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3 years ago

Sharon pours salt into a glass of water. The salt dissolves. The substance in the glass is a(n) __________.

Mathematics

2 answers:

slega [8]3 years ago

5 0

Answer:

Issa Mixture.

Step-by-step explanation:

A salt is a compound. ... Na exists in sodium compounds and Cl as Cl2 or chlorinated compounds. A common example would be table salt where both exist( Sodium Chloride). Sodium Chloride solution consisting of NaCl and water is a mixture. An example would be sea water which consists of several salts. Ur welcome.

kirill115 [55]3 years ago

3 0

The salt is the solute; water is the solvent. Mixed together they become a solution.

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Given: ∆PQR, m∠R = 90° m∠PQR = 75° M ∈ PR , MP = 18 m∠MQR = 60° Find: RQ

tensa zangetsu [6.8K]

Answer: RQ= 8.99 ( approx)

Step-by-step explanation:

Let MR= x

Since, In triangle, PRQ, tan 75°= $\frac{18+x}{RQ}$

⇒ RQ= $\frac{18+x}{tan 75^{\circ}}$

Now, In triangle MRQ,

tan 60°= $\frac{18+x}{RQ}$

⇒ RQ= $\frac{x}{tan 60^{\circ}}$

On equating both values of RQ,

$\frac{18+x}{tan 75^{\circ}}=\frac{x}{tan 60^{\circ}}$

⇒ $\frac{18+x}{x}=\frac{tan 75^{\circ}}{tan 60^{\circ}}$

⇒ $\frac{18+x}{x}=2.15470053838$

⇒ $18=2.15470053838x-x$

⇒ $x=15.5884572681$ ≈15.60

Thus RQ=8.99999999999≈8.99

6 0

3 years ago

Find the value of c that makes each trinomial a perfect square.

gavmur [86]

Answer:

The answer to your question is the letter a.

Step-by-step explanation:

Data

x² + 12x + c

If this trinomial is a perfect square trinomial, the third term must be half the second term divided by the square root of the first term, and to the second power.

-Get half the second term

12x/2 = 6x

-Divide by the square root of the first term

6x/x = 6

-Express the result to the second power

6² = 36

-Write the perfect square trinomial

(x² + 12x + 36) = (x + 6)²

6 0

3 years ago

diamong [38]

Answer: