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3 years ago

PLS HELP FAST IM BEING TIMED!!!

Mathematics

2 answers:

Lina20 [59]3 years ago

6 0

Answer:

Step-by-step explanation:

hope it helps

zhenek [66]3 years ago

3 0

Answer:

The answer is C

Step-by-step explanation:

I keep seeing people put c so i am pretty sure that right

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List the ages of your family and find the average age 55,34,26,24,19,17

Dmitriy789 [7]

Answer:

Soln: 

 

 Total ages = 175

 No. of ages= 6 

 Now,

Average age= Total ages/no. of ages

 

 = 175/6 

 = 29.167 ans.

4 0

2 years ago

What is a negative plus a positive

Pani-rosa [81]

Answer:

When you are adding a negative number to a positive number you are effectively subtracting the second number from the first. ... And then you add the negative number, which means you are moving to the left – in the negative direction. Basically you are subtracting the 2. The answer is 2.

Step-by-step explanation:

5 0

3 years ago

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Find the distance from the origin to the graph of 7x+9y+11=0

Cerrena [4.2K]

One way to do it is with calculus. The distance between any point $(x,y)=\left(x,-\dfrac{7x+11}9\right)$ on the line to the origin is given by

$d(x)=\sqrt{x^2+\left(-\dfrac{7x+11}9\right)^2}=\dfrac{\sqrt{130x^2+154x+121}}9$

Now, both $d(x)$ and $d(x)^2$ attain their respective extrema at the same critical points, so we can work with the latter and apply the derivative test to that.

$d(x)^2=\dfrac{130x^2+154x+121}{81}\implies\dfrac{\mathrm dd(x)^2}{\mathrm dx}=\dfrac{260}{81}x+\dfrac{154}{81}$

Solving for $(d(x)^2)'=0$ , you find a critical point of $x=-\dfrac{77}{130}$ .

Next, check the concavity of the squared distance to verify that a minimum occurs at this value. If the second derivative is positive, then the critical point is the site of a minimum.

You have

$\dfrac{\mathrm d^2d(x)^2}{\mathrm dx^2}=\dfrac{260}{81}>0$

so indeed, a minimum occurs at $x=-\dfrac{77}{130}$ .

The minimum distance is then

$d\left(-\dfrac{77}{130}\right)=\dfrac{11}{\sqrt{130}}$

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3 years ago

Round 922 to the nearest hundred

artcher [175]

900 because just like rounding tens if you have 14 to 11 itll round to 10 if it is from 15-19 youll round to 20. so since 922 isnt 950-999 youll round it to 900

4 0

2 years ago

Which of the following is equal to the absolute value of 7 A.-3and-4 on a number line. B.7and0 on a number line. C.1and7 on a nu

lozanna [386]

Absolute Value can’t be negative so -3 minus -4 is -7 but since absolute value isn’t able to be negative it turns into 7, the answer is A

5 0

2 years ago

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