2}}{2(AC)(BC)}$

∵ AB = 14 cm , BC = 10 cm , AC = 6 cm

∴ $cos(C)=\frac{(6)^{2}+(10)^{2}-(14)^{2}}{2(6)(10)}$

∴ $cos(C)=\frac{36+100-196}{120}$

∴ $cos(C)=\frac{-60}{120}=-0.5$

∴ cos(C) = -0.5 ⇒ that means angle C is obtuse angle

∴ m∠C = $cos^{-1}(-0.5)=120$

* The measure of the largest angle is 120°

8 0

3 years ago

Read 2 more answers

HELP ASAP WILL MAKE YOU THE BRAINLIST

dusya [7]

Answers:

#1: A

#2:C

#4:D

8 0

3 years ago

Pentagon PQRST is drawn on a coordinate plane below. what rule best represents a dilation to create pentagon PQRST with a scale

otez555 [7]

Answer: $(x,y) \to (\dfrac12 x, \dfrac12 y)$

Step-by-step explanation:

Dilation is a transformation, in which the size of the image gets changed but not shape.

The rule of dilation with scale factor k and wither origin as center of dilation :

(x,y) → (kx, ky)

Here , $k= \dfrac12$ , center of dilation = Origin

Then, the rule best represents a dilation to create pentagon PQRST will be :

$(x,y) \to (\dfrac12 x, \dfrac12 y)$

5 0

3 years ago

Geometry math question no Guessing and Please show work thank you

Cloud [144]

here two given sides are 10 and 6,

We use the rule of triangle here:

sum of two sides> third side

checking for each option

Option A: AC=4

4+6>10, 10>10 (false)

So AC cannot be equal to 4, option A is answer.

3 0

3 years ago

Formula of quadratic function and their graph​

Formula of quadratic function and their graph