Answer:
1050 toothbrushes and 1000 floss.
Step-by-step explanation:
15x70=1050
20x50=1000
Hope it helps!
Convert what is inside the parenthesis to sixths.
(3/6+2/6-1/6)^3+2/3x4/5
(4/6)^3+2/3x4/5
(2/3)^3+12/15
8/27+12/15
(8x12/27x15)
96/405
32/135
Don't know if that's right though
Answer:
20-foot flag
Step-by-step explanation:
12-foot flag casts 4.8-foot shadow,
which also means that:
4.8-foot shadow is casted by a 12-foot flag
Lets start by find the length of the flag that will cast a 1-foot shadow.
4.8-foot shadow -----> 12-foot flag
1-foot shadow -----> 12 ÷ 4.8 = 2.5-foot flag
Now we can find the flag that will cast a 8-foot shadow.
1-foot shadow -----> 2.5-foot flag
8-foot shadow -----> 8 x 2.5-foot = 20-foot flag
Answer:
90% is the answer for confidence interval
Step-by-step explanation:
Given that a field test for a new exam was given.75±0.05(75)
i.e. margin of error =0.05(75)=
The population under study was the seniors. Sample mean and std dev were calculated
Stated that the exam creator ased on the results, that on the same exam, 9 out of 10 seniors will have an average score within 5% of 75%
This implies that 9 out of 10 means in percent 90%
Hence the confidence interval is 90%
SInce 5% of 75 is given the range is 75±(75)
Margin of error =3.75
Confidence interval =(75±3.75)
=(71.25,78.75)
We can interpret this we are 90% confident that as sample sizes increase, and samples are drawn at random the average grades of seniors would lie between 71.25 and 78.75
Using the slope intercept formula, the equation for the line in slope intercept form is y = -x - 4
<h3>Slope intercept equation</h3>
The slope intercept equation can be describe as follows:
y = mx + b
where
Therefore,
(-4, 0)(1, -5)
m = -5 - 0 / 1 + 4 = -5 / 5 = -1
Therefore, let's find b using (1, -5)
-5 = -1(1) + b
-5 = -1 + b
b = -5 + 1
b = -4
Therefore, the equation is y = -x - 4
learn more on slope intercept equation here: brainly.com/question/21010520
