All categories

2 years ago

Referred to as Checka. 3x + 7 + -x-1

Mathematics

1 answer:

densk [106]2 years ago

7 0

Answer:

2x+6

Step-by-step explanation:

you would get 2x+6 because you collect like terms and 3x minus 1x is 2x its minus because a negative is subtracting. and then 7 minus 1 is 6

You might be interested in

A certain stock exchange designates each stock with a one-, two-, or three-letter code, where each letter is selected from the 2

Sophie [7]

Answer: Option 'e' is correct.

Step-by-step explanation:

Since we have given that

Number of letters of the alphabet = 26

Number of letters in code :

One letter code, or two letter code, or three - letter code.

Since repetition of letters are allowed, then

if it is one letter code, the number of arrangement would be 26.

If it is two letter code, the number of arrangements would be

$26\times 26\\\\=26^2\\\\=676$

If it is three letter code, the number of arrangements would be

$26\times 26\times 26\\\\=26^3\\\\=17576$

So, Number of different stocks to uniquely designate with these codes would be

$26+676+17576\\\\=18278$

Hence, Option 'e' is correct.

4 0

3 years ago

Read 2 more answers

Kayla is running for charity. Her dad pledges to give her $0.50 per mile she runs. Her mom pledges to give her a flat donation o

amm1812

Answer:

10 miles

Step-by-step explanation:

Let m represent the number of miles Kayla runs. We want to find m such that ...

0.50m = 5.00

Divide by the coefficient of m:

m = 5.00/0.50 = 10

Kayla has to run 10 miles to get the same donation from both parents.

5 0

3 years ago

What is the highest degree in x³ - x²y² - y² + 2

kobusy [5.1K]

Answer:

X^3 is highest because of its exponet it’s higher than the rest

Step-by-step explanation:

3 0

2 years ago

I need help proving this ASAP

Ket [755]

Answer:

See explanation

Step-by-step explanation:

We want to show that:

$\tan(x + \frac{3\pi}{2} ) = - \cot \: x$

One way is to use the basic double angle formula:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ \sin(x) \cos( \frac{3\pi}{2} ) + \cos(x) \sin( \frac{3\pi}{2}) }{\cos(x) \cos( \frac{3\pi}{2} ) - \sin(x) \sin( \frac{3\pi}{2}) }$

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ \sin(x) ( 0) + \cos(x) ( - 1) }{\cos(x) (0) - \sin(x) ( - 1) }$

We simplify further to get:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{ 0 - \cos(x) }{0 + \sin(x) }$

We simplify again to get;

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = \frac{- \cos(x) }{ \sin(x) }$

This finally gives:

$\frac{ \sin(x + \frac{3\pi}{2} ) }{\cos(x + \frac{3\pi}{2} )} = - \cot(x)$

6 0

3 years ago

I WILL GIVE BRAINLIYEST HELP ASAP box has 1 red marble, 1 blue marble, and 4 green marbles of the same shape and size. Dan draws

likoan [24]

Answer:

Step-by-step explanation:

First find out how many marbles is in the box.

1 r + 1 b + 4 g = 6 marbles

4g/6

2/3 is the probability

6 0

3 years ago

Read 2 more answers

Referred to as Checka. 3x + 7 + -x-1​

Referred to as Checka. 3x + 7 + -x-1