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3 years ago

11

GIVING BRAINLIEST!!! PLEASE HELP ME OR BINGUS WILL BE ANGY!!! IM TRYING TO FINISH A TEST AND I HAVE 3 QUESTIONS LEFT! 20 MINS LE

FT PLEASE HELP!!!! I NEED ALL IN ONE QUESTION!

2 answers:

daser333 [38]3 years ago

6 0

Answer:

25.5 72 144

Step-by-step explanation:

mm just wanted that dude to get brainliest lol

Darina [25.2K]3 years ago

3 0

Answer:

25.5 72 144

Step-by-step explanation:

done

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What is the simplified expression for 4 power 4 multiplied by 4 power 3 over 4 power 5

MaRussiya [10]

4^4 * 4^3
------------
4^5

= 4^7 / 4^5

= 4^(7-5)

= 4^2 = 16 Answer

5 0

3 years ago

Milk is a good source of many vitamins that can help us stay healthy. FDA recommends that the average vitamin A concentration fo

Lelechka [254]

Answer:

The degrees of freedom for this sample are 27.

The sample size to get a margin of error equal or less than 0.3656 is n=4450.

Step-by-step explanation:

The degrees of freedom for calculating the value of t are:

$df=n-1=28-1=27$

With 27 degrees of freedom and 95% confidence level, from a table we can get that the t-value is t=2.052.

The sample size to get a margin of error equal or less than 0.3656 can be calculated as:

$MOE=t\cdot s/\sqrt{n}\\\\n=\left(\dfrac{t\cdot s}{MOE}\right)^2=\left(\dfrac{2.052\cdot 11.8841}{0.3656}\right)^2=66.7^2\\\\\\n=4449.13\approx4450$

6 0

3 years ago

Chris has $120 to spend at the bookstore. Chris buys a hardcover book for $36, as well as some gift cards for his family and fri

Wittaler [7]

Answer:

120-36=84

84/15=5 with $9 left

120=36-15x

6 0

3 years ago

Help pleaseee? i will give you brainliest answer

Leokris [45]

All i know is that both of them are parallel

i think for the first one its 6

hope this helps

7 0

3 years ago

A quadratic equation is shown below:

lys-0071 [83]

16x^2 − 8x + 1 = 0

<span>Part A:
</span>b^2 - 4ac for ax^2 + bx + c

16x^2 − 8x + 1 = 0
so in this case,
a = 16, b = -8, c = 1

b^2 - 4ac
=(-8)^2 - (4 * 16* 1)
= 64 - 64
= 0
because it's equal 0, answer is one solution

Part B:

<span>4x^2 − 8x − 45 = 0
</span><span>solve the equation by factoring </span>
= (2x - 9)(2x + 5)

set (2x - 9)(2x + 5) equal to 0 to solve for x
so
(2x - 9)(2x + 5) = 0
2x - 9 = 0
x = 9/2
x = 4.5

2x + 5 = 0
x = -5/2
x = -2.5
answer
x = -2.5 or x = 4.5

Hope it helps

5 0

3 years ago