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Stolb23 [73]
2 years ago
11

Easy 20 PTS PTS PTS PTS

Mathematics
1 answer:
Serhud [2]2 years ago
7 0

Answer:

Step-by-step explanation:

The trouble maker is √(x - 3).

If you try and put in (say) - 1 for x, what happens is that you are taking the square root of -1 - 3 = - 4. At this level of math, you can't take the square root of a number < 3. So that modified is what you put in the blank.

The domain for f(x) is all the real numbers larger than or equal to 3.

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The length of a rectangle is 5 inches more than the width. The area is 33 square inches. Find the length and width . Round to th
EleoNora [17]

Answer:

the length and width . Round to the nearest tenth are 8.8 inches and 3.8 inches respectively.

Step-by-step explanation:

The area A of a rectangle is the product of the length L and width W. This may be expressed mathematically as

A = L * W

As such, given that the length is 5 inches more than the width,

L = W + 5

33 = W(W + 5)

W² + 5W  - 33 = 0

Using the formula method which states that

s = -b±√(b²-4ac)/2a

W = -5 ± √5² - 4(1)(-33)/2

= -5 ± 12.53/2

= 7.53/2 (since length cannot be negative)

= 3.755 inches

L = 3.755 + 5

= 8.755 inches

6 0
3 years ago
What is -7 2/3+(-5 1/2) +8 3/4?
shepuryov [24]

Answer:

-4 5/12

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
SS
Tanzania [10]

Answer:

c = 160 - 3(45)

Step-by-step explanation:

if c = the number of characters left;

160 = maximum number of characters that can be used in a text

3*45 = number of characters in sentences already used. (There are 3 sentences of 45 characters.)

(# of char left) = (max # char) - (# char already used) so:

c = 160 - 3*(45)

c = 160 - 135

c = 25

8 0
3 years ago
if a box contains 7 red marbels, 6 white and 8 blue marbels and a marble is randomly selected from the box what is the probabili
elixir [45]

Answer:

1/3

Step-by-step explanation:

7 + 6 + 8 = 21 (There is a total of 21 marbles)

There are 7 red marbles, so the fraction should be 7/21 or 1/3

Have a great day :)

6 0
3 years ago
Read 2 more answers
What is the measure of angle x? need help asap <br>​
Blizzard [7]

Answer:

83! :)

Step-by-step explanation:

It all equals 180.

So,

53+44+?=180

180-53-44=83! :)

83+53+44=180! :)

7 0
3 years ago
Read 2 more answers
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