MATHEMATICS HIGH SCHOOL

Find the equivalent fraction of 3/7 having denominator 20​

Answers

Answer 1
Answer:

Answer:

x= the numerator

3/7 = x/20

7x=20*3

7x=60

x=60/7

equivalent fraction of 3/7 having denominator 20​: 3/7 = (60/7)/(20)

we check:

(60/7)/20= 60/7*20 = 60/140 =6/14 =3/7

Step-by-step explanation:

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HELLLLPPPPP two questions: AND I WILL GIVE YA THE BRAINLIESTTTTTquestion one: Marcos mixes 434 oz of lemonade. he wants to filll the 14 cups he has with equal amounts of lemonade.
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Answers

Answer:

First one 31 oz

Second one 144 pages

Step-by-step explanation:

First one

Divide 434 by 14 (434/14) to get how many oz in a cup since its 14 oz per cup and he has 434 oz

Second one

Add up all the cards since it says "all of his cards" (2592) and divide it by 18 since each page holds 18 cards

-18 - 14= whats the answer help

Answers

Answer:

-32 :) is the answer just think about it as your adding the sum of these numbers then putting a negative in front of it.

Step-by-step explanation:

A room is 45 m x 15 m. What is the least number of rectangle tiles required to pave the floor of the room, if each tile is 50 cm x 1m?

Answers

Hey Batala426,

If the room is 45m x 15m, then the total area is 675 metres squared.
Each tile is 50cm x 1m, so the area of each one is 0.5 metres squared.

675 / 0.5 = 1350

So the least number of tiles you need to pave the whole room is 1350 tiles.

Hope this helps!

Chen :D

What are the x-intercepts of the quadratic function?y = –x2 + 2x – 1
(Points : 1)      A. 2 and 1     B.  –2 and 1     C.  2 and –1    D.   1

Answers

y=-x^2+2x-1=-(x^2-2x+1)=-(x-1)^2\ \ \Rightarrow\ \ y \leq 0\n \nC.\ x=2\ \ \Rightarrow\ \ \ y=-(2-1)^2=-1\ \ \Rightarrow\ \ (2;-1)\n \nAns.\ C

A = 12, b = ?, c = 15a = ?, b = 7, c = 25
a = 8, b = 15, c = ?
a = 24, b = ?, c = 26

Answers

1: b=9
2: a= 24
3: c=17
4: b=10

Use a^2 + b^2 = c^2 to answer.
1: 12^2 (144) + b = 15^2 (225)
225-144 = 81
Square root 81 = 9
2: a + 49 = 625
625-49=576
Square root 576 = 24
3: 64 + 225 = 289
Square root 289 = 17
4: 576 + b = 676
676-576 = 100
Square root 100 = 10

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3?f(x) = (x + 3)2 + 3
f(x) = (x + 3)2 − 6
f(x) = (x + 6)2 + 3
f(x) = (x + 6)2 − 6

Answers

By completing the square, the second orderpolynomial in vertexform f(x) = (x + 3)² - 6 is equivalent to the polynomial in standardform f(x) = x² + 6 · x + 3. (Correct choice: B)

How to find the vertex form of the second order polynomial by algebraic means

In this question we must change the form of the second orderpolynomial from standardform into vertexform. A common method consists in completing the square, that is, to transform part of the polynomial into a perfect squaretrinomial. Now we proceed to find the vertexform of the expression:

1) x² + 6 · x + 3     Given

2) x² + 6 · x + 9 - 6     Modulative property/Existence of additive inverse/Definition of addition

3) (x + 3)² - 6     Associative property/Perfect square trinomial/Result

By completing the square, the second orderpolynomial in vertexform f(x) = (x + 3)² - 6 is equivalent to the polynomial in standardform f(x) = x² + 6 · x + 3. (Correct choice: B)

To learn more on second order polynomials in vertex form: brainly.com/question/20333425

#SPJ5

Answer:

B. f(x) = (x + 3)2 − 6

Step-by-step explanation:

I just did this for "completing the square". Hope this helped!
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