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3 years ago

the price of a tent decreased by 15% and sold for 76.49: what was the origanal price of the tent in dollars

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

8 0

The original number would be 509.93

AVprozaik [17]3 years ago

8 0

The answer would be 509.93
Hope this helps! :)

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I need help fast thx

andre [41]

T will travel 81 m/s because addin six to 21 gives you 27 so take that times three and you get 81 m/s hope this helps

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3 years ago

Historically, the proportion of students entering a university who finished in 4 years or less was 63%. To test whether this pro

Neporo4naja [7]

Answer:

z(c) = - 1,64

We reject the null hypothesis

Step-by-step explanation:

We need to solve a proportion test ( one tail-test ) left test

Normal distribution

p₀ = 63 %

proportion size p = 51 %

sample size n = 114

At 5% level of significance α = 0,05, and with this value we find in z- table z score of z(c) = 1,64 ( critical value )

Test of proportion:

H₀ Null Hypothesis p = p₀

Hₐ Alternate Hypothesis p < p₀

We now compute z(s) as:

z(s) = ( p - p₀ ) / √ p₀q₀/n

z(s) =( 0,51 - 0,63) / √0,63*0,37/114

z(s) = - 0,12 / 0,045

z(s) = - 2,66

We compare z(s) and z(c)

z(s) < z(c) - 2,66 < -1,64

Therefore as z(s) < z(c) z(s) is in the rejection zone we reject the null hypothesis

5 0

3 years ago

I need help with this

goldenfox [79]

for a triangular prism, its volume will simply be <u>area of its base</u> times its length.

the are of the base for this one is simply any of those triangular bases. Now, let's notice, the right-triangle has a base of 9 and a height o 9, notice the tickmarks, whilst the prism also has a length of 13.

$\bf \stackrel{\textit{area of the triangle}}{\cfrac{1}{2}(9)(9)}~~\cdot~~ \stackrel{\textit{length}}{(13)}\implies 9\cdot 13\implies 117$

5 0

3 years ago

Solve for x in the diagram

Aliun [14]

Answer:

x=12

Step-by-step explanation:

The two angles shown are complementary angles, so the add to 90 degrees

x+42 + 3x = 90

Combine like terms

4x+42 = 90

Subtract 42 from each side

4x+42-42 = 90-42

4x = 48

Divide by 4

4x/4 = 48/4

x = 12

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3 years ago

Which of the following is a true statement?

labwork [276]

First to Answer:

6/7 > 5/8 is a true statement.

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2 years ago