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3 years ago

Which pair of rectangles is similar? See attatchment

Mathematics

2 answers:

andreev551 [17]3 years ago

6 0

(2,4) and (2,4). (6,8) and (9,12).

Paha777 [63]3 years ago

4 0

Answer:

the second ones

Step-by-step explanation:

You might be interested in

Find the derivative using the limit process of f (x) = - 10x

zubka84 [21]

Answer:

$\frac{d}{dx} f(x) =-10$

General Formulas and Concepts:

Calculus

Derivative Notation
Definition of a Derivative: $\lim_{h \to 0} \frac{f(x+h)-f(x)}{h}$

Step-by-step explanation:

Step 1: Define

f(x) = -10x

Step 2: Find Derivative

Substitute: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10(x + h)-(-10x)}{h}$
Distribute -10: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10x -10h-(-10x)}{h}$
Distribute -1: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10x -10h+10x}{h}$
Combine like terms: $\frac{d}{dx} f(x)= \lim_{h \to 0} \frac{-10h}{h}$
Divide: $\frac{d}{dx} f(x)= \lim_{h \to 0} -10$
Evaluate: $\frac{d}{dx} f(x)=-10$

3 0

4 years ago

A flower vendor sells roses for 50 cents each. How much does she pay per flower is she makes $6.00 on every twenty dollars worth

Lelu [443]

One rose is 50 cents, so 2 roses cost $1 ( 50 cents x 2).

2 roses per dollar x 20 dollars = 40 total roses sold.

When they sell $20 dollars they make $6, so that means they pay 20-6 = $14 dollars for the 40 roses.

$14 / 40 roses = 0.35 per rose.

She pays 35 cents per rose.

3 0

3 years ago

Manuel has a boat that can move at a speed of 15 km/h in still water. He rides 140 km downstream in a river in the same time it

Anika [276]

Answer: the speed of the river is 9km/h

Step-by-step explanation:

Let x represent the speed of the river current.

He rides 140 km downstream in a river in the same time it takes to ride 35km upstream. This means that his speed was higher when riding downstream and it was lower when riding upstream.

Assuming he rode in the direction of the river current when coming downstream and rode against the current when going upstream.

time = distance/speed

Manuel has a boat that can move at a speed of 15 km/h

His downstream speed would be

15 + x

time spent coming downstream would be

140/(15 + x)

His downstream speed would be

15 - x

time spent going downstream would be

35/(15 - x)

Since the time is the same, then

140/(15 + x) = 35/(15 - x)

Crossmultiplying

140(15 - x) = 35(15 + x)

2100 - 140x = 525 + 35x

140x + 35x = 2100 - 525

175x = 1575

x = 1575/175

x = 9

7 0

4 years ago

A line that includes the point (3, 2) has a slope of 0. What is its equation in slope-intercept

Yanka [14]

Answer:

y=0x+2

Step-by-step explanation:

3 0

3 years ago

Thanks for helping with calculus

allochka39001 [22]

Integrating $f(x)$ gives

$g(x)=\displaystyle\int f(x)\,\mathrm dx=C+\sum_{n=0}^\infty\frac{a_n}{n+1}x^{n+1}$

Notice that $x=0$ forces all terms in the sum to be 0, so that

$g(0)=C=5$

and hence

$g(x)=\displaystyle5+\sum_{n=0}^\infty\frac{a_n}{n+1}x^{n+1}$

making the first option correct.

3 0

4 years ago