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Leona [35]
3 years ago
11

Which of the expressions have positive values and which have negative values 7-(-4) -3+(-2) 5-8 -10+12

Mathematics
1 answer:
barxatty [35]3 years ago
4 0

Answer:

Positive: 7-(-4) and -10+12

Negative -3+(-2) and 5-8

Step-by-step explanation:

Addition and subtraction rules:

2 negatives make a positive

A bigger positive number added to a smaller negative number is positive

A negative plus a negative is a negative.

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LM = 9, NR = 16, SR = 8. Find the perimeter of triangle LRN.
sweet [91]
<h2>D. 50 units</h2>

Hi, I’m Lena and I will be answering your question to the best of my ability. If you have any further questions after my answer, do not hesitate to ask me! ツ

♡ Let’s look at the main important thing(s) that will lead you in the correct path.

♥ The perimeter is the outside, it is <em>around</em> the figure. When you see those inner triangles, do not pay attention to them! They are just there to make your overthink the question.

♡ Let's solve!

♥ To begin, let's take LM. It already gives you half the segment, so all you need to do is double the number. 9*2=18.

♥ Now, let's take a look at NR. They already give you the segment as a whole, so you do not need to worry about it!

♥ Look at SR. You do the same thing as you did to LM, double the number. 8*2=16.

Now, we add all the numbers to get our final answer.

18+16+16=50.

3 0
3 years ago
How do I Subtract fractions! Please explain step by step to get marked
Fynjy0 [20]

Answer:

1) Make sure the bottom numbers (the denominators) are the same.

2) Subtract the top numbers (the numerators). Put the answer over the same denominator.

3) Simplify the fraction (if needed).

Step-by-step explanation:

Hope this helps!

6 0
2 years ago
HELP PLEASE!!!!!! I need help Urgent Help
gavmur [86]
This is just a porportion. So if 250 meters is 1 meter than: 250/1

And it wants to know the height. So we have the first number but not the second. So we'll use x: 212/x

Set them equal to each other 250/1=212/x

Cross multiply: 212=250x

Divide to find x: 212/250=x
x=212/250
x=0.848

So the height of the model, to the nearest 10th would be 0.8 meters.
5 0
3 years ago
If the length of one leg of a right triangle is 3 and the hypotenuse is √34, what is the length of the other leg?
Elenna [48]

To answer this question you must use Pythagorean theorem

a^{2} +b^{2}=c^{2}

a and b are the legs (the sides that form a perpendicular/right angle)

c is the hypotenuse (the side opposite the right angle)

In this case...

a = 3

b = unknown

c = √34

^^^Plug these numbers into the theorem

3^{2} +b^{2} =√34^{2}

Simplify

9 + b² = 34

solve for b

b^{2} = 25

Take the square root of both sides to cancel out the square from the b

√b² = √25

b = 5

Hope this helped!

~Just a girl in love with Shawn Mendes

3 0
3 years ago
Anyone know how to do tables?
dimaraw [331]
I think table a but i’m not 100% sure, sorry
7 0
3 years ago
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