MATHEMATICS MIDDLE SCHOOL

HELP it's a maths question worth 4 marks

Answers

Answer 1

Answer:

a = 3, b= - 4 and c = - 4

expand the left side using FOIL

(2x + 1)(ax + b) = 2ax² + 2bx + ax + b = 2ax² + x(2b + a) + b

compare the coefficients of expressions on left and right sides.

compare 2ax² + x(2b +a) + b with 6x² - 5x + c

coefficients of x² terms → 2a = 6 ⇒ a = 3

coefficients of x terms → 2b + a = - 5 → 2b + 3 = - 5 → 2b = - 8 ⇒ b = - 4

constant terms c = b = - 4

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Answers

#1. Simply because those measurements are actual measurements and it is really easy if you use a protractor.

Which expression is equivalent to 1/4 (2-5x+ 6)?

Answers

Answer:

Option B, -5/4x + 2

Step-by-step explanation:

Step 1: Combine like terms inside the parenthesis

$1/4(2 - 5x + 6)$

$1/4(8 - 5x)$

$(1/4 * 8) + (1/4 * -5x)$

$2 - 5/4x$

Answer: Option B, -5/4x + 2

the area of a square floor on a scale drawing is 100 square centimeters and the scale of the drawing is cm : 2 ft what is the area of the actual floor what is the ratio of the area in the drawing to the actual area

Answers

The actual floor is 200 square feet and the ratio is 100 square centimeters: 200 square feet

the ratio would be 50:1 because you would have to simplify the ratio 100:2

Please helpppif the slope of a line is 6 and a line is perpendicular to it, what is its slope?

Answers

Answer:

-1/6

Step-by-step explanation:

flip the slope

$(6)/(1)$

becomes

$(1)/(6)$

now the slope is going down so it becomes negative

= -1/6

What does it mean for a product of factors to be expressed using exponents

Answers

example:

7x7x7x7x7x7x7x7x7x7x7x7=84
there are 12 sevens
u put the deleted number as the big number (7) and the number of repeated numbers as the smaller sized number which is called the exponent (12)

How do you write 7.8 x 10squared in standard form

Answers

$7.8*10^2=7.8*100=780$

780= 7.8 x 100. = 7.8 x 10^2

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