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ololo11 [35]
2 years ago
14

50 POINTS!!! MUST BE CORRECT OR I WILL DELETE IT AND REPORT IT!

Mathematics
2 answers:
Crank2 years ago
8 0

Answer:

x=9

Step-by-step explanation:

-3 + 5x = 42

add 3 to both sides

5x=45

divide both sides by 5

x=9

Tems11 [23]2 years ago
6 0

Answer:

x=9

Step-by-step explanation:

You might be interested in
What is the value of the expression? Show all work.<br> -9 - 6 + 8 ÷ -4 * -2?
nadya68 [22]

Step-by-step explanation:

To do Order of Operations, we need to go with the order of the formula, PEMDAS.

P= Parenthesis

E= Exponents

M= Multiply (Whatever Comes First in Equation: M and D)

D= Divide

A= Addition (Whatever Comes First in Equation: A and S)

S= Subtraction

---------------------------------------------

So, we need to start with parenthesis, there aren't any, so we move on to Exponents.

There are no Exponents either, so we start with division, then multiplication.

(We always have to go left to right).

So,

-9 - 6 + <u>8 / -4</u> x -2

-9 - 6 + <u>-2 x -2</u>

-9 - 6 + 4

Our problem is:

-9 - 6 + 4

We do subtraction, then addition. (Left to Right)

<u>-9 - 6 </u>+ 4

<u>-15 + 4</u>

-11.

Therefore, the answer is -11.

(Corrected)

7 0
3 years ago
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
Help me find the equation for the dimensions of a window, please!
Zinaida [17]
On the sheet, it's not even asking you for the dimensions.
It's just asking you to set up the <em>equation that you would use</em>
to find the dimensions.  That's a great way to do it, because
nobody actually needs the answers, the whole thing is only
meant to help you learn HOW to find them.
==========================================
Call the width of the window 'W' .

We know that the length is 5 feet more than the width, so the length is (W + 5).

The area is (length times width).

Area = (W + 5) times (W).

36 = (W + 5) W

36 = W² + 5W

Subtract 36 from each side:

W² + 5W - 36 = 0

That's choice-4 .


5 0
3 years ago
BRAINLIESTT ASAP! PLEASE HELP ME :)<br> thanks!
fredd [130]

Answer:

A is correct, x=7, AB=20

Step-by-step explanation:

All of the options say x=7 so you can just input 7 into 4x-8 to find AB

4(7)-8=AB

28-8=AB

20=AB

Hope this helps, please mark brainliest :)

3 0
3 years ago
WILL MARK BRAINLIEST! PLEASE HELP!<br> Write 206 in base 7
ankoles [38]

Answer:

wut

Step-by-step explanation:

6 0
3 years ago
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