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3 years ago

2/3x - 7 < 9 help please

Mathematics

1 answer:

Andrew [12]3 years ago

5 0

Answer:

x<24

*the answer will be incorrect if you meant 2/(3x) instead of (2/3)x

Step-by-step explanation:

First, add 7 to both sides of the inequality to get "2/3x<16." Then multiply both sides by 3 to get "2x<48." Finally, divide both sides by 2 to get "x<24"

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It’s need to be a full sentence:(

Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

For the first question: You need to multiply 20 by 0.05 to find the sales tax amount in dollars, which gives you $1. The sales tax is equal to $1.

For the second question: To find the total cost, add $1 to $20 to get $21 as the total cost for the shirt.

3 0

3 years ago

Im dumb could somebody help me pleaseeeeeee

Dvinal [7]

Answer:

1. (6-2)

2.40/4

3. 10-4

Step-by-step explanation:

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6 0

3 years ago

Read 2 more answers

Find the mean, range, and interquartile range of the heights of plants given

Artist 52 [7]

Answer:

Mean = 30.9

Range = 80

Interquartile Range = 36

Step-by-step explanation:

The mean of a set of numbers is the sum divided by the number of terms. In other words that means 2, 22, 4, 36, 82, 44, 65, 30, 8, 16 go over a fraction like this. There are 10 numbers here so this is our denominator.

$\frac{2+ 22 + 4 + 36 + 82 + 44 + 65 + 30 + 8 + 16}{10}$

$\frac{309}{10} > 30.9$

For the range, all we do is subtract the minimum value from the maximum which is 82 - 2. That gives us 80.

For the IQ Range....

Arrange the terms in ascending order.

2, 4, 8, 16, 22, 30, 36, 44, 65, 82

Then we need to find the median which is the average of the two middle terms.

$\frac{22+30}{2} > \frac{2*11 + 30}{2} >\frac{2*11+2*15}{2} > \frac{2 * (11 + 15)}{2} > 11 + 15 > 26$

So for the lower half of data 2, 4, 8, 16, 22 we have the median of 8

And for the upper half 30, 36, 44, 65, 82 we have the median of 44.

To find the IQ Range it is the difference between the first quartile (8) and the third (44)

So 44 - 8 = 36

7 0

2 years ago

Read 2 more answers

Please help:))))))

Veronika [31]

Answer:

1. 6x^2 + 4x - 4y

2. x - 10y.

3. 6x^5

4. 36 a^6 b^8

5. x^2 - 81

6. 9x^2 - 42x + 49

7. 12x^2 +3x - 42

Step-by-step explanation:

1. 3x^2+4x+3x^2-4y

Add the like terms, we get

6x^2 + 4x - 4y

2. (5x-2y)-(4x+8y)

Now distribute the negative sign, we get

5x - 2y -4x -8y

Simplify the like terms, we get

x - 10y.

3. 3x^3(2x)^2

Multiply the numbers and simplify the variables

6x^(3 +2)

6x^5

4. (-6a^3b^4)^2

Now bring the power 2 inside the parenthesis.

-6^2 a^6 b^8

= 36a^6b^8

5. (x+9) (x-9)

x^2 + 9x -9x - 81

x^2 - 81

6. (3x-7)^2

(3x - 7)(3x - 7)

9x^2 - 21x -21x + 49

9x^2 - 42x + 49

7. (3x+6) (4x-7)

12x^2 + 24x -21x - 42

12x^2 +3x - 42

Thank you.

8 0

3 years ago

You are saving money for your first car. You have $2000 in your account. You can deposit $100 every week. You want at least $500

lisabon 2012 [21]

Answer:

5000 ≤ 2,000 - 100x

Step-by-step explanation:

You already have 2,000 saved up. You can deposit 100 every week.

The equation would go:

5000 ≤ 2,000 - 100x

5 0

3 years ago