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zlopas [31]
3 years ago
10

Someone plz help this is due today

Mathematics
1 answer:
-Dominant- [34]3 years ago
3 0

3x+5x+1=17

x=2

y=5•2+1

y=1

(x, y)=(2, 11)

3x+2(4x+5)=43

x=3

y=4•3+5

y=17

(x, y)=(3, 17)

I think I did it right and I hope I helped you

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Claim: Fewer than 94​% of adults have a cell phone. In a reputable poll of 1004 ​adults, 86​% said that they have a cell phone.
meriva

Answer: The value of test statistic = -10.67

Step-by-step explanation:

Test statistic for proportion:

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

, where p= population proportion

n= sample size

\hat{p} = sample proportion

AS per given,

p=0.94, n= 1004, \hat{p}=0.86

z=\dfrac{0.86-0.94}{\sqrt{\dfrac{0.94(1-0.94)}{1004}}}\\\\=\dfrac{-0.08}{\sqrt{\dfrac{0.0564}{1004}}}\\\\=\dfrac{-0.08}{\sqrt{0.0000561752988048}}\\\\=\dfrac{-0.08}{0.00749501826581}\\\\=-10.673756509\approx-10.67

i.e. the value of test statistic = -10.67

8 0
3 years ago
On Monday, Jill used 12 quart of paint in 34 hour. On Tuesday, Jill was distracted by texting and used 12 quart of paint in 54 h
disa [49]

Answer:

monday,12 quart paint=34hour

Tuesday,12quart paint=54 hour

54 hour_34hour=20 hour difference

6 0
3 years ago
F(x)=-1/2x^2+4<br>vertex:<br>min or max:<br>axis of symmetry:<br>y-intercept:<br>domain:<br>range:
lesya692 [45]
"<span>F(x)=-1/2x^2+4           Important:  enclose -1/2 inside parentheses.
vertex:                          For quadratic y=ax^2+bx+c, x value at vertex is -b/2a.
min or max:            Corresponds to vertex x value; must also find y value
axis of symmetry:    Same as x=value of vertex
y-intercept:             Set x=0 and solve for y
domain:           Domain is "all real numbers" when f(x) is a polynomial.
range:"          Here, the graph opens down (because (-1/2) is negative), so the
                      range begins at -infinity and extends up to and including the y-
                       value at the vertex.

</span><span>F(x)= (-1/2)x^2+4

vertex:  Since a = -1/2 and b = 0, x-value at vertex is -b/(2a), or 
        -(0) / (2[-1/2]) = 0.  Graph is symmetric about the y-axis.
         The function is F(x) = (-1/2)x^2 +4.  At x = 0, y=4.
          Thus, the vertex is at (0,4).

maximum occurs at the vertex, and is (0,4).  Max value of function is 4.

axis of symmetry:  see "vertex," above.  x = 0 is that axis.

domain:  since this is a polynomial function, the domain is the set of all real numbers.

range:  (-infinity, 4]      This includes y =4 and all smaller y values.

y-intercept:  Set x=0 and find y.  As before, y=4.  y-intercept is (0,4).</span>
4 0
3 years ago
Here is the other one
katen-ka-za [31]
If you are talking about #5 then the mode is 7 because mode is the number that appears the most
8 0
3 years ago
Read 2 more answers
Fir a walk-a-thon a sponsor to give a flat tree of 5$ plus 2$ for every mile m you walk
nikklg [1K]
Not really sure what you’re wanting here. If you need the formula it is 2 times the number of miles + 5 (2n+5)
8 0
3 years ago
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