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larisa [96]
3 years ago
13

4x - 4y = -2 -9x - 4y = -3

Mathematics
1 answer:
liubo4ka [24]3 years ago
7 0

Answer:

x=1/13 y=15/26

Step-by-step explanation:

hope this helps!

please mark me brainliest! thanks!

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The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. Th
Mila [183]

Answer:

The calculated t-value is t=0.47.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. The sample mean for those trained in mindfulness equals 74; the SS = 150. What is the calculated t-value? Round your answer to two decimal places."</em>

The degrees of freedom are (n-1)=(16-1)=15

The standard deviation is:

s=\sqrt{\frac{SS}{n-1}}=\sqrt{\frac{150}{16-1}}=\sqrt{10}=3.16

The t-value can be calculated as:

t=\frac{M-\mu}{\sigma/\sqrt{n}} =\frac{74-68}{3.16/\sqrt{16}} \\\\t=\frac{6}{3.16*4}=\frac{6}{12.64}= 0.47

4 0
3 years ago
The equations 3(4x) = (4x)3 illustrates which property?
viktelen [127]
The property illustrated is the Commutative Property
8 0
3 years ago
Read 2 more answers
Solve the system of equations - 6x + 8y = –10 and - 4x + y = –11 by<br> combining the equations.
elena55 [62]
Answer: (3, 1) :)

Explanation:
-6x + 8y = -10
-4x + y = -11
-32x + 8y = -88
26x = 78
x = 3
-18 + 8y = -10
8y = 8
y = 1

(Also, can I have brainliest please?)
5 0
3 years ago
Witch of the following is clostest to 6?
r-ruslan [8.4K]
5.99999999999999999 is close to 6
3 0
3 years ago
An online company offers a package that includes 2 games for $11.98 they also offer a package that includes 5 games for $24.95 W
Olenka [21]

Answer:

the package that has five games

Step-by-step explanation:

divide both

4.99

and 5.99 4.99 is btter

6 0
3 years ago
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