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3 years ago

Find the greatest common factor of 9, 21, and 42

Mathematics

1 answer:

Alex3 years ago

7 0

3 I believe is correct

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Which quadratic equation has the roots -1+4i and -1-4i

AysviL [449]

Answer:

Step-by-step explanation:

Solve the quadratic in answer choice C using the quadratic formula:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}$ .

Here a=1, b=2, and c=17.

Substitute and you'll have:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{-2+/-\sqrt{(-2)^2-4(1)(17)} }{2(1)}=\frac{-2+/-\sqrt{4-68}}{2)}$

$\frac{-2+/-\sqrt{-64} }{2}=\frac{-2+/-8i }{2}=-1+/- 4i$

6 0

3 years ago

The endpoints of a side of rectangle ABCD in the coordinate plane are at A(1,4) and

andrew-mc [135]

Answer:

Step-by-step explanation:

A(1, 4)

B(4, 1)

$m_{AB}$ = $\frac{1-4}{4-1}$ = - 1

y - 1 = - 1 ( x - 4 )

<em>y = - x + 5</em>

6 0

3 years ago

the population of a town increases at a rate proportional to its population with an initial population of 1000. The corect initi

anyanavicka [17]

Answer:

This means that the correct initial value problem for the population p(t) as a function of time is is $P(0) = 1000$

Step-by-step explanation:

The population of a town increases at a rate proportional to its population:

This means that this situation is modeled by the following differential equation:

$\frac{dP}{dt} = kP$

In which k is the growth rate.

By separation of variables, the solution is given by:

$P(t) = P(0)e^{kt}$

In which P(0) is the initial population.

Initial population of 1000.

This means that the correct initial value problem for the population p(t) as a function of time is is $P(0) = 1000$

5 0

3 years ago

Joe rolls a six-sided number cube and flips a coin. What is the probability that he rolls an odd number and flips a head on the

bogdanovich [222]

of the odd number it would be 3/6 in other words 1/2 Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find the total surface area of this triangular prism.

Irina18 [472]

Answer:

not sure but i think its 425 cm

Step-by-step explanation:

for the square i dont know

how its called in english the surface is 25×10= 250cm

and for the triangle its (25×14):2 = 175cm

so 175 + 250= 425cm

4 0

2 years ago