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3 years ago

Hello! I need help with this question

Mathematics

1 answer:

Korolek [52]3 years ago

8 0

Each min is =0.75$
So 5$ can talk 5$/0.75$ =6.6667 min
First option

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X+2y=-5<br> y=x+2<br><br> solve x and y

bagirrra123 [75]

X+2y=-5. Y=x+2
X+2(x+2)= -5
X+2x+4= -5
3x+4= -5
3x= -9
X= -3

Y= x+2
Y= (-3)+2
Y= -1

5 0

3 years ago

What is the equation, in standard form, of a parabola that models the values in the table?

Marizza181 [45]

Answer:

Do I do the answer in standard form or the question #

6 0

3 years ago

1.0<br> Im in need for help..

Rom4ik [11]

Answer:

$3200

Step-by-step explanation:

i had the answer but wanted to make sure

when added up everything equals 273,900

-700

--------

273,200

his networth is 270,000 that means when you subtract it from the 273,200 you are left with 3,200

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3 years ago

A particle moves on the circle x2 y2=25 in the xy-plane for time t≥0. At the time when the particle is at the point (3,4), dxdt=

stiks02 [169]

The movement of the particle on the circle is its displacement.

The value of dy/dt at this time is -9/2.

<h3>What is the differentiation?</h3>

Differentiation is a process, in Maths, where we find the instantaneous rate of change in function based on one of its variables.

A particle moves on the circle x^2 + y^2=25 in the XY-plane for time t≥0. At the time when the particle is at the point (3,4), dxdt=6.

The equation of the circle is given as:

$\rm x^2 + y^2=25$

Differentiate with respect to time

$\rm 2x \times \dfrac{dx}{dt}+2y \times \dfrac{dy}{dt}=0$

Substitute all the values in the equation

$\rm 2x \times \dfrac{dx}{dt}+2y \times \dfrac{dy}{dt}=0\\\\2(3) \times 6+2(4)\times \dfrac{dy}{dt}=0\\\\ 6 \times 6+8 \times \dfrac{dy}{dt}=0\\\\ 36+8\times \dfrac{dy}{dt}=0\\\\ 8\times \dfrac{dy}{dt}=-36\\\\ \dfrac{dy}{dt}= \dfrac{-36}{8}\\\\ \dfrac{dy}{dt}= \dfrac{-9}{2}$

Hence, the value of dy/dt at this time is -9/2.

Learn more about differentiation here;

brainly.com/question/19385433

#SPJ4

6 0

2 years ago

If f(x) = + 8, what is f(x) when x = 10?

Crank

Answer:

We know that x = 10. But, we don't know what f is. In order to find f, we would divide. To divide we would use this formula: 8 ÷ 10. This equals 0.8 or 8 tenths. Now, we know what our <em>f</em> value is. It's 0.8! To double check, use a calculator and type in: 10*0.8 and see if the answer is 8. (Please mark brainliest! :D)

4 0

3 years ago