3 years ago

What is the solution to the following system of

Mathematics

1 answer:

Rufina [12.5K]3 years ago

5 0

Answer:

i think the correct answer of these qusion is -2,3

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120=10×m<br><br>what is m i need help

Vladimir [108]

120=10x12

120/10=12

Hope this helps! :)

3 0

4 years ago

Read 2 more answers

a spherical balloon is being inflated so that the radius is increasing at a rate of 3 cm/sec. find the rate at which the volume

neonofarm [45]

Answer: 1200pi cubic cm per sec

========================================

Work Shown:

dr/dt = 3 is the rate of change of the radius

V = (4/3)pi*r^3 ..... volume of a sphere

dV/dt = (4/3)*3*pi*r^2*dr/dt ... chain rule

dV/dt = 4*pi*r^2*dr/dt

dV/dt = 4*pi*r^2*3

dV/dt = 12*pi*r^2

dV/dt = 12*pi*10^2 ... plug in r = 10

dV/dt = 1200pi

3 0

3 years ago

The difference between the roots of the quadratic equation x2+x+c=0 is 6. Find c.

NemiM [27]

We have that
$x_{1} - x_{2} = 6$
Let y be the first root, then y - 6 will be the second one. Since both roots make the quadratic equation equal to 0, we have that:
$y^{2} + y + c = (y - 6)^{2} + (y - 6) +c$
Solve for y:
$y^{2} +y +c = y^{2} - 12y + 36 + y - 6 +c \\ y + 12y - y = 30 \\ y = \frac{5}{2}$
Plug in y = 5/2 into original quadratic equation and solve for c:
$( \frac{5}{2}) ^{2} + \frac{5}{2} +c = 0 \\ c= - \frac{5}{2} - \frac{25}{4} \\ c = - \frac{35}{4}$
So, the answer is c = -35/4

6 0

4 years ago

Help me pleasee :) :)

andreyandreev [35.5K]

I know that one is obtuse and acute

8 0

3 years ago

I will pick the brainiest answer!!! Thanks! :)

madam [21]

Answer:

For the first picture:

1) Right angle

2)Acute

3)Obtuse

For the second picture:

W) Acute

Step-by-step explanation:

3 0

3 years ago