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Aleks [24]
3 years ago
12

Bobby has a sister named Abbey. Bobby’s sister Abbey is 4 years older than 1/3 of Bobby’s age. a) Write an expression for Abbey’

s age in terms of Bobby’s age, b. b) How old is Bobby if Abbey is 7 years old?
Mathematics
1 answer:
valentinak56 [21]3 years ago
7 0

Answer:

Step-by-step explanation:

a=1/3b + 4

7=1/3b+4

3=1/3b

b=9

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Rectangle
eduard

Options A and D are correct. The pair of measurements that could be the dimensions of rectangle B is 6 cm by 1.5 cm and 18 cm by 4.5 cm.

For us to get a scale copy of the dimension, we need to first find the scale factor as shown;

Given the measure of rectangle A:

  • Length= 12cm
  • Width = 3cm

To get all of the measurement pairs that could be the dimensions of Rectangle  B, we need to multiply the length and width by the same factor

Multiplying by 1/2

New length = 12 × 0.5 = 6cm

New width = 3 × 0.5 = 1.5cm

Hence 6cm by 1.5cm can be dimension of B

Multiplying by 1.5

New length = 12 × 1.5 = 18cm

New width = 3 × 1.5 = 4.5cm

Hence 18cm by 4.5cm can be dimension of B

Learn more here: brainly.com/question/24759485

5 0
3 years ago
(10x-5) +(9x + 6)<br> simplify the answer ASAP
san4es73 [151]
90x^2+15x-30 (hope this helps)
6 0
3 years ago
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An endurance athlete jogs at a rate of 8 miles per hour. How many minutes does it take for the athlete to jog 2.4 miles?
Vika [28.1K]

Answer:

0.3

Step-by-step explanation:

7 0
3 years ago
Multiply<br><br> 2.5<br> 5.4 =<br><br> ​(Type an integer or a simplified​ fraction.)
zepelin [54]

Answer:

Fractional form of 2.5 is 5/2.

5.4 as a fraction is 27/5.

4 0
3 years ago
How long will it take $5500 to grow to $7400 at an interest rate of 5% it the interest is compounded continuouslyRound the numbe
Thepotemich [5.8K]

Answer:

 5.93 years

Step-by-step explanation:

The continuous compounding formula tells you the amount after t years will be ...

  A = Pe^(rt) . . . . principal P compounded continuously at annual rate r for t years

  7400 = 5500e^(0.05t)

  ln(7400/5500) = 0.05t . . . . divide by 5500, take natural logs

  t = 20×ln(74/55) ≈ 5.93

It will take about 5.93 years for $5500 to grow to $7400.

8 0
3 years ago
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