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Rufina [12.5K]
3 years ago
15

I need help with this​

Mathematics
1 answer:
Fynjy0 [20]3 years ago
5 0

Answer:

a stationary sells 8pencil for the cost price of 10pencil find his gain percent

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One third of a number Y
vampirchik [111]

Answer:

⅓y

Step-by-step explanation:

\frac{1}{3}  \times y \\  =  \frac{1}{3} y

4 0
3 years ago
An animals heart beats 80 beats per minute how many minutes does it take to beat a million times?
Klio2033 [76]

The key calculation in this problem is figuring out <em>how many times 80 goes into 1,000,000</em>. I'll build up in steps here.

80 x 5 = 400. This gives us a building block on our way to 1,000,000. From here, we can go further and say that 400 x 5 = 2,000; that 2,000 x 5 = 10,000; and finally that 10,000 x 100 = 1,000,000. Altogether, starting from 80, that's

80 x 5 x 5 x 5 x 100 = 80 x 25 x 500 = <em>80 x 12,500</em>

So, since 80 goes into one million 12,500 times, it takes 12,500 minutes for the animal's heart to beat that 1,000,000 times.

4 0
3 years ago
Adrian is putting streamers across the ceiling of his dining room to decorate for his nephew’s birthday party. The ceiling is re
ale4655 [162]

Answer: hello there here is your answer:

17.5 feet

Step-by-step explanation:

Area of rectangle = Length x Width  

Length = Area/Width = 122.5 / 7 = 17.5 feet

hope this helps

have a god day bye

7 0
3 years ago
Read 2 more answers
HELP ME OUT PLEASE ITS DUE IN 5 MINS
mrs_skeptik [129]

The equation that can be used to find the number of wolves in the state on January 1 is w - 23 = 84

<h3>How to represent a situation with an equation?</h3>

A zoologist is recording the loss of wolves in her state. She notes the number of wolves, w, in the state on January 1. One year later, there were 84 wolves in the state, which is 23 fewer wolves than were in the state a year earlier.

The equation that can be used to find the number of wolves in the state on January 1 can be calculated as follows:

where

  • w = number of wolves in the state January 1.

Therefore, the equation to represent the situation is as follows:

w - 23 = 84

learn more on equation here: brainly.com/question/7411234

#SPJ1

5 0
1 year ago
(with steps please) Find the inverse Laplace transform, f(t), of the function: s/((s^2+9)*(s^2+16))
sveta [45]

Answer:

Step-by-step explanation:

Given is a Laplace transform of f(t) as

F(s) = \frac{s}{(s^2+9)(s^2+16)}

Let

\frac{s}{(s^2+9)(s^2+16)}=\frac{As+B}{(s^2+9)}+\frac{Cs+D}{(s^2+16)}

Solving we get \:s=s^3\left(A+C\right)+s^2\left(B+D\right)+s\left(16A+9C\right)+\left(16B+9D\right)

A+C=0:  B+D=0: 16A+9C=1 and 16B+9D=0

Solving B=0=D

A=\frac{1}{7} \\C=\frac{-1}{7}

Hence we have

f(t) = inverse Laplace of

\frac{1}{7}[ \frac{s}{(s^2+9)}-\frac{s}{(s^2+16)}]

=\frac{1}{7} (cos 3t-cos 4t)

4 0
4 years ago
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