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marin [14]
3 years ago
8

9 pts. How do you solve:x + 25 + 2x +41 = 296

Mathematics
1 answer:
marysya [2.9K]3 years ago
6 0
First you would combine the like terms. Combine x + 2x which will lead you to 3x and then add 25 +41 which will equal 66. Then you would subtract 66 from both sides. 3x+66=296 .......3x-66=296. 296-66= 230 and then you’ll divide 230 by 3 which will give you 76.66666
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-0.4x-3.1=5.9 enter your answer as a decimal or as a mixed number in simplest form in the box
Katyanochek1 [597]

Answer:

x = -22.5

Step-by-step explanation:

-0.4x - 3.1 = 5.9

+3.1 +3.1

-0.4x = 9

/-0.4 /-0.4

x = -22.5

6 0
3 years ago
Ella have stack of 50 pennies of ten
Veseljchak [2.6K]
Ella has 5 dollars in total

each stack has 50 cents and there's 10 stacks
.50*10 will equal 5.00 which is 5 dollars
6 0
3 years ago
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What does Sin mean in geometry
Darya [45]

Answer:

in mathematics, the sine is a trigonometric function of an angle.

Step-by-step explanation:

The sine of an acute angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse).

Fixed point: 0

Critical point: kπ + π/2

Inflection point: kπ                                                                                                             hope this helps you :)

4 0
4 years ago
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Solve the quadratic equation by taking the square root of (x+5)^2=16
Liula [17]
Hi okay i’m gonna write the explanation i hope you give me a brilliant if you think I’m deserving it thank you

(x-5)2=16


The first step you can take to solve this quadratic is to take the square root of both sides of the equation.

√[(x-5)2]=√(16)

When you take the square root of a term that is square it equals what is inside the parentheses.

So on the left side, you have x-5

On the right side, you are what we call "forcing" the square root. When this happens, you need to put ±. Why? Good question. When you square a negative number it positive; when you square a positive number it is also positive.

The √16 = ±4

So now we have;
x-5=±4

What do you do with that?
You make two separate equations.

x-5=4 and x-5=-4
x=9 x=1


Let's check our answers

x=9

(x-5)2=16
(9-5)2=16
42=16
16=16 it checks

x=1

(x-5)2=16
(1-5)2=16
(-4)2=16
16=16 it also checks


ANSWER: x=9 and x=1
5 0
2 years ago
Read 2 more answers
15. Solve for the specified variable:<br> -<br> х<br> +<br> 7 8<br> - 10; for y.
Andreyy89

Answer:

y=80-\frac{8x}{7}

Step-by-step explanation:

15). Given equation is,

     \frac{x}{7}+ \frac{y}{8}=10

     Multiply the equation by 8,

     8(\frac{x}{7}+ \frac{y}{8})=10\times 8

     \frac{8x}{7}+y=80

     Subtract \frac{8x}{7} from both the sides of the equation,

     \frac{8x}{7}+y-\frac{8x}{7}=80-\frac{8x}{7}

     y=80-\frac{8x}{7}

     Therefore, value of the variable 'y' will be,

     y=80-\frac{8x}{7}

3 0
3 years ago
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