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stich3 [128]
4 years ago
8

I need help ASAP how ever gets the right answer first I wil mark Brainliest!!!

Mathematics
1 answer:
Lemur [1.5K]4 years ago
6 0
12 fee is the answer 2x6 equals 12.
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A scientist makes an acid solution by adding drops of acid to 1.2 L of water. The final volume of the acid solution is 1.202 L.
laila [671]

Answer:

40 drops

Approximately 0.166 %

Step-by-step explanation:

It would be easier to work the same units for volume

Since there are 1000 ml in a liter

Original water volume 1.2 L = 1.2 x 1000 = 1200 mLl

The final volume of the acid-water solution = 1.202 L = 1202 mL

So total volume of acid added = 1202-1200 = 2 mL

Each drop of acid is 0.05 mL

Number of drops added = 2/.05 = 40 drops

Percent of acid in acid solution = (Volume of acid added)/(Final volume) x 100 = (2/1202) ≈ 0.00166 x 100 ≈ 0.166 %

7 0
2 years ago
Please someone help me solve this. in graphic method.​
fiasKO [112]

Answer:

just graph it mate

Step-by-step explanation:

5 0
4 years ago
Four more than twice a number si 24. Write <br> the equation in Numbers
kvv77 [185]

Answer:

4+2x=24

Step-by-step explanation:

4 more = 4+

twice a number = 2x (multiply the input by two)

is 24 = =24 (after inputing the right number into "x" it should equal 24.

Hoped this helped

6 0
3 years ago
Solve for x, l need helpppppppp
zimovet [89]
4x+3+27=90
4x+30=90
90-30 =60
60/4 =15
X=15
5 0
3 years ago
Read 2 more answers
Find the magnitude and direction of the vector &lt;3,9&gt;. Round angles to the nearest degree and other values to the nearest t
Katen [24]

Answer:

Magnitude: 3√10

Direction angle: 71.56°

Step-by-step explanation:

The magnitude ||v|| of a vector <a,b>, would be:

||v||=\sqrt{a^{2}+b^{2}

||v||=\sqrt{3^{2}+9^{2}

||v||=\sqrt{9+81}

||v||=\sqrt{90}

||v||=3\sqrt{10}

The vector's reference angle would be:

tan\alpha =|\frac{b}{a}|

tan\alpha =|\frac{9}{3}|

tan\alpha =|3|

tan\alpha =3

\alpha = 71.56

If \alpha is your reference angle, then your direction angle ∅ depends on what quadrant the vector is located in. Since <3,9> is located in Quadrant I, then ∅= \alpha, which means your direction angle is also 71.56°

8 0
3 years ago
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