help pleaseeee ASAP just tell me the answer

Answer:

length = 6

width = 3 1/2

Step-by-step explanation:

l = length

w = width

l = 2w-1

w(2w-1) = 21

2w² - 1 - 21 = 0

(2w - 7)(w + 3) = 0

w = 7/2 = 3 1/2

find 'l':  l = 2(7/2) - 1 = 7-1 = 6

Answer:

141.94 cm³/s

Step-by-step explanation:

Since the volume of the tank V = πr²h, and both the height and radius of the tank change with time, we find the rate of change of the volume with time, dV/dt from

dV/dt = dV//dr × dr/dt + dV/dh × dh/dt

where dV/dr = 2πrh, dr/dt = + 0.2 cm/s (since the radius of the tank expands), dV/dh = πr² and dh/dt = -0.5 cm/s (since the height of the tank decreases)

So,

dV/dt = dV/dr × dr/dt + dV/dh × dh/dt

dV/dt =  2πrh ×  + 0.2 cm/s +  πr² ×  -0.5 cm/s

dV/dt =  0.4πrh cm/s -  0.5πr² cm/s

dV/dt =  πr(0.4h - 0.5r) cm/s

We now find the rate at which the volume is changing when r = 1.8 cm and h = 65 cm.

So,

dV/dt =  π(1.8 cm)(0.4 × 65 cm - 0.5 × 1.8 cm) cm/s

dV/dt =  π(1.8 cm)(26 cm - 0.9 cm) cm/s

dV/dt =  π(1.8 cm)(25.1 cm) cm/s

dV/dt =  π(45.18 cm²) cm/s

dV/dt = 141.94 cm³/s

Answer:

17

Step-by-step explanation:

what you have to is simple, first do 32-8 which get you 24, thats how many they won. Then do 8x1/4 to get 2, she played 2 games as catcher and lost, then do the same thing with the winning games. 24x5/8 should get you 15. she played 15 games as catcher and won. then do 15+2 to get 17.

hope that helps!

Answer:

1/4 - won

7/8 - katy played catcher

hope this helps you :)

Step-by-step explanation:

hope it helps you......

Answer:

8 mins 56 secs

Step-by-step explanation:

3 minutes and 21 seconds divided by 3 laps is 1.07 so it takes her 1 minute and 0.7 sec for each lap then u just multuply 1.07 by 8 and u get 8.56 meaning 8 mins and 56 secs. hope i helped :)

Answer:

4

Step-by-step explanation:

because The square root of 16 is 4, which is a rational number.

Answer:

4

Step-by-step explanation:

Answer:

5,000 milligrams

Step-by-step explanation:

Know That One 1 gram equals = 1,000 milligrams

Hope this Helps!

Answer:

180 feet

Step-by-step explanation:

85+95=180 because depth + depth.

The total deep 180 feet from the surface was the coral.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

Given that diver found the school of fish 85 feet below the surface of the ocean. Which he found coral 95 feet deeper than the fish.

The total deep from the surface was the coral.

Therefore, it could be;

depth + depth.

85 + 95 = 180

Hence, the total deep 180 feet from the surface was the coral.

Learn more about the unitary method, please visit the link given below;

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Answer:

[tex]\frac{y^{3}}{2z^{7}}[/tex]  

Step-by-step explanation:

1. Move  z^ − 3  to the denominator using the negative exponent rule  b ^− n = 1/ b ^n

2. Multiply  z ^4  by  z ^3  by adding the exponents.

3. Cancel the common factor of  4  and  8

4. Cancel the common factor of  x^2

Answer:

[tex]\frac{y^{3} }{2z^{7} }[/tex]

Step-by-step explanation:

Answer:

>100,000

Step-by-step explanation:

Answer:

23.56mm

Step-by-step explanation:

Circumference = 2 * pi *r = 2*pi* (3.75mm)

Answer: 23.56mm

(5x6)x(3x2) = (30x6)= 180

Answer:

first option 1/2

Step-by-step explanation:

2,3,5 are the prime numbers from that set

each individual number has a 1 in 6 chance of landing on it and we have 3 so...

3 of 6 possibilities would be prime numbers. Simplify to...

1 in 2

Answer:

(x,y)=(5,-1)

Step-by-step explanation:

1. 2x+y=9  ---> y=9-2x

2. Substitute y=9-2x into 3x-2y=17 ---> 3x-2(9-2x)=17 ---> 3x-18+4x=17 --> 7x=35 ---> x=5.

3. Substitute x=5 into 2x+y=9 ---> 2*5+y=9 ---> y=9-10 ---> y= -1

Answer:

20 feet

Step-by-step explanation:

20 feet

because the diagram said so....

Answer:

range= 8

Step-by-step explanation:

to find range> subtract highest number to the lowest

so 10- 2= 8

Answer:

20 ft.

Step-by-step explanation:

Diameter is length across the circle/ across the middle

GO GO GO

<3

Answer:

23 and 31 are the numbers you are searching for.

Step-by-step explanation:

23 + 31 = 54

31 - 23 = 8

Have a nice day!

Answer:

5x² - 5x + 17

Step-by-step explanation:

(3x² + 7) + (2x² - 5x + 10)

Combine the like terms.

3x² + 2x² = 5x²

-5x does not have a like term, so there is no change.

7 + 10 = 17

Combine them, and the final equation is

5x² - 5x + 17.

Answer: 5x² - 5x + 17

Step-by-step explanation:

(3x^2+7)+(2x^2-5x+10)

3x^2 + 2x^2

-5x

7 + 10

5x^2 - 5x + 17

- If I've understood correctly

I think you have to multiply them to get the answer $13.5

Answer:211

Step-by-step explanation:you figure out you height by division and add that 120+75+16 and that’s 211 we learning that in school

Answer:

(2x+3)(x+4)

Step-by-step explanation:

hope the picture helps.

Answer:

5x² - 10x + 4  

Step-by-step explanation:

11x² - 10x + 4 = 6x²

Subtract 6x² from both sides of the equation.  

5x² - 10x + 4  

Answer:

A. 3.15

Step-by-step explanation:

Sana makatulong

E(x) = 3.15.

By displaying the proportion of data points (referred to as "bars") that fall inside a certain range of values, a histogram gives a visual explanation of numerical data. A vertical bar graph and a histogram are comparable.

E(X) = ∑( x ∗ P(x))

Given a probability histogram for a discrete random variable X.

We will drive the P(x) for every value of x.

P(X=1)=0.1

P(X=2)=0.2

P(X=3)=0.3

P(X=4)=0.25

P(X=5)=0.15

Putting these values in a summation equation to find E(x)

E(x) = 1*0.1 +2*0.2 + 3*0.3 + 4*0.25 + 5* 0.15

E(x) = 3.15

Therefore E(x) for the given histogram far random variable x will be 3.15.

Learn more about distribution here:

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Answer: 18 cups

Step-by-step explanation:

Answer:

the answer is 18 cups :))

Answer:

2(x+10)

Step-by-step explanation:

Well since sum is addition and the number and 10 are the sum, let’s make the “number“ (x) and add em up. 10+x.

Now we gotta double that sum which is basically

2(10+x)

Answer:

2x^2+3x^4+1

Step-by-step explanation:

a trinomial  is composed by three monomials.

So only A and B can be correct

the degree of a polynomial is the same of the monomial that compose it with the biggest degree

so the answer is B because the monomial with the biggest degree is 3x^4 (its degree is 4)