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Andreyy89
3 years ago
15

If x = -3, calculate the value of: 2xsquared + x

Mathematics
2 answers:
Archy [21]3 years ago
6 0
2 x - 3² + - 3
2 x 9 + - 3
18 - 3
15
Debora [2.8K]3 years ago
4 0
Insert the value of x into the equation
2 (-3^2)+(-3)
2 (9)-3
18-3=15
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Subtract 2x^2-3xy+4y^2 from 3x^2-5xy-6y^2
Diano4ka-milaya [45]

Answer:

-x^{2} +2xy+10y^{2}

Step-by-step explanation:

2x^2-3xy+4y^2-(3x^2-5xy-6y^2)\\2x^2-3xy+4y^2-3x^2+5xy+6y^2\\-x^{2} +2xy+10y^{2}

8 0
3 years ago
Mary is baking cookies, and the recipe calls for 1 1/2 cups of sugar. If she has 6 1/3 cups of sugar left after she bakes the co
Inessa05 [86]

Answer:

7 5/6

Step-by-step explanation:

1 1/2= 1 3/6

6 1/3= 6 2/6

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7 5/6

4 0
2 years ago
1. (2 points) Solve each equation and write the answer on the line
BARSIC [14]
Eighteen tens < 21 × (5+5)

Hope this helps!
7 0
4 years ago
What is the slope of a line that goes through the points (10, -2) and (5,-5)? m =
Vinvika [58]

Answer:

m = 3/5

Step-by-step explanation:

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6 0
3 years ago
Write an absolute value inequality for the graph below GRAPH ADDED. Please reply with correct answer 1/3
Mama L [17]

The absolute value inequality for the graph is given as |x| < 4

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

The absolute value is given by:

|x - average| = distance to midpoint

From the graph:

x > -4 and x < 4

The midpoint is 0, hence Distance between -4 or 4 to midpoint (0) is 4

Average = (-4 + 4)/2 = 0

Hence:

|x - 0| = 4

|x| < 4

The absolute value inequality for the graph is given as |x| < 4

Find out more on equation at: brainly.com/question/2972832

#SPJ1

3 0
2 years ago
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