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Licemer1 [7]
3 years ago
14

How many solutions does the following system of equations have? y=5/2x+2 and 2y=5x+8

Mathematics
1 answer:
Harman [31]3 years ago
8 0
None they are parallel lines - same slope different y intercept
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Simplify<br><br> -(9w^3+3z+4) -2 (-7z-5w^3)
Arada [10]

Answer:

w^3 + 11z - 4

8 0
3 years ago
Rewrite the expression without the negative exponent. 2x^−4
romanna [79]

Answer:

\frac{2}{x^4}


Step-by-step explanation:

The expression is 2x^{-4}

<u>We use the rule of exponents shown below to change the original to </u><u>"positive"</u><u> exponent form:</u>

<u>a^-b=\frac{1}{a^b}</u>


<em>Now we can change the original expression given into positive exponent:</em>

2x^{-4}\\=\frac{2}{x^4}

8 0
2 years ago
Read 2 more answers
You are saving for a spring break cruise for the end of march of the next year thag costs $600. You start at $50 in August. At t
Doss [256]
March is 8 months away from August and the target amount is $600.
August = $50
September = $50 + (0.2*50)=$60
October = $60 + (0.2*60)=$72
November=$72+(0.2*72)=$86.4
December=$86.4 + (0.2*$86.4)=$103.68
January=$103.68+(0.2*103.68)= $124.416
February=$124.416+(0.2*124.416)=$149.3
March=$149.3 +(0.2*149.4)=$179.2

Total amount = $824.6

Yes, she will have money for the trip
7 0
3 years ago
15.12 is what percent of 12?
Llana [10]

Answer:

<h2>126%</h2>

Step-by-step explanation:

\bold{METHOD\ 1}\\\\\begin{array}{ccc}15.12&-&p\%\\\\12&-&100\%\end{array}\qquad\text{cross multiply}\\\\\\12p=(15.12)(100)\\12p=1512\qquad\text{divide both sides by 12}\\p=126

\bold{METHOD\ 2}\\\\p\%=\dfrac{p}{100}\\\\p\%\ of\ 12\ is\ equal\ to\ 15.12:\\\\\dfrac{p}{100}\cdot12=15.12\\\\\dfrac{12p}{100}=15.12\qquad\text{multiply both sides by 100}\\\\12p=1512\qquad\text{divide both sides by 12}\\\\p=126

6 0
3 years ago
On Saturday, many tickets fir a hockey game were sold. Children and adult were in the ratio of 4:7. There are 88 tickets in tota
ollegr [7]

Answer:

<em>56 adult tickets were sold</em>

Step-by-step explanation:

Ratio of ticket sold to Children and adult is in the ratio 4 : 7

Total ratio = 4 +7 = 11

Ratio of adult = 7

Total ticket sold = 88

Number of adult tickets sold = Ratio of adult/Total ratio * Total ticket sold

Number of adult tickets sold = 7/11 * 88

Number of adult tickets sold = 7 * 8

Number of adult tickets sold  = 56 tickets

<em>Hence 56 adult tickets were sold</em>

3 0
2 years ago
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