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tamaranim1 [39]
4 years ago
8

What is the difference when 6x3 − 8x2 − 9 is subtracted from 4x3 − 7x2 + 14?

Mathematics
1 answer:
kirill115 [55]4 years ago
7 0

Answer:

Step-by-step explanation:

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the Sunday newspaper costs $1.10 per issue delivered and the Saturday and weekday paper cost 30 cents per issue delivered. how m
Digiron [165]
0.30 x 6= 1.8
1.80+ 1.10 = 2.90
58÷2.90 = 20
20 weeks
8 0
3 years ago
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A survey found that in a sample of 75 families, 26 owned dogs. A survey done 15 years ago found that in a sample of 60 families,
statuscvo [17]

The difference in the proportions of both surveys goes from a maximum of 12.57% to a minimum of 4.76%.

Given that a survey found that in a sample of 75 families, 26 owned dogs, while a survey done 15 years ago found that in a sample of 60 families, 26 owned dogs, to find the 95% confidence intervals of the true difference in the proportions, the following calculation must be performed:

  • 75 = 100
  • 26 = X
  • 26 x 100/75 = X
  • 34.66 = X
  • 34.66 x 0.95 = 32.93
  • 34.66 x 1.05 = 36.40
  • 60 = 100
  • 26 = X
  • 26 x 100/60 = X
  • 43.33 = X
  • 43.33 x 0.95 = 41.16
  • 43.33 x 1.05 = 45.50
  • 45.50 - 32.93 = 12.57
  • 41.16 - 36.40 = 4.76

Therefore, the difference in the proportions of both surveys goes from a maximum of 12.57% to a minimum of 4.76%.

Learn more about maths in brainly.com/question/25989509

8 0
2 years ago
Which ordered pair does NOT satisfy the system x + 2y > 5 and 3x - y < - 2 ? *
Mazyrski [523]

Answer:

Answer is D

Step-by-step explanation:

5 0
3 years ago
What the answer to 3(x-4)=2(-2x+1)
lidiya [134]

Answer:x = 2

Step-by-step explanation:

Simplifying

3(x + -4) = 2(-2x + 1)

Reorder the terms:

3(-4 + x) = 2(-2x + 1)

(-4 * 3 + x * 3) = 2(-2x + 1)

(-12 + 3x) = 2(-2x + 1)

Reorder the terms:

-12 + 3x = 2(1 + -2x)

-12 + 3x = (1 * 2 + -2x * 2)

-12 + 3x = (2 + -4x)

Solving

-12 + 3x = 2 + -4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4x' to each side of the equation.

-12 + 3x + 4x = 2 + -4x + 4x

Combine like terms: 3x + 4x = 7x

-12 + 7x = 2 + -4x + 4x

Combine like terms: -4x + 4x = 0

-12 + 7x = 2 + 0

-12 + 7x = 2

Add '12' to each side of the equation.

-12 + 12 + 7x = 2 + 12

Combine like terms: -12 + 12 = 0

0 + 7x = 2 + 12

7x = 2 + 12

Combine like terms: 2 + 12 = 14

7x = 14

Divide each side by '7'.

x = 2

Simplifying

x = 2

4 0
4 years ago
The cost of admission to the Flemington Aquarium is $11.50 for each senior citizen, $14.75 for each adult, and $7.25 for each ch
abruzzese [7]

Answer:

Step-by-step explanation:

A) $51.5

B) two children tickets

Step-by-step explanation:

Given that the cost of admission for the Flemington Aquarium is $11.50 for each senior citizen, $14.75 for each adult and $7.25 for each child.

The cost of admission for the family of 3 adults and 1 child will be

(3 × 14.75) + (1 × 7.25)

44.25 + 7.25 = 51.5 dollars

What if two more tickets for admission are purchased for a total of $14.50?

Since there is no ticket of that amount, we can determine what type of tickets the family purchases by taking the amount of child tickets away from the amount. That is

14.5 - 7.25 = 7.25

The remaining money amount to child ticket again. We can therefore conclude that the two more tickets for admission purchased for a total of $14.50 are for 2 children tickets

hope this helped<3!!

3 0
3 years ago
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