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3 years ago

14

To find the value of an expression is called

1 answer:

Ad libitum [116K]3 years ago

4 0

We have learned that, in in an algebraic expression<span>, letters can stand for numbers. When we substitute a specific </span>value<span> for each variable, and then perform the operations, it's </span>called<span> evaluating the </span>expression<span>. Let's evaluate the </span>expression<span> 3y + 2y when 5 = y.</span>

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How do you answer (-3)² ?

nadya68 [22]

The two at the top technically means how many times the number in the bracket times ITSELF by, so its technically -3 x -3 which is +9 , cause a negative x negative = positive

7 0

3 years ago

Read 2 more answers

Evaluate 9(x + 5y) for x = 2 and y = 5.

Orlov [11]

Answer:

243

Step-by-step explanation:

STEP 1: Evaluate the variables

9(2 + (5)(5))

STEP 2: Then from there you can multiply the equation

18 + 225 = 243

6 0

3 years ago

Select the polynomial that can be factored as (4x-5)(16x^2+20x+25)

bezimeni [28]

f(x) = 64x³ - 125

Multiply each term in the second factor by each term in the first factor

= 4x(16x² + 20x + 25) - 5(16x² + 20 x + 25)

=64x³ + 80x² + 100x - 80x² - 100x - 125

= 64x³ - 125 ← difference of cubes

5 0

3 years ago

The length between (3, 8) and (-2, -4) is ______?

True [87]

Answer:

13

Step-by-step explanation:

to find the length between two point you've got to use the formula

√(x2-x1)^2 +(y2-y1)^2

√(-2-3)^2 + (-4-8)^2

√(-5)^2 + (-12)^2

√ 25+144

√169

13

5 0

3 years ago

Which of the following is the sum of both solutions of the equation <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2Bx-42%3D0"

AysviL [449]

Answer: $x=6$ or $x=-7$

Step-by-step explanation:

Step 1: Factor left side of equation: $(x-6)(x+7)=0$

Step 2: Set factors equal to 0: $x-6=0$ or $x+7=0$

Get your answer: $x=6$ or $x=-7$

5 0

3 years ago