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Artemon [7]
3 years ago
15

Áp dụng quy tắc khai phương 1 tích hãy tính

Mathematics
1 answer:
Zinaida [17]3 years ago
6 0

Answer:

Please write out in english

Step-by-step explanation:

I cannot help unless you can translate.

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4y-4=_____<br> 4(y+1)=___<br> 2+4y=____
34kurt
If they are looking to have them all simplified, this is how they should look. 

4y - 4
4y + 4
4y + 1
3 0
3 years ago
Emilio asked his aunt for $20 to buy supplies for his lemonade stand. Once his stand opened he made $40 a day
FrozenT [24]

The equation that represents profit is $40x - $20.

The profit after 5 days in business is $180.

The profit after 10 days in business is $380.

The profit after 10 days in business if revenue is $45 is $430.

<h3>What is profit? </h3>

Profit is total revenue less total cost.

Profit = total revenue - total cost

Profit = $40x - $20

Where:

x = number of days

<h3>What is the total profit after 5 days and 10 days? </h3>

$40(5) - $20

= $200 - $20

= $180

$40(10) - $20

$400 - $20

$380

<h3>What is total profit if revenue is $45? </h3>

$45(10) - $20

= $450 - $20

= $430

To learn more about profit, please check: brainly.com/question/26181966

8 0
2 years ago
A pharmacist has a 12% solution and a 20% solution of boric acid. How much of each should she use to make 80 grams of a 15% solu
nlexa [21]

Step-by-step explanation:

If x = the amount of 12% and y = the amount of 20%, then x + y = 80

Since we need 80 grams of 15%, 80(.15) = 12.

We are given that .12x + .20y = 12.

We can solve the first equation for x or y. Let's do x.

x = 80 - y

.12(80 - y) + .20y = 12

9.6 - .12y + .20y = 12

.08y = 2.4

y = 30

x = 80 - 30 = 50

5 0
3 years ago
Read 2 more answers
How do you write 900 in expanded form
Dvinal [7]
Well its
900+0+0
basically
like if it was
9,234
then it would be
9000+200+30+4
7 0
3 years ago
Read 2 more answers
Solve the equation for all values of x by completing the square.<br> x2 + 21 = 10x
sashaice [31]

Answer:

oookkk

Step-by-step explanation:

oofookkjjjnnn

ooo6

3 0
3 years ago
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