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3 years ago

Use properties of addition and subtraction to evaluate the expression. −28−47−12

Mathematics

1 answer:

Brrunno [24]3 years ago

6 0

The answer would be -87

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PLEASE HELP FOR BRAINLIEST

Schach [20]

Answer:

b=74 degrees c=1O6 degrees

Step-by-step explanation:

B is 74 because its across from the 74 degrees

C is 1O6 degrees because 18Odegrees-74degrees-1O6degress

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2 years ago

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What is 5 2/7 rounded to the nearest whole number

Karolina [17]

5 and 2/7 would be closer to the whole number 5 than 6

Your answer would be 5

Glad to assist!

4 0

3 years ago

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With full explanation from the internet like before 3x2-6x+5=0

Elodia [21]

Answer:

$\sf x=1+i\sqrt{\dfrac{2}{3}} \ \quad and \quad \:x=1-i\sqrt{\dfrac{2}{3}}$

Explanation:

Given Expression:

3x² - 6x + 5 = 0

Use the Quadratic Formula:

$\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a} \ \ when \ \ ax^2 + bx + c = 0$

insert coefficients

$\Longrightarrow \sf x = \dfrac{-\left(-6\right)\pm \sqrt{\left(-6\right)^2-4\cdot \:3\cdot \:5}}{2\cdot \:3}$

$\Longrightarrow \sf x = \dfrac{\left6\right\pm \sqrt{-24} }{6}$

$\Longrightarrow \sf x = \dfrac{\left6\right\pm 2\sqrt{6}i}{6}$

$\Longrightarrow \sf x =1 \pm i\dfrac{\sqrt{6} }{3}$

$\Longrightarrow \sf x=1+i\sqrt{\dfrac{2}{3}}, \quad 1-i\sqrt{\dfrac{2}{3}}$

6 0

2 years ago

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Josef's closet is 5 feet wide and 3 feet deep. What is the area of his closet floor?

choli [55]

Answer:

15f^2

Step-by-step explanation:

multiply lenghtxwidth

always make sure to square your answer when doing area

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3 years ago

Determine whether the relation is a function or not. (-2-8). (-1.-4), (1,4),(2,8), (3, 12) function not a function

sveticcg [70]

Answer:

ill explain

Step-by-step explanation:

find the difference between the y and x values

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3 years ago