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3 years ago

Solve 3.8 = p/3 - 7.2

1 answer:

7 0

19/5=p/3-36/5

Convert the decimals into fractions

15 x 19/5=(p/3-36/5) x 15

Multiply both sides by 15

57=5x-108

5x-108+108=57+108

Add 108 to both sides

5x=165

X=33

Answer

Hope this helps

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In 1928, when the high jump was first introduced as a women's sport at the Olympic Games, the winning jump for women was 70.0 in

sveta [45]

Answer: year 2194

Explanation:

1) Model the jump of the women:

i) initial jump = 70.0 in

ii) increase rate = 0.48% per year

iii) equation: h = 70.0(1 +0.0048)ⁿ

2) Model the jump of the men:

i) initial jump 86.5 inches.

ii) increase rate, 0.4%.

iii) equation: h = 86.5 (1 + 0.004)ⁿ

3) Equal the two equations (h = h) to find when the jumps will be equal:

i) 70.0(1 +0.0048)ⁿ = 86.5 (1 + 0.004)ⁿ

ii) 70.0(1.0048)ⁿ = 86.5 (1.004)ⁿ

ii) [1.0048ⁿ / 1.004ⁿ] = 86.5/70.0

iii) [1.0048/ 1.0040]ⁿ = 86.5/70.0

iv) n log (1.0048 / 1.0040) = log ( 86.5/70)

v) n = log (86.5/70) / log (1.0048/1.0040) ≈ 266

3) year = 1928 + 266 = 2194

That is in the year 2194

8 0

3 years ago

Read 2 more answers

13 of 15

Slav-nsk [51]

Answer:

(√30 - 1, 0)
(-√30 - 1, 0)

Step-by-step explanation:

Making the equation of the parabola :

⇒ y = a(x - h)² + k

⇒ y = (x + 1)² - 17 - 13

⇒ y = (x + 1)² - 30

x-intercepts have y = 0 :

0 = (x + 1)² - 30
(x + 1)² = 30

Taking the square root on each side :

√(x + 1)² = √30
x + 1 = ±√30
x = ±√30 - 1

The x-intercepts are :

(√30 - 1, 0)
(-√30 - 1, 0)

7 0

2 years ago

On Monday, Takira counted 75 splatters of bird droppings on her car. On Tuesday afternoon, she counted 21 more. What is the perc

Law Incorporation [45]

Answer:

28%

Step-by-step explanation:

percent change in the number of bird droppings = increase in splatters / splatters counted on Monday x 100

$\frac{21}{75}$ x 100 = 28%

3 0

3 years ago

On sale , the original price of every jacket in a store is reduced by 20% . Later , this sale price is further reduced by anothe

dimulka [17.4K]

Answer:

40%

Step-by-step explanation:

20% + 20% = 40%

Hope this helps!

4 0

3 years ago

6. The population of wolves is currently 250 in a forest. Scientists estimate that there should be a

prisoha [69]

Answer:

275

Step-by-step explanation:

250÷10=25 250+25=275

7 0

3 years ago