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2 years ago

How many solutions does the following equation haves? -3x+9-2x=-12-5x

Mathematics

1 answer:

Mashcka [7]2 years ago

4 0

Answer:

no solution

Step-by-step explanation:

-3x+9-2x=-12-5x\

-5x+5x=-12-9

0=-21

which is impossible.

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What multiple of 7 is a factor of 49

irga5000 [103]

The first and seventh multiples of 7 are factors of 49. (7 and 49)

5 0

3 years ago

A group of Metropolis Middle School students volunteered to build a new city playground. A local pizzeria donated 20 large pizza

lukranit [14]

Answer:

so so sorry if this anwser is wrong hope this helps

Step-by-step explanation:

number of vounteers number of pzzia per volunteer

1 20

2 10

5 0

10 -10

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40 -40

7 0

2 years ago

Find the term indecent of x in the expansion of (x^2-1/x)^6

Mars2501 [29]

By the binomial theorem,

$\displaystyle \left(x^2-\frac1x\right)^6 = \sum_{k=0}^6 \binom 6k (x^2)^{6-k} \left(-\frac1x\right)^k = \sum_{k=0}^6 \binom 6k (-1)^k x^{12-3k}$

I assume you meant to say "independent", not "indecent", meaning we're looking for the constant term in the expansion. This happens for k such that

12 - 3k = 0 ===> 3k = 12 ===> k = 4

which corresponds to the constant coefficient

$\dbinom 64 (-1)^4 = \dfrac{6!}{4!(6-4)!} = \boxed{15}$

3 0

2 years ago

Rocco spent 20% of his savings on clothes. He brought $50 clothes. How much did he have in the beginning

Anna71 [15]

Howdy,

20% is also 1/5 in fraction form, which tells us he spent 1/5 of his money on clothes:

So to solve, we have to multiply 50 by 5:

50 x 5 = 250

Rocco's original savings was $250

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8 0

3 years ago

Read 2 more answers

What is the measure of PSQ in degrees? Angle PSR measures 99°.

11111nata11111 [884]

we know that

Step 1

Find the value of x

m∠PSR= $99$ °

m∠PSR= $(3x+18)+(9x-27)$ °

$99 =(3x+18)+(9x-27) \\ 99=12x-9\\ 12x=108\\ x=9degrees$

Step 2

Find the value of m∠PSQ

m∠PSQ= $(3x+18)$

m∠PSQ= $(3*9+18)$

m∠PSQ= $45$ °

therefore

the answer is the option

C) 45 degrees

8 0

3 years ago

Read 2 more answers