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slamgirl [31]
3 years ago
11

An artist gets strips of metal from a salvage yard to make decorative wall art. He finds strips that are 2.5 feet and 3.5 feet l

ong. Determine on possible length for the third strip if the artist wants to make a triangle. a Any length between 5ft and 6ft b Any length between 1ft and 6ft c Any length between 0ft and 7ft d Any length between 1ft and 10ft
Mathematics
1 answer:
DerKrebs [107]3 years ago
8 0

Answer:

b Any length between 1ft and 6ft

Step-by-step explanation:

I am only 80% shure sorry

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A researcher wished to compare the effect of two stepping heights (low and high) on heart rate in a step-aerobics workout. A col
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Answer:

The answer is "between 0.10 and 0.05".

Step-by-step explanation:

For sample 1:

n_1 = 25\\\\\bar{x_1} = 90.00\\\\ s_1 = 9\\\\

For sample 2:

n_2 = 25\\\\ \bar{x_2} = 95.08\\\\ S_2 = 12\\\\

Calculating the null and alternative hypotheses:

H_O : \mu_1 = \mu_2 \\\\ H_Q : \mu_1  

Calculating the test statistic:

Z= \frac{90-95.08}{ \sqrt{\frac{9^2}{25}+\frac{12^2}{25}}} \\\\ =\frac{-5.08}{ \sqrt{\frac{81}{25}+\frac{144}{25}}}\\\\=\frac{-5.08}{ \sqrt{\frac{81+144}{25}}}\\\\=\frac{-5.08}{ \sqrt{\frac{225}{25}}}\\\\=\frac{-5.08}{ \frac{15}{5}}\\\\=\frac{-5.08}{3}\\\\= -1.693

Calculating the conservative degrees of freedom:

DF = min (n_1 -1, n_2 - 1) = min(25-1, 25-1) = 24

by using Excel the p-value for left tailed test and for test statistic will be -1.693 with DF = 24.

\to p-value = TDIST(1.693, 24, 1) = 0.0517\ \ \ \  i.e, \bold{0.05 < p-value < 0.10}

5 0
3 years ago
A car factory produces 100 cars in a day. If c is the total number of cars produced in d days, which equation represents the num
viktelen [127]
We have:
c - the total number of cars,
d - the number of days;
c = f ( d ) = 100 d
Answer: C )
5 0
3 years ago
Read 2 more answers
If tanθ=2.6 then tan (-θ)=
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Hello from MrBillDoesMath!

Answer:

-2.6



Discussion:

Tan(@) is an odd function so

tan([email protected]) =  -tan(@) = - 2.6


Recall tan(@) = sin(@)/cos(@)  and sin is an odd function whereas cos is an even function. Hence their quotient, tan, is an odd function.



Thank you,

MrB

6 0
3 years ago
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Use the vertical method to multiply (4a^3 - 2a + 3a^2 + 1) (4a3−2a+3a2+1) and (3 - 2a + a^2). (3−2a+a2). What would be the value
SVETLANKA909090 [29]
CLOSSAL TITAN OF 3a-/a=3a
8 0
3 years ago
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For term k(a), what are some values of a that make sense to use? What are some values of a that don't make sense to use? Explain
luda_lava [24]

The values of a which make sense to use as described in the task content include the set of 0 and all real numbers greater than zero, while the values of a that don't make sense to use includes the set of real numbers less than zero.

<h3>What are some values which make sense to uses in the evaluation of k(a) and what are some that don't?</h3>

It follows from the task content that the set of values of a which are required to be identified represents the domain of the function k(a) which is evidently, an exponential function.

Consequently, only positive real numbers can be used as the value of a.

Read more on exponential functions;

brainly.com/question/12940982

#SPJ1

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2 years ago
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