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4 years ago

15

Tìm cực trị của các hàm số

qrt{x} +\sqrt{9-x\alph" alt="\sqrt{x} +\sqrt{9-x\alph" align="absmiddle" class="latex-formula">

1 answer:

frozen [14]4 years ago

6 0

800.89 yup lol bum n n n n

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What is the answer to this question ?

BlackZzzverrR [31]

Answer: 40

Step-by-step explanation:

5*2^3 = ? // means comment btw, also I am on my iPad so * means times and ^ power like 2 to the 3rd power

5*2*2*2

(5*2)*(2*2)

10*4

Answer= 40

7 0

3 years ago

How do i solve this question, anyone help

Degger [83]

Answer:

a. $\sqrt{52}$ cm or 7.21cm

b. $\sqrt{170}$ cm or 13.04cm

c. x= $\sqrt{136}$ cm or 11.66cm, y= $\sqrt{191}$ cm or 13.82cm

Step-by-step explanation:

a. You have to find the length of the other two sides of the triangle using the information already given. The first side is 6cm and the other is 12-9=4cm. Because it's a right-angled triangle you can use pythagoras

$c^2=a^2+b^2\\x^2=6^2+4^2\\x^2=36+16\\x^2=52\\x=\sqrt{52}cm \\x=7.21cm$

b. You can use pythagoras again because it's a right-angle triangle

$x^{2} =7^2+11^2\\x^2=170\\x=\sqrt{170} cm\\ = 13.04cm$

c. In this question you have to find x and y. We need to find x first using pythagoras

$x^2=6^2+10^2\\x^2=136\\x=\sqrt{136}cm \\=11.66cm$

Now that we've found x we can find y using pythagoras but instead of find c, we will find another side

$c^2=a^2+b^2\\19^2=\sqrt{170} ^2 + b^2\\361=170+b^2\\361-170=170+b^2-170\\191=b^2\\b=\sqrt{191}cm \\=13.82cm$

Hope this helps :)

8 0

2 years ago

Will give brain less

irina1246 [14]

Answer:

(0, 0)

Step-by-step explanation:

The y-intercept refers to the point where the graph of a function intersects or crosses the y-axis. The value of x is usually zero at this particular point since the y-axis has the equation;

x = 0

From the alternatives given, the ordered pair (0, 0) could be the y-intercept of a function since x has a value of 0.

3 0

3 years ago

Is the answer option c?

Masja [62]

Answer:

Discrete

Step-by-step explanation:

A set can simply be defined as a list of values. There are many different types of sets, some are intervals, others are enumerated numbers. Often, a set composed of values that are listed is referred to as a discrete set. Discrete sets can be a list of information, or "isolated points". Knowing this information, the most logical answer to fill in the blank is "discrete".

"If a set is made up of isolated points and can be written as a list, it is called a <u>discrete</u> set."

7 0

3 years ago

Maria works as a florist and worked 15 hours last week and earned $112.50. At that rate, how much will she earn if she works for

Montano1993 [528]

Answer:

Rearranging the options we have;

a. $73

b. $75

c. $55

d. $78

From which the correct option is;

b. $ 75.

Step-by-step explanation:

To solve the question, we note that

Number of hours worked last week by Maria = 15 Hours

Amount earned by Maria for work last week = $ 112.50

Therefore by finding the hourly rate, that is how much Maria is being paid per hour, we get

15 Hours = $ 112.50

Therefore dividing both sides of the equation by 15 we get

15 Hours/15 = $ 112.50/15 which gives

1 Hour = $ 7.50

To find out how much will she earn if she works for 10 hours, we have

1 Hour = $ 7.50

Therefore multiplying both sides of the equation by 10 we have,

1 Hour × 10 = $ 7.50 × 10

10 hours = $ 75.00

That is she would earn $ 75.00 in 10 hours.

7 0

3 years ago