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IgorC [24]
3 years ago
7

At Sara's new job she spent $11.52, $6.48, $5.99, $14.00, and $9.50 on lunch the first week. In the second week, she spent $4 mo

re in total for the 5 lunches than the first week. What is the increase in the mean for the second week compared to the first? Round the answer to the nearest penny. Enter your answer in the box. $
Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
5 0

Answer:

0.80

Step-by-step explanation:

elena55 [62]3 years ago
4 0
The total amount that Sara spent for her meals during the first week is,
                          $11.52 + $6.48 + $5.99 + $14.00 + $9.50 = $47.49
With an average of $9.498

During the second week, she spent $4 more making her total equal to $51.49. The average is equal to $10.298. The increase in the mean is equal to,
                         increase in mean  = $10.298 - $9.498 = $0.8<span>Comments</span>
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Step-by-step explanation:

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2 years ago
10 + (2 x 3)2 ÷ 4 × 1 over 2 to the power of 3
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Answer:

1.4375

Step-by-step explanation:

\frac{10 + (2 x 3)^{2} / (4)(1)}{2^{3}} \\

\frac{10 + (6)^{2} /4}{8} \\

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7 0
2 years ago
Solve using any method. −2x+y=3 −3x+y=1 (-1, -2) (2, 7) (-2, -1) (-2, -5)
damaskus [11]

Answer:

Therefore the Final Solution is  x = 2 and y = 7  

i.e (2 ,7)

Step-by-step explanation:

Given:

-2x+y=3                ...............Equation ( 1 )

-3x+y=1                 ...............Equation ( 2 )

y=3x+1                   ..............Equation ( 3 )

To Find:

x = ?

y = ?

Solution:

Substituting Equation  ( 3 ) in Equation ( 1) we get

-2x+3x+1=3\\\\x=3-1\\\\\therefore x =2

Now Substituting x = 2 in Equation ( 3 ) we get

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Therefore the Final Solution is  x = 2 and y = 7  

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3 0
3 years ago
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strojnjashka [21]

Answer:

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Step-by-step explanation:

see the picture for how I worked this out

8 0
2 years ago
Which of the following statements is true?
sdas [7]

Answer:

Option The product of (-x+4)(x^2+3x-3) is

-x^3+x^2+15x-12 is correct.

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Step-by-step explanation:

Given expression is (-x+4)(x^2+3x-3)

To find the product of the given expression :

(-x+4)(x^2+3x-3)

( By using the distributive property each term in the factor is multiplied by each term in the another factor )

=[-x(x^2)+(-x)(3x)+(-x)(-3)]+[4(x^2)+4(3x)+4(-3)]

=-x^3-3x^2+3x+4x^2+12x-12 ( adding the like terms )

=-x^3+x^2+15x-12

Therefore (-x+4)(x^2+3x-3)=-x^3+x^2+15x-12

Therefore Option The product of

(-x+4)(x^2+3x-3) is -x^3+x^2+15x-12 is correct.

That is (-x+4)(x^2+3x-3)=-x^3+x^2+15x-12

7 0
3 years ago
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