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2 years ago

Please please help <33

Mathematics

1 answer:

VLD [36.1K]2 years ago

8 0

Answer:

100-mn

Step-by-step explanation:

He bought m books for n dollars each to know the amount of the books he bought,it means m×n=mn

He had $100 intially so to determine the amount left

100-the amount spent

100-mn

Therefore the answer is 100-mn

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You split $2000 between two savings accounts. Account a pays 2% annual interest and account b pays 5% annual interest. After one

sdas [7]

0.05x+0.02(2000-x)=77.5
0.05x+40-0.02x=77.5
(0.05-0.02)x=77.5-40
0.03x=37.5
X=37.5/0.03=1250 at 2%
2000-1250=750 at 5%

8 0

3 years ago

1. The position of a particle moving along a coordinate axis is given by: s(t) = t^2 - 5t + 1. a) Find the speed of the particle

zimovet [89]

Answer: $\left | 2t-5\right |,\ 2,\ 2t-5$

Step-by-step explanation:

Given

Position of the particle moving along the coordinate axis is given by

$s(t)=t^2-5t+1$

Speed of the particle is given by

$\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=\left | 2t-5\right |$

Acceleration of the particle is

$\Rightarrow a=\dfrac{dv}{dt}\\\\\Rightarrow a=2$

velocity can be negative, but speed cannot

$\Rightarrow v=\dfrac{ds}{dt}\\\\\Rightarrow v=\dfrac{d(t^2-5t+1)}{dt}\\\\\Rightarrow v=2t-5$

3 0

3 years ago

Help quick please

GaryK [48]

Answer:

Growth

Step-by-step explanation:

since the (1.05) is bigger than 1 it is growth but if it was lower then 1 it would be decay .

3 0

2 years ago

The triangular prism and the triangular pyramid shown have the same base and the same height. Use the drop-down menus to complet

Mila [183]

A triangular prism Vol. = area (A) of the triangular base × height (h) of prism
A triangular pyramid V = A × 1/3 h
So since they have same base A and h, the V of the pyramid will be exactly 1/3 the V of the prism

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2 years ago

Read 2 more answers

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kvasek [131]

Answer:

Step-by-step explanation:

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3 years ago