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3 years ago

What is 28 - ( -15)

Mathematics

2 answers:

bearhunter [10]3 years ago

5 0

Answer:

Step-by-step explanation:

When subtracting a negative number, the negatives cancel out. This gives us 28 + 15 which is 43.

Sidana [21]3 years ago

3 0

Answer:

Step-by-step explanation:

so when subtracting a negative number the number becomes positive and the problem become 28 + 15 because the negative (subtraction) signs cancel out

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Rt=R1 R2__, determined Rt when R1=100 and R2 =200? R1+R2 (electronics)

zloy xaker [14]

Answer:

$R_t=300\ \Omega$

Step-by-step explanation:

Given that,

R₁ = 100 ohms

R₂ = 200 ohms

We need to find the equivalent resistance of the circuit. So,

$R_t=R_1+R_2\\\\R_t=100+200\\\\R_t=300\ \Omega$

So, the equivalent resistance is $300\ \Omega$ .

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3 years ago

Which number is not in scientific notation?

galben [10]

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4 years ago

Read 2 more answers

Ms. Hamby gave a quiz. Two students’ work and the answer key are shown. Ms. Hamby accepts equivalent answers in any form.

Luden [163]

Answer:

Student A and Student B both answered 2 questions correctly.

See explanation below

Step-by-step explanation:

Note: that answers in the form:

$\frac{a}{-b}=\frac{-a}{b}=-\frac{a}{b}$

ARE ALL EQUIVALENT.

First of all, 4/5 is equivalent to 0.8 if we do long division.

and 19/20 is 0.95 if we do long division.

Now, Student A:

Both of the fractions are correct and the negative sign is equivalent and makes the answer correct, so both are correct.

For Student B:

Similarly, both answers are correct for this student as well, looking at the equivalence we showed first.

Also, "-" (negative) in front of the parenthesis and inside parenthesis here doesn't matter.

Hence,

Student A and Student B both answered 2 questions correctly.

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4 years ago

Which number line shows the solution of 5x - 25 < -15?

Anit [1.1K]

I think a. But I don’t understand this question.

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3 years ago

Write an algebraic expression for the following: Four less than five times a number

eduard

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3 years ago