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eimsori [14]
2 years ago
11

What is the value of the expression below? 7 divided by 2 minus 4.5 x times 3 + 8

Mathematics
2 answers:
Vesnalui [34]2 years ago
7 0

Answer:

the answer is 5

Step-by-step explanation:

7 \div 3 = 3.5

3.5 - 4.5 =  - 1

- 1 \times 3 =  - 3

- 3 + 8 = 5

melomori [17]2 years ago
7 0

Answer:

The answer is 5

Step-by-step explanation:

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Please help I need to finish my homework
valina [46]

Answer:

AB= 0.625 units (3 s.f.)

∠BAC= 52.9° (1 d.p.)

∠ABC= 32.1° (1 d.p.)

Step-by-step explanation:

Please see the attached pictures for full solution.

- Find AB using cosine rule

- find ∠BAC using sine rule

- find ∠ABC using angle sum of triangle property

4 0
3 years ago
HELP WITH THIS QUESTION PLEASE AND THANK YOUU!!!
lana66690 [7]

Answer:

s = 35pi units

We can either leave it with pi in the answer or approximate

s= 109.9557429 units

Step-by-step explanation:

Arc length is found by

s = r * theta where r is the radius and theta is given in radians

Changing the angle from 150 degrees to radians by multiplying by pi/180

150 *pi/180 = 5/6 pi

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s= 109.9557429 units

3 0
3 years ago
Find the product of 50×28
barxatty [35]
50 times 28, you will get 1400.

If trying to mental calculate, I would :
28=20+8
50 times 20 = 1000
50 times 8 = 400
Then add them up to 1400.
8 0
3 years ago
Please help this is worth a lot of my grade:(
Ede4ka [16]

Answer:

Step-by-step explanation:

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5 0
2 years ago
The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. She would now like to det
seraphim [82]

Answer:

The required hypothesis to test is H_0: \mu\leq 30 and H_1: \mu>30.

Step-by-step explanation:

Consider the provided information.

It is given that the nightclub has recently surveyed a random sample of n = 250 customers of the club.

She would now like to determine whether or not the mean age of her customers is over 30.

Null hypotheses is represents as H_0. Thus the null hypotheses is shown as:

H_0: \mu\leq 30

The alternative hypotheses is represents as H_1. Thus the alternative hypotheses is shown as:

H_1: \mu>30

Hence, the required hypothesis to test is H_0: \mu\leq 30 and H_1: \mu>30.

8 0
3 years ago
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