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vredina [299]
4 years ago
9

Which statement describes a unit cube?

Mathematics
1 answer:
emmainna [20.7K]4 years ago
3 0

Answer:

C - a cube that is 1 centimeter long, 1 foot wide, and I yard high.

You might be interested in
Use distributive property to write in expanded form 3(6+7)=
Kisachek [45]

Expanded form of 3( 6 + 7) is 3 \times 10+9 \times 1

<h3><u>Solution:</u></h3>

Need to use distributive property to write the expanded form of 3(6 + 7)

Let’s understand what is distributive property.

The distributive property states that multiplying a sum by a number gives the same result as multiplying each addend by the number and then adding the products together.

According to distributive property, for numbers a , b and c

a(b+c)=a \times b+b \times c  ----- eqn 1

3(6 + 7) can be rewritten as 3 ( 6 + 4 + 3 ) = 3 ( 10 + 3 )

Now in our case a = 3 , b = 10 and  c = 3  

On substituting the values of a , b and c in equation 1 we get

3(10+3)=3 \times 10+3 \times 3=3 \times 10+9 \times 1

So expanded form of 3( 6 + 7) is 3 \times 10+9 \times 1

7 0
4 years ago
Alees and Emma design an office park in 28 weeks. Each architect spends 19 hours each week on this project. What is the total nu
olchik [2.2K]

Alees and Emma spend 1064 hours together

<em><u>Solution:</u></em>

Given that, Alees and Emma design an office park in 28 weeks

Each architect spends 19 hours each week on this project

To find: Total number of hours the architects work on this project

From given,

Total number of weeks = 28

Each architect spends 19 hours each week

Therefore,

Time spent in one week by Alees = 19 hours

Time spent in one week by Emma = 19 hours

<em><u>Total number of hours the architects work on this project</u></em>

Total\ number\ of\ hours = (19 \times 28) + (19 \times 28)\\\\Total\ number\ of\ hours = 532 + 532\\\\Total\ number\ of\ hours = 1064

Thus, they spend 1064 hours together

7 0
4 years ago
A teacher decided to bring a jar of 530 pieces of small candy to his 100-student classroom so students could practice estimation
nordsb [41]

Answer:

Yes, because the population distribution is normally distributed, and we have a random sample.

Step-by-step explanation:

If the population is skewed, then the sample mean won't be normal for when N is small.

If the population is normal, then the distribution of sample mean looks normal even if N = 2.

If the population is skewed, then the distribution of sample mean looks more and more normal when N gets larger.

Since we have use 33% of the student, then N is large enough to conclude that the student are bad at guessing

8 0
3 years ago
Plz help! will give brainliest!!!
Damm [24]

Answer:

C

Step-by-step explanation:

I took a guess

4 0
3 years ago
A plane traveled 960 miles each way to Jakarta and back. The trip there was with the wind. It took 10 hours. The trip back was i
Nastasia [14]

Answer:

Wind speed = 40 km/hr

Speed of the plane in still air = 280km/hr

Step-by-step explanation:

Formula to use

Distance = Rate multiplied by Time

D = R × T

Speed of the plane in still air = a

Speed of the wind = b

Plane with the wind (tailwind) is a + b where the time = 3hours

Plane against the wind is a - b, where the time = 4hours

This would give us 2 equations

3 × (a+ b) = 960

3a + 3b = 960 ...... Equation 1

4 × (a- b) = 960

4a - 4b = 960 ........ Equation 2

Solve this like you would with system of equations:

We solve the equation using elimination method.

Mulitply equation 1 by 4 and equation 2 by -3

4 × (3a + 3b = 960)

12a + 12b = 3840 ..... Equation 4

-3 × (4a- 4b = 960)

-12a + 12b= -2880 ........ Equation 5

Therefore we have

12a + 12b = 3840 ..... Equation 4

-12a + 12b= -2880 ........ Equation 5

24b = 960

b = 960÷ 24

b = 40

Wind Speed = 40km/hr

To find the speed of air, we use equation 2

4a - 4b = 960 ........ Equation 2

Substituting 40 which is wind of speed for b in equation 2 we would have

4a - 4(40) = 960

4a - 160 = 960

4a = 960 + 160

4a = 1120

a = 1120 ÷ 4

a = 280

The speed of the small plane in still air is 280 km/hr

8 0
3 years ago
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