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3 years ago

Evaluate:

Mathematics

1 answer:

sergey [27]3 years ago

4 0

Answer: 4.4

Step-by-step explanation:

First: Simplify the -7/10 to a decimal. That will be -0.7.

Second: Add -0.7 with 0.15. That gives you -0.55

Third: Divide -0.55 with -0.125 and that gives you 4.4

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-5*(-2)*(-3)+(-32)÷8+10

Alinara [238K]

The answer to that would be 2.25 An easy calculator on your phone can also solve that if you didn’t know :)

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3 years ago

Students in a science class are divided into 6 equal groups with at least 4 students in each group. Identify an inequality that

worty [1.4K]

Yes bc 6 groups and a bout 4 are in it ...........

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4 years ago

a triangle has sides 8cm and 5cm and an angle of 90 degree between them.calculate the smallest angle of the triangle

kakasveta [241]

Answer:

The smallest angle is 32 degrees

Step-by-step explanation:

The given parameters show that the triangle is a right angled triangle;

Let the two other angles be represented by x and y;

Since the angle between side 5 cm and side 8 cm is 90, we can represent any of this sides as the opposite and as the adjacent;

Scenario 1 (Calculating x)

Let opposite = 5 cm

Let adjacent = 8 cm

In trigonometry, The relationship between opposite and adjacent is Tangent;

$Tan\ x = \frac{Opposite}{Adjacent}$

$Tan\ x = \frac{5}{8}$

$Tan\ x = 0.625$

Take arctan of both sides

$x = tan^{-1}0.625$

$x = 32.0053832081$

$x = 32$ (Approximated)

Scenario 2 (Calculating y)

Let opposite = 8 cm

Let adjacent = 5 cm

In trigonometry, The relationship between opposite and adjacent is Tangent;

$Tan\ y = \frac{Opposite}{Adjacent}$

$Tan\ y = \frac{8}{5}$

$Tan\ y = 1.6$

Take arctan of both sides

$y = tan^{-1}1.6$

$y = 57.9946167919$

$y = 58$ (Approximated)

<em>By comparing the angles, the smallest angle is 32 degrees</em>

6 0

3 years ago

What's the distance between 3 1/4 and 6 1/2?

Basile [38]

6 1/2 - 3 1/4 = 13 / 2 - 13 / 4 = 26 / 4 - 13 /4 = 13 / 4 is the distance;

4 0

3 years ago

A factory has four machines that produce the same item. Machines 1 and 2 each produce 20% of the total output, while machines 3

andrezito [222]

Answer:

The answers are a. 0.27 b. 0.2 c. 0.2 d. 0.3 e. 0.3 f. 1

Step-by-step explanation:

Total output = 100% = 1

Total defective = 6% + 5% + 8% + 8% = 27% = 27

a. Prob of defective item = total defective/total output

= 27/100

= 0.27

b. Prob of defective from machine 1 = 6/27 =0.2222

~ 0.2

c. Prob of item defective from machine2 = 5/27 = 0.1852

~0.2

d. Prob of de defective from machine 3 = 8/27 = 0.2963

~0.3

e. Prob of defective from machine 4

= 8/27 = 0.2963

~ 0.3

f. Sum of prob from b-e

0.2 + 0.2 + 0.3 + 0.3

= 1

4 0

4 years ago