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alexdok [17]
3 years ago
12

HELP ME PLESA IM DESPO PAKJDCD PLS HELP

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0

Answer:

144 cm²

Step-by-step explanation:

A prism's surface has 2 triangles & 3 rectangles.

In both the triangles , length of :

Perpendicular = 4 cm

Base = 6 cm

So , Area of both triangles = 2(\frac{1}{2} * Base * Perpendicular) = 2(\frac{1}{2}* 6 * 4) = 24 cm^2

In the 3 rectangles ,

Length = 8 cm

Width = 5 cm

So , Area of the rectangles = 3( Length * Width) = 3(8 * 5) = 120 cm^2

Hence the total surface area of the prism is = 120 + 24 =144 cm²

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Find the equation of the line that passes through (9,-4) and (-1,-8).
Xelga [282]

Answer:

y =  \frac{2}{5} x - 7 \frac{3}{5}

Step-by-step explanation:

<u>Slope-intercept </u><u>form</u>

y= mx +c, where m is the gradient and c is the y-intercept.

\boxed{gradient =  \frac{y1 - y2}{x1 - x2} }

Gradient

=  \frac{ - 4 - ( - 8)}{9 - ( - 1)}

=  \frac{ - 4 + 8}{9 + 1}

=  \frac{4}{10}

=  \frac{2}{5}

Substitute the value of the gradient into the equation:

y =  \frac{2}{5} x + c

To find the value of the y-intercept, substitute a pair of coordinates.

When x= -1, y= -8,

- 8 =  \frac{2}{5} ( - 1) + c

- 8 =  -  \frac{2}{5}  + c

c =  - 8 +  \frac{2}{5}

c =  - 7 \frac{3}{5}

Thus the equation of the line is y =   \frac{2}{5} x - 7 \frac{3}{5}.

7 0
3 years ago
A company uses a computer to identify their 600 most loyal customers from its database and then surveys those customers to find
Lerok [7]

Answer:

The company uses it to identify their 600 MOST LOYAL customers. The sample is biased; the population is the loyal customers from it's database.

6 0
3 years ago
Shirl is planting a 4-foot flower border around the edge of her yard. She drew this diagram to show how it should look.
Galina-37 [17]

the area of the rectangle will be 240
4 0
3 years ago
Find the measure of angle x in the figure below:
Sav [38]

Answer:

70 degrees

Step-by-step explanation:

The angle opposite x and x itself are vertical angles, meaning that they have the same angle measure. Since the sum of the interior angles of a triangle is 180 degrees:

x+55+55=180

x+110=180

x=180-110=70

Hope this helps!

6 0
4 years ago
A bicycle is $199.99 and it is marked 5% off. What is the sale price of the bicycle?
vagabundo [1.1K]
<span>Thus, a product that normally costs $199 with a 5 percent discount will cost you $189.05, and you saved $9.95.</span>

<span>You can also calculate how much you save by simply moving the period in 05.00 percent two spaces to the left, and then multiply the result by $199 as follows: $199 x .05 = $9.95 savings.</span>

<span>Furthermore, you can get the final price by simply deducting .05 from 1 and multiplying it by $199 as follows: (1 - .05) x $199 = $189.05 final price. </span>

<span>If something costs $199 and is on sale for 5% off, then how much would it cost? Here we will show you how to calculate how much you save (discount) and how much you have to pay if something you want to buy is regularly $199, but is currently on sale for 5 percent off.

<span>$199
<span>SALE
</span>5% OFF</span>
There are many ways of calculating your discount and final purchase price. One way is to multiply 199 dollars by 5 percent, and then divide the answer by one hundred, then deduct that result from the original price. See illustration below:

+ Purchase Price = $199
- Discount (199 x 5)/100 = $9.95
<span>= Final Price 199 - 9.95 = $189.05

</span></span><span><span>Hope this helps you! <3</span></span>
4 0
4 years ago
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