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3 years ago

7

Solve the quadratic equation for x in the simplest equation -6x^2+15x+9=0

1 answer:

-BARSIC- [3]3 years ago

8 0

Answer:

Step-by-step explanation:

-6x²+15x+9=0

divide by -3

2x²-5x-3=0

2x²+x-6x-3=0

x(2x+1)-3(2x+1)=0

(2x+1)(x-3)=0

either x=-1/2

or x=3

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Help<br> Simplify. 2−4÷2+2^3

Radda [10]

Hey there!

If we use pemdas:

P - Parentheses
E - Exponents
M - Multiplicatiom
D - Division
A - Addition
S - Subtractiom

We know we have to evaluate the exponent first. Two to the rid power is equal to 8. Therefore, we have:

2 - 4/2 + 8

Next, we do the division. -4/2 = -2, so we have:

2-2 + 8 = 0 + 8 = 8

Hope this helps!

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4 years ago

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If the area of a rectangle is 12cm2 what could be its length and width

jasenka [17]

There are many different combinations.

We just need two numbers that when you multiply them you get 12.

We can have:

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Length = 12
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4 years ago

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How to comeplete each table of values

yanalaym [24]

Just subtract 4 each time.

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3 years ago

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1 Draw the Venn diagram below. Write the numbers 8, 9, 10, 11, 12 and 13 in the correct places on your Venn diagram. multiples o

iragen [17]

Venn diagram is the representation of set in a graphical form

<em>See attachment for the set of multiples of 2, 13, 3 and 6 </em>

Given

$Numbers = \{8,9,10,11,12,13\}$

Let

<em /> $A \to$ <em> Multiples of 2</em>

<em /> $B \to$ <em> Multiples of 8</em>

<em /> $C \to$ <em> Multiples of 6</em>

<em /> $D \to$ <em> Multiples of 13</em>

<em />

First, we split the numbers in set of the given multiples

$A: \{8, 10, 12\}$

$B = \{8\}$

$C =\{12\}$

$D = \{13\}$

Digit 9 does not belong to any of these set

<em />

<em>Set B and set C are proper subsets of set A.</em>

This means that sets B and C will be inside set A in the Venn diagram

So, we have:

$A = \{B,10,C\}$

Since 9 does not belong to any of the sets, it will not be inside any of sets A, B, C or D

See attachment for the required Venn diagram

Read more about Venn diagrams at:

brainly.com/question/1605100

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2 years ago

Write the formula to calculate median class

Vikki [24]

This formula is used to find the median in a group data which is located in the median class. Median, m = L + [ (N/2 – F) / f ]C

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