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3 years ago

11

Is this statement true or false? The Symmetric Property of Equality lets you exchange the expressions on each side of the equals

sign.

1 answer:

Ludmilka [50]3 years ago

8 0

This statement is true

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What is the domain of the function y = log(x + 3)?

Umnica [9.8K]

Answer:

the domain for the function y=log(x+3) is (-3,oo).

6 0

3 years ago

Diana had a large stack of playing cards. She knew that 17 of them were kings. She took a sample of 30 cards and found 4 kings.

Mandarinka [93]

Answer:

Diana approximately had 128 cards

Step-by-step explanation:

Let n be the number of cards Diana had. She knows that

there are 17 kings among n cards
4 kings among 30 cards

Write a proportion:

$\dfrac{17}{n}=\dfrac{4}{30}$

Cross multiply:

$4n=17\cdot 30\\ \\4n=510\\ \\n=\dfrac{510}{4}=127.5\approx 128$

5 0

3 years ago

Solve the equation 6w2 – 7w – 20 = 0.

azamat

For this case we have the following quadratic equation:

$6w ^ 2-7w-20 = 0$

Where:

$a = 6\\b = -7\\c = -20$

Its roots will be given by:

$w = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}\\w = \frac {- (- 7) \pm \sqrt {(- 7) ^ 2-4 (6) (- 20)}} {2 (6)}\\w = \frac {7 \pm \sqrt {49 + 480}} {12}\\w = \frac {7 \pm \sqrt {529}} {12}\\w = \frac {7 \pm23} {12}$

The roots are:

$w_ {1} = \frac {7 + 23} {12} = \frac {30} {12} = \frac {15} {6} = \frac {5} {2}\\w_ {2} = \frac {7-23} {12} = \frac {-16} {12} = - \frac {8} {6} = - \frac {4} {3}$

Answer:

$w_ {1} = \frac {5} {2}\\w_ {2} = - \frac {4} {3}$

7 0

3 years ago

Read 2 more answers

Correct answer will get brainliest

anygoal [31]

Answer:80

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

How is it 17.66<br> Right answer gets brainlest

pickupchik [31]

23^2+B^2=29^3
529+B^2=841
B^2 =312
17.66

7 0

3 years ago