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lesya692 [45]
3 years ago
13

I need help with this Question for school

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0

Answer:

77 = 1 x 77 or 7 x 11.

Step-by-step explanation:

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A computer company charges a flat fee of $250 for the computer and extra charges for any add-ons. a customer orders a computer w
zlopas [31]
250 + 2(25.50) + 105.50 = 250 + 51 + 105.50 = 406.50 <==
8 0
3 years ago
School a rented 1 van and 3 buses with 89 students. School b rented 4vans and 3 buses with. 131 students. Each van and each bus
iogann1982 [59]

Answer:18

Step-by-step explanation:

3 0
3 years ago
In 1990, 1000 adults were randomly selected and each was asked if they smoked, 300
Oduvanchick [21]

Answer:

 The proportion of smokers was higher in 1990 than in 2000

Step-by-step explanation:

Solution

Recall that,

The total number of sample 1 (n1) = 1000

Total  sample 2 number  (n2) = 2000

The number of favourable events (X1) = 300

The number of favourable events (X2) = 500

so,

p₁ = X₁/n₁ = 300/1000 = 0.3

p₂ = X₂/n₂ =500/2000 =0.25

α = 0.05

We are interested in testing the hypothesis.

The  hypothesis (Null) ....>  H₀ : p₁ = p₂

Alternate hypothesis------ > H₁ : p₁ > p₂

Thus,

P = X₁ + X₂/ n₁ + n₂

P =300 + 500/1000 +2000

P =800/3000

=0.2667

Now,

Z₀ = P₁ - P₂/√ P (1 -P) (1/n₁ + 1/n₂)

Z₀ =  0.3 - 0.25/√0.2667  (1 - 0.2667) (1/1000 + 1/2000)

Z₀ = 0.4999999999999999/√ 0.2667 (0.7333000000000001) (0.001 +0.0005)

Then,

Z₀ = 0.4999999999999999/√0.00029335666500000004

Z₀ = 2.9193

so,

zα/2 = z0.05/2 =z0.025

zα/2 = 1.6448536269514722

Now, we apply the decision rule:

Decision Rule: Reject the null hypothesis if the statistic value test is higher than the critical value 1.6448536269514722

The statistic value, 2.9193 is greater than the critical value 1.6448536269514722,  then we will reject the null hypothesis.

Therefore, the proportion of smokers was higher in 1990 than in 2000

3 0
3 years ago
Please someone help me ASAP
nasty-shy [4]

Answer:

A

Step-by-step explanation:

FV=PV(1+i)^t

2500(1+.03)^4

A

3 0
3 years ago
Read 2 more answers
No links pls
lutik1710 [3]

Answer:

D.) 9*pi >27

Step-by-step explanation:

9*pi = 28.2743338823...

28.2743338823... > 27

D.) 9*pi > 27 = True

Regards!

8 0
3 years ago
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