Fractions and Decimals

Discrete Mathematics

Differential Equations

Solved on Sep 21, 2023

Find the equation that represents "When 9 is multiplied by a number, the result is 90". A) $x-9=90$ B) $x \div 9=90$ C) $9+x=90$ D) $9x=90$

STEP 1

Assumptions1. We are looking for an equation that represents the statement "When9 is multiplied by a number, the result is90." . The number that9 is multiplied by is represented by the variable x.

STEP 2

Based on the statement, we can form the equation as follows $9 \times x =90$

STEP 3

Now, we compare this equation with the given options.
Option A $x -9 =90$ does not fit the statement because it represents subtraction, not multiplication.
Option B $x \div9 =90$ does not fit the statement because it represents division, not multiplication.
Option C $9 + x =90$ does not fit the statement because it represents addition, not multiplication.
Option D $9 \times x =90$ fits the statement because it represents multiplication, which is what the statement describes.
The correct equation that fits the statement is $9 \times x =90$ .

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