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GarryVolchara [31]
3 years ago
5

Your friend evaluates the power (-3)^2 is your friend correct ? explain

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
5 0

The evaluation of the expression  (-3)² is incorrect the correct answer will be  (-3)²=+9.

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

Expression in maths is defined as the collection of the numbers variables and functions by using the signs like addition,substraction, multiplication and division.

Here we have an expression in the question:-

=  (-3)²  = (-3  x   -3  )  =  9

So the answer of the question will be 9 because the multiplication of the two negative sign is always positive.

To know more about expression follow

brainly.com/question/723406

#SPJ1

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What is the solution for -3(6x+5)-2(1-17x)=3(5+5x)
Novosadov [1.4K]

-3(6x+5)-2(1-17x)=3(5+5x)

Mutiply the first bracket by -3

(-3)(6x)= -18x

(-3)(5)= -15

Mutiply the second bracket by -2

(-2)(1)= -2

(-2)(-17x)= 34x

Mutiply the third bracket by 3

(3)(5)= 15

(3)(5x)= 15x

-18x-15-2+34x= 15+15x

-18x+34x-15-2= 15+15x

16x-17= 15+15x

move 15 to the other side

sign changes from +15 to -15

16x-17-15= 15-15+15x

16x-32= 15x

move -32 to the other side

sign changes from -32 to +32

16x-32+32=15x+32

16x= 15x+32

move 15x to the other side

sign changes from +15x to -15x

16x-15x=15x-15x+32

x= 32

Answer: x= 32

3 0
3 years ago
Please help me (9-7×3+4)^2
kherson [118]
(9 - 7 × 3 + 4)²
(9 - 21 + 4)²
(9 - 17)²
(-12)²
144
5 0
4 years ago
Which expression is equivalent to 50 – 40 - 2?​
Virty [35]

Answer: = 8

Step-by-step explanation: Hope this help :D

3 0
3 years ago
Re-write the quadratic function below in Standard Form<br> y=-3 (x - 2)² – 7
pav-90 [236]

Answer:

y=-3x^2+12x-19

Step-by-step explanation:

we know that

The quadratic equation in standard form is equal to

y=ax^{2} +bx+c

we have

y=-3(x-2)^{2}-7

This is a quadratic equation in vertex form

Convert to standard form

y=-3(x^2-4x+4)-7

Apply distributive property

y=-3x^2+12x-12-7

Combine like terms

y=-3x^2+12x-19 ----> quadratic equation in standard form

3 0
3 years ago
brigham bought a soda for $1.25 nancy bought a soda for $1.99 how much more did nancy pay for her soda
Pie
Nancy's soda was 74 cents ($0.74) mo0re than Brigham's soda.

8 0
4 years ago
Read 2 more answers
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