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3 years ago

HELP

Mathematics

1 answer:

kherson [118]3 years ago

4 0

Answer: For the equation simply substitute 30 in for v and 4 in for s in the equation given, so H=-16t^2+30t+4

Part 2.

If the juggler misses the ball, you wish to know the time that it takes for the ball to travel the four feet from his hand to the ground, so respectively,

4=-16t^2+30t+4 or 0=-16t^2+30t or 0 = -16t+30,

solving for t, t =30/16 seconds or 1.875 seconds

Step-by-step explanation:

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Katy has 100 quarters and dimes. Their total value is $19. How many of each coin does Katy have?

jekas [21]

Answer:

she has D=40, and Q=60

Step-by-step explanation:

7 0

3 years ago

What is 10 1/3 x 1/4? that is, what is ten and one third times one fourth?

Phantasy [73]

Answer: 31/12, or 2 7/12

Step-by-step explanation: The answer is actually very simple. All you have to do is to simplify 10 1/3 into 31/3, as 10x3+1=31. Then, you have to multiply 31/3 with 1/4. Do a simple fraction multiplication, and you get 31/12, or 2 7/12 if your teacher is asking for a mixed number. Sometimes simplifying is better

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4 years ago

A deer population is declining by 2.2% per year. The population can be modelled using the formula p = 240(0.978)n , where P is t

ale4655 [162]

Answer:

The current deer population is 240.

Step-by-step explanation:

The expression given models a exponential decay follows:

$p(n) = 240*(0.978)^n$

For every year that passes since the beginning of the count the population is 0.978 of the year prior. Assuming that the count starts at this year, then "n" is equal to 0, applying this value of n to the formula gives us:

$p(0) = 240*(0.978)^0\\p(0) = 240*1 = 240$

The current deer population is 240.

3 0

4 years ago

Debbie cut a cord into sixths . She used five of the to make necklaces . She used equal lengths of the remaining cord for each o

Brut [27]

So she used $\frac{5}{6}$ of the cord to make necklaces.
$1- \frac{5}{6} = \frac{1}{6}$

She splits the $\frac{1}{6}$ length into 4 equal lengths.
To divide a fraction by a fraction, you multiply it by its reciprocal.
$\frac{1}{6} ( \frac{1}{4})$
$=\frac{1}{24}$

She used $\frac{1}{24}$ of the original chord to make each bracelet.

4 0

3 years ago

Guys help me please ,how to solve it? i need a solution

Ludmilka [50]

Answer:

well, x = 5

Step-by-step explanation:

here,

EB Is parallel to DC , so

Angle AEB = Angle ADE

( because they are corresponding angle pair )

Angle ABE = Angle ACD

( because they are corresponding angle pair )

triangle ADC Is similar to triangle AEB

(By AA similarity criteria )

hence AE / ED = AB / BC ( by CPCT )

so 24/10 = 12/x

=》 24/12= 10/x

=》 x = 5

okay i hope u got it

8 0

2 years ago