Mathematics High School

PLEASE HELO ME AND EXPLAIN PLEASE. AND PLEASE SHOW IN STEPS!! i will mark brainliest if you get it correct!

Answers

Answer 1

Step-by-step explanation:

The height of the swipe card is given by :

[tex]h(t)=-3t^2+15t+18[/tex] .....(1)

We need to find the maximum height of the swipe card and the time to reach the maximum height.

For maximum height, put dh/dt = 0

So,

[tex]\dfrac{d}{dt}(-3t^2+15t+18)=0\\\\-9t+15=0\\\\t=\dfrac{15}{9}\\\\t=1.67\ s[/tex]

It will take 1.67 seconds to reach the maximum height.

Now, put t = 1.67 s in equation (1).

[tex]h(1.67)=-3(1.67)^2+15(1.67)+18\\\\=34.68\ feet[/tex]

Hence, the maximum height of the swipe card is 34.68 feet and the time to reach this height is 1.67 s.

Related Questions

what is the missing length?

Answers

7.9^2 + 8.5^2= sqrt 134.66 = 11.60 ft

Solve the equation 18+a= -5

Answers

Answer:

The answer is -23

Step

the answer is a = -23

Solve the system of linear equations by elimination.

2x+5y=16
3x−5y=−1

Answers

The Answer is (3,2)

The answer is 3,2 hope this helps

the graph of y=x^2-4x is shown. name a zero of the function below

Answers

Answer:

0 and 4

Step-by-step explanation:

y = x^2 - 4x can be factored as follows: y = x(x - 4).

We find the zeros by setting this factored form equal to zero and solving for x:

x(x - 4) = 0, or x = 0, or x = 4.

The two zeros of this function are 0 and 4.

A circle whose center is (2,0) and passes through the point (-5,0).

Answers

Answer:

2791

Step-by-step explanation:

Yea

2179 because of da measurements

Find the area of a rectangle with side lengths 5 /8 ft. And 1/ 3 ft. A 1-foot by 1-foot square is shown. The square is divided into 8 rows and 3 columns. Therefore, there are a total of 24 equal-sized cells inside the square. A. 5 /11 ft 2 B. 1 11/ 12 ft 2 C. 6/ 11 ft 2 D. 5 /24 ft 2

Answers

Answer: 5/24 ft²

Step-by-step explanation:

To find the the area of a rectangle with side lengths 5/8 ft and 1/3 ft, we need to know that the area of a rectangle is gotten by multiplying the length by the width.

In this case, the area of the rectangle will be:

= 5/8 × 1/3

= 5/24 ft²

637m as a fraction of 7.7km

Answers

Answer:

637/7700

Step-by-step explanation:

7.7 km = 7700 m

PLZ HELP WITH MATH!!!

Answers

Answer:

128 in.^2?

Step-by-step explanation:

a rectangle is also a parallelogram, so find the area of the rectangles.

if it is a 30-60-90 triangle, 8 inches is x, and to find the sides, it is either (x)sqrt(3), or in this case, 2x, so 16x8= 128?

PLEASE HELP ILL GIVE BRAINLIEST
PLEAZE SHOW WORK

Answers

Answer:

Step-by-step explanation:

divide it

45/.7

which number is composite 5,11,9,2

Answers

The number 11 is combosit

Answer:

Step-by-step explanation:

trust

Alejandra plans to sew fringe on a scarf. The scarf is shaped like a rectangle. The length of the scarf is 44 inches. The width is one half the length.

Answers

Answer:

Total fringe needed = 132 inches

Step-by-step explanation:

P.S - The exact question is -

Given - Alejandra plans to sew fringe on a scarf. The scarf is shaped like a rectangle. The length of the scarf is 44 inches. The width is one half the length.

To find - How much fringe does Alejandra need?

Proof -

Total fringe needed = Perimeter of the rectangle.

Now,

We know that,

Perimeter of the Rectangle = 2(Length + Width)

Now,

Given that,

Length = 44 inches

Width = one half the length

= [tex]\frac{1}{2}[/tex] × 44 = 22 inches

⇒Width = 22 inches

∴ we get

Perimeter of the Rectangle = 2(44 + 22)

= 2(66) = 132 inches

⇒Perimeter of Rectangle = 132 inches

∴ we get

Total fringe needed = Perimeter of the rectangle = 132 inches

⇒Total fringe needed = 132 inches

PLZ IF RIGHT I WILL GIVE BRAINLIST: One year, the population of a city was 64,000. Several years later it was 53,120. Find the percent decrease.
Ans=______%

Answers

the answer is it decreased 17%

im not 100% btw

Write the polynomial 4x+5x^3+17x^5-7 in descending order.

Answers

Answer:

5x+4x^17+3x^5-7

Step-by-step explanation:

What is the correct answer?

Answers

Answer:

Step-by-step explanation:

The answer to your question is F

Can someone helpppp plssss

Answers

Answer:

angleQ+angleR is 180degrees because of the properties of isoceles trapezoid. So, if you set equation and solve, you'll get the fact that x is 12, and angleR is 130degrees, and angleQ is 50degrees. According to the properties of isoceles trapezoid, angleQ is the same as angleT. So, angleT is 50degrees

Answer:

Step-by-step explanation:

PLS HELP!!! 7TH GRADE MATH

Answers

Answer:

The first picture is 72 ft²

Step-by-step explanation:

Answer for 1:

242

Answer for 2:

214.57

Answer for 3:

88.79

Explanation:

I used Goggle

please help i need answers now

Answers

Answer:

Step-by-step explanation:

HELP ME PLEASE I BEG YOU AND I WILL VOTE YOU BRAINLIEST IF YOU REALLY HELP!!!!

Answers

The answer to your question is (A, -3,-5)

Answer:

The correct answer is A(-3,-5)

There are 136 students at the dance. 62 of the students are females. What is the ratio of boys to girls at the dance? PLEASE HURRY!!!

Answers

The ratio of boys to girls is 74:62

74 represents the boys

62 represents the girls

What is the distance between the points round to the nearest tenth if necessary (-7,-4) (4,5)

Answers

Answer:

-3 and 1

Step-by-step explanation:

-3 and 1 hope this helps!!

Find the volume of each figure. Round your answers to the nearest hundredth, if necessary

Answers

Answer:

666.67π .ft^3

here's your solution

=> radius of cone = 10 ft

=> height of cone = 20 ft

=> volume of cone = πr^2h/3

=> putting the value of radius and height

=> volume = 10^2*20/3π

=> volume = 666.67π .ft^3

hope it helps

i have no idea where to plot the points

Answers

Answer:

1/4 is slope\

Step-by-step explanation:

1/4 it’s going on a down slope

0.23 is a whole number?

Answers

Answer:

0.23 is a fraction and there is no way to represent it as a whole number.

hope it helps :)

Step-by-step explanation:

Half the number of guesses are
less than what number?

Answers

Answer:

C. 74

Step-by-step explanation:

add up all the numbers but not the value so you have 18 numbers. divide that by 2 and get 9. so 74 is between 73 and 78 so it divides the 18 numbers evenly into 9 and 9.

Help with number 1 please.

Answers

Answer:

Step-by-step explanation:

12x - 6y = 13
8x - 4y = -21

Answers

Answer:

Step-by-step explanation:

Can someone help me quick. I really need help!! I’ll mark brainliest!! Please & thank youuu!

Answers

~Kindly see the attached picture!

✧ Hope I helped ! ✧

Have a wonderful day / night ! ♡

Let me know if you have any questions regarding my answer ツ

[tex] \underline{ \underline{ \mathfrak{Carry \: on \: learning}}}[/tex] !! ✎

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Figure A is a scale image of Figure B.

Answers

Answer:

x = 5.4

Step-by-step explanation:

Corresponding sides are in proportion, that is

[tex]\frac{x}{7.2}[/tex] = [tex]\frac{3}{4}[/tex] ( cross- multiply )

4x = 21.6 ( divide both sides by 4 )

x = 5.4

find the value of given expression

[tex] \sqrt{25 \times 625 \times \times 25} [/tex]

Answers

Answer:

±625

Step-by-step explanation:

[tex]\sqrt{25 x 625 x 25}[/tex]

[tex]\sqrt{390625}[/tex]

±625

Answer:

√(25×625×25)√{5²×25²×5²)=±(5×25×5}=±625 is your answer

Which is more, 1 quart or 3 cups?

Answers

Answer:

1 quart is more.

Step-by-step explanation:

1 quart =4cups so 1 quart is more.

Answer:

1 liquid quart is more then 3 cups because 1 quart is the same as 4 cups and 4 cups is more then 3 cups...

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