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Tems11 [23]
3 years ago
15

An expression is shown below: \sqrt(50)+\sqrt(2) is it irrational or rational

Mathematics
1 answer:
Luba_88 [7]3 years ago
7 0

Answer:

Irrational

Step-by-step explanation:

It's an irrational number since both of them are irrational

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You start driving north for 7 miles, turn right, and drive east for another 24 miles. At the end of driving, what is your straig
horsena [70]

Answer:

AC = 25\ miles

Step-by-step explanation:

Given:

Distance for north side = 7 miles.

Distance for east side = 24 miles.

We need to find the displacement.

Solution:

Figure shows Point A is starting point and AB = 7 miles is North side distance and BC = 24 miles is east side distance and AC is shown as displacement.

Using Pythagoras theorem to find displacement (AC).

(AC)^{2}=(AB)^{2}+(BC)^{2}

Substitute AB = 7 and BC = 24 in above equation.

(AC)^{2}=(7)^{2}+(24)^{2}

(AC)^{2}=49+576

(AC)^{2}=625

AC = \sqrt{625}

AC = 25\ miles

Therefore, displacement of the car AC = 25\ miles

3 0
3 years ago
Find the value of the following (-42) + 15 + (-63) can someone say this and fast
Karolina [17]

\\ \sf\longmapsto (-42)+15+(-63)

\\ \sf\longmapsto -42+15+(-63)

\\ \sf\longmapsto -27+(-63)

\\ \sf\longmapsto -27-63

\\ \sf\longmapsto -90

6 0
3 years ago
Read 2 more answers
Question 10 please :(
Maru [420]
M=9.25-(4.5+3.5)
m=1.25
7 0
3 years ago
Read 2 more answers
PLEASE HELP
lukranit [14]

Answer:

Step-by-step explanation:

l = 34 cm

height = 30 cm

radius = 16 cm

surface area of cone = πr (l +r)

=3.14 *16 (34 + 16)

=50.24*50

=2512 cm^2

volume of a cone = \frac{1}{3}πr^2h

=\frac{1}{3}*3.14*16^2 *30

=1.0466*256*30

=8037.888

=8037.89 cm^3

3 0
3 years ago
A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It
Pachacha [2.7K]

Answer:

We reject the null hypothesis, and accept the alternative hypothesis.

So, it means that the machine is under filling the bags

Step-by-step explanation:

Given

Null Hypothesis

H_0:\mu = 419 --- works correctly at 419g

Alternate Hypothesis

H_0:\mu < 419 --- under fills the bag

n =15 --- the sample

\bar x = 409 --- the mean

\sigma = 22 --- the standard deviation

\alpha = 0.05 --- the significance level

Required

What is the decision rule

Since n is less than 30, we make use of t test

t = \frac{\bar x - \mu}{\sigma/\sqrt n}

t = \frac{409 - 419}{22/\sqrt{15}}

t = \frac{-10}{22/ 3.87}

t = \frac{-10}{5.58}

t = -1.792

Calculate df

df = n-1

df = 15-1

df = 14

Calculate the p value from the Student's t-distribution  at df = 14 and t = -1.792

p =0.047  

Given that: \alpha = 0.05

Since p < \alpha

So, it means that the machine is under filling the bags

6 0
2 years ago
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