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3 years ago

The dot plot below shows how many chocolate chips were in each cookie Lauren brought to school.

Mathematics

1 answer:

Marta_Voda [28]3 years ago

5 0

8+9+10= 27 and 27 divided by 3 is 9. So the mean of the chocolate chips is 9

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Is it 7-n or n-7? (Number 7)

Annette [7]

7-n
the 7 comes before the n in the equation

5 0

3 years ago

Read 2 more answers

3(10m+3z+12) for m=3 and z=6

Kryger [21]

180 is the answer 3(30+18+12) distributive property gives you 90+54+36 which equals 180

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4 years ago

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The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i

Margarita [4]

Answer:

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

Step-by-step explanation:

We know the area of a rectangular room is the multiplication of the length and width:

$Area= 3.955m*3.955m\\Area= 15.642 m^2$

Now we need to know the uncertainty, the uncertainty of a multiplication is:

$\frac{δ_a}{|Area|} =\frac{δ_L}{|L|}+\frac{δ_W}{|W|}$ (1)

$δ_A$ : Area uncertainty

$δ_L$ : Length uncertainty

$δ_W$ : Width uncertainty

A: Area of the room

L: Length

W: Width

Clearing the uncertainty of the area:

$δ_A=(\frac{δ_x}{|x|}+\frac{δ_y}{|y|})*Area$ (2)

$δ_A=(\frac{0.005}{|3.955|}+\frac{0.005}{|3.955|})*15.642 m^2$

$δ_A= 0.040 m^2$

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

6 0

3 years ago

Hay 150 numeros en una rifa ¿ cuantos habria que comprar para tener un 8% de probalidad pra ganarla

krok68 [10]

Answer:

12 numeros

Step-by-step explanation:

para que pueda obtener el 8% de probabilidad, tendrá que comprar el 8% de los números

8% x 150

8 x 150

100

=12 numeros

espero eso ayude

3 0

3 years ago

Two jets simultaneously started traveling in opposite directions from the same airport. Four hours later they were 3800 miles ap

Basile [38]

Step-by-step explanation:

the slower plane traveled x miles in 4 hours.

the faster plane traveled x + 4×80 = x + 320 miles in 4 hours.

so,

x + x + 320 = 3800 miles

2x =3480 miles

x =1740 miles (in 4 hours) .

that means the slower plane's speed was 435 mph.

and the faster plane's speed was 435 + 80 = 515 mph.

7 0

2 years ago