All Answers 358150 Answers

9+9 = 18

9+10 = 21

9+10-1 = 18

20 degrees east of north, should be 70 degrees from east.

2.5 hours
@200 mph= 500

sin70=x/500 northerly distance

cos70=x/500 easterly

x= number of pens

2x= number of pencils

2x+x=39

3x=39

x=13

2x=26

Since the left side of the equation adds to 100, in order to equal 360 you must multiply by 3.6

There is some controversy raging over this one.

I believe that the answer is one, following the order of operations.

20 ÷ 2(5+5)

20/(2*10),  combining 5+5 first, that would give you 10 (still in parenthesis). Since the parenthesis must be operated on first, the 2 must be multiplied next to give 20/20.

Nothing yet. You have to set the expression equal to something, like zero.

If 1/4x+3/4 =0

then

1/4x=-3/4

and

x=-3

The right answer is 19 but the stupid answer is 21.

Find the decimal eqivalent then put that in then change it back.

I'm good. Do you have an account on here? I sorry I caused so much trouble on here! 

$$\underset{\,\,\,\,^{\textcolor[rgb]{0.66,0.66,0.66}{360^\circ}}}{{sin}}^{\!\!\mathtt{-1}}{\left({\frac{{\mathtt{1}}}{{\mathtt{7}}}}\right)} = {\mathtt{8.213\: \!210\: \!701\: \!738^{\circ}}}$$

$$16\frac{61}{100}$$

$${\sqrt{{\mathtt{33.33}}}} = {\mathtt{5.773\: \!214\: \!009\: \!544\: \!423\: \!6}}$$

Since you are given the circumference, use the formula for a circle's circumference, C=2pi(r) to determine the radius.

C, in this case is given as 20 pi. Once r is determine used the formula for the area of a circle,

Area= pi* r²

$${\left({\mathtt{256}}{\mathtt{\,-\,}}{\mathtt{464}}{\mathtt{\,\small\textbf+\,}}{\mathtt{75}}\right)}^{{\mathtt{8}}} = {\mathtt{97\,906\,861\,202\,319\,841}}$$

17x-4x+7>3x-(17-6x)

13x+7>3x-17+6x

13x+7>9x-17

4x>-24

x>-6

x-8-2(x-2)>0

x-8-2x+4>0

-x-4>0

-4>x

Be careful to follow the order of operations and operate on the parenthesis first.

A graph will confirm that when x is less than -4, y is positive (i.e. greater than zero).

This is simple addition:$${\mathtt{20.94}}{\mathtt{\,\small\textbf+\,}}{\mathtt{16.48}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1.799}} = {\mathtt{39.219}}$$

Usually the variable "t" is used for time. So t² would be the amount of time squared, or multipled by itself.

$${\sqrt{{\mathtt{0.663}}}} = {\mathtt{0.814\: \!248\: \!119\: \!432\: \!891\: \!3}}$$

We have

2^10000  = x       take the log of both sides

log 2^10000 = log x     and by a log property

10000log 2 = log x  

3010.299956639812 = log x

In exponential form we have

10^{3010.299956639812}  = x

This = 10³⁰¹⁰ *10^{.299956639812 =}  

Approximately..... 1.995 x 10³⁰¹⁰  or approximately....... 1995 followed by 3007 zeros

You can combine like terms.

0.05x + 1.02x =x(0.05+1.02)=1.07x

x^2+y^2=4

x+y=2

This is the intersecction of a line  and a circle

Using the second equation we can write y = 2 -  x

And substituting this into the first equation for y, we have

x^2 + (2 - x)^2 = 4   simplify

x^2 + x^2 - 4x + 4 = 4   subtract 4 from both sides  and simplify

2x^2 - 4x = 0  factor

2x(x - 2) = 0       setting each factor to 0, we have that x = 0, and x = 2

And using x + y = 2

When x = 0, y = 2

When x = 2, y =0  so the answers are (0,2) (2,0)

Seventy two years.

This is given by

a(1- r^n)/ (1 - r)    where a is the first term, r is the common ratio  and n is the number of terms (years)....so we have....

17000(1 - 1.04^5) /(1 - 1.04) = $92,077.48

The answer is 9