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ella [17]
3 years ago
10

Please help I'm so confused pls​

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
4 0
So ur given the equation 1.44x=4.32
So you have to find x and you do this with algebra
X=4.32/1.44
X=3
So Emily bought 3 notebooks
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C÷2 when c=26<br> help me, please
Jobisdone [24]

Answer:

the answer would be 13

Step-by-step explanation:

26/2=13

3 0
3 years ago
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In 2011, a U.S. Census report determined that 71% of college students work. A researcher thinks this percentage has changed sinc
coldgirl [10]

Answer:

Note: The full question is attached as picture below

a) Hо : p = 0.71

Ha : p ≠ 0.71

<em>p </em>= x / n

<em>p </em>= 91/110

<em>p </em>= 0.83.

1 - Pо = 1 - 0.71 = 0.29.

b) Test statistic = z

= <em>p </em>- Pо / [√Pо * (1 - Pо ) / n]

= 0.83 - 0.71 / [√(0.71 * 0.29) / 110]

= 0.12 / 0.043265

= 2.77360453

Test statistic = 2.77

c) P-value

P(z > 2.77) = 2 * [1 - P(z < 2.77)] = 2 * 0.0028

P-value = 0.0056

∝ = 0.01

P-value < ∝

Reject the null hypothesis.  There is sufficient evidence to support the researchers claim at the 1% significance level.

6 0
3 years ago
Let g(x)=2x and h(x)=x^2+4 find the value. (hog)(a)
lisov135 [29]
In short, (h o g)(a) is just h(    g(a)    ).

so what we can do is simply get g(a) first and then plug that in h(x).

\bf \begin{cases}&#10;g(x)&=2x\\&#10;h(x)&=x^2+4\\&#10;(h\circ g)(a)&=h(~~g(a)~~)&#10;\end{cases}&#10;\\\\\\&#10;g(a)=2(a)\implies g(a)=2a&#10;\\\\\\&#10;h(~~g(a)~~)\implies h(~~2a~~)=(2a)^2+4&#10;\\\\\\&#10;h(~~2a~~)=(2^2a^2)+4\implies  h(~~2a~~)=4a^2+4
8 0
4 years ago
Luna Park in Coney Island charges $12 for entry and $2 per ride. Ariana visits the park and goes on 4 rides. How much money did
Debora [2.8K]
Y = 2x + 12
2(4) + 12 = 8 + 12 = 20
She spends $20
5 0
3 years ago
The student in Mrs.Willows class are all reading the same novel. Four students create a graph of their reading rates, in words p
brilliants [131]

Answer:

Mason

Step-by-step explanation:

It is simply a matter of which line is steepest. Charlie's graph is the steepest but the units the students plotted by are not the same. So on Mason's graph, if u plot a point high on the line u see he reads the most words in the least time.

Hope this helps,

plx give brainliest

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