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3 years ago

15

starting on day 1 with 1 jumping jack, keila doubles the number of jumping jacks she does every day. How many jumping jack will

she do on day 10

1 answer:

Nina [5.8K]3 years ago

5 0

She would have done 512 jumping jacks on the 10th day.

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In 2009, a tree was 10 feet tall. In 2012, the tree was 16 feet tall. Construct a linear model that represents the height, h, of

HACTEHA [7]

Answer:

h = 2t + 4

Step-by-step explanation:

Solution:-

- The height of the tree = h

- The number of years elapsed after 2006 = t

- height h1 = 10 ft, t1 = ( 2009 - 2006 ) = 3 yrs

- height h2 = 16 ft, t2 = ( 2012 - 2006 ) = 6 years

- The linear model of tree height "h" as a function of time "t" years after 2006 can be expressed in the form:

h = m*t + c

Where, m = The rate of change of height

c = The initial height of tree in 2006.

- We will use the given data to evaluate constant "m".

Rate = m = ( h2 - h1 ) / ( t2 - t1)

m = ( 16 - 10 ) / ( 6 - 3 )

m = 6 / 3 = 2

- Then use "m" and given set of data to evaluate the initial height of tree "c" in year 2006.

h = 2*t + c

h1 = 2*t1 + c

c = 10 - 2*3 = 4 ft

- The linear model for the height of tree "h" as fucntion of time "t" years after 2006 will be:

h = 2t + 4

8 0

3 years ago

Read 2 more answers

The vertex angle of an isosceles triangle measures 26° . The base is 30 units long. What is the length of a leg of the isosceles

sergejj [24]

Answer:

65.46 units

Step-by-step explanation:

Given the information:

The vertex angle of an isosceles triangle measures 26°

=> the leg angle is:

= (180° - 26° )/2

= 77°

The base is 30 units

Let x is the length of the leg side (x>0)

We use cosine law to find x, we have:

$30^{2}$ = $x^{2} +x^{2} -2xxCos(26)$ Because the isosceles has two equal leg sides

<=> $30^{2}$ = 2 $x^{2}$ - 1.79 $x^{2}$

<=> 0.21 $x^{2}$ = $30^{2}$

<=> $x^{2} =4285$

<=> x = 65.46 units

Hope it will find you well.

7 0

3 years ago

What is the ratio of x to y?<br> 5x = 6y

Anna71 [15]

Answer:

6:5

Step-by-step explanation:

Divide both sides by y . ⇒5xy=6y y. ⇒5xy=6. Divide both sides by 5 . ⇒5 x5 y=65. ⇒xy=65. ⇒x:y=6:5.

8 0

3 years ago

Read 2 more answers

I need help on this for brainly

Gre4nikov [31]

Answer:

d

Step-by-step explanation:

(7,1)

7 0

3 years ago

How do I do this math problem can you please help me solve it

Gnom [1K]

First, multiply 1/2 and 2 by 6 to simplify the equation. Then, subtract 12 from both sides of the equation to get x alone. Finally divide both sides of the equation by 3 to get x on it's own. That is your solution. X=-2/3 I attached a picture of my work. Hope this helped!

6 0

3 years ago