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Andre45 [30]
2 years ago
8

Fraction help for math class help. Simplify

Mathematics
2 answers:
Arlecino [84]2 years ago
8 0

Answer:

7 13/20

Step-by-step explanation:

add whole numbers add fraction parts

3+4=7

2/5=8/20

1/4=5/20

8/20+5/20=13/20

7+13/20=7 13/20

guajiro [1.7K]2 years ago
4 0

Answer:

7 13/20

Step-by-step explanation:

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PLEASE HELP ASAP!!!!
zmey [24]

Answer:

no

Step-by-step explanation:

6 0
2 years ago
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trent, pam, and linda will work together to paint a poster that is 4 feet long Each student will paint an equal length of the po
Tasya [4]
The whole length of the poster is 4 feet. There are three people who will paint an equal length, so this means that we need to divide the 4 feet of the poster between 3 people.

4 ÷ 3 <span>≈ 1.3

Each student will paint 1.3 feet, or 1 foot and 4 inches of the poster.</span>
8 0
3 years ago
How can you use the backward problem-solving strategy to solve a two-step equation
neonofarm [45]
Let's use the equation 5x - 20 = 10 as an example for this.

To work backwards from this, you would add the same amount to each side.

You want to isolate the 5x so that you can solve for x.

To do that, you would add 20.

But again, you must add and subtract the same amount to both sides.

So it would look a bit like this:

5x - 20 + 20 = 10 + 20

That would simplify to 5x = 30, or in other words, x = 6.

Basically, you isolate the multiple of the variable then divide the answer to the equation from that multiple.

In the example, 5 is the multiple and after isolating it, the answer was 30.

30 ÷ 5 = 6

x = 6

Hope this helps :)
5 0
3 years ago
How many inches are in three fourths of a yard
guapka [62]
The answer is 27 inches. I am 90% sure of it. It is 27 because a yard has 36 inches. So you do the rule of three. 36/4*3. 36/4 is 9. 9*3=27. I hope you pass your test! :D
3 0
3 years ago
I finished question 1 but I could use some help on the others​
Eddi Din [679]

Answer:

With the first four questions, all you need to do is find a value of x that gives you a zero value in any one of those brackets.  Let's do it.

You said you finished 1, so let's skip it.

I can't give you a full answer for question 2, because you didn't capture the entire expression in the screenshot.  I can see that the values 3 and 0.125 would give zero values, but I can't tell you the last.

For question three, we need to find x values where either 9x + 3 = 0, or x² - 9 = 0.  There are three values that meet those conditions.  You can solve it just by assigning a zero value and solving for x:

9x + 3 = 0\\3x + 1 = 0\\3x = -1\\x = -1/3

For the second term actually has two solutions, because a squaring a number also causes negatives to be converted to positives.  Another way of seeing this is to notice that the second term is actually a difference of squares:

p(x) = (9x + 3)(x^2 - 9)\\= (9x + 3)(x + 3)(x - 3)

so in this case x could be -1/3, -3, or 3 to give a zero value.

For question four, you can only get a zero if you use imaginary numbers, as no real number can be squared to give you a negative.  So the only answers to that are 5i, or -5i.

With questions five six seven and eight, we just need to make exceptions for zero denominators, so:

For question 5, you can x can be any real number except -4, 2 and 7

For 6, x can be anything but 3, 1/8th or 5

for 7, We again have that difference of squares, so the actual denominator is (9x + 3)(x + 9)(x - 9), meaning x can be anything but -1/3, -9, or 9

And finally for question 8, we again have a squaring, meaning that only an imaginary number will cause division by zero, meaning x can't be 5i or -5i.

7 0
2 years ago
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