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3 years ago

the stove and the freezer weigh at least 260kg. the stove weighs 115 kg. How much would the freezer weigh?

Mathematics

2 answers:

Aleks [24]3 years ago

7 0

About 145 I gonna guess I dont know if that's right

saveliy_v [14]3 years ago

7 0

Answer:

freezer weight = at least 145 kg

Step-by-step explanation:

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3 years ago

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djyliett [7]

-3=7x-10. -7x=3-10. X=1. You can check the answer by plugging in the numbers.

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3 years ago

If the value of the discriminant is 10, then a quadratic equation has...

Black_prince [1.1K]

Answer:

two distinct solutions

Step-by-step explanation:

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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), dx/dt

yaroslaw [1]

Answer:

$\displaystyle y'=-\frac{9}{2}$

Step-by-step explanation:

<u>Differentiation</u>

We have a relationship between x and y as follows:

$x^2+y^2=25$

Both variables depend on time t for t≥0.

Differentiating with respect to time:

$(x^2)'+(y^2)'=(25)'$

Applying the derivative of a power function:

$2xx'+2yy'=0$

Recall the derivative of a constant is 0.

Dividing by 2:

$xx'+yy'=0$

Solving for y':

$\displaystyle y'=-\frac{xx'}{y}$

At some specific time, we have:

x=3, y=4, dx/dt = x' = 6. Substituting:

$\displaystyle y'=-\frac{3\cdot 6}{4}$

Operating:

$\displaystyle y'=-\frac{18}{4}$

Simplifying:

$\mathbf{\displaystyle y'=-\frac{9}{2}}$

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3 years ago