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2 years ago

14

Given the equation

2x+1}=3" align="absmiddle" class="latex-formula">, solve for x and identify if it is an extraneous solution.

1 answer:

r-ruslan [8.4K]2 years ago

4 0

3 I don’t actually Know the answer sorry

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A dolphin was swimming 28 meters below the oceans surface.it changed its depth to avoid a predator and ended up 21 meters below

Harman [31]

Answer:

+7

Step-by-step explanation:

if you go from 28 to 21 you see there is a difference of 7 and sense the number is a smaller number now we know the dolphin went up more towards the surface there for there is a change of positive 7

28-21=7

6 0

2 years ago

You need a mean of at least 90 points to advance to the next round of the touch-screen trivia. What score in the fifth game will

lianna [129]

Answer:

At least 98 is needed in the 5th game

Step-by-step explanation:

The missing parameters are:

$Game\ 1 = 95$

$Game\ 2 = 91$

$Game\ 3 = 77$

$Game\ 4 =89$

$Mean = 90$ at least

Required

The score in game 5 to make you advance

Mean is calculated as:

$Mean = \frac{\sum x}{n}$

So, we have:

$Mean = \frac{95 + 91 + 77 + 89 + Game\ 5}{5}$

$Mean = \frac{352 + Game\ 5}{5}$

The mean must be at least 90.

So, we have:

$\frac{352 + Game\ 5}{5} \ge 90$

Multiply both sides by 5

$5 * \frac{352 + Game\ 5}{5} \ge 90 * 5$

$352 + Game\ 5 \ge 450$

Make Game 5 the subject

$Game\ 5 \ge450 - 352$

$Game\ 5 \ge 98$

<em>At least 98 is needed in the 5th game</em>

4 0

2 years ago

A camel can drink 25 gallons of water in 10 minutes. How many cups of water can the camel drink in 10 minutes?

Alecsey [184]

Question:

A camel can drink 25 gallons of water in 10 minutes. How many cups of water can the camel drink in 10 minutes?

Solution:

A)

1 cup = 0.25 quarts.

4 quarts= 1 gallon

Then, according to this information, we get the following table:

B)

Note that 4 quarts= 1 gallon, then 1 gallon is equivalent to 16 cups.

C)

Then, 25 gallons are equivalent to:

$25\text{ gallons(}\frac{16\text{ cups}}{1\text{ gallon}}\text{)}=\text{ 400 cups}$

D. According to the above information, we obtain that 25 gallons of water are 400 cups .

So that, we can conclude that the correct answer is:

The camel can drink 400 cups of water in 10 minutes

8 0

8 months ago

What is a symbol that is used to represent a number

Vera_Pavlovna [14]

The symbol used to represent a number is called a variable.

6 0

2 years ago

Express it in slope-intercept form.

vekshin1

Answer:

y=(2/3)x+1

Step-by-step explanation:

Slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept.

To find the slope, we need two points. From the graph, we can see that (0,1) and (3,3) are valid points.

(0,1) is coincidentally also the y-intercept, so b=1.

The slope is (3-1)/(3-0)=2/3

The equation of the line is thus:

y=(2/3)x+1

5 0

2 years ago