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3 years ago

Which equation has a solution of x = 13?

Mathematics

2 answers:

Pepsi [2]3 years ago

4 0

Answer:

x-10=3

Step-by-step explanation:

aniked [119]3 years ago

3 0

Answer: x-10=3

Step-by-step explanation:

The answer is b or, if it shows different its the second option x-10=3

Got it right on edge 100%

Hope I helped.

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As an estimation we are told 5 miles is 8 km.<br>Convert 52 km to miles.

11111nata11111 [884]

Answer:

83.2

Step-by-step explanation:

Given, 5 miles is 8km.

So, 1 mile will be (8/5) km.

Now, 52 miles will be (8/5) x 52= 83.2

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4 0

3 years ago

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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

Which inequality best represents the graph? O A. 2x + y = 6 O B. x + 2y 6 O c. 2r- y< 6 O D. 2x - y > -6 E. 2x + y26

Misha Larkins [42]

Answer:

It would be A

Step-by-step explanation:

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3 years ago

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scZoUnD [109]

Answer:

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2 years ago

Tiffany is solving an equation where both sides are quadratic expressions. She sets each quadratic equation equal to y and graph

Lapatulllka [165]

Answer:

Step-by-step explanation:

There are 3 possibilities for the graph as shown in the figure.

(a) having zero intersection

(b) having one intersection point (touching point)

So, the greatest possible number of intersections for these graphs is 2 as shown in figure (c).

3 0

3 years ago

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