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77julia77 [94]
3 years ago
9

Four friends went scuba diving. According to the following statements, who spotted sea life at the fastest rate? Lance saw 2 ree

f sharks in 6 minutes. Jasmine saw 3 sea cucumbers in 8 minutes. Robert saw 4 jellyfish in fifteen minutes. Shilpa saw 3 pencil urchins in ten minutes.
Mathematics
1 answer:
Levart [38]3 years ago
5 0
Jasmine saw the most
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Tavon has a gift card for $165 that loses $4 for each 30-day period it is not used. He has another gift card for $145 that loses
sweet [91]

Answer:

Equation 1 = Equation 2

165 - 4x = 145 - 3.50x

Step-by-step explanation:

Let x represent the number of 30-day periods.

Tavon has a gift card for $165 that loses $4 for each 30-day period it is not used.

Therefore the equation =

$165 -$4 × x

= 165 - 4x.......... Equation 1

He has another gift card for $145 that loses $3.50 for each 30-day period it is not used.

$145 -$3.50 × x

= 145 - 3.50x........... Equation 2

Hence, an equation for the number of 30-day periods until the value of the gift cards will be equal is obtained by equating Equation 1 and Equation 2 together

So, we have

Equation 1 = Equation 2

165 - 4x = 145 - 3.50x

We simplify further:

165 - 145 = -3.50 + 4.0x

20 = 0.5x

x = 20/0.5

x = 40

Therefore, number of each 30-day periods until the value of the gift cards will be equal is 40

3 0
3 years ago
Y=-6x+5 and y=-6x-6 pair of lines is parallel, perpendicular, or neither?
Alex73 [517]

Answer:

parallel

Step-by-step explanation:

They both have the same slope, -6.

The slope is always the number in front of the x.

8 0
3 years ago
10. Mike bought five items for lunch that cost a total of $4.55. Hot dogs cost $1.10 each
Reil [10]

Answer:

alexa i need it 2 did u find the answer

Step-by-step explanation:

hello from 8th period kk12 is so hard lol

4 0
3 years ago
Polygon PQRST is show on the coordinate plane below.8) Given the algebraic representation (x, y) *(x, y), create the image of P'
amm1812

1) We have here a Dilation. The image is going to "shrink" under the scale factor of 1/2

2) Let's look at the graph and find the coordinates of each vertex.

Preimage:

P (-5,3) Q (0,4) R( 4,2) S(2,-3) T( -4,-3)

3) Dilating the figure under a scale factor of 1/2 for each x, and y coordinate.

Then the image is going to :

P' (-5/2, 3/2) Q' (0,2) R' (2,1) S' (1,-3/2) T(-2,-3/2)

9) When a Dilation has the scale factor k=1, there is no dilation actually. Since the polygon remains with the same dimensions.

10) K>1

When the scale factor is above 1 the polygon, or any figure enlarges.

11)0The Figure shrinks. It can't be zero, for there's no dilation at 0 as a scale factor.

3 0
1 year ago
A certain bacteria culture grows at a rate of 18% everyday. There are currently 420 bacteria. How many bacteria will there be on
spayn [35]

In this question, it is given that

A certain bacteria culture grows at a rate of 18% everyday. There are currently 420 bacteria.

And we have to find number of bacterias on day *.

For that we use the following formula

N(t) =N_{0} (1 +r)^t

N(0)= 420, r = 0.18 , and \ t = 8days

Substituting these values in the formula, we will get

N(8)= 420(1+0.18)^8
\\
N(8)=1579

THerefore on day 8, number of bacterias are 1579.

4 0
3 years ago
Read 2 more answers
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