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pentagon [3]
3 years ago
15

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

Mathematics
2 answers:
olga2289 [7]3 years ago
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]3 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)

You might be interested in
Find the angle between the given vectors to the nearest tenth of a degree. u = , v = (2 points)
Liono4ka [1.6K]

Answer:

<h2>3.6°</h2>

Step-by-step explanation:

The question is incomplete. Here is the complete question.

Find the angle between the given vectors to the nearest tenth of a degree.

u = <8, 7>, v = <9, 7>

we will be using the formula below to calculate the angle between the two vectors;

u*v = |u||v| cos \theta

\theta is the angle between the two vectors.

u = 8i + 7j and v = 9i+7j

u*v = (8i + 7j )*(9i + 7j )

u*v = 8(9) + 7(7)

u*v = 72+49

u*v = 121

|u| = √8²+7²

|u| = √64+49

|u| = √113

|v| = √9²+7²

|v| = √81+49

|v| = √130

Substituting the values into the formula;

121= √113*√130 cos θ

cos θ = 121/121.20

cos θ = 0.998

θ = cos⁻¹0.998

θ = 3.6° (to nearest tenth)

Hence, the angle between the given vectors is 3.6°

5 0
3 years ago
Simplify 2(a+5)−3(5a−4)
Nutka1998 [239]

Answer:

-13a+22

Step-by-step explanation:

we have

2(a+5)-3(5a-4)

step 1

Apply the distributive property  both terms

2a+2(5)-3(5a)+3(4)

2a+10-15a+12

step 2

Combine like terms

(2a-15a)+(10+12)

(-13a)+(22)

-13a+22

4 0
2 years ago
Which of the following systems of linear equations has an infinite number of solutions?
arlik [135]

Answer:

{ y = 3x + 3

{ 3x - y = 3

B

(Just did the assignment 3/23/21)

8 0
2 years ago
I’m lazy:) I’ll give brainliest
FinnZ [79.3K]

Answer:

its 5.795

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
F(x)=18x+11, find f(5)
Natalija [7]

Answer:

\boxed {\tt f(5)=101}

Step-by-step explanation:

We are given the function:

f(x)=18x+11

and asked to find f(5). Therefore, we must substitute 5 in for each x.

f(5)=18(5)+11

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Multiply 18 and 5.

f(5)=90+11

Add 90 and 11.

f(5)=101

f(5) is equal to 101.

5 0
3 years ago
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