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2 years ago

PLEASE HELP IM STUCK

Mathematics

1 answer:

mrs_skeptik [129]2 years ago

7 0

The number of outcomes possible from flipping each coin is 2, therefore;

The expression that can be used to find the number of outcomes for flipping 4 coins is: 2•2•2•2

<h3>How can the expression for the number of combinations be found?</h3>

The possible outcome of flipping 4 coins is given by the sum of the possible combinations of outcomes as follows;

The number of possible outcome from flipping the first coin = 2 (heads or tails)

The outcomes from flipping the second coin = 2

The outcome from flipping the third coin = 2

The outcome from flipping the fourth coin = 2

The combined outcome is therefore;

Outcome from flipping the 4 coins = 2 × 2 × 2 × 2

The correct option is therefore;

2•2•2•2

Learn more about finding the number of combinations of items here:

brainly.com/question/4658834

#SPJ1

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What numbers add to 32 and multiply to -80??

VARVARA [1.3K]

X+y=32
xy=-80

x+y=32
minus x both sides
y=32-x
sub for y

x(32-x)=-80
32x-x^2=-80
times both sides by -1
x^2-32x=80
minus 80 both sides
x^2-32x-80=0
use quadratic formula
where
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

a=1
b=-32
c=-80

x= $\frac{-(-32)+/- \sqrt{(-32)^2-4(1)(-80)} }{2(1)}$
x= $\frac{32+/- \sqrt{1024+320} }{2}$
x= $\frac{32+/- \sqrt{1344} }{2}$
x= $\frac{32+/- 8\sqrt{21} }{2}$
x=16+/-4√21

the numbers are
16+4√21 and 16-4√21

5 0

3 years ago

Thomas has constant speeds for both running and walking. When a down-escalator is moving, Thomas can run down it in 15seconds or

Andrew [12]

Answer:

amswer is 7mph

Step-by-step explanation:

i said so

8 0

3 years ago

What is the value of x when y=47 y=0.8x-17 PLS HELP ASAP

prohojiy [21]

Y= 0.8x - 17

x= (y+17)/0.8

substituting y= 47 in the equation

x= (47+17)/0.8
x= 64/0.8

x=80

4 0

4 years ago

Read 2 more answers

The product of 4.7 and 6.5 equals 30.55 what is the product of 4.7 and 0.65 4.7 and 65

lora16 [44]

Your answer is, 198.575 math might be off so let me check.

8 0

3 years ago

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zubka84 [21]

The HCF are

This is the common factor that is the highest that a group of numbers can have in common.

1. 6 and 15

factors of 6 = 1, 2, 3, 6

factors of 15: 1, 3, 5, 15

The HCF is the number they have in common = 3

2. 12 and 18

The factors of 12: 1, 2, 3, 4, 6, 12

The factors of 18: 1, 2, 3, 6, 9, 18

The HCF = 6

3. 15 and 24

Factors of 15: 1, 3, 5, 15

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

The HCF = 3

4. 24 and 36

The factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

The factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36

The HCF : 12

5. 30 and 48

The factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

The factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

The HCF = 6

6. 36 and 54

The factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36

The factors of 54: 1, 2, 3, 6, 9, 18, 27, 54

The hcf = 18

7. 32,40 and 56

The factors of 32: 1, 2, 4, 8, 16, 32

The factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

The factors of 56: 1, 2, 4, 7, 8, 14, 28, 56

The HCF is 8

8. 28,42 and 70

The factors of 28: 1, 2, 4, 7, 14, 28

The factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

The factors of 70: 1, 2, 5, 7, 10, 14, 35, 70

The HCF = 14

9. 30,75 and 90

The factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

The factors of 75: 1, 3, 5, 15, 25, 75

The factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

The HCF is 15