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stellarik [79]
3 years ago
7

The sum of a certain number and -3.4 is -8.1 find the number​

Mathematics
2 answers:
pentagon [3]3 years ago
6 0

Answer:

-4.7

Step-by-step explanation:

-8.1 + -3.4 = -4.7

This works because - and + are inverse operations, so you can use + to help find a - problem or see if it's correct, or vise versa.

alexira [117]3 years ago
5 0

Answer:

4.7

Step-by-step explanation:

If you use the rules of the signs to eliminate the minuses and then substract 8.1 from 3.4 you get 4.7 which, if you sum it with 3.4 gives 8.1

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Please explain your answer as well, THANKS!!!
dusya [7]

Answer:

11,232,000

Step-by-step explanation:

The key to this problem is knowing "repetition is NOT ALLOWED".

<u>For the first 3 letters slot:</u>

For the 1st slot, we can pick any of the 26 alphabets

For the 2nd slot, we can pick any of the 25 remaining alphabets (since 1 is already taken)

For the 3rd slot, we can pick any of the 24 remaining letters (since 2 is already taken)

<u>For the three digits slot:</u>

For the 1st slot, we can pick any one of the 10 digits

For the 2nd slot, we can pick any one of the 9 digits left, since 1 is taken already

For the 3rd slot, we can pick any one of the 8 digits left, since 2 is already taken

The number of license plates, thus, would be all of these multiplied together:

26 * 25 * 24 * 10 * 9 * 8 = 11,232,000

7 0
3 years ago
What is the definition of a ray
Elan Coil [88]
Mathematically, a ray is a portion of a line which starts at a point and goes off in a particular direction to infinity.


4 0
4 years ago
Solve the simuteneous equation<br>4x+2y=6<br>x-2y=9​
Naya [18.7K]

Answer:

find the same x-value and the same y-value that satisfies both ... 1 2 3. + 4 5 6. 5 7 9 ... + (4x – 2y + 9 = 0).

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I need help with both of these problems
GREYUIT [131]
The first question is D because if the
y-intercept is 1 then every point moves down three units.

The second question is J because a vertical line is not a function so it can’t be a linear function.
8 0
4 years ago
Sandra has 1/2 of cup of sugar. She needs 3/4 of a cup of sugar to complete a recipe. What fraction of the required amount does
ValentinkaMS [17]
Example: Set up proportions.

3/4 cups → 1 batch
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x = 2(3/4) = 6/4 = 1 1/2 cups

3/4 cups → 1 batch
y cups → 9 batches

y = 9(3/4) = 6 3/4 cups
7 0
3 years ago
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