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2 years ago

Can i have help with these two problems.

Mathematics

1 answer:

Gelneren [198K]2 years ago

4 0

Answer:

(11/7)x + (3/7)y

Step-by-step explanation:

Perform the indicated multiiplication. We get:

(6/7)x - (2/5)y + (5/7)y + (5/7)x

Now combine like terms, obtaining: (11/7)x + (3/7)y

An alternative expression would be (1/7)(11x + 3y)

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George was reading a mystery story. He read 42 pages in one hour. At this rate how many pages can he read in 40 minutes?

Viefleur [7K]

Answer:

56.8

Step-by-step explanation:

Ratios.

42------60

1----------1.42

40-------56.8

First, divide 42 by 42 which is one. Then, divide 60 by 42, which is 1.42.

Next, multiply 1 by 40. Finally multiply 1.42 by 40 which is 56.8. Hope this helps

5 0

3 years ago

The data set shown below represents the number of times some families went out for dinner the previous week.

dimulka [17.4K]

Answer:

The answer would be the 2nd, 3rd, and 5th option on ed

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Please answer!!

Liula [17]

Answer first three words

Step-by-step explanation:

8 0

2 years ago

A number added to itself is one

Ivenika [448]

The number would be .5 I'm pretty sure

6 0

3 years ago

A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pressure. The following data represent the strengt

ss7ja [257]

Answer:

Mean = 3640

Mode = 4100

Median = 3830.

Step-by-step explanation:

We are given the following data in the question:

Strength of casts (in psi):

3970,4100,3100,3200,2950,3830,4100,4050,3460

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observation}}{\text{Total number of observations}}$

$\displaystyle\frac{3970+4100+3100+ 3200+ 2950+ 3830+4100+ 4050+ 3460}{9} = \displaystyle\frac{32760} {9} = 3640$

Mode is the entry with most frequency. Thus, for the given sample mode = 4100.

Median

Since n = 9 is odd,

Formula:

$Median = \displaystyle\frac{n+1}{2}th~term$

Data in ascending order:

2950,3100,3200,3460,3830,3970,4050,4100,4100

Median = 5th term = 3830.

7 0

3 years ago