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3 years ago

write write a subtraction sentence where the difference is positive. Use a positive and negative integer?

Mathematics

2 answers:

nekit [7.7K]3 years ago

5 0

15.75 -(-3.85) + (-2.54)

34kurt3 years ago

5 0

When you subtract a negative number, it is the same as additon.
Therefore if you subtract a negative number from a positive number, the result will be positive.

9-(-2)=11

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2y+7z-2z+4y+8+y+2 Combine Like Terms

Andrew [12]

Answer:

7y+5z+10

Step-by-step explanation:

7y+5z+10

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3 years ago

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Change the subject of the formula L = v 4kt - p to k.

Romashka [77]

Answer:

$\boxed{k = \frac{L^2 + p}{4t}}$

General Formulas and Concepts:

Algebra I

Basic Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify given.

$\displaystyle L = \sqrt{4kt - p}$

Step 2: Solve for k
We can use equality properties to help us rewrite the equation to get k as our subject:

Let's first square both sides:

$\displaystyle\begin{aligned}L = \sqrt{4kt - p} & \rightarrow L^2 = \big( \sqrt{4kt - p} \big) ^2 \\& \rightarrow L^2 = 4kt - p \\\end{aligned}$

Next, add p to both sides:

$\displaystyle\begin{aligned}L = \sqrt{4kt - p} & \rightarrow L^2 = \big( \sqrt{4kt - p} \big) ^2 \\& \rightarrow L^2 = 4kt - p \\& \rightarrow L^2 + p = 4kt \\\end{aligned}$

Next, divide 4t by both sides:

$\displaystyle\begin{aligned}L = \sqrt{4kt - p} & \rightarrow L^2 = \big( \sqrt{4kt - p} \big) ^2 \\& \rightarrow L^2 = 4kt - p \\& \rightarrow L^2 + p = 4kt \\& \rightarrow \frac{L^2 + p}{4t} = k \\\end{aligned}$

We can rewrite the new equation by swapping sides to obtain our final expression:

$\displaystyle\begin{aligned}L = \sqrt{4kt - p} & \rightarrow \boxed{k = \frac{L^2 + p}{4t}}\end{aligned}$

∴ we have changed the subject of the formula.

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Learn more about Algebra I: brainly.com/question/27698547

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Topic: Algebra I

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2 years ago

What is the product of (–0.9)(–2.4)? –3.3 –2.16 2.16 3.3

saul85 [17]

The answer would be 2.16.

This is because the two negatives would cancel each other out when multiplying. This would basically make the question $0.9*2.4$ .
Now 3.3 is definitely not less than 2.4, so the answer would be 2.16

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3 years ago

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Which of the following is the solution to the equation below?

nasty-shy [4]

Answer:

Step-by-step explanation:

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2x = 20

x = 10

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2 years ago