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wariber [46]
3 years ago
11

Solve for y. - 3y + 2 = -10y + 30 Simplify your answer as much as possible.

Mathematics
1 answer:
Marizza181 [45]3 years ago
3 0

Answer: y = 4

Step by step explanation:

−3y + 2 = −10y + 30

Step 1: Add 10y to both sides.

−3y + 2 + 10y = −10y + 30 + 10y

7y + 2 = 30

Step 2: Subtract 2 from both sides.

7y + 2 − 2 = 30 − 2

7y = 28

Step 3: Divide both sides by 7.

7y/7  =  28/7

y = 4

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3-3k+7k=5b solve for k 
DaniilM [7]
3-3k+7k=5b \\\\ 3+4k=5b \\\\ 4k=5b-3 \\\\ \boxed{k=\frac{5b-3}{4}}
5 0
3 years ago
The sum of twelve and four times a number is 36. What is the number?
Greeley [361]

Answer:

8

Step-by-step explanation:

12 +4x = 36

Then solve the linear eqn

3 0
3 years ago
What is the 100th term of the arithmetic sequence below?<br> 4, 11, 18, 25
galina1969 [7]

Answer:

a₁₀₀ = 697

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 4 and d = a₂ - a₁ = 11 - 4 = 7 , then

a₁₀₀ = 4 + (99 × 7) = 4 + 693 = 697

8 0
3 years ago
Determine two coterminal angles (one positive and one negative) for each angle. Give your answers in radians. (Enter your answer
vagabundo [1.1K]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

In point a:

\to \frac{5 \pi }{6}

calculating a positive coterminal angle:

\to \frac{5 \pi }{6} + 2 \pi \\\\ \to \frac{5 \pi +12 \pi }{6} \\\\ \to \frac{17 \pi }{6} \\\\

calculating negative coterminal angle:

\to \frac{5 \pi }{6} -2\pi \\\\ \to \frac{5 \pi - 12 \pi }{6} \\\\ \to \frac{ - 7 \pi }{6} \\\\

In point b:

\to \frac{-9 \pi }{4}

calculating a positive coterminal angle:

\to \frac{ -9 \pi }{4} + 2 \pi  \ \   = \frac{-9 \pi + 8 \pi }{4} \\\\

\to \frac{ - \pi }{4} + 2 \pi  \ \   = \frac{- \pi + 8 \pi }{4} \\\\

= \frac{ 7 \pi}{4}

calculating a negative coterminal angle:

\to \frac{ -9 \pi }{4} - 2 \pi  \\\\   \to \frac{-9 \pi - 8 \pi }{4} \\\\ \to  \frac{-17 \pi }{4}

3 0
3 years ago
there is 1 litre of tea in a teapot, alex pours 275ml of the tea into a cup what percentage of the tea has alex poured
Nuetrik [128]

Answer:

27.5%

Step-by-step explanation:

Given:

  • 1 Liter In Teapot
  • Alex poured 275 milliliters of the tea into a cup

Review:

  • 1,000 Milliliters = 1 Liter

Concepts:

  • A liter is a noun meaning a unit of capacity redefined in 1964 by a reduction of 28 parts in a million to be exactly equal to one <em>cubic </em>decimeter. It is equivalent to <em>1.0567</em>  U.S. liquid <u>quarts </u>and is equal to the volume of 1 kilogram of distilled <em>water</em> at 4°C.
  • A millimeter is a noun meaning a unit of capacity <em>equal</em> to one <u>thousandth </u>of a liter, and equivalent to <em>0.033815</em> fluid<u> </u><u>ounce</u>, or<em> 0.061025</em><em> </em>cubic<u> inch</u>.

Formula:

  • The <em>mℓ</em> to <em>ℓ</em> formula is<em> [L] = [mL] / 1000</em>.

Now we must convert <em>275</em> milliliters to liters.

1. Divide the volume by <em>1,000.</em>

275 ÷ 1000 = 0.275

2. Add the Unit Symbol for Liter.

0.275 ⇒ 0.275 L

Now we have to find how much of 1 liter- 0.275 liters as a percentage is.

To convert <em>0.275</em> to percent multiply <em>0.275</em> by <em>100</em>. The result is <em>27.5 </em>percent, or, using the percent sign, <em>27.5 %.</em>

7 0
1 year ago
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