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3 years ago

What is the distance between (-6,4) and (-6,-7)

Mathematics

1 answer:

11Alexandr11 [23.1K]3 years ago

3 0

Pretty sure the distance between them is 11 correct me if I’m wrong

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A kite is flying at a height of 20 m vertically above the ground. Just below it, a fish is underwater at a

Ainat [17]

Answer:t a particular point it is exactly above the fish moving in a pond 3m below the ground level. Find the vertical distance between these two points.? is done on EduRev Study Group by Class 7 Students. The Questions and Answers of A kite is flying at a height of 10m above the ground level. At a particular point it is exactly above the fish moving in a pond 3m below the ground level.

Step-by-step explanation:

7 0

3 years ago

the sum of the first 20 terms of an A.P is identical to the sum of the first 22 term.If the common difference is -2; find the fi

Goryan [66]

Answer:

First term a = 41

Step-by-step explanation:

Arithmetic Progression:

Common differences d = -2

$S_{n}=\frac{n}{2}(2a+[n-1]d)\\\\S_{20}=\frac{20}{2}(2a+19*[-2])\\\\$

= 10*(2a - 38)

= 10*2a - 10*38

=20a - 380

$S_{22}=\frac{22}{2}(2a+21*[-2])\\\\$

= 11 (2a -42)

=11*2a - 11*42

= 22a - 462

$S_{22}=S_{20}\\\\$

22a - 462 = 20a - 380

22a = 20a - 380 + 462

22a = 20a + 82

22a - 20a = 82

2a = 82

a = 82/2

a = 41

First term a = 41

7 0

3 years ago

how many liters of glycerin should be added to 12 Liters of an 8% glycerin solution so that the resulting solution contains 16%

mojhsa [17]

Answer:

1.14 liters

Step-by-step explanation:

We have 8% glycerin solution and we need to make it 16% glycerin solution [more concentration].

When we add "x" liters, we add glycerin as well as changes the total. in 12 Liters, there is 12 * 0.08 = 0.96Liters of glycerin. How much we need to add to this??

Note, 16% = 0.16

We can write a Ratio as shown below, cross multiply and solve for x:

$\frac{0.96+x}{12+x}=0.16\\(12+x)(0.16)=0.96+x\\1.92+0.16x=0.96+x\\1.92-0.96=x-0.16x\\0.96=0.84x\\x=1.14$

We need to add around 1.14 liters

4 0

3 years ago

Read 2 more answers

A ball is thrown off the roof of the school. Its path can be described by the equation: h(t) = -2t^2 + 8t + 10, where h is heigh

zimovet [89]

Answer:

10 meters

Step-by-step explanation:

The given function $h(t)=-2t^2+8t+10$ represents the height, $h$ , in meters, $t$ seconds after the ball is thrown.

Since the ball is thrown off the roof, then ball's height will be equal to the roof's height before being thrown (0 seconds). Therefore, substitute $t=0$ into the given function $h(t)=-2t^2+8t+10$ :

$h(0)=-2(0^2)+8(0)+10,\\h(0)=0+0+10,\\h(0)=\boxed{10\text{ meters}}$

Therefore, the building is 10 meters tall.

8 0

3 years ago

Choose all that are correct.

NeTakaya

Answer:

Step-by-step explanation:

7 0

3 years ago