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3 years ago

3. Noah plays video games 7/8 of an hour each day. How many

Mathematics

2 answers:

julia-pushkina [17]3 years ago

7 0

A weeks consists of 7 days, so we have to multiply the daily rate by 7:

$\dfrac{7}{8}\cdot 7 = \dfrac{49}{8}=6.125$

7nadin3 [17]3 years ago

3 0

1 hour = 60 mins
7/8(60) = 52.5 minutes per day
In a week: 52.5(7) = 367.5 mins
367.5/60 = 6 1/8
Therefore, he watches tv for 6 1/8 hours

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Kelly goes to the store and buys 9 boxes of cookies. The cost of each box is represented with the letter c. Which expression cou

MatroZZZ [7]

Answer:

9c because you don't know how much money Kelly actually spent so instead of doing 9 x the price of each box, you replace it with c, so it's 9c

Step-by-step explanation:

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3 years ago

sam can prepare 20 wall paintings in four weeks how much time will he need to prepare 80 wall paintings

FinnZ [79.3K]

Answer:16 weeks

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3 years ago

Read 2 more answers

Choose the correct answer. Your business signs a ninety-day promissory note for

Mila [183]

90 days=3 months
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3 years ago

3x+4y-3z=4;5x-y+2z=3;x+2y-z=-2 Solving Systems in three variables

Harlamova29_29 [7]

Answer: x = 3, y = 1, z = 2

Step-by-step explanation:

EQ 1: x - y - z = 0

EQ 3: -x + 2y + z = 1

y = 1

EQ 2: 2x - 3y + 2z = 7 → 1(2x - 3y + 2z = 7) → 2x - 3y + 2z = 7

EQ 3: -x + 2y + z = 1 → -2( -x + 2y + z = 1) → -2x + 4y + 2z = 2

y + 4z = 9

y = 1 ⇒ 1 + 4z = 9

4z = 8

z = 2

Input y = 1 and z = 2 into one of the equations to solve for x:

EQ 1: x - y - z = 0

x - (1) - (2) = 0

x - 3 = 0

x = 3

Check:

EQ 2: 2x - 3y + 2z = 7

2(3) - 3(1) + 2(2) = 7

6 - 3 + 4 = 7

3 + 4 = 7

7 = 7 $\checkmark$

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3 years ago

which of the following statements accurately describes a result of a decreasing worker per beneficiary ratio in the Social Secur

hodyreva [135]

Answer: C

Step-by-step explanation:

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3 years ago