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2 years ago

What does it mean when a greater than sign is underlined?

1 answer:

3 0

When a sign has the underline, it means it is also equal to.
for example,
x $\geq$ 10
so the solution for "x" is greater than or equal to 10

hope this helps!

You might be interested in

Which statements about the graph of the function f(x) = -x - 4x + 2 are true? Select three options.

stich3 [128]

Answer:

The option "The function has a positive y-intercept" is true because f(0) = 2, which is the y-intercept.

Step-by-step explanation:

5 0

2 years ago

Suppose that scores on the mathematics part of a test for eighth-grade students follow a Normal distribution with standard devia

riadik2000 [5.3K]

Answer:

We need an SRS of scores of at least 153.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How large an SRS of scores must you choose?

This is at least n, in which n is found when $M = 20, \sigma = 150$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$20 = 1.645*\frac{150}{\sqrt{n}}$

$20\sqrt{n} = 1.645*150$

$\sqrt{n} = \frac{1.645*150}{20}$

$\sqrt{n} = 12.3375$

$(\sqrt{n})^{2} = (12.3375)^{2}$

$n = 152.2$

Rounding to the next whole number, 153

We need an SRS of scores of at least 153.

8 0

2 years ago

{x + 3y =- 5<br> {9x + 3y = 3

LiRa [457]

Answer:

1. y-intercept(s):

(0,−53)

x-intercept(s):

(−5,0)

2. x-intercept(s):

(13,0)

y-intercept(s):

(0,1)

Step-by-step explanation:

7 0

2 years ago

A copper key is placed in a cylindrical container with a 3-cm diameter. The water level rises from 14 cm to 14.6 cm. What is the

Tomtit [17]

Answer:

The volume is about 4.24 cm^3.

Step-by-step explanation:

From the question we are told that:

Diameter $d= 3-cm$

Radius $r=d/2=>1.5cm$

Height risen $14.6-14=0.6cm$

Generally the equation for Volume of a Key is mathematically given by

Since Volume of a cylinder is Given as

$V=\pir^2h$

Therefore

$V=\pi*1.5^2*0.6$

$V=4.2417\\\\V=4.24 cm^3$

Correct Option A

The volume is about 4.24 cm^3.

3 0

2 years ago

Find the missing term in the geometric sequence. 180,___,5

Elan Coil [88]

Answer:

30.

Step-by-step explanation:

first term = a

3r term = ar^2

So here ar^2/ a = r^2

r^2 = 5/180 = 1/36

r = 1/6

So missing term = 180 * 1/6 = 30.

7 0

2 years ago