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4 years ago

Describe the parts of this algebraic expression using the lessons vocabulary

2 answers:

8 0

The algebraic expression has one constant, 10.2, which is a number by itself. The variables, which are letters that stand for unknown values, are x and y. The coefficients, which are numbers that are multiplied to the variables, are
-1, -1/2, and 1. The terms that have an x are like terms.

pogonyaev4 years ago

6 0

The coefficient is the number in front of a variable, so in this case it would be -1/2. The constant is the number not attached to a variable so that would be 10.2. The like terms are -1/2x and -x because the both contain an x that have the same power. The variable here is y. I'm not sure about the difference between numerical expression and algebraic expressions though, sorry! Hope this helps

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HELP QUICK! worth extra points

Vikentia [17]

Answer: 3w+4b

Step-by-step explanation:

Take your given equation

w+w+w+b+b+b+b

There are 3 w's and 4 b's

Combine like terms

w+w+w=3w

b+b+b+b=4b

3w+4b

3 0

3 years ago

Read 2 more answers

Add the complex numbers. (-2-4i)+(-12+7i) = ??

lions [1.4K]

Question:

(-2 - 4i) + (-12 + 7i)

= -14 + 3i

6 0

3 years ago

Read 2 more answers

A ball thrown straight up in the air travels 90 inches in the first tenth of a second. In the next tenth of a second the ball tr

Tcecarenko [31]

Answer:

855

Step-by-step explanation:

1.9 seconds is 19 tenths, so that means we add using the information given, which is that the ball travels 5 fewer inches every tenth of a second:

Time | Inches traveled

0.1 | 90

0.2 | 85

0.3 | 80

0.4 | 75

0.5 | 70

0.6 | 65

0.7 | 60

0.8 | 55

0.9 | 50

1.0 | 45

1.1 | 40

1.2 | 35

1.3 | 30

1.4 | 25

1.5 | 20

1.6 | 15

1.7 | 10

1.8 | 5

1.9 | 0

90+85+80+75+70+65+60+55+50+45+40+35+30+25+20+15+10+5+0=855

6 0

3 years ago

Solve the following problem, round your answer to the nearest 2 decimal places if needed.

blondinia [14]

Applying the midsegment theorem, the value of x = 5

Recall:

The midsegment theorem of a triangle states that the length of the mid-segment (DE) which is parallel to the third side (AC), is half the length of the third side AC of triangle BAC.

Thus:

DE = 1/2(AC)

Substitute

2x - 3 = 1/2(x + 9)

Multiply both sides by 2

2(2x - 3) = x + 9

4x - 6 = x + 9

Combine like terms

4x - x = 6 + 9

3x = 15

Divide both sides by 3

x = 5

Therefore, applying the midsegment theorem, the value of x = 5

Learn more about the midsegment theorem on:

brainly.com/question/7423948

5 0

3 years ago

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

seropon [69]

Answer:

$y = -\frac{1}{2}(x^2-2x-8)$

Simplified it is $y=-\frac{1}{2}x^2+x+4$

Step-by-step explanation:

The x-intercepts of a parabola form the factors of the equation. Since the x -intercepts are (-2,0) and (4,0) then the factors are (x+2) and (x-4). Factors are pieces which multiply to make the equation.

$y=(x+2)(x-4)\\y=x^2+2x-4x-8\\y=x^2-2x-8$

This is the standard form of the parabola $ax^2+bx+c$ . Since the y-intercept of the parabola is (0,4) then a number must also be multiplied to it

$y=a(x^2-2x-8)$

We find a by plugging in x=0 and y=4.

$4=a(0^2-2(0)-8)\\4=a(0-0-8)\\4=a(-8)\\\frac{4}{-8} = a\\\frac{-1}{2} = a$

So the equation is $y = -\frac{1}{2}(x^2-2x-8)$ .

When simplified it is $y=-\frac{1}{2}x^2+x+4$

3 0

4 years ago