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3 years ago

7(90-x)-3(180-x)=30

2 answers:

8 0

180-x=3(90-x)+30

We move all terms to the left:

180-x-(3(90-x)+30)=0

We add all the numbers together, and all the variables

-x-(3(-1x+90)+30)+180=0

We add all the numbers together, and all the variables

-1x-(3(-1x+90)+30)+180=0

We calculate terms in parentheses: -(3(-1x+90)+30), so:

3(-1x+90)+30

We multiply parentheses

-3x+270+30

We add all the numbers together, and all the variables

-3x+300

Back to the equation:

-(-3x+300)

We get rid of parentheses

-1x+3x-300+180=0

We add all the numbers together, and all the variables

2x-120=0

We move all terms containing x to the left, all other terms to the right

2x=120

x=120/2

x=60

So sorry if it’s wrong I tried

Effectus [21]3 years ago

4 0

Answer:

The answer is x=15.

Step-by-step explanation:

1. You distributive

( You would multiply (7 times 90= 630), (7 times x= 7x) + (-3 times 180= -540), (-3 times x= -3x)= 30

2. Combine like terms

3. Solve

(I'm sorry if you don't get it)

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Need help with math hw please

Mazyrski [523]

Answer:

X = 34

Step-by-step explanation:

3x+44+x=180

4x+44=180

4x=136

x=34

hope this helps! :)

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3 years ago

Please only answer if you have a serious answer not just “do your work” I’m in 18 classes and my school won’t let me out of any

enyata [817]

9514 1404 393

Explanation:

1) 2x^2 -5x -3 = 0 . . . . standard form equation

To convert this to factored form, you can look for factors of the product (2)(-3) that have a sum of -5. It can help to start by listing the ways that -6 can be factored. Since we want the sum of factors to be negative, we want to have larger negative factors.

-6 = (1)(-6) = (2)(-3)

The sums of these factor pairs are -5 (what we want) and -1 (not relevant). We can call these factors p=1 and q=-6.

If a = 2 is the leading coefficient of our standard form quadratic, we want to use these factors in the form ...

(ax +p)(ax +q)/a . . . . . factored form of the quadratic

(2x +1)(2x +(-6))/2 . . . .fill in the values we know

(2x +1)(x -3) . . . . . . . factor 2 from the second binomial

So, the factored form of the quadratic equation is ...

(2x +1)(x -3) = 0 . . . . factored form equation

2) f(x) = x^2 +7x +10 . . . . standard form quadratic function

Using the thinking process described above, we are looking for factors of 10 that have a sum of 7. We know those are 2 and 5. So, the factored form of the function is ...

f(x) = (x +2)(x +5) . . . . . . factored form quadratic function

The leading coefficient is 1, so we have no further work to do.

Roots, x-intercepts, zeros

The graph attached below shows this function crosses the x-axis when x=-2 and x = -5. These values of x are variously called "roots", "x-intercepts", and "zeros" of the function. They are values for which the factors and the function are zero. (x+2=0 when x=-2, for example)

Solutions

Often, we are interested in solving the equation ...

f(x) = 0

For that equation, the solutions are the zeros or x-intercepts or roots. The graph attached also shows solutions for ...

f(x) = 4

Those solutions are x = -6 and x = -1. The function value is not zero for these values of x, so the roots, x-intercepts, or zeros are not solutions to this equation.

6 0

3 years ago

Nicole's getaway spa (ngs) has been so successful that nicole has decided to expand her spa by selling merchandise. she sells th

Margarita [4]

The journal entry will be prepared thus:

Date General Journal Debit Credit

2-Aug

Cash $540

Unearned Service Revenue $378

Sales Revenue $162

2-Aug

Cost of goods sold $105

Inventory $105

3-Aug

Accounts receivable $550

Sales revenue $550

3-Aug

Cost of goods sold $450

Inventory $450

6-Aug

Sales return (550/5) $110

Accounts receivable $110

6-Aug

Inventory $90

Cost of goods sold (450/5) $90

10-Aug

Unearned service revenue $126

Service Revenue $126

(378/3 = 126 each)

20-Aug

Cash $350

Sales revenue $350

20-Aug

Cost of goods sold $121

Inventory $121

22-Aug

Cash $440

Accounts receivable $440

<h3>What is a journal entry?</h3>

A journal entry is the act of recording any transaction, whether one that is economic or not.

An accounting diary that displays the debit and credit balances of a corporation lists transactions. Multiple recordings, each of which is either a debit or a credit, may be included in the journal entry.

Learn more about journal entry on:

brainly.com/question/14279491

#SPJ1

Aug.2 Sold a bundle of spa services with a merchandise basket. When sold separately, the spa service part of the bundle sells for $420 and the merchandise basket normally sells for $180. Together, the bundle was sold to Val Amy for cash at a selling price of $540 (total). Val booked a spa treatment for August 10, and she took the basket of goods with her. The goods had cost NGS $105.

Aug.3 Sold 5 identical items of merchandise to Cosmetics R Us on account at a selling price of $550 (total); terms n/30. The goods cost NGS $450.

Aug.6 Cosmetics R Us returned one of the five items purchased on August 3. The item could still be sold by NGS in the future and credit was given to the customer.

Aug.10 Val Amy used one of the three spa treatments she had purchased as part of the bundle sold to her on August 2.

Aug.20 Sold two at-home spa kits to Meghan Witzel for $350 cash. The goods cost NGS $121.

Aug.22 Cosmetics R Us paid its remaining account balance in full.

Prepare all journal entries

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1 year ago

Type no, one, or infinite to complete the statement. Type only lowercase letters. Do not type spaces in your answer. 3x - 4y = 6

julsineya [31]

Answer:infinite both can e simplifies

Step-by-step explanation:

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4 years ago

What is the rate of change of y to x A) -1/2 B) 4 C) -4 D) 1/2

NARA [144]

The answer is C. -4

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3 years ago

Read 2 more answers

7(90-x)-3(180-x)=30​

7(90-x)-3(180-x)=30