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Kay [80]
3 years ago
13

Evaluate the following expression when a = 5. 4a2 + a-3

Mathematics
1 answer:
crimeas [40]3 years ago
4 0
4(5)2+5-3
40+5-3
45-3
42
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Please answer asap
kondaur [170]

Step-by-step explanation:

A trinomial is an expression that has three terms.

Square trinomial

A square trinomial is simply a perfect square trinomial, and it is represented as:

\mathbf{a^2 + 2ab + b^2 = (a + b)^2}a2+2ab+b2=(a+b)2

Difference of square binomials

This is easily identified because, the terms of the square binomials are perfect squares.

The difference of square binomials is represented as:

\mathbf{a^2 - b^2 = (a + b)(a - b)}a2−b2=(a+b)(a−b)

Sums and difference of cubes

When cubes are added or subtracted, they can be expressed using the following

\mathbf{a^3 + b^3 = (a + b)(a^2 - ab + b^2)}a3+b3=(a+b)(a2−ab+b2) --- sum of cubes

\mathbf{a^3 - b^3 = (a - b)(a^2 + ab + b^2)}a3−b3=(a−b)(a2+ab+b2) --- difference of cubes

Read more about binomial and trinomial at:

brainly.com/question/12289266

6 0
3 years ago
Please help brainliest to correct answer
jekas [21]
The first one is -4 and the second one is 6.
7 0
3 years ago
Read 2 more answers
the equation 12 x + 5y=20 represents the total revenue during a one-day fundraiser in the equation x represents the number of Yo
alexandr1967 [171]
If you are solving for the question in the picture your answer would be 18. Whiich is letter A.
 
12x+15y=390         Original Equation
12(10)+15y=390      Replace x with 10
120 + 15y= 390       Mutiply 12 by 10
-120        = -120        subtract 120 on both sides to simplfy the equation
15y= 270                 New equation
÷15 = ÷15                 To get the variable alone divide 15 on both sides
y=18                         Your value for y.
3 0
4 years ago
Read 2 more answers
Pls help, and explain. I will give brainliest.
Semenov [28]

Ratio of apples to strawberries in Angie's salad

= 4:5

= 36:45 <em>(because we multiplied both numerator and denominator by 9, to get the same denominator as the other ratio)</em>

Ratio of apples to strawberries in Salim's salad

= 7:9

= 35:45 <em>(because we multiplied both numerator and denominator by </em><em>5</em><em>, to get the same denominator as the other ratio)</em>

36:45 ≠ 35:45

So, ratio of apples to strawberries in Angie's salad ≠ ratio of apples to strawberries in Salim's salad.

36:45 > 35:45

So, ratio of apples to strawberries in Angie's salad < ratio of apples to strawberries in Salim's salad.

5 0
3 years ago
Read 2 more answers
How do i solve? i don’t understand how you have to get the denominator
Len [333]
4⁻³ · 12⁰

Remember, if a power is ever negative, then you have to turn it into a fraction, and if a power is zero, then the whole number turns into 1 :)

4⁻³ turns into 1/4³ due to the fact that the power is negative.

So, our question now looks like this : 

1/4³ · 1

Simplify.

1/64 · 1

Simplify.

Our answer is : 1/64

~Hope I helped!~
5 0
3 years ago
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