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dexar [7]
3 years ago
7

I need help with number 4

Mathematics
2 answers:
katen-ka-za [31]3 years ago
8 0

Answer:

1 1/5

Step-by-step explanation:

6 * 1/5

6/1 * 1/5

6/5

Changing to a mixed number

5 goes into 6    one time with 1 left over

1 1/5

Minchanka [31]3 years ago
3 0

Answer:

6 over 5 also know an 1 and one fifth

Step-by-step explanation:


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Factorise <br> a) 3x^2-7x+2<br> b)2x^2-x-3<br> c)3x^2-16x-12
Luba_88 [7]

Answer: Answers are in the steps read carefully!

Step-by-step explanation:

A) 3x^2 - 7x + 2 To factor this polynomial, you have to find two numbers that their product is 6 and their sum is -7.  The numbers -1 and -6 works out because -6 times -1 is 6  and -6 plus -1 is -7.

Now rewrite the polynomial as

3x^2 - 1x - 6x + 2   Now group it  

(3x^2 - 1x) (-6x+2)  Factor it by groups

x (3x -1)  -2(3x -1)    Now factor out 3x-1  

(3x -1) (x-2)  Done!    

B)  2x^2 - x -3     Now the same way.You will have two numbers that  their product is -6 and their sum is -1. You may be wondering how I get -6 .I get -6 by multiply the leading coefficient  2 by the constant -3.  The numbers -3 and 2 works out. Because -3 times 2 is -6 and -3 plus 2 is -1.

 Rewrite the polynomial as

2x^2 +2x - 3x -3     GRoup them and factor them

(2x^2 + 2x)  (-3x-3)  

2x(x+1) -3(x+1)  Factor out x+1

(x+1) (2x -3) Done!  

C) 3x^2 - 16x - 12   Find two numbers that their product is -36 and their sum is -12. The numbers -18 and 2 works out because -18 times 2 is -36 and -18 plus 2 is -16.

Rewrite the polynomial

3x^2 +2x -18x - 12   GRoup them

 (3x^2 + 2x)   (-18x - 12)   Factor them

x (3x +2) -6(3x +2)  Factor out 3x+2

(3x+2) (x -6)  Done !

6 0
3 years ago
Can someone solve Pythagorean theorem​
Ad libitum [116K]

Answer:

48 units

b= 48 units

Step-by-step explanation:

pythag is a^2+b^2=c^2

we have a and c

so substitute them in

14^2+b^2=50^2

now you can solve

196+b^2=2500

subtract 196 from both sides

b^2=2500-196

subtract

2500 - 196 = 2304

b^2=2304

solve for the square root

square root of 2304= 48

therefore b= 48 units

5 0
2 years ago
If you were given the data set $s $10, $10, $12, $13, $15, which measure of central
Katarina [22]

Answer:  Mode

<u>Step-by-step explanation:</u>

The given data set is:    10, 10, 12, 13, 15

Mean is the average - find the sum of the data set and divide by the number of terms in the set: \dfrac{10+10+12+13+15}{5} =\dfrac{60}{5}=12

Mean = 12

Median is the middle term (when the data set is ordered from least to greatest).

Median = 12

Mode is the term that appears the most.

Mode = 10

Since you want to show that the prices are low, you would choose the lowest value.  10 is lower than 12, so the Mode is lower than either the Mean or the Median.

7 0
3 years ago
In a math class with 23 students, a test was given the same day that an assignment
ddd [48]

Answer:

8

Step-by-step explanation:

23 students -15 students =8students

3 0
3 years ago
For f(x) = 3x^2 – X+5, 2f (-3) - f(4)=
Alenkinab [10]

Answer:

3x^2-x+5.2f\left(-3\right)-f\left(4\right) =

3x^2-x-19.6f

Step-by-step explanation:

3x^2-x+5.2f\left(-3\right)-f\left(4\right)

=3x^2-x-5.2f\cdot \:3-f\cdot \:4

=3x^2-x-15.6f-4f

=3x^2-x-19.6f

8 0
3 years ago
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