A vertical line and a horizontal line are perpendicular. Sometimes, always or never true.

Mathematics

2 answers:

cluponka [151]3 years ago

5 0

Sometimes true in a problem like that

Anna007 [38]3 years ago

3 0

Sometimes true :) hope this helped

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Jalen bought 4 bottles of water, 2 bags of cashews, and a fruit salad. The cost of the fruit salad was $5. This expression was

grigory [225]

Answer:

water bottles = 3

Step-by-step explanation:

4x + 2x + 5 = 25

1. you need to get rid of the five, so subtract it from both sides

4x + 2x = 20 2. based on the amount you paid you need to find two multiplication problems that will amount to $20 (4x3= 12 <- - water 2x4=8 <-- cashews)

underlined = cost per item

6 0

4 years ago

Read 2 more answers

Assume that x equals x (t )and y equals y (t ). Let y equals x cubed plus 4 and StartFraction dx Over dt EndFraction =2 when xe

nika2105 [10]

Answer:dy/dt(x=3)=54

Step-by-step explanation:

We know that we can write:

$\frac{dy}{dt}=\frac{dy}{dx} *\frac{dx}{dt}$

and so evaluate it as a product of functions, that is for a given value of x or t, we get that

$\frac{dy}{dt}(s)=\frac{dy}{dx} (s) * \frac{dx}{dt}(s)$ .

Now we are told that:

$1. x=x(t),\ 2.y=x^3+4,\ \frac{dx}{dt} =2,\ for \ x=3,$

whenever it happens, this means the influence of t is hidden, and we only consider the result, that is, how much is x when the derivative has the value of 2, we are not concerned for what value of t it happens, since we get all the necessary information beforehand.

Now we need to calculate

$\frac{dy}{dx}=3x^2 \rightarrow \frac{dy}{dx}(3)=3(3)^2=27$ .