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3 years ago

Convert the mixed number 7 4/7 to a mixed decimal and round the nearest thousand

2 answers:

8 0

Using a calculator, you can find out that $\sf{ \frac{4}{7}\approx 0.571428571 \approx.571$

and so that means $\sf{ 7\frac{4}{7}\approx 7.571428571 \approx 7.571$

so your answer is

$\sf{ 7\frac{4}{7} \approx \huge{\boxed{7.571}}$

GalinKa [24]3 years ago

3 0

$7\frac47\approx7.57143\approx\boxed{7.571}$

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Which system of inequalities has a solution set that is a line?

Korolek [52]

We're going to solve each of the systems to determine the solution.

System $1$

$x+y \geq 3\\ x+y \leq 3$

using a graph tool

the solution is the line $x+y=3$

see the attached figure N $1$

System $2$

$x+y \geq -3\\ x+y \leq 3$

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the solution is the shaded area

see the attached figure N $2$

System $3$

$x+y > 3\\ x+y < 3$

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see the attached figure N $3$

System $4$

$x+y > -3\\ x+y < 3$

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the solution is the shaded area

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therefore

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System $1$ 

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3 years ago

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What is the common difference of the arithmetic sequence graphed below?

sp2606 [1]

Answer:

Option D 2 is correct...hope it helps:)

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2 years ago

On a given planet, the weight of an object varies directly with the mass of the object. Suppose that an object whose mass is 7 k

Airida [17]

Answer:

21 N

Step-by-step explanation:

let mass be m and weight be w

Given w varies directly with m then the equation relating them is

w = km ← k is the constant of variation

To find k use the condition m = 7 , w = 49 , then

49 = 7k ( divide both sides by 7 )

7 = k

w = 7m ← equation of variation

When m = 3 , then

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2 years ago

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Svetach [21]

A+b > c as in the side lengths

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3 years ago

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Please help me with #7

Dominik [7]

Step-by-step answer:

This is a regular heptagon, means it has 7 congruent sides and 7 congruent vertex angles.

To work with polygons, there is a very important piece of information that you must know to solve the majority of related problems.

This is:

sum of exterior angles of polygons = 360 degrees.

If you don't remember the 360 degrees, think of the sum of exterior angles of an equilateral triangle, which is 3*(180-60)=3*120=360! It works!

For a regular heptagon, c = 360/7=51.43 degrees approx.

This means that each vertex angle measures

vertex angle = 180-c

So since 2d+the vertex angle = 360, we have

2d+(180-c)=360

solve for d:

2d=360-(180-c)=180+c

d=(180+c)/2=90+c/2=115.71 degrees. (approx.)

8 0

3 years ago