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2 years ago

Erin starts with the number 4, adds -3, then subtracts -4. What is the result?

Mathematics

2 answers:

Ksju [112]2 years ago

8 0

Answer:

Erin gets a result number of 5

Step-by-step explanation:

Assuming this is a 'word problem.' -- These are small numbers so you could use your hand for visual. :)

Start with 4 fingers up. (adding a negative to a positive is basically subtraction sooo...) put 3 fingers down. You now have one finger up. (subtracting a negative is just addition, think about taking those two minus signs and putting them together to get an addition sign.) now add 4 fingers to your one finger. You should be left with 5 fingers up!

Hope I helped. Hang in there, it will get easier!

schepotkina [342]2 years ago

3 0

Answer: 5

Step-by-step explanation:

Start with number 4

Adds -3

Then subtracts -4 is represented like this

4+(-3)-(-4)=4-3+4=5

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Alex's friend Pablo comes up with an exact equation to find out how many bags he needs. Use his equation

Bezzdna [24]

Answer:

8.5 bags are needed.

Step-by-step explanation:

Given : Number of bags needed $B=x(2x+7)+3(2x+7)+(x+4)$

$(2x + 7) = 4$

To Find : how many bags he needs?

Solution :

$(2x + 7) = 4$

$2x=-3$

$x=-\frac{3}{2}$

Now we are given that Number of bags needed $B=x(2x+7)+3(2x+7)+(x+4)$

Substitute the value of x

$B=(\frac{-3}{2})(2(\frac{-3}{2})+7)+3(2(\frac{-3}{2})+7)+((\frac{-3}{2})+4)$

$B=8.5$

Hence 8.5 bags are needed.

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2 years ago

4 lines are shown. A line with points T, R, W intersects a line with points S, R, V at point R. Another line extends from point

lianna [129]

Answer:

The Answer is B

Step-by-step explanation:

Edgenuity ;)

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2 years ago

A lot cost $120,000 the house cost 3 times more than a lot how much did the house cost

raketka [301]

The house 3 times more is 360,000

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2 years ago

Solving for a Confidence Interval: Algebra 2 points possible (graded) In the problems on this page, we will continue building th

baherus [9]

Answer:

Step-by-step explanation:

1) The given inequality is

$|\sqrt{n} \frac{(\bar R_n-p)}{\sqrt{p(1-p)} } |$

$\to n( \bar R _n - p)^2$

$\to n\bar R +np^2-2nR_np$

Arranging the terms with p² and p, we get

$p^2(n+q^2_{\alpha /2)-p(2n \bar R _n+q^2_{\alpha / 2})+n \bar R ^2 _n$

Hence, the inequality is of the form

Ap² + Bp + c < 0

2. A quadratic equation of the form

Ap² + Bp + c < 0 with A > 0 looks like

<u>Check the attached image</u>

The region where the values are negative lies between p₁ and p₂ ...

The p₁ < p < p₂

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2 years ago

What can you say about the end behavior of the function f(x)=log10(5x-1)

natima [27]

The given function is
f(x) = log₁₀(5x-1)

As x -> -∞, the argument of the log function becomes a large negative number.
Because the log of a negative number is undefined, f(x) is undefined as x -> -∞.

As x -> +∞, the argument of the log function becomes a large positive number.
Therefore f(x) -> +∞ as x -> +∞.

Answer:
As x -> -∞, f(x) is undefined.
As x-> +∞, f(x) -> +∞.

6 0

2 years ago

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