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katrin2010 [14]
4 years ago
15

Simplify. 8xy + 12x - 6x + 13xy

Mathematics
1 answer:
Rus_ich [418]4 years ago
5 0
8xy + 12x - 6x + 13xy

8xy + 13xy + 12x - 6x

(8+13)xy + (12-6)x

21xy + 6x

(3x*7y) + (3x*2)

3x (7y + 2)
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Which equations are equivalent of requirements -1/4(x)+3/4=12? select all that apply.
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A marketing researcher conducts a test to determine whether the number of chocolate chips per cookie differs significantly acros
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Answer: the value for the associated test statistic is 1.2653

Step-by-step explanation:

Given that;

sample size one n₁ = 10

mean one x"₁ = 6.4

standard deviation one S₁ = 1.1

sample size two n₁ = 11

mean two x"₂ = 5.6

standard deviation one S₁ = 1.7

H₀ : μ₁ = μ₂

H₁ : μ₁ ≠ μ₂

Pooled Variance

sp = √( { [(n₁ - 1) × s₁² + (n₂ - 1) × s₂²] / (n₁ + n₂ - 2)} × (1/n₁ + 1/n₂))

we substitute

= √( { [(10 - 1) × (1.1)² + (11 - 1) × (1.7)²] / (10 + 11 - 2)} × (1/10 + 1/11))

= √( { [(9) × 1.21 + (10) × 2.89]  / (19) } × (0.1909))

= √({[ 39.79 ]  / 19} × (0.1909))  

= √( 2.0942 × 0.1909)

= √( 0.39978 )

= 0.63228

Now Test Statistics will be;

t = ( x"₁ - x"₂) / sp

we substitute

t = ( 6.4 - 5.6) / 0.63228

t = 0.8 / 0.63228

t = 1.2653

Therefore the value for the associated test statistic is 1.2653

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3 years ago
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liberstina [14]

Answer:

D) y+3=-1/4(x-8)


Step-by-step explanation:

cause y--3 = y3

4 0
3 years ago
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6 times 5 is 30 so 4 times 5 eaquls 20
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