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3 years ago

PLEASE ANSWER ASAP !!

Mathematics

2 answers:

sveticcg [70]3 years ago

7 0

I am pretty sure it is 2

matrenka [14]3 years ago

6 0

Answer: I think 2 I am not sure

Step-by-step explanation:

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2,900(0.88)t < 2,000<br><br> what is t

Elodia [21]

T, is equal to 1.28 :)

3 0

4 years ago

(a) Find the value of xif 10, x and 30 are in A.P.

jekas [21]

Part A

<h3>Answer: x = 20</h3>

--------------------------------

Explanation:

AP = arithmetic progression, which is another way of saying arithmetic sequence.

Let d = common difference

first term = 10
second term = first+d = 10+d = x
third term = second+d = x+d = 30

Apply substitution like so

x+d = 30

10+d+d = 30 ... replaced x with 10+d

10+2d = 30

2d = 30-10

2d = 20

d = 20/2

d = 10 is the common difference

Therefore,

x = 10+d = 10+10 = 20

The AP {10,x,30} updates to {10,20,30}. We see the gap between terms is 10 units. All AP's have the same gap width between adjacent terms.

=============================================================

Part B

<h3>Answers: x = 10 and y = 14 </h3>

--------------------------------

Explanation:

We use the same ideas mentioned back in part A.

d = common difference = unknown for now

first term = 6
second term = first+d = 6+d = x
third term = second+d = x+d = (6+d)+d = 6+2d = y
fourth term = third+d = y+d = (6+2d)+d = 6+3d = 18

Hopefully you can see how each term builds up to form the next one. We'll solve that last equation like so

6+3d = 18

3d = 18-6

3d = 12

d = 12/3

d = 4

So we then can say:

x = 6+d = 6+4 = 10
y = 6+2d = 6+2(4) = 6+8 = 14

The arithmetic sequence {6,x,y,18} updates to {6,10,14,18}. There's a gap of 4 between each adjacent term.

6 0

3 years ago

Simplify the expression

Hitman42 [59]

Answer:

r^12 t^12

Step-by-step explanation:

4 0

3 years ago

If f(1) = 7(2 – 1) +8, what is the value of f(1) ?

Alchen [17]

Answer:

Step-by-step explanation:

This was quite easy.

Distribute the 7

f(1)=(14-7)+8

Simplify

f(1)=7+8

f(1)=15

8 0

3 years ago

Read 2 more answers

Emilio throws a marshmallow into the air from his balcony. The height of the marshmallow (in feet) is represented by the equatio

Reika [66]

Answer:

The maximum height of the marshmallow is 49 feet.

Step-by-step explanation:

The vertex form of a parabola is

$y=a(x-h)^2+k$ .... (1)

Where, (h,k) is vertex of the parabola is a is constant.

The given function is

$h=-16(t-14)^2+49$ ..... (2)

Where, h is height of the marshmallow (in feet) and t is the time (in seconds) after he throws the marshmallow.

From equation (1) and (2), we get

$a=-16,h=14,k=49$

The value of a is -16, which is less than 0. So, the given function is a downward parabola.

The vertex of a downward parabola is the point of maxima.

The value of h is 14 and the value of k is 49. So, the vertex of the parabola is (14,49). It means the maximum height of the marshmallow is 49 feet in 14 seconds.

Therefore the maximum height of the marshmallow is 49 feet.

7 0

4 years ago