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zhenek [66]
2 years ago
12

The sum of 8 and y is 5. what is y​

Mathematics
1 answer:
marshall27 [118]2 years ago
7 0

Answer:

y = -3

Step-by-step explanation:

As per the condition given

8 + y = 5

y = 5 - 8 = -3

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Ill give Brainliest!!!!!
Rus_ich [418]

Answer: The mass of solid a is 4800 grams

Step-by-step explanation:

Hi, to answer this question we have to apply proportions:

For solid b = 40.32 cm2 / 6912 grams

For solid a = 28 cm2 / x grams

Where x is the mass of solid a.

So:  

40.32 / 6912 = 28 / x  

x = 28 / (40.32 / 6912)

x = 4800 grams

The mass of a is 4800 grams

Feel free to ask for more if needed or if you did not understand something.

8 0
2 years ago
Read 2 more answers
Andrea ran 400 meters in gym class How many cm. did she run
aliya0001 [1]
1 m = 100 cm

Multiply:

100 * 400 = 40000

So she ran 40,000 centimeters.
7 0
2 years ago
What is the sum of the polynomials? (6x + 7 + x2) + (2x2 - 3)
astraxan [27]

Answer:

3x^2+6x+4 is the answer :D

8 0
3 years ago
Read 2 more answers
Please help me asap
Sonja [21]

Step-by-step explanation:

4/sin45=

4 \sqrt{2}

6 0
2 years ago
X + 2y = 5<br> x - 3y = 7 <br> What is the value of the y-determinant? <br> -2<br> -1 <br> 2
grandymaker [24]

Answer:

y-determinant = 2

Step-by-step explanation:

Given the following system of equation:

  • x + 2y = 5
  • x - 3y = 7

Let's represent it using a matrix:

\left[\begin{array}{ccc}1&2\\1&-3\end{array}\right] = \left[\begin{array}{ccc}5\\7\end{array}\right]

The y‐numerator determinant is formed by taking the constant terms from the system and placing them in the y‐coefficient positions and retaining the x‐coefficients. Then:

\left[\begin{array}{ccc}1&5\\1&7\end{array}\right]

y-determinant = (1)(7) - (5)(1) = 2.

Therefore, the y-determinant = 2

5 0
3 years ago
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