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3 years ago

The diffrence of twice a number and 3 is -21

Mathematics

1 answer:

Alika [10]3 years ago

8 0

Answer:

x = - 9

Step-by-step explanation:

Step 1:

2x - 3 = - 21 Equation

Step 2:

2x = - 18 Add 3 on both sides

Step 3:

- 18 ÷ 2 Divide

Answer:

x = - 9

Hope This Helps :)

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11. Simplify 3/ 2 - /2

Igoryamba

answer:

you can't simplify that

step-by-step explanation:

3/2- /2 isn't a proper equation, therefore it cannot be simplified

please let me know if the issue is that you forgot the numerator, and in the instance that this is the case please type in the comments the numerator and i'll gladly change my answer

have a nice day!

8 0

3 years ago

Compare the table and equation.

insens350 [35]

Answer:

The table and equation have the same slope

Step-by-step explanation:

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

Step 1

Find the slope of the table

we have

$A(4,12)\ B(5,15)$

Substitute the values

$m=\frac{15-12}{5-4}$

$m=\frac{3}{1}=3$

Step 2

Find the slope of the equation

we have

$y=3x$ ------> the equation represent a linear direct variation

The slope is equal to $m=3$

therefore

The table and equation have the same slope

7 0

3 years ago

Read 2 more answers

How many bottles are needed to hold 3.5 liters of juice?

Kisachek [45]

7 bottles i believe, not rlly sure

7 0

2 years ago

A statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 49.049.0 and

sveta [45]

Answer:

10% probability that a given class period runs between 51.25 and 51.75 minutes.

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability of finding a value X between c and d, d greater than c, is given by the following formula:

$P(c \leq X \leq d) = \frac{d-c}{b-a}$

Uniformly distributed between 49 and 54 minutes

This means that $b = 54, a = 49$

Find the probability that a given class period runs between 51.25 and 51.75 minutes.

$P(51.25 \leq X \leq 51.75) = \frac{51.75 - 51.25}{54 - 49} = 0.1$

10% probability that a given class period runs between 51.25 and 51.75 minutes.

6 0

3 years ago

Round 503.782 to the nearest tenth.

ozzi

Answer:

503.8

Step-by-step explanation:

Since in the hundredth place you have a number higher than 5, we want to round the tenth digit up by one to get 503.8.

5 0

3 years ago