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Answer:

21

Step-by-step explanation:

KL = 12

LM = 9

12 + 9 = 21

KM = 21

Answer:

a) 72.25sec

b) 6.25secs

c) after 10.5secs and 2 secs

Step-by-step explanation:

Given the height reached by the rocket expressed as;

s(t)= -4t^2 + 50t - 84

At maximum height, the velocity of the rocket is zero i.e ds/dt  = 0

ds/dt = -8t + 50

0 = -8t + 50

8t = 50

t = 50/8

t = 6.25secs

Hence it will reach the maximum height after 6.25secs

To get the maximum height, you will substitute t - 6.25s into the given expression

s(t)= -4t^2 + 50t - 84

s(6.25) = -4(6.25)^2 + 50(6.25) - 84

s(6.25) = -156.25 + 312.5 - 84

s(6.25)  = 72.25feet

Hence the maximum height reached by the rocket is 72.25feet

The rocket will reach the ground when s(t) = 0

Substitute into the expression

s(t)= -4t^2 + 50t - 84

0 = -4t^2 + 50t - 84

4t^2 - 50t + 84 = 0

2t^2 - 25t + 42 = 0

2t^2 - 4t - 21t + 42 = 0

2t(t-2)-21(t-2) = 0

(2t - 21) (t - 2) = 0

2t - 21 = 0 and t - 2 = 0

2t = 21 and t = 2

t = 10.5 and 2

Hence the time the rocket will reach the ground are after 10.5secs and 2 secs

Answer:

C

Step-by-step explanation:

You have 2 totals so the number of males + females = 127 so x + y = 127

Then there are 23 more males than females, it did not say 23 times more so B is out, so the female number + 23 = male number so y + 23 = x

Therefore letter C is the answer.

Answer:

answer C

Step-by-step explanation:

A chord of a circle is a straight line segment whose endpoints both lie on a circular arc. The infinite line extension of a chord is a secant line, or just secant.

A diameter is also a chord.

Answer: first would be 6 the next would be 12 then the next would be 18 and so on just add 6 for each one and for ten pizzas it would be 6*10 and that equals 60 im sure you get it

Answer:

b=312

g=396

you can use substitution or elimination

Step-by-step explanation:

(b+g=708)10

(15b+10g=8640)1

(10b+10g=7080)-

(15b+10g=8640)

10b-15b=-1560

-5b=-1560

divide both sides by -5

b=312

then substitute

b+g=708

312+g=708

g=708-312

g=396

so b=312

g=396

Answer:

Step-by-step explanation:

No dimensión? What are the dimensions?

Answer:

there is an association between how often a person purchases coffee from a coffee house and whether a person is a full time student.

Step-by-step explanation:

Answer:

C) H0 :  How often a person purchases coffee from a coffeehouse is not associated with whether a person is a full-time student.

Step-by-step explanation:

This represents a chi-square test for independence because one sample was taken and two variables were observed. This is an appropriate null hypothesis for a chi-square test for independence in this study as it hypothesizes no association between coffee-purchasing habits and full-time student status.

Answer:

the ability to objectively analyze information and draw a rational conclusion

Step-by-step explanation:

The critical thinking skill that is based on logic and reason is "Logical reasoning" or "Logical thinking."

Critical thinking is the process of actively and skillfully analyzing, evaluating, and synthesizing information to make reasoned judgments and decisions.

Among the various critical thinking skills, "Logical reasoning" plays a fundamental role in the process.

Logical reasoning involves using principles of logic and reason to assess arguments, statements, and evidence.

It aims to identify the validity and soundness of claims and draw logical conclusions based on available information.

Hence, logical reasoning is the critical thinking which is based on logic and reason.

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Answer:

The domain represents the time of motion of the meteor as it falls from 100 km height above the Earth's surface at a speed of 20 km

Step-by-step explanation:

The given parameters from the question are;

The elevation of the meteor above the Earth's surface = 100 km

The rate at which the meteor falls = 20 km per second

The 'x' values represent the time in seconds and the 'y' values represent the meteor's height

Therefore, we have;

y = 100 - 20·x

The domain of a function is the set of inputs to the function

Therefore, the domain represent the time it takes the meteor to reach the given 100 km height above the Earth's surface

At the start x = 0 seconds

On the Earth's surface, y = 0, therefore;

0 = 100 - 20·x

x = 100/20 = 5

When the meteor just touches the Earth's surface x = 5 seconds

Therefore, the domain is 0 ≤ x ≤ 5.

Answer:

4x+8x = 180 degrees, so x=15

Step-by-step explanation:

Answer:

sum of 4x and 8x is 180°

( straight line )

Given:

15 is decreased by three times a number, the result is 21.

To find:

The equation for the given statement and solve it.

Solution:

Let n be the unknown number. Then,

Three times of a number = [tex]3n[/tex]

15 is decreased by three times a number = [tex]15-3n[/tex]

It is given given that the result after subtraction is 21. So,

[tex]15-3n=21[/tex]

[tex]-3n=21-15[/tex]

[tex]-3n=6[/tex]

Divide both sides by -3.

[tex]n=\dfrac{6}{-3}[/tex]

[tex]n=-2[/tex]

Therefore, the required equation is [tex]15-3n=21[/tex] and its solution is [tex]n=-2[/tex]. Hence, the correct option is (a).

Answer:

a

Step-by-step explanation:

Answer:it’s B on edge bro

Step-by-step explanation:

Answer:

B.

Step-by-step explanation:

continent

Answer: s _< 40

Step-by-step explanation:

The correct inequality which represents the situation is,

⇒ s ≤ 40

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

At a state fair, every go-kart goes at most 40 mi/h.

Now, Let s represent the speed of a go-kart.

Hence, The correct inequality which represents the situation is,

⇒ s ≤ 40

Since, Symbol used for at most is, less than or equal to.

Thus, The correct inequality which represents the situation is,

⇒ s ≤ 40

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Answer:

First box is 50%

Second box is 60%

Step-by-step explanation:

Took the test and I got it right :)

The theoretical probability of picking a one-dollar coin from the piggy bank before the draw is 50%, But the experimental probability, based on the draw, is 60%

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

P(E) = Number of favorable outcomes / total number of outcomes

Jonathan's piggy bank contains 20 nickels, 30 quarters, and 50 one-dollar coins.

He picks 20 coins from the bank at random; 12 of these coins are one-dollar coins.

The total number of one-dollar coins = 50

Total number of coins the piggy bank contains = 100

The theoretical probability of picking a one-dollar coin from the piggy bank before the draw = 50/100

                           = 1/2

But the experimental probability, based on the draw, is 60%.

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Answer:

It's the B ,

B y=3x-1

hope this help you

Answer:

b

Step-by-step explanation:

Each x value in the table is multiplied by 3 and then subtracted by 1

Answer:

81.25%

Step-by-step explanation:

58-32=26

26/32=0.8125

0.8125x100=81.25

Sorry I'm not that good at explaining but here is something that helped me.

Answer:

a,a,d

Step-by-step explanation:

the formula has been given

Answer:

Step-by-step explanation:

3

Answer: The answer is C (sorry if this might be wrong I tried to do the math and I got C)

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

She can buy 4 bracelets because 4 x 9.50 = 38 + 12 = 50. So 4 would fit her budget perfectly without going over. LEt me know if you find any fault in my answer! Thanks! Have a good day! Hope this helps!

Answer:

I don't think so. Because what if that specific family member never checks their email. I think a good way would have been to email more than one or every person in that family (now since its extended you might not know everyone so just as many as you know of)

Answer:

-1 = s

Step-by-step explanation:

7 = -10s - 3

Add 3 to each side

7+3 = -10s - 3+3

10 = -10s

Divide each side by -10

10/-10 = -10s/-10

-1 = s

Answer:360

Step-by-step explanation:

Answer:

area =

[tex] \frac{1}{2} \times (10 + 6) \times 6 [/tex]

=

[tex]3 \times 16[/tex]

=

[tex]48 \: ft {}^{2} [/tex]

Answer:

Step-by-step explanation:

According to Pythagoras Theorem,

[tex]{(height)}^{2} + {(base)}^{2} = {(hypotenuse)}^{2} [/tex]

[tex] = > {12}^{2} + {5}^{2} = {x}^{2} [/tex]

[tex] = > {x}^{2} = 144 + 25[/tex]

[tex] = > {x}^{2} = 169[/tex]

[tex] = > x = \sqrt{169} [/tex]

=> x = 13 (Ans)

Answer: 73 will be your answer hope this helped

Step-by-step explanation:

Answer:

28, x , 62, 156

Step-by-step explanation:

Answer:

the  probability that the two butterflies she spots will both be type A butterflies is 0.0044

Step-by-step explanation:

The computation of the  probability that the two butterflies she spots will both be type A butterflies is shown below:

= 1 ÷ Type A × 1 ÷ Type A

= 1 ÷ 15 × 1 ÷ 15

= 1 ÷ 225

= 0.0044

Hence, the  probability that the two butterflies she spots will both be type A butterflies is 0.0044

Answer:

Didn't finish sorry. I wish I could help.