All categories

3 years ago

20 POINTS!!! NEED ALL 4 ANSWERED!!!

Mathematics

1 answer:

TEA [102]3 years ago

3 0

Answer:

1. x = 10 2. x = 7 3. x = 1 4. x = 6

Explanation:

1. -2x + 81 = 61 (Subtract 81 from 61)

-2x = -20 (Divide)

x = 10

2. 9x - 58 = 5 (Add 58 to 5)

9x = 63 (Divide)

x = 7

3. 21 +10x = 3x + 28 (Rearrange expression)

21 - 28 = 3x - 10x (Combine like terms)

-7 = -7x (Divide)

x = 1

4. 9x - 42 = 2x (Rearrange)

9x - 2x = 42 (Combine like terms)

7x = 42 (Divide)

x = 6

You might be interested in

What price does the price tag say in the window?

Vladimir [108]

24 x 0.25
6
24+6
30
so the answer is £30

7 0

3 years ago

In an auditorium, a charity show is conducted in order to raise at least $3,750. The auditorium can accommodate up to 180 specta

Maksim231197 [3]

Answer:

See explanation

Step-by-step explanation:

Let $x,\ x\ge 0$ be the number of students and $y,\ y\ge 0$ be the number of adults on the show.

1. Tickets cost $15 for students, so x student tickets cost $15x.

Tickets cost $25 for adults, so y adult tickets cost $25y.

Total cost of all tickets is $(15x + 25y).

The charity show is conducted in order to raise at least $3,750, thus

$15x+25y\ge 3,750$

2. The auditorium can accommodate up to 180 spectators, hence

$x+y\le 180$

3. We get the system of inequalities:

$\left\{\begin{array}{l}x\ge 0\\y\ge 0\\x+y\le 180\\15x+25y\ge 3,750\end{array}\right.$

Plot all solutions sets to each inequality and the common region is the solution set to the system of inequalities. This region is not empty, so the charity will reach its goal. For example, if they sell 50 students tickets and 125 adult tickets, they will raise $\$(15\cdot 50+25\cdot 125)=\$3,875$

8 0

2 years ago

How much ounces are in 22 grams 0.035x

Daniel [21]

Answer:

0.77 ounces

My apologies if my answer is wrong :)

8 0

2 years ago

Read 2 more answers

Evaluate the expression,<br> if x = 9, y = 14, and z = 6.<br> x• y - z^2

alex41 [277]

The answer is 90. Hope this helps

7 0

1 year ago

Read 2 more answers

Pleaseeee help!!!!! I will mark you as brainlinest for correct answer!!!!!!

Setler79 [48]

So the equation you'll use is (18,000 × .041)y+18000. Y is your years which is 20. So all you need to do is plug it in to get (18,000 × .041)20+18000 and when solved is 32,760 downloads by 2030

4 0

3 years ago