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3 years ago

Find slope (3,4),(-4,-5)

Mathematics

1 answer:

kotykmax [81]3 years ago

4 0

formula for slope is given by

$slope = \frac{y2-y2}{x2-x1}$

we are given two points (3,4) and (-4,-5)

plugging in the formula we get,

$slope = \frac{-5-4}{-4-3}$

slope = 9/7

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What sum of money amounts to rupees 8700 in 3 years at the rate of 24 % per annum

Zina [86]

Given:

Amount = 8700

Time = 3 years

Rate of interest = 24% per annum

To find:

The principal values.

Solution:

Formula for amount:

$A=P\left(1+\dfrac{r}{100}\right)^t$

Where, A is amount, P is principal, r is the rate of interest and t is the number of years.

Putting $A=8700,r=24,t=3$ , we get

$8700=P\left(1+\dfrac{24}{100}\right)^{3}$

$8700=P\left(1+0.24\right)^{3}$

$8700=P\left(1.24\right)^{3}$

$8700=1.906624P$

Divide both sides by 1.906624.

$\dfrac{8700}{1.906624}=P$

$4563.0391729=P$

$P\approx 4563.04$

Therefore, the principal value is about 4563.04.

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3 years ago

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Natalka [10]

Answer:

Step-by-step explanation:

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3 years ago

Lian has $1.00. She has only nickels and dimes. Lian has twice as many dimes as nickels. How many dimes does she have?

Anna11 [10]

Answer: 8

Step-by-step explanation:

Given

Lian has $\$1.00$ and she has twice as many dimes as nickels

Suppose she has $x$ nickels

So, the number of dimes is $2x$

Nickel is equivalent to 5 cents and dime is equivalent to 10 cent

$\therefore \ x(0.05)+2x(0.1)=1\\\Rightarrow 0.05x+0.2x=1\\\Rightarrow 0.25x=1\\\Rightarrow x=4$

Therefore she has 8 dimes with her.

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3 years ago

Out of 28 students in a class, 7 have blue eyes. What is the probability a student picked at

mars1129 [50]

Answer:

3/4

Step-by-step explanation:

7/28 have blue eyes

So 28-7=21

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21/28 simplified=3/4

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3 years ago

Read 2 more answers

Questlon 3 of 10

amm1812

Answer:

b)A cube with side lengths of 4 feet has a volume of 64cubic feet

Step-by-step explanation:

volume=length×width×height

=4×4×4

=64feet³

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3 years ago