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3 years ago

Could someone help with #15?

Mathematics

1 answer:

sweet [91]3 years ago

8 0

The total S divided by 8 was 5 more than the if the total S was divided by 10.

So we have S/8 +5 = S/10 and by switching the equation around you get S/10 = S/8+5

The correct answer is B.

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Problem Select three ratios that are equivalent to 11:111:111, colon, 1. Choose 3 answers: Choose 3 answers: (Choice A) A 1:111:

fomenos

Answer:

(Choice B) B 22:222:222, colon, 2

(Choice C) C 55:555:555, colon, 5

(Choice D) D 99:999:999, colon, 99

Step-by-step explanation:

Three ratios that are equivalent to 11:111:111

(Choice A) A 1:111:111, colon, 11

Dividing through by 1

= 1 : 111 : 111

(Choice B) B 22:222:222, colon, 2

Dividing through by 2

= 11 : 111 : 111

(Choice C) C 55:555:555, colon, 5

Dividing through by 5

= 11 : 111 : 111

(Choice D) D 99:999:999, colon, 99

Dividing through by 9

= 11 : 111 : 111

(Choice E) E 110:10110:10

Dividing through by 10

11 : 1011 : 1

The equivalent ratios are:

(Choice B) B 22:222:222, colon, 2

(Choice C) C 55:555:555, colon, 5

(Choice D) D 99:999:999, colon, 99

5 0

3 years ago

How could I solve y= 2x^2 + 16x - 66 By using quadratic formula?

Slav-nsk [51]

Answer: the solutions are

x = 3 or x = - 11

Step-by-step explanation:

The given quadratic equation is expressed as

y = 2x² + 16x - 66 = 0

The equation is already in the standard form of ax² + bx + c

The general formula for solving quadratic equations is expressed as

x = [- b ± √(b² - 4ac)]/2a

From the equation given,

a = 2

b = 16

c = - 66

Therefore,

x = [- 16 ± √(16² - 4 × 2 × - 66)]/2 × 2

x = [- 16 ± √(256 + 528)]/4

x = [- 16 ± √784]/4

x = (- 16 + 28)/4 or x = (- 16 - 28)/4

x = 12/4 or x = - 44/4

x = 3 or x = - 11

4 0

3 years ago

Read 2 more answers

Find the product. 4x - 3y(-2x 2y)

liubo4ka [24]

(4x + 3y)² =

(4x)² + 2 (4x) (3y) + (3y)² = 

16x² + 24xy + 9y²

4 0

3 years ago

Read 2 more answers

1.Is the sequence geometric? If so, identify the common ratio.

34kurt

1. The correct answer among the choices provided is the first option. It is a geometric sequence and the common ratio is 2.
2. Fifth term in the geometric sequence is 405. The pattern in this sequence is to triple the last term to get the next answer.

3 0

3 years ago

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Find the area and the circumference of a circle with a diameter of 17cm

frosja888 [35]

Answer:

Step-by-step explanation:

d = 17 cm

r = 17/2 = 8.5 cm

Circumference of circle = πd

= 3.14 * 17

= 53.38 cm

Area of circle = πr²

= 3.14 * 8.5 * 8.5

= 226.865 cm²

6 0

3 years ago