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2 years ago

8

An albatross is a large bird that can fly 400 kilometers in 8 hours at a constant speed. Using d for distance in kilometers and

t for number of hours, an equation that represents this situation is d=50t. The equation tells us: to find the distance (d), multiply the time (t) by 50.
What are two constants of proportionality for the relationship between distance in kilometers and number of hours?

What is the relationship between these two values?

Write another equation that relates d and t in this context. HINT: Think about what you do to find t. This equation will begin with t= _

2 answers:

finlep [7]2 years ago

7 0

Answer:

explain it better plz

Step-by-step explanation:

Alika [10]2 years ago

5 0

Answer:

2500

Step-by-step explanation:

You might be interested in

The 2nd term of an arithmetic progression is (1/2) and the sum of the first 14th terms is -70. Find

Shalnov [3]

Answer:

The common difference is -1.

The last term (the 14th term) is -11.5.

Step-by-step explanation:

In an arithmetic sequence, the second term is 0.5 and the sum of the first 14 terms is -70.

We want to determine the: (a) common difference and (b) the last term.

We can write an explicit formula to represent the sequence. An arithmetic sequence can be modeled by the formula:

$\displaystyle x_n=a+d(n-1)$

Where <em>a</em> is the initial term, <em>d </em>is the common difference, and <em>n</em> represents the <em>n</em>th term.

Since the second term is 0.5:

$x_2=0.5=a+d(2-1)$

Simplify:

$x_2=0.5=a+d$

The sum of an arithmetic sequence is given by the formula:

$\displaystyle S=\frac{k}{2}\left(a+x_k\right)$

Where <em>k</em> is the number of terms and <em>x_k</em> is the last term.

Since the sum of the first 14 terms is -70, <em>S</em> = -70 and <em>k </em>= 14:

Using our explicit formula, the last term is:

$x_{14}=a+d(14-1)=a+13d$

Substitute:

$\displaystyle -70=\frac{14}{2}(a+(a+13d))$

Simplifiy:

$-10=2a+13d$

Rewrite the equation for the second term:

$a=0.5-d$

Substitute:

$-10=2(0.5-d)+13d$

Simplify:

$-10=1-2d+13d$

Solve for <em>d: </em>

<em /> $d=-1$ <em />

Hence, our common difference is -1.

Solve for <em>a</em>, the initial term:

$a=0.5-(-1)=1.5$

So, our explicit formula is now:

$x_n=1.5-1(n-1)=1.5-n+1=2.5-n$

So, the last term (which is 14) is:

$x_{14}=2.5-(14)=-11.5$

5 0

2 years ago

How do you solve: you have two distinct gaseous compounds made from element x and y. the mass percents are as follows: compound

saveliy_v [14]

solution:

Let's assume that a unit of compound 1 is 100g and a unit of compound 2 is 100g... in other words, compound 1 will be 30.43g X and 69.57g Y, and compound 2 will be 63.64g X and 36g Y.

According to the given in your problem, we can also write the following two chemical equations:

X+2Y--> 2(compound 1)

2X+Y--> 2(compound 2)

using the 100g units above we can also write this as:

X+2Y--> 2(30.43g X) + 2(69.57g Y)

2X+Y--> 2(63.64g X) + 2(36g Y)

We add these two chemical equations together and get:

3X+3Y--> 2(30.43g+63.64g X) + 2(69.57g+36g Y)

This can be written more simply as:

3X+3Y--> 188.14g X + 211.14g Y

In other words, 3 volumes of X gives 188.14g of X, and 3 volumes of Y gives 211.14g of Y. Dividing one by 3 and you get 62.71g per volume X, and 70.38g per volume Y.

x: 62.71 g/mol.

Y: 70.38 g/mol.

8 0

2 years ago

Help please quickly!!!!1!

Sindrei [870]

there is no question here

5 0

2 years ago

Read 2 more answers

Which expression can be used to approximate the expression below,for all positive number a,b and x where a =/ 1 and b=/ 1

rodikova [14]

Answer:

The correct option is 1.

Step-by-step explanation:

The given expression is

$log_ax$

The value of a is 1 and the value of b is 1.

According to the logarithm property,

$log_mn=\frac{log_pm}{log_pn}$

Using this property, we get

$log_ax=\frac{log_bx}{log_ba}$

The required expression is $\frac{log_bx}{log_ba}$ .

$log_1x=\frac{log_1x}{log_11}$

$log_1x=log_1x$ $[\because log_aa=1]$

Left hand side is equal to the right hand sides, therefore option 1 is correct.

4 0

2 years ago

Which two numbers does √52 lie between on a number line?

finlep [7]

Answer:

7 and 8 because 52 is between 49 and 64

Step-by-step explanation:

4 0

2 years ago