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4 years ago

Solve for x. 5(2x - 1) = 6 x = 1/10 x = 11/10 x = 1/2

Mathematics

1 answer:

Inessa [10]4 years ago

4 0

So you divide both sides by the numeric factor on the left side, then solve..

- x = 11/10

You're welcome..

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Write 320 g as a fraction of 2 kg. Give your answer in its simplest form.

Kitty [74]

Answer:

4/25

Step-by-step explanation:

Let's make the units the same :

2 kg = 2000 g

Now lets simplify this fraction :

Divide top and bottom by 2 until you can't :

320/2000 = 160/1000

160/1000 = 80/500

80/500 = 40/250

40/250 = 20/125

Now we divide top and bottom by 5 as 2 is not a factor of 125 :

20/125 = 4/25

This is our final answer

Hope this helped and brainliest please

4 0

2 years ago

What is the exact value of sin(105°)? ANSWER - D) sqrt(2 + sqrt3)/2

Fofino [41]

Answer:

$\sin 105^{\circ} = \frac{\sqrt{6}+\sqrt {2}}{4}$

Step-by-step explanation:

We can use the following trigonometrical identity:

$\sin (\alpha - \beta) = \sin \alpha \cdot \cos \beta - \cos \alpha \cdot \sin \beta$ (1)

Where $\alpha$ , $\beta$ are angles, measured in sexagesimal degrees.

If we know that $\alpha = 135^{\circ}$ and $\beta = 30^{\circ}$ , then the value of the given function is:

$\sin 105^{\circ} = \sin 135^{\circ}\cdot \cos 30^{\circ} - \cos 135^{\circ}\cdot \sin 30^{\circ}$

$\sin 105^{\circ} = \left(\frac{\sqrt{2}}{2} \right)\cdot \left(\frac{\sqrt{3}}{2}\right)-\left(-\frac{\sqrt{2}}{2} \right)\cdot \left(\frac{1}{2}\right)$

$\sin 105^{\circ} = \frac{\sqrt{6}}{4}+\frac{\sqrt{2}}{4}$

$\sin 105^{\circ} = \sqrt{\frac{6}{16} }+\sqrt{\frac{2}{16} }$

$\sin 105^{\circ} = \sqrt{\frac{3}{8} }+\sqrt{\frac{1}{8} }$

$\sin 105^{\circ} = \frac{\sqrt{3}+1}{2\cdot \sqrt{2}}$

$\sin 105^{\circ} = \frac{\sqrt{6}+\sqrt {2}}{4}$

7 0

3 years ago

He fourth-grade students at Curtis Estabrook make up 0.3 of all students at the school. What fraction is equivalent to 0.3?

BartSMP [9]

Answer:

3/10

Step-by-step explanation:

fouth grade students at Estrabook make up 0.3 percents of the students at school

The fraction is therefore equivalent to

= 3/10

4 0

3 years ago

Combine like terms to create an equivalent expression. Enter coefficients as simplified proper or improper fractions or integers

Art [367]

Answer:

Step-by-step explanation:

The first (and only step) is to remove the brackets.

-1/2 * - 3y = 3/2y Two minus make a plus

-1/2 * 10 = - 5

Answer: 3/2 y - 5

8 0

3 years ago

HELP PLEASE!!! Answer: ?

padilas [110]

Answer:

third choice

Step-by-step explanation:

8 0

3 years ago