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3 years ago

There are approximately 2.4 million births in a country each year. Find the birth rate in units of births per minute.

Mathematics

1 answer:

irina1246 [14]3 years ago

4 0

Answer:

4.57 births per minute

Step-by-step explanation:

2.4 million/year * 1year/365days* 1day/24hours * 1hour/60minutes =

2400000/(365*24*60) = 2400000/525600= 4.566births/minute

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What is the solution to the inequality 7x + 2 < -3x + 1?

anastassius [24]

Answer:

$\Large\boxed{\sf{x < -\dfrac{1}{10} }}$

Step-by-step explanation:

In order to find the solutions, you must isolate the inequality on one side of the equation.

7x+2<-3x+1

First, you subtract by 2 from both sides.

7x+2-2<-3x+1-2

Solve.

Subtract the numbers from left to right.

7x<-3x-1

Add by 3x from both sides.

7x+3x<-3x-1+3x

Solve.

7x+3x=10x

10x<-1

Then, you divide by 10 from both sides.

10x/10<-1/10

Solve.

Divide these numbers goes from left to right.

$\Longrightarrow: \boxed{\sf{x < -\dfrac{1}{10} }}$

Therefore, the final answer is x<-1/10.

I hope this helps, let me know if you have any questions.

5 0

2 years ago

6 pieces of wire each measure 9cm find the total length of the pieces in mm

Natali5045456 [20]

(2/7) / 6

(2/7) * (1/6) = 2/42 = 1/21 m

6 0

3 years ago

A survey asked people if they were aware that maintaining a healthy weight could reduce the risk of stroke. A 97% confidence int

Natalija [7]

Answer:

97% confidence interval for the survey is between a lower limit of 0.45 and an upper limit of 0.67

Step-by-step explanation:

Confidence Interval is given by the mean + or - error margin

The lower limit of the confidence interval is found by subtracting the error margin from the mean.

The upper limit is obtained by adding the error margin to the mean.

The interpretation is that the mean is between 0.45 and 0.67

5 0

3 years ago

Please help ill mark brainliest

tia_tia [17]

Answer:

x=4 y=1

Step-by-step explanation:

given equation

x+y=5

so x= 5-y.......(i)

and

x-2y=2

so x= 2+2y........(ii)

then

5-y=2+2y

therefore y=1

and x=4

5 0

3 years ago

Read 2 more answers

Sketch the curve with the given vector equation. Indicate with an arrow the direction in which t increases. r(t) = 4 cos(t)i + 4

slega [8]

Answer:

The equation to this question is " $x^2+y^2=16$ "

Step-by-step explanation:

Given value:

$\to r(t) = 4 \cos (t)i + 4 sin(t)j + k\\where \\\\\to x(t)= 4 \cos t\\\to y(t) = 4 \sin t\\\to z(t)=1\\$

$\to x^2+y^2= 16 \cos^2 t +16 \sin^2 t\\\\\to x^2+y^2= 16 (\cos^2 t +\sin^2 t)\\\\\therefore (\cos^2 t +\sin^2 t =1)\\\\\to x^2+y^2= 16 (1)\\\\\to x^2+y^2= 16\\\\\to z=1$

So, the curve $r(t) = 4 \cos (t)i + 4 sin(t)j + k$ is basically a circle, which is defined in the attachment file.

7 0

3 years ago