3 years ago

I need help!!!!!!!!!!!!!!!

Mathematics

1 answer:

jarptica [38.1K]3 years ago

6 0

Answer:

5m = 3890

Step-by-step explanation:

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The length of a rectangle is 2 cm longer than its width. if the perimeter of the rectangle is 40 cm , find its area.

rusak2 [61]

width = w

length = w +2

perimeter = 2L + 2w

40 = 2(w+2) + 2w

40 = 2w+4 +2w

40 = 4w+4

36=4w

w=36/4 = 9

with = 9

length = 9+2 = 11

area = l x w = 9*11 = 99 square cm

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3 years ago

How many terms are in the expression a3 + 3a2b - 4ab - 11b + 7?<br><br> 7<br> 4<br> 5<br> 6

rjkz [21]

There are 4 terms
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3 years ago

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skelet666 [1.2K]

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2 years ago

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Is (-a + b)² = a² - 2ab + b² right or wrong, and why?

antiseptic1488 [7]

Answer:

$\huge\boxed{\sf Right.}$

Step-by-step explanation:

$(-a+b)^2$

Let's apply the formula (x+y)² = x² + 2xy + y²

Here, x = -a and y = b

So,

= (-a)² + 2(-a)(b) + (b)²

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Hence, it has been proved that (-a + b)² = a² - 2ab + b².

$\rule[225]{225}{2}$

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2 years ago

In<br> given points.<br> 1. (10,4), (4, 15)<br> Find the slope of the line.

MrMuchimi

Answer:

$m = -\frac{11}{6}$

Step-by-step explanation:

Slope is rise over run.

$\frac{15-4}{4- 10}=\frac{11}{-6} = \boxed{-\frac{11}{6}}$

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2 years ago