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12345 [234]
3 years ago
7

Simplify and answer step by step​

Mathematics
1 answer:
bazaltina [42]3 years ago
8 0

See attachment for math work. I did number 3 only.

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Please help its very desperate and if i could get someone to help me on this whole assignment it would be awesome
Serhud [2]

Answer:

-13/20

Step-by-step explanation:

-0.65=-65/100

=13/20

5 0
2 years ago
A statue casts a shadow that is 45 feet
exis [7]
It’s not my answer but I think it’s correct!

6 0
3 years ago
A person has to walk 100 m to go from position X in the north of east direction to the position B and then to the west of Y to r
aleksandrvk [35]

Answer:

The distance between X and Y is 68m

Step-by-step explanation:

Consider the diagram attached:

A person starts from X, goes to Y, and then finally goes to Z, covering a total of 100m, where Z is located 60m in north of X.

We have to find distance XY.

Let the distance XY be x

Total distance covered by the person = XY + YZ

We know that total distance covered is 100m, so

100m = x + YZ

YZ = (100 - x)m

See the diagram, XZY forms a right angled triangle such that:

Hypotenuse = XY = x

Base = XZ = 60m

Perpendicular = YZ = (100-x)m

Using Pythagoras theorem

Hypotenuse² = Base² + Perpendicular²

x² = (60)² + (100-x)²

Solve the equation for x, we get:

x = 68m

6 0
3 years ago
In the distance, an airplane is taking off. As it ascends during take-Off, slanted line that cuts through the rainbow at two poi
svlad2 [7]

Answer:

1

Step-by-step explanation:

8 0
3 years ago
The mean incubation time of fertilized eggs is 23 days. Suppose the incubation times are approximately normally distributed with
Anna007 [38]

Answer: the incubation time that separates the bottom 2.5​% from the rest of the incubation times is 24.96 days.

Step-by-step explanation:

Suppose the incubation times are approximately normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = incubation times.

µ = mean time

σ = standard deviation

From the information given,

µ = 23 days

σ = 1 day

The probability value for the incubation time that separates the bottom 2.5​% from the rest of the incubation times would be (1 - 2.5/100) = (1 - 0.025) = 0.975

Looking at the normal distribution table, the z score corresponding to the probability value is 1.96

Therefore,

1.96 = (x - 23)/1

x = 1.96 + 23

x = 24.96

3 0
3 years ago
Read 2 more answers
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