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3 years ago

9

Find the lateral area of a rectangluar prism with ?

1 answer:

NikAS [45]3 years ago

4 0

Answer:

40 Squared units

Step-by-step explanation:

$A=2*2*4+2*2*6=40$

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A rectangle has a perimeter of 84 meters and a length of 35 meters. What is the width of the rectangle?

BaLLatris [955]

To find the perimeter of a rectangle, we can use this formula: $2L + 2W$
Where L is the length and W is the width.

We know the perimeter and we know the length and we want to find the width.
Substitute the values back into the formula.

2(35) + 2W = 84
70 + 2W = 84
2W = 14 <-- Subtract both sides by 70
W = 7 <-- Divide both sides by 2

So, width is 7 meters long.

8 0

3 years ago

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Can anyone help me with this please

Elenna [48]

I think that you multiply 2 with 4 to get 8 and then multiply 8 with 7 to get that number then add 2.75... to get the total.

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3 0

3 years ago

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Find the slope of the given line, if it is defined. 2x + 1 = 0

svlad2 [7]

Given :

A line 2x + 1 =0 .

To Find :

The slope of the given line .

Solution :

We know , slope of line is given by the tangent of the angle between the x-axis and the line .

Now, for line 2x + 1 =0 i.e $x=\dfrac{-1}{2}$ .

The line is perpendicular to x-axis and cuts the x-axis at $\dfrac{-1}{2}$ .

Therefore , the angle between the line and x-axis is $90^o$ .

So , slope $m=\tan\ 90^o$ i.e undefined .

Therefore , the slope of given line is not defined .

Hence , this is the required solution .

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3 years ago

James has a certain amount of money. If he buys $3$ pens and $2$ pencils, he will have $\$2$ left over. If he buys $2$ pens and

labwork [276]

The cost of pen and pencils are related to the number that can be bought

with a given amount of money.

<u /> $\underline{The \ ordered \ pair \ (a, \, b) \ is \ (6, \, 2)}$ <u />

Reasons:

The given parameters are;

If the number number of pens and pencils James buys = 3 pens and 2 pencils, the amount James will have left = $2

If the number of pens and pencils James buys = 2 pens and 3 pencils, the amount James will have left = $6

The amount of money Judith has = The amount of money with James

The number of pens and pencil James and Judith can buy = 6 pens and 6 pencils

The cost of one pen = a

The cost of one pencil = b

Required:

To find the ordered pair (a, b)

Solution:

Let <em>X</em> represent the initial amount of money James has, we get;

X - (3·a + 2·b) = 2...(1)

X - (2·a + 3·b) = 6...(2)

2·X = 6·a + 6·b...(3)

Therefore;

X = (6·a + 6·b) ÷ 2 = 3·a + 3·b

Which from equation (1) gives;

3·a + 3·b - (3·a + 2·b) = 2

3·a + 3·b - 3·a - 2·b = 2

3·b - 2·b = 2

b = 2

Subtracting equation (1) from equation (2) gives;

(X - (2·a + 3·b)) - (X - (3·a + 2·b)) = 6 - 2 = 4

-2·a - 3·b + 3·a + 2·b = 4

a - b = 4

a = 4 + b

∴ a = 4 + 2 = 6

a = 6

<u />

<u />

$\underline{The \ ordered \ pair \ (a, \, b) \ is \ (6, \, 2)}$ <u />

Learn more about word problems and simultaneous equations here:

brainly.com/question/14294864

8 0

2 years ago

There are 40 students in your class of which 23 are boys. What fraction of the students are girls?

Ronch [10]

Answer:17/23

Step-by-step explanation:

4 0

2 years ago

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