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Lapatulllka [165]
3 years ago
7

Please help me with my math test

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
7 0

Answer:

the anser is 5 grams

Step-by-step explanation:

no of nikel:9

total mass=45g

mass of 1 nickel =45/9=5 grams

brainliest plzzzz

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kotegsom [21]
The answer is 36 cups
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For which values of x is the expression undefined?<br> x2 – 49<br> x2 – 16
Lyrx [107]

You meant to say x^2 - 49 and the second binomial is x^2 - 16.

x^2 - 49 = (x - 7) (x + 7).

Set each factor to 0 and solve for x individually.

x - 7 = 0

x = 7

x + 7 = 0

x = -7

Do the same for x^2 - 16.

Here is the set up:

x^2 - 16 = (x - 4) (x + 4).

Take it from here.

4 0
3 years ago
I need help please !! Please be correct, and if you can please explain.
Kipish [7]

Answer:

a and c are undefined.

b and d are zero.

Step-by-step explanation:

Vertical lines are undefined because of division by 0  (a and c).

The run is zero.

Horizontal lines have a slope of 0 (b and d).

The rise is zero.

4 0
3 years ago
Pls help Question On the photo
Mrac [35]

Answer:

C. In step 2, Cindy should have multiplied both sides of the equation by 2.

Step-by-step explanation:

I'll go through the equation correctly, and then point out what would have happened.

3 = x/2 - 5

Add 5 to both sides. -5 and 5 cancel out.

8 = x/2

What Cindy should have done here is multiply by 2, not divide by 2. It is important to remember that you do the INVERSE operation to cancel out a number.

What would have happened here is that we have an extra step (though either way we still end up with x being 16.)

Correct Step 2:

Multiply both sides by 2. x/2 and 2x cancel out.

x = 16

Incorrect Step 2:

8/2 = (x/2)/2

4 = x/4

Multiply both sides by 4 (this would be the extra step!).

16 = x

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Answer:

Direct contr

Step-by-step explanation:

I took the test and the guy who said replication was wrong. He cost me a point

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3 years ago
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