3 years ago

Please help revised version will give 13 points

1 answer:

3 0

If each math book is 0.75 of a inch wide you would do 18 divided by 0.75= 24. 24 books width can fit into the 18 inches.

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Tony buys CD that is priced at $13.59. Ha has a coupon for $1.85 off. He pays with a $20 bill. Which is the best whole number es

anygoal [31]

Tony will get $8.26 back.

Here's why:

First, let's take $1.85 away from $13.59, because he has a coupon. That leaves us with $11.74

Second, do $20 - $11.74 to get your answer, $8.26

4 0

3 years ago

Find the global maximum and global minimum values (if they exist) of x 2 + y 2 in the region x + y = 1. If there is no global ma

Grace [21]

Given that $x+y=1$ , we have $y=1-x$ , so that

$f(x,y)=x^2+y^2\iff g(x)=x^2+(1-x)^2$

Take the derivative and find the critical points of $g$ :

$g'(x)=2x-2(1-x)=4x-2=0\implies x=\dfrac12$

Take the second derivative and evaluate it at the critical point:

$g''(x)=4>0$

Since $g''$ is positive for all $x$ , the critical point is a minimum.

At the critical point, we get the minimum value $g\left(\frac12\right)=f\left(\frac12,\frac12\right)=\frac12$ .

5 0

3 years ago

Estimate the sum.<br> 68.4 + 50.2 = ?<br> Use rounding to estimate the sum.<br><br>

Alex73 [517]

Answer:

118.6 or 119

Step-by-step explanation:

you just add and round up

8 0

3 years ago

Read 2 more answers

If arc AB = 107° and arc BC = 122°, find the value of x.

Aneli [31]

Answer:

the value of x is acb 133°

4 0

2 years ago

a jar contains 30 red, 40 blue, and 59 white buttons. you pick one button at random, .find the probability that it is blue

Cerrena [4.2K]

Answer:

40/129

Step-by-step explanation:

30 Red + 40 Blue + 59 White = 129 marbles

40 blue / 129 marbles is about 31%

6 0

3 years ago

Please help ** revised version ** will give 13 points

Please help revised version will give 13 points