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aliya0001 [1]
3 years ago
15

HELP ASAP!

Mathematics
2 answers:
mr Goodwill [35]3 years ago
7 0
62=14+2x i think im not 100 % sure but i think
Whitepunk [10]3 years ago
3 0
2x+14=62
the x is the unknown price of the concert tickets.
subtract 14 from both sides to get
2x=48
divide both sides by 2 to get
x=24.
so the two passes would cost 24, I assume. 
I haven't taken a math class in about a year, but this is how I learned to do it, so I hope it helps!
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Which equation represents a line that passes through (2, -1/2) and has a slope of 3?
Anastasy [175]

Answer:

Equation of line is:

y=3x-\dfrac{13}{2}

Step-by-step explanation:

Let equation of line be y=mx+c

where m is the slope of line and c is the y-intercept

Line passes through (2, -1/2) and has a slope of 3

i.e. (x,y)=(2, -1/2) and m=3

i.e.

-\dfrac{1}{2}=3\times 2+c\\ \\c= -\dfrac{1}{2}-6\\ \\c= -\dfrac{13}{2}

So, equation of line is:

y=3x-\dfrac{13}{2}

8 0
3 years ago
Read 2 more answers
A marketing researcher conducts a test to determine whether the number of chocolate chips per cookie differs significantly acros
Yuki888 [10]

Answer: the value for the associated test statistic is 1.2653

Step-by-step explanation:

Given that;

sample size one n₁ = 10

mean one x"₁ = 6.4

standard deviation one S₁ = 1.1

sample size two n₁ = 11

mean two x"₂ = 5.6

standard deviation one S₁ = 1.7

H₀ : μ₁ = μ₂

H₁ : μ₁ ≠ μ₂

Pooled Variance

sp = √( { [(n₁ - 1) × s₁² + (n₂ - 1) × s₂²] / (n₁ + n₂ - 2)} × (1/n₁ + 1/n₂))

we substitute

= √( { [(10 - 1) × (1.1)² + (11 - 1) × (1.7)²] / (10 + 11 - 2)} × (1/10 + 1/11))

= √( { [(9) × 1.21 + (10) × 2.89]  / (19) } × (0.1909))

= √({[ 39.79 ]  / 19} × (0.1909))  

= √( 2.0942 × 0.1909)

= √( 0.39978 )

= 0.63228

Now Test Statistics will be;

t = ( x"₁ - x"₂) / sp

we substitute

t = ( 6.4 - 5.6) / 0.63228

t = 0.8 / 0.63228

t = 1.2653

Therefore the value for the associated test statistic is 1.2653

5 0
3 years ago
Evaluate for x = -10 and y = 6<br><br> 3x + xy - 4y
Setler [38]
We plug in -10 as x and 6 as y. We get -30 - 60 - 24 = -90 - 24 = -114
---
Hope this helps!
==jding713==
8 0
3 years ago
Mercury is a persistent and dispersive environmental contaminant found in many ecosystems around the world. When released as an
ipn [44]

Answer:

The sample mean is \bar{x}=1.24 and the sample median is 0.56

Step-by-step explanation:

The sample mean \bar{x} of observations x_1,x_2,...,x_n is given by

\bar{x}=\frac{\sum x_i}{n}

Applying the above definition we get that

The sum of these 15 sample observations is

\sum x_i = 0.21+\:0.22+\:0.26+\:0.30+\:0.34+\:0.42\:+0.55+\:0.56+\:1.43+\:1.70+\:1.84+\:2.20+\:2.25+\:3.06+\:3.26\\\\\sum x_i =18.6

and the sample mean is

\bar{x}=\frac{18.6}{15}=1.24

The sample median is obtained by first ordering the <em>n</em> observations from smallest to largest (with any repeated values included so that every sample observation appears in the ordered list). Then,

Sample median = The single middle value if n is odd = (\frac{n+1}{2} )^{th}

Sample median = The average of the two middle values if n is even = average of (\frac{n}{2} )^{th} and (\frac{n}{2}+1 )^{th}

Applying the above definition we get that

The data is already ordered and n = 15 so,

Sample median =  (\frac{15+1}{2} )^{th}=8^{th} = 0.56

8 0
3 years ago
The lines y equals=3x minus−1 and y equals=ax plus+2 are perpendicular if aequals=​_______.
yan [13]
Since perpendicular lines have their slopes as negative reciprocals, the negative reciprocal of the given slope (3) is -1/3. Therefore the a value is -1/3.
3 0
3 years ago
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