3 years ago

Who can help.? Feel lazy to do my homework

Mathematics

1 answer:

irinina [24]3 years ago

7 0

-189 is the answer to your math question

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In a clothing store there are 12 red dresses, 5 blue shirts, and 8 black hats. Write the ratios:

lisabon 2012 [21]

Answer:

Step-by-step explanation:

Just guessed.

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2 years ago

How do you identify the opposite and the absolute value of a rational number

zhenek [66]

Opposite:
Just change the sign.
If it's a positive number, make it negative.
If it's a negative number, make it positive.

Absolute value:
Even easier.
Just throw away the sign, and you have it.

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3 years ago

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98. What is the sum of the first 27 terms in the arithmetic series 25 +19+13 + ...?

jeka57 [31]

Answer:

sum of the first 27 terms = -1431

Step-by-step explanation:

<h3>arithmetic series sum of the first n terms formula:</h3>

$s_{n} = \frac{n}{2} (2a + (n - 1)d)$

n = 27 terms

first term, a = 25

common difference, d = 19 - 25 = -6

substitute the values into the formula

$s_{27} = \frac{27}{2} (2(25) + (27 - 1)( - 6))$

$s_{27} = 13.5(50 + 26( - 6))$

$s_{27} = 13.5(50 - 156)$

$s_{27} = 13.5( - 106)$

$s_{27} = - 1431$

4 0

2 years ago

The sum of two angles is 90°. The difference of twice the larger angle and the smaller angle is 105º. The system of linear equat

denpristay [2]

Answer:

x = 65, y = 25

Step-by-step explanation:

<u>Given system of linear equations:</u>

x + y = 90
2x - y = 105

<u>Add up the equations to eliminate y:</u>

x + 2x = 90 + 105
3x = 195
x = 65

y + 65 = 90
y = 90 - 65
y = 25

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2 years ago

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Carol bought a coloring book. It is 11 inches long and 8 inches wide. What is the diagonal length of the book?

Leokris [45]

Answer:

13.6 inches

Step-by-step explanation:

We can use Pythagorean theorem: $c=\sqrt{a^{2} +b^{2} }$

Let c be the diagonal length, a for length, and b for width.

Substitute the values.

$c=\sqrt{11^{2}+8^{2} }$

c=13.6 inches

7 0

3 years ago