|60| ___ |-60| = < >

Cual es el resultado?/ who is the answer? -m+4-(-m)=

Debora [2.8K]

Answer:

$-m+4-(-m) = -m+4+m \\ = 4$

8 0

3 years ago

In a lab, a scientist is growing bacteria for a study. The scientist begins with a bacteria

Diano4ka-milaya [45]

Answer:

The answer is below

Step-by-step explanation:

The growth of the bacteria is in the form of an exponential growth. It is given by the formula:

$P(t)=ae^{rt}\\\\where\ t\ is\ the\ number\ of \ hours, P(t)\ is\ the \ population\ at\ t\ hours\\\and\ a=population\ at\ start$

At 2 hours, the population is 62 cells, hence:

$P(2)=ae^{2r}\\\\62=ae^{2r}\ \ .\ \ .\ \ .\ (1)$

After another 2 hours (4 hours), the population is 1 million:

$P(4)=ae^{4r}\\\\1000000=ae^{4r}\ \ .\ \ .\ \ .\ (2)\\\\Divide \ equation\ 2\ by\ equation\ 1:\\\\\frac{1000000}{62}=\frac{ae^{4r}}{ae^{2r}} \\\\16129=e^{2r}\\\\ln(e^{2r})=ln(16129)\\\\2r=9.688\\\\r=4.844$

Put r = 4.844 in equation 1

$62=ae^{2*4.844}\\\\62=16129a\\\\a=0.003844$

$P(t)=0.003844e^{4.844t}\\\\at \ start,t=0\\\\P(0)=0.003844$

4 0

3 years ago

Find the total area of the net below. 5 points each please help. Thanks! and have good day!

Vinil7 [7]

Answer:

Sorry the screenshot is black but i would like to help if you can repost, it?

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is the solution to the system of equations?

Alisiya [41]

Solve systems of equations by graphing. A system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system.

5 0

3 years ago

Read 2 more answers

Find u and v only please:

tekilochka [14]

Every two triangles are similar. Therefore the sides of triangles are in proportion.

We have the equations:

1.

$\dfrac{3}{5}=\dfrac{3+x}{20}$ cross multiply