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3 years ago

Can anybody help me plz I really need help !!!!

Mathematics

1 answer:

kipiarov [429]3 years ago

4 0

Answer:

A) 75%

B) 76

Step-by-step explanation:

A) 39/52=0.75=75%

B)80x0.95=76

You might be interested in

In the figure BE||CD solve for x. Show work

nataly862011 [7]

Answer:

The value of x = 15.

Step-by-step explanation:

Given:

BE || CD

AE = 9

ED = 6

AB = x

BC = 10

To Find;

AB = x = ?

Solution:

BE || CD ......................{Given}

Basic Proportionality Theorem:

If a line is parallel to a side of a triangle which intersects the other sides into two distinct points, then the line divides those sides in proportion.

i.e

$\frac{AE}{ED} =\frac{AB}{BC}$ ...........{Basic Proportionality Theorem}

Substituting the given values we get

$\frac{9}{6} =\frac{x}{10}\\\therefore x = 10\times \frac{9}{6}\\\therefore x = \frac{90}{6}\\\therefore x = 15$

The value of x = 15.

5 0

3 years ago

10%

nignag [31]

Answer:

The population density for the village and the estate together is 112.5 people per square kilometer.

Step-by-step explanation:

The statement is incorrectly written. Correct form is described below:

<em>A village has an area of 6 square kilometers and a population density of 600 people per square kilometer. An estate stituated next to the village has a population of 800 and a population density of 400 people per square kilometer. Work out the population density, in people per square kilometer, for the village and the state together. </em>

Dimensionally speaking, the population density of the village and the estate together ( $r$ ), measured in people per square kilometer, is defined by this expression:

$r = \frac{n_{V}+n_{E}}{A_{V}+A_{E}}$ (1)

Where:

$n_{V}$ , $n_{E}$ - Population of the village and the estate, measured in people.

$A_{V}$ , $A_{E}$ - Area of the village and the estate, measured in square kilometers.

First, we find the population of the village:

$n_{V} = \frac{600\,\frac{p}{km^{2}} }{6\,km^{2}}$

$n_{V} = 100\,p$

Then, we determine the area of the estate:

$A_{E} = \frac{800\,p}{400\,\frac{p}{km^{2}} }$

$A_{E} = 2\,km^{2}$

If we know that $n_{V} = 100\,p$ , $n_{E} = 800\,p$ , $A_{V} = 6\,km^{2}$ and $A_{E} = 2\,km^{2}$ , then the population density of the village and the estate together is: