4 years ago

What is the equation with the difference of 54.57

Mathematics

1 answer:

rusak2 [61]4 years ago

3 0

Is this the whole question?

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You were given a Starbucks gift card for your birthday. One day, you used the gift card to order 3 drinks that cost $5.20 each.

murzikaleks [220]

Answer:

The card had 41.60 originally

Step-by-step explanation:

3 x 5.20 = 15.60

15.60 + 26.00 = 41.60

unless there is tax

7 0

3 years ago

Can someone help Pleasaseee

Tom [10]

Answer:

i think it's 1.8.

Step-by-step explanation:

why? bc if u add 6/20 + 1.5 = 1.8

i think it's 1.8, im not sure, hopefully it's correct!!

3 0

2 years ago

Read 2 more answers

Applying the Segment Addition Postulate

blsea [12.9K]

Answer:

144

Step-by-step explanation:

Find: Length of segment BC

CD+DB=BC

3x+8+4x+10=BC

7x+18=BC

BC also equals 8x (given on the screen shot)

7x+18= 8x

x=18

18 times 8 = 144

Check:

3( 18) + 8 + 4(18) + 10

54+8 + 72+10

64+ 80= 144 TRUE

7 0

3 years ago

What are the coordinates of Image A (-2,7) after a dilation with a center at the origin and a scale factor of 3?

mr_godi [17]

Answer:

Step-by-step explanation:

7 0

4 years ago

We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of

sergiy2304 [10]

Answer:

Margin of error = 0.773

Step-by-step explanation:

We are given the following information in the question.

Sample size, n = 20

Sample mean = 8

Sample standard deviation = 2

90% Confidence interval

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.10} = \pm 1.729$

Margin of error:

$t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$1.729(\frac{2}{\sqrt{20}} ) = 0.773$

7 0

4 years ago