MATHEMATICS MIDDLE SCHOOL

Plz i need help asap

Answers

Answer 1

Answer:

1. x = 4

2. x = 3

3. x = 2 and x = -3

Step-by-step explanation:

solution 1

$√(3x+4)$ = 4

or, 3x+4 = 16 ( by squaring both sides)

or, 3x = 16 - 4

or, 3x = 12

or, x = 12/3

solution 2

(x+5)^(2/3) = 4

or, (x+5) = 4^(3/2) ( by the rule of index)

or, x+5 = 2^3

or, x + 5 = 8

or, x = 8 - 5 = 3

solution 3

$√(x+7)$ - x = 1

or, $√(x+7)$ = x+1

or, x + 7 = (x+1)^2 (squaring both sides)

or, x + 7 = $x^(2)$ + 2x +1

or, $x^(2)$ + x - 6 = 0

or, $x^(2)$ + 3x - 2x - 6 = 0 ( by middle term factor method)

or, (x+3) (x -2) = 0

or, x= -3 and x = 2

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What is the value of y so that the ordered pair (2, y) is a solution to the equation 2x+y=-2?A.
–6

B.
–2

C.

D.
0

Answers

x=2
y=-2-2x=-2-4=-6
so you choose a

Two complementary angles measure (9x+27) and (x+50) degrees. what is the value of x?

Answers

Complementary angles mean that the sum is Equal to 90. So

(9x+27)+(x+50) = 90

10x + 77 = 90 (combine like terms)
10x = 13 (subtraction property of equality)
x=1.3 (division property of equality)

Monica has 3$ in her wallet .If this is 10% of her monthly allowance,what is her monthly allowance?Please help!!!!!!!

Answers

10% 3 10/3= 3.33333333333 so 3*3.333333333 33=10
---- --- so 100/3 = 33.3333333333
100 ?
$33.33

HELP ME ASAP!! 20 POINTS! PLEASE!!!!

Answers

1. -5 5/6

2. ?

3. -8.16 (i think)

4. 1.6

Add.Your answer should be an expanded polynomial in standard form.
(-t^4 – 5t^3– 10t^2) + (9t^3+ 3t^2– 1) =

Answers

According to given question, The simplified polynomial in standard form is: $-t^4 + 4t^3 - 7t^2 - 1$

To add the two polynomials and simplify, we'll combine like terms:

$(-t^4 - 5t^3 - 10t^2) + (9t^3 + 3t^2 - 1)$

In mathematics, a polynomial is an algebraic expression consisting of variables (also known as indeterminates) and coefficients, combined using addition, subtraction, and multiplication operations. The variables are raised to non-negative integer powers, and the coefficients are constants that multiply the variables. The term "polynomial" comes from the Latin words "poly" (meaning "many") and "nomial" (meaning "term").

Step 1: Combine the terms with $t^4 and t^3:$

$(-t^4) + (9t^3 - 5t^3) - 10t^2 + 3t^2 - 1$

Step 2: Combine the $t^3$ terms and the $t^2$ terms:

$(-t^4) + (4t^3) - 7t^2 - 1$

So the simplified polynomial in standard form is:

$-t^4 + 4t^3 - 7t^2 - 1$

To know more about polynomial here

brainly.com/question/1496352

#SPJ2

Answer:

$- {t}^(4) + 4 {t}^(3) - 7 {t}^(2) - 1$

Step-by-step explanation:

$( - {t}^(4) - 5 {t}^(3) - 10 {t}^(2) ) + (9 {t}^(3) + 3 {t}^(2) - 1) \n = - {t}^(4) - 5 {t}^(3) - 10 {t}^(2) + 9 {t}^(3) + 3 {t}^(2) - 1 \n = - {t}^(4) + 9 {t}^(3)- 5 {t}^(3) + 3 {t}^(2) - 10{t}^(2) - 1 \n = - {t}^(4) + 4 {t}^(3) - 7 {t}^(2) - 1$

PLEASE HELPPPP!!!!!! Events A and B are mutually exclusive. Events B and C are non-mutually exclusive. Which Venn diagram could represent this description? Image for option 1 Image for option 2 Image for option 3 Image for option 4

Answers

Answer:

The answer is the attached figure

Step-by-step explanation:

* Lets explain mutually exclusive and non-mutually exclusive

- The mutually exclusive means events cannot happen at the

same time

# P(A or B) = P(A) + P(B)

- The non-mutually exclusive means they have at least one

outcome in common

# P(A or B) = P(A) + P(B) - P(A and B)

* Lets solve the problem

∵ Events A and B are mutually exclusive

∵ Circle A represents the event A

∵ Circle B represents the event B

∴ There is no intersection between the two circles A and B

∵ Events B and C are non-mutually exclusive

∵ Circle C represents the event C

∴ There is an intersection between the two circles B and C

* The answer is the attached figure

Answer: D. image 4.

Just did assignment.

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