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3 years ago

WHAT IS HELP PLEASE 6x2 -2x3 +x4 =? DONT ANSWER TO GET QUICK POINTS

Mathematics

2 answers:

Nuetrik [128]3 years ago

8 0

The correct answer is / =10x

blondinia [14]3 years ago

3 0

Answer:

i told you in the comment it equals 7

Step-by-step explanation:

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If yall bored just join this but its anonymous soo

Brut [27]

Answer:

Heyy

Step-by-step explanation:

Please mark me as a Brainlist please

3 0

2 years ago

The radius of a spherical balloon a is increasing at a constant rate of 0.1 cm/s. another balloon, b, is being continuously defl

Dimas [21]

Let $r_A$ and $r_B$ be the respective radii of balloons A and B. If the fixed total volume is V, then

$V = \dfrac{4\pi}3\left({r_A}^3 + {r_B}^3\right)$

and knowing $r_A=10\,\rm cm$ and $r_B=9\,\rm cm$ at the start, we have V = 6916π/3 cm³. Then when $r_A=12\,\rm cm$ , the radius of the other sphere is $r_B=1\,\rm cm$ .

Differentiating both sides with respect to time t gives a relation between the rates of change of the radii:

$0 = 4\pi \left({r_A}^2 \dfrac{dr_A}{dt} + {r_B}^2 \dfrac{dr_B}{dt}\right) \implies \dfrac{dr_B}{dt} = -\left(\dfrac{r_A}{r_B}\right)^2 \dfrac{dr_A}{dt}$

We're given $\frac{dr_A}{dt} = 0.1\frac{\rm cm}{\rm s}$ the whole time. At the moment $r_A=12\,\rm cm$ , the radius of balloon B is changing at a rate of

$\dfrac{dr_B}{dt} = -\left(\dfrac{12\,\rm cm}{1\,\rm cm}\right)^2 \left(0.1\dfrac{\rm cm}{\rm s}\right) = \boxed{-14.4 \dfrac{\rm cm}{\rm s}}$

8 0

2 years ago

Which sentence is punctuated correctly? Finally Juno, and her satellite were able to return home to her family. Finally Juno and

dybincka [34]

Answer:

Finally, Juno and her satellite were able to return home to her family.

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Bella needs to read three chapters of her book. If she reads 3/5 of a chapter each night, how many nights will it take her to re

konstantin123 [22]

It will take her 5 nights to read three chapters.

Take $\frac{3}{5}$ and add up until you get to 3.

1st night: 3/5

2nd night: 1 1/5

3rd night: 1 4/5

4th night: 2 2/5

5th night: 3.

5 0

3 years ago

Read 2 more answers

A family has two children. When asked if he has at least one daughter named Ann, the fatherreplies, "Yes." What is the probabili

Leviafan [203]

Answer:

33.3% probability that both children are girls, if we know that the family has at least one daughter named Ann.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The family has two children.

The sample space, that is, the genders of the children may be divided in the following way, in which b means boy and g means girl.

b - b

b - g

g - b

g - g

We know that they have at least one girl. So the sample space is:

b - g

g - b

g - g

What is the probability that both children are girls, if we know that the family has at least one daughter named Ann?

Desired outcomes:

Both children being girls, so

g - g

1 desired outcome

Total outcomes

b - g

g - b

g - g

3 total outcomes

Probability

1/3 = 0.333

33.3% probability that both children are girls, if we know that the family has at least one daughter named Ann.

4 0

3 years ago