MATHEMATICS HIGH SCHOOL

If (x + 3)2 = 42, what is the approximate positive value of x? 0.48
3.48
5.48
6.48

Answers

Answer 1
Answer: (x+3)^2 =42
x+3 = 6.48
x= 3.48
Answer 2
Answer: I just took this exam and the correct answer is 3.48. Good luck! 

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How do you divide 925 by42

Answers

925 divided by 42 is just seeing how many times 42 will go into 925 evenly. 
925 ÷ 42 = 925/42

What is the sum of the polynomials?(7x3 – 4x2) + (2x3 – 4x2)

a)5x3
b)9x3
c)5x3 – 8x2
d)9x3 – 8x2

Answers

If you have to find the sum of the polynomials (7x^3 - 4x^2) + (2x^3 - 4x^2)=7x^3-4x^2+2x^3-4x^2, then you have:

1. group all terms that have equal degrees

7x^3+2x^3 \text{ and } -4x^2-4x^2.

2. Add the coefficients near terms of equal degree

7+2=9,

-4-4=-8.

3. Write the sum as 9x^3-8x^2.

Answer: correct choice is D.
(7x3 – 4x2) + (2x3 – 4x2) = 9x3 – 8x2

Find the non-extraneous solutions of the square root of the quantity x plus 9 minus 5 equals quantity x plus 4.

Answers

( x+9) - 5= ( x+4 ) Try this it should help you ^^

To convert a fraction into a decimal number, divide the denominator by the numerator. a. True
b. False

Answers

Answer:

Option b. False

Step-by-step explanation:

we know that

A fraction is the quotient between the numerator and denominator.

To convert a fraction into a decimal number, divide the numerator by the denominator

so

The statement is False

Answer:

true

Step-by-step explanation:

1: An isosceles triangle XYZ has an equal side XY and XZ of length 16 cm. Of the third side YZ is 20 cm, calculate the altitude the triangle Leave Answer in surd form​

Answers

Answer:

2√39 cm

Step-by-step explanation:

ΔXYZ is an isosceles triangle & XY = XZ, therefore:

YX' = X'Z

      = 20 ÷ 2

      = 10 cm

ΔXYZ' is a right triangle, therefore:

XY² = YX'² + XX'²

16² = 10² + XX'²

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XX' = √156

      = 2√39 cm

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Answers

B. ∠E and ∠H are alternate exterior angles
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