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3 years ago

7

On a coordinate plane, a parabola opens up. It goes through (negative 6, 0), has a vertex at (negative 4, negative 4), and goes

through (negative 2, 0).
The graph of the function f(x) = (x + 6)(x + 2) is shown. Which

1 answer:

BigorU [14]3 years ago

6 0

Answer:

Which?

Step-by-step explanation:

need a little more info

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A total of 333 tickets were sold for the school play. they were either adult tickets or student tickets. the number of student t

andrew11 [14]

222 student tickets
111 adult tickets
That checks out...
2x + x = 333
3x=333
x=111

7 0

2 years ago

Law of sines: How many distinct triangles can be formed for which m∠A = 75°, a = 2, and b = 3?

butalik [34]

According to the law of sines:

$\frac{a}{sin(A)} = \frac{b}{sin(B)}$

Using the given values, we can find the angle B and find the number of possible triangles that can be formed.

$\frac{2}{sin(75)}= \frac{3}{sin(B)} \\ \\ 
sin(B)=3* \frac{sin75}{2} \\ \\ 
sin(B)=1.45 \\ \\ 
B=sin^{-1} (1.45)$

The range of sin is from -1 to 1. The above expression does not yield any possible value of B, as sin of no angle can be equal to 1.45.

Therefore, we can conclude that no triangle exists with the given conditions.

5 0

3 years ago

A milloniare estimates her wealth to be $2.2×10 to the nearst million dollars.what are the lower and upper bounds for the millio

Andrews [41]

Answer:

2.2 x10= = 22.2 =22 million.

Step-by-step explanation:

3 0

3 years ago

HELP RN RN RN RN PLEASE ASAP

lapo4ka [179]

I think the answer is A) stratified random sampling! Stratified random sampling is when sunsets of individuals are created based on similar criteria, which sounds the closest to the problem because stratified can split a group and does not have to be fully equal.
Non random sampling doesn’t fit because it’s clearly stated that it’s random.
Systematic random sampling is based on intervals in a group.
The next closest answer would be simple random, which is when a subset of individuals are chosen from a larger group with all having the same probability.

3 0

2 years ago

At Burnt Mesa Pueblo, archaeological studies have used the method of tree-ring dating in an effort to determine when prehistoric

Zanzabum

Answer:

a) (1215, 1297)

b) (1174, 1338)

c) (1133, 1379)

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 1256

Standard Deviation, σ = 41

Empirical Rule:

Also known as 68-95-99.7 rule.
It states that almost all the data lies within three standard deviation for a normal data.
About 68% of data lies within 1 standard deviation of mean.
About 95% of data lies within two standard deviation of mean.
About 99.7% of data lies within 3 standard deviation of mean.

a) range of years centered about the mean in which about 68% of the data lies

$\mu \pm 1(\sigma)\\=1256 \pm 41\\=(1215, 1297)$

68% of data will be found between 1215 years and 1297 years.

b) range of years centered about the mean in which about 95% of the data lies

$\mu \pm 2(\sigma)\\=1256 \pm 2(41)\\=1256 \pm 82\\=(1174, 1338)$

95% of data will be found between 1174 years and 1338 years.

c) range of years centered about the mean in which about all of the data lies

$\mu \pm 3(\sigma)\\=1256 \pm 3(41)\\=1256 \pm 123\\=(1133, 1379)$

All of data will be found between 1133 years and 1379 years.

3 0

3 years ago