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3 years ago

14

Yale is working out 2 hours in a gym. If he spends 21 minutes on stretching and 45 minutes of Jogging. What percentage of time d

oes she spend on lifting weights?

1 answer:

MArishka [77]3 years ago

6 0

54% of the time. 21 and 45 is 66. Two hours is 120. The you subtract

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Greta reads 1/2;1 pages per minute when she reads her English homework assignment. At this rate, how long does it take Greta to

faltersainse [42]

Answer:

It takes Greta around 2 hours to read 60 pages

Step-by-step explanation:

It takes Greta 2 minutes to read a page and 60 times 2 is 120 minutes which is equal to 2 hours

7 0

3 years ago

The sum of three consecutive terms in an arithmetic sequence is 27, and their product is 585. find the three terms.

sammy [17]

$\text{the three consecutive terms in an arithmetic sequence}\\a;\ a+d;\ a+2d\\\\\text{system of equals}\\\\ \left\{\begin{array}{ccc}a+a+d+a+2d=27\\a(a+d)(a+2d)=585\end{array}\right\\ \left\{\begin{array}{ccc}3a+3d=27&|:3\\a(a+d)(a+2d)=585\end{array}\right\\ \left\{\begin{array}{ccc}a+d=9&\to d=9-a\\a(a+d)(a+2d)=585\end{array}\right\\$
$\text{substitute to the second equation}\\\\a(a+9-a)(a+2(9-a))=585\\\\a(9)(a+18-2a)=585\\9a(18-a)=585\ \ \ |:9\\a(18-a)=65\\18a-a^2=65\ \ \ |\text{change the signs}\\a^2-18a=-65\\a^2-2a\cdot9=-65\ \ \ |+9^2\\\underbrace{a^2-2a\cdot9+9^2}_{(a-b)^2=a^2-2ab+b^2}=-65+9^2\\(a-9)^2=16\to a-9\pm\sqrt{16}\\a-9=-4\ \vee\ a-9=4\ \ \ |+9\\a=5\ \vee\ a=13\\\\d=9-5=4\ \vee\ d=9-13=-4$
$Answer:\ a=5;\ a+d=9; a+2d=13\ vee\ a=13;\ a+d=9;\ a+2d=5$

5 0

3 years ago

You are saving money for your first car. You have $2000 in your account. You can deposit $100 every week. You want at least $500

lisabon 2012 [21]

Answer:

5000 ≤ 2,000 - 100x

Step-by-step explanation:

You already have 2,000 saved up. You can deposit 100 every week.

The equation would go:

5000 ≤ 2,000 - 100x

5 0

3 years ago

What is the approximate volume of the cylinder with a height of 5 and a diameter of 4? round to the nearest tenths place

Vlad [161]

Formula for volume of cylinder:
V=πr²h
Here height, h= 5 units
Diameter, d= 4 units
So, radius, r= d/2 = 4/2 =2 units
Put values in formula.
V= (3.14)(2)²(5)
V=62.8 Cubic units

Answer: 62.8 cubic units

5 0

4 years ago

Draw graph of linear equation 4x -3y+ 12 = 0 use the graph drawn to find

Alexandra [31]

Y = 0 when x = -3
x = 0 when y = 4
I hope this helps

8 0

4 years ago