All categories

3 years ago

Which of the following expressions are equivalent to 7.2 - 3.6?

Mathematics

2 answers:

Natalka [10]3 years ago

8 0

B and c
This is true because adding a negative is the same as subtracting

GuDViN [60]3 years ago

8 0

Answer:

B and C

Step-by-step explanation:

7.2 - 3.6 is the original equation

B states that 7.2 + -3.6 is equivalent, and it is right because and positive and negative multiplied by each other gives a negative

C states that 7.2 + (-3.6) is equivalent, and it is also correct because it would still be a negative number because its subtracting

A and D would just add up so it wouldn't be equivalent to 7.2 - 3.6

You might be interested in

Milan fills an aquarium to a depth of 3/8 meters in 6 minutes.

Nadya [2.5K]

Answer:

1/16m per minute

Step-by-step explanation:

If Milan fills the aquarium to a depth of 3/8 in 6 minutes then just divide 3/8 by 6 to find how much she fills in 1 minute

5 0

3 years ago

Wich algebraic expression represents ”forty times a number”? 40+n 40n n-40 40/n

Reika [66]

The answer to the problem is 40n

4 0

3 years ago

Read 2 more answers

Please help with this thank you

cluponka [151]

The answer to the question

8 0

3 years ago

F(x)=x^2+10x-12

weqwewe [10]

Answer:

Therefore the two values required are 2.08 and -11.08.

Step-by-step explanation:

i) f(x) = $x^{2}$ + 10x - 12 is a quadratic equation and a quadratic equation will have two roots whose values when substituted in to the given quadratic equation will give the value.

ii) The question is therefore essentially asking us to find the roots of the given quadratic equation.

This can be done by equating the given quadratic equation to zero and then solving the equation for its roots.

∴ $x^{2}$ + 10x -12 = 0 ⇒ x = (-10 ± $\sqrt{10^{2} +(48)}$ ) ÷ 2

= (-10 ± 12.166)÷2 = 2.08, -11.08

Therefore the two values required are 2.08 and -11.08

3 0

3 years ago

Which equation represents a function?

Len [333]

Answer:

D) y= 3x^2 + 2 represents a function.

3 0

3 years ago