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3 years ago

Solve for y 5y - 9 = -3y + 7

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

4 0

The answer is 2 !!!!!!!!!!!

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Can someone explain this to me:)

Ostrovityanka [42]

Answer:

B) m = 2 , b = -3

Step-by-step explanation:

b = y-intercept

The y-intercept is -3

b = -3

m = slope

The slope is 2

m = 2

7 0

3 years ago

Read 2 more answers

The selling price of an item is $600. After 6 months of not selling, it is marked down by 30% . After another 6 months of not se

Bingel [31]

The sale price after both markdowns will be $336

Explanation

The selling price of an item is $600. After 6 months of not selling, it is marked down by 30%

So, the marked down amount after 6 months $=\$ 600*0.30= \$180$

and the selling price after first 6 months will be: $\$600-\$180=\$420$

After another 6 months of not selling , it is further marked down by 20%. So, the marked down amount now $= \$420*0.20=\$84$

Thus, the final selling price after all markdowns $=\$420-\$84=\$336$

4 0

3 years ago

You are planning a movie marathon. Each movie lasts 3/2 hours. You want to watch 4 movies nonstop. How many hours will your movi

Citrus2011 [14]

Answer:

Your movie marathon will last 6 hours.

Step-by-step explanation:

This question can be solved using a rule of three.

Each movie lasts $\frac{3}{2} = 1.5$ hours. How much do 4 movies last?

1 movie - 1.5 hours

4 movies - x hours

x = 4*1.5 = 6

Your movie marathon will last 6 hours.

5 0

3 years ago

PRECALC QUESTION! Convert the polar representation of this complex number into its standard form: z = 2(cos 11pi/6+ i sin 11pi/6

Tanzania [10]

$\bf z=2\left[ cos\left( \frac{11\pi }{6} \right) + i\ sin\left( \frac{11\pi }{6} \right) \right]\qquad 
\begin{cases}
r=2\\
\theta=\frac{11\pi }{6}\\
-----\\
a=x=rcos(\theta)\\
b=y=rsin(\theta)
\end{cases}\implies a+bi
\\\\\\
2cos\left( \frac{11\pi }{6} \right)+2sin\left( \frac{11\pi }{6} \right)\ i\implies 2\cdot \cfrac{\sqrt{3}}{2}+2\cdot \cfrac{-1}{2}\ i\implies \sqrt{3}-1i
\\\\\\
\boxed{\sqrt{3}-i}$

7 0

3 years ago

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When we rewrite an expression so that it has no grouping symbols and all of the like terms have been combined, we ___ it.

Dmitriy789 [7]

Answer:

"simplify"

Step-by-step explanation:

The notion of simplifying an expression depends on the expression. For the one offered as an example, the simplification steps required are eliminating parentheses and combining like terms.

Other possible simplification steps include combining fractions, reducing fractions, and rationalizing denominators (eliminating surds or complex numbers).

It appears the vocabulary word that is desired in the blank is simplify.

8 0

3 years ago

Read 2 more answers