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3 years ago

7

if a certain number is decreased by 7 and the difference is then multiplied by 7, the result is the same as when the number is d

ecreased by 11 and that difference is multiplied by 11. Write an equation to represent this situation?

2 answers:

Nat2105 [25]3 years ago

6 0

7(x-7)=11(x-11)

.........................

marshall27 [118]3 years ago

4 0

Answer:

Belly

Step-by-step explanation:

One i ate alot of pizzas and then went to the bathroom

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3 years ago

(answer with "sometimes, always, or never true")<br> An integer is a whole number.

Pani-rosa [81]

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3 years ago

Read 2 more answers

natka813 [3]

Answer:

The area of the base B is equal to $770\ cm^{2}$

The volume is equal to $10,087\ cm^{3}$

Step-by-step explanation:

I will proceed to resolve the problem indicated in the attached figure.

The figure shown a inverted rectangular pyramid

The base is a rectangle

The area of the base B is equal to

$B=(35)(22)=770\ cm^{2}$

To find how many cubic centimeters of titanium are needed to manufacture one tip, calculate the volume of the figure

<em>Find the volume of the inverted rectangular pyramid</em>

The volume of the pyramid is equal to

$V=\frac{1}{3}BH$

we have

$B=770\ cm^{2}$

$H=39.3\ cm$

substitute

$V=\frac{1}{3}(770)(39.3)=10,087\ cm^{3}$

5 0

3 years ago

A train slows down as it rounds a sharp horizontal turn, going from 92.0 km/h to 54.0 km/h in the 16.0 s that it takes to round

Mnenie [13.5K]

Calculation of centripetal acceleration(ac):

$a_c=\frac{v^2}{r}$

we can change our speed in terms of m/s

$v=54km/h=54*\frac{1000}{3600} m/s$

now, we can plug these values

$a_c=\frac{(54*\frac{1000}{3600})^2}{130}$

$a_c=1.73077m/s^2$

Calculation of tangential acceleration(at):

$a_t=\frac{\Delta v}{\Delta t}$

now, we can plug values

$a_t=\frac{(54-92)*\frac{1000}{3600} }{16}$

now, we can simplify it

$a_t=-0.65972 m/s^2$

Calculation of resultant acceleration:

$a=\sqrt{(a_c)^2+(a_t)^2}$

now, we can plug values

$a=\sqrt{(1.73077)^2+(-0.65972)^2}$

$a=1.85224m/s^2$ .............Answer

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3 years ago