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3 years ago

0.750 + 0.375 + 0.625

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

5 0

Answer:

1.75

Step-by-step explanation:

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What is the BEST estimate for the measure of angle c? A) 77 B) 88 C) 99 D) 111

Bad White [126]

Answer:

Step-by-step explanation:

Looks close to a right angle so 88 degrees most likely.

7 0

3 years ago

In a flight of 600 km, the speed of the aircraft was slowed down due to bad weather. The average speed of the trip was decreased

UkoKoshka [18]

The average speed would be 600 km/hr.

Step-by-step explanation:

Let the original speed be 'x'

Let the decreased speed be 'x-200'

Distance = 600 km

Time increased by 30 minutes

According to question, it becomes,

$\dfrac{600}{x-200}-\dfrac{600}{x}=\dfrac{30}{60}\\\\\dfrac{x-(x-200)}{x^2-200x}=\dfrac{1}{2\times 600}\\\\\dfrac{200}{x^2-200x}=\dfrac{1}{1200}\\\\240000=x^2-200x\\\\x^2-200x-240000=0\\\\x=600,-400$

So, The average speed would be 600 km/hr.

5 0

3 years ago

A line passes through the point (8,9) and has a slope of 3/4

stepan [7]

Answer: $y=\frac{3}{4}x+3$

Step-by-step explanation:

Slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept. Since we are given slope, we can plug that into m, and use the given point to find the y-intercept.

$y=\frac{3}{4}x+b$ [plug in (8,9)]

$9=\frac{3}{4}(8)+b$ [multiply]

$9=6+b$ [subtract both sides by 6]

$b=3$

Now that we have b, we can complete the equation to $y=\frac{3}{4}x+3$ .

7 0

3 years ago

How can you determine the relationship between corresponding terms? Give an example.

stellarik [79]

You have to try to determine the sequence, and you try two basic kind of sequences: aritymethic and geometric.

In aritmetic sequeces the relationships is that the difference between any adjacent terms is constant.

For example

´Number of term (n) Term, An

1 7

2 11

3     15

4 19

Then the relationship between adjacent terms is 19 - 15 = 4 = 15 -11 = 4 = 11 - 7 = 4.

You can find, then, a general expression that relates any term with its position.

It is An = 7 + (n-1)*4

In geometric sequences the relationship is found dividing two adjacent terms, because the ratio is constant.

For example:

Number of term   Term

1 10
2    20
3      40
4    80

You can then find the relation as: 20/10 = 2 = 40/20 = 2 = 80/40 = 2.

In this case the general term is An = 10 * 2^ (n-1)

3 0

3 years ago

Help me ans should be well explained

nikdorinn [45]

Step-by-step explanation:

¡)

The lowest rank of the class is unknown to us.

Let's say, it's x.

highest marks =2 × lowest rank + 7

=> 87 = 2x + 7 (this is the equation we gotta solve)

=> 87 - 7 = 2x

=> 2x = 80

=> x = 40

And x is the lowest rank of the class, so we got the required answer.

$\boxed{ \mathfrak{lowest \: rank = \red{40}}}$

¡¡)

it can be 17 since the denominators are in increasing order and 17 only fits in.

I'm looking for any other pattern that can be present here.

7 0

3 years ago

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