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lara [203]
3 years ago
7

How to do this? please help

Mathematics
1 answer:
omeli [17]3 years ago
5 0
I can’t see the photo
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Is 7/10 more than 1/2
Bingel [31]
7/10 is bigger because it is more than half
5 0
3 years ago
If the points at (-4, 3) and (2, 3) are reflected over the x-axis to create two new points, what shape can be formed by the four
Svetllana [295]

Answer:

Step-by-step explanation:

Let (a,b)\in \mathbb{R}^{2}, a reflection over the x-axis consists in the following operation:

(a,b) \rightarrow (a,-b)

If we know that X = (-4,3) and Y = (2, 3), then the points translated over the x-axis are X' = (-4, -3) and Y' = (2,-3), respectively. The most precise description of the shape is a rectangle for the following facts:

1) XX' = YY' = 8 and XY = X'Y' = 6.

2) X and X' have the same x-component.

3) Y and Y' have the same x-component.

4) X and Y have the same y-component.

5) X' and Y' have the same y-component.

A representation of the shape is included below as attachment.

3 0
3 years ago
In a certain town, the wind speed, x, in km/h on a certain day is described by two statements: If 2 times the wind speed is incr
hodyreva [135]
<span>1) if 2 times the wind speed is increased by 2, the wind speed is still less than 46 km/h.

=> 2x + 2 < 46

2) Twice the wind speed minus 27 is greater than 11 km/h.

=> 2x - 27 > 11

Part A: Create a compound inequality to represent the wind speed range. (3 points)


from 2x + 2 < 46

=> 2x < 44

=> x < 22

from 2x - 27 > 11

=> 2x > 11 + 27

=> 2x > 38

=> x > 19

The set of inequalities is

2x + 2 <46
2x - 27 > 11

The solution is x < 22 and x > 19, which is:

19 < x < 22 <----- answer

Part B: Can the wind speed in this town be 20 km/h? Justify your answer by solving the inequalities in Part A. (3 points)

Yes, the wind speed can be 20 km/h, because the solution of the inequality is the range (19,22).

Part C: The average wind speed in another town is 23 km/h, but the actual wind speed is within 4 km/h of the average. Write and solve an inequality to find the range of wind speed in this town.

x ≥ 23 - 4 => x ≥ 19

x ≤ 23 + 4=> x ≤ 27

=> 19 ≤ x ≤ 27

=> [19,27]
</span>
4 0
3 years ago
-7 - x = 3<br><img src="https://tex.z-dn.net/?f=%20-%207%20-%20x%20%3D%208" id="TexFormula1" title=" - 7 - x = 8" alt=" - 7 - x
yaroslaw [1]
-7-x= 3 \\  \\ -x= 3+7\quad \to -x= 10\to  \boxed{x=10}  \\  \\  \\ -7-x= 8 \\  \\ -x= 8+7\quad -x= 15\to  \boxed{x= -15}
4 0
3 years ago
True or false?, If I earn 60% more than you,then you must earn 37.5% less than me
neonofarm [45]

Answer:

True

Step-by-step explanation:

We have two salaries:

My salary is A

Your salary is B

If I earn 60% more than you

This means that

A = (1 + 0.6)B = 1.6B

You must earn 37.5% less than me

The ratio between your salary and mine is:

r = \frac{B}{1.6B} = 0.625

Your salary is 62.5% of mine. So you earn 100-62.5 = 37.5%. So this is true.

7 0
3 years ago
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