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zepelin [54]
3 years ago
5

Simplify: (x^2+2x-1)-(x+1)

Mathematics
2 answers:
n200080 [17]3 years ago
8 0

Answer:

x² + x - 2

Step-by-step explanation:

Simplify the following:

\longrightarrow (x² + 2x - 1) - (x + 1)

-(x + 1) = -x - 1:

x² + 2x - 1 - x - 1

Grouping like terms,

x² + 2x - 1 - x - 1 = x² + (2x - x) + (-1 - 1):

\longrightarrow x² + (2x - x) + (-1 - 1)

2x - x = x:

\longrightarrow x² + x + (-1 - 1)

-1 - 1 = -2:

\longrightarrow x² + x - 2

notka56 [123]3 years ago
6 0

Answer:

x^2+x-2

this is the answer bc the 2nd parentheses is being multiplied by the negative  sign meaning you need to subtract it from the 1st parentheses.

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A quadrilateral has two angles that measure 222° and 81°. The other two angles are in a ratio of 6:13. What are the measures of
hram777 [196]

\sf\huge\underline{\star Solution:-}

\rightarrow <u>Ratio of two angles are 6:13.</u>

So, let the one angle be \sf{6x} and another be \sf{13x.}

As we know that,

Sum of all interior angles of a quadrilateral = \sf\pink{360°.}

So let's sum up the given angles,

\rightarrow \sf{222°+81°+6x+13x \:=\:  360°}

\rightarrow \sf{303+19x \:=\:  360°}

\rightarrow \sf{19x \:=\:  360-303}

\rightarrow \sf{19x \:=\:  57}

\rightarrow \sf{x \:=\:  \frac{19}{57}}

\rightarrow \sf{x \:=\:  3}

Hence, \sf{x \:=\:  3}

So, First angle \sf{= \:6x\: = \:6×3 \:=} \sf\purple{18°.}

Second angle \sf{= \:13x\: = \:13×3 \:=} \sf\purple{39°.}

_________________________________

Hope it helps you:)

3 0
2 years ago
A basketball team wants to paint half of a free-throw circle grey. If the circumference of the free-throw circle is 30.77 feet,
Anton [14]

Answer:

37.69    (≈ 38 ft²)

Step-by-step explanation:

2πr = 30.77

r = 30.77 / (2 * 3.14) = 4.9

half of free-throw circle area: πr² / 2 = (3.14 * 4.9²) / 2 = 37.69    (≈ 38 ft²)

3 0
3 years ago
Is the gcf of any two ever numbers always even
Dmitry [639]
Yes, I believe it is 

3 0
3 years ago
How many 1/10 cubes are in 4 1/2
larisa [96]

Answer:

45 cubes

Step-by-step explanation:

There are 10 cubes in each 1. so 10 x 4 = 40. 1/2 of 10 is 5 so 40+5 = 45.

4 0
3 years ago
An animal shelter has 24 puppies. If the puppies are 32% of the total dog and cat population, how many dogs and cats are in the
34kurt

population *32% = 24

population *.32 = 24

population = 24/.32

population = 75

4 0
3 years ago
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