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2 years ago

4) (3x² + 5) + (3 – 7x²)What kind of math problem is this then simplify it

2 answers:

3 0

It’s order of operations it’s really easy
P- parentheses
E-exponents
M- multiply
D- divide
A- addition
S- subtraction
Do the problems in that order and u will get it answer

Step2247 [10]2 years ago

3 0

Answer: -4(x^2-2) or -4x^2+8

Step-by-step explanation:

Addition and Subtraction second degree Polynomials & Factorization and it also requires PEMDAS too.

Remove the brackets so it's easier to calculate

$3x^2+5+3-7x^2\\3x^2-7x^2+5+3$

Arrange degree (Not important) (If you are expert then no need to.)

$-4x^2+8$

Then factor,

$-4(x^2-2)$

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Which best explains why the equation y=2x+3 does or does not represent a proportional relationship?

pav-90 [236]

Answer:

It represents a non-proportional relationship

Step-by-step explanation:

because in order for it to be proportional it has to pass (0,0) but this equation's y-intercept is (0,3).

4 0

2 years ago

The gardening club at school is growing vegetables. The club has 300 square feet of planting beds. Cucumber plants require 6 squ

nadya68 [22]

The question doesn't ask anything in particular, I will show the set of inequalities defined in the problem.

Answer:

System of inequalities:

$6c+4t\leq 300$

$c>0\\t > 0\\c+t\geq 60$

Step-by-step explanation:

Inequalities

The express relations between expressions with a sign other than the equal sign. Common relationals are 'less than', 'greater than', 'not equal to', and many others.

The gardening club at school has 300 square feet of planting beds to plant cucumber and tomato. Each cucumber plant requires 6 square feet of growing space and each tomato plant requires 4 square feet of growing space. We know the total area cannot exceed 300 square feet, so

$6c+4t\leq 300$

Being c and t the number of cucumber and tomato plants respectively.

We also know the students want to plant some of each type of plant and have at least 60 plants. This lead us to more conditions

$c>0\\t > 0\\c+t\geq 60$

Note: The set of inequalities shown is not enough to uniquely solve the problem. We need something to maximize or minimize to optimize c and t

8 0

2 years ago

Write the equation of the line that passes through the points (0,8) and (-1, –4).

andrey2020 [161]

Answer:

Step-by-step explanation

First, let's remember the equation for point-slope form and how to find the 'm' value:

$y-y1 = m (x-x1)\\m = rise/run\\m = \frac{-4-(8)}{-1-(0)} = 12$

Now plug your m value and (x1, y1) into point-slope form:

$y - 8 = 12(x-0)\\reduce\\y=12x+8$

8 0

2 years ago

Round 81065 to the nearest ten thousand, hundred, ten, and thousand

brilliants [131]

Ten thousand-80000
hundred-81100
ten-81070
thousands-81000

6 0

2 years ago

Im going to give 15 points for this question please answer it

Gnom [1K]

I know, you have to divide 90 by what ever the length is, then you have to figure out where the points are. So it should be.... D!!!

8 0

3 years ago

4) (3x² + 5) + (3 – 7x²)What kind of math problem is this then simplify it​

4) (3x² + 5) + (3 – 7x²)What kind of math problem is this then simplify it