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3 years ago

The scale of a map is 1:50000. A lake on the map is 6.16cm². find the actual area of the lake in hectares.

Mathematics

1 answer:

Mamont248 [21]3 years ago

6 0

Answer:

1.54 [km²].

Step-by-step explanation:

1) the given scale is for linear functions, the given area of the lake is quadratic function. According to this

2) actual area = given area *50000 *50000;

3) the given area=0.000616 [m²],

the actual area=0.000616*50000*50000=1540000 [m²] or 1.54 [km²].

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9 less than the sum of x and 5

saw5 [17]

Answer:

Given the statement:

9 less than the sum of x and 5

"Sum of x and 5" means $x+5$

" $\text{less than}$ " means subtract

then;

the statement 9 less than the sum of x and 5 becomes;

⇒ $(x+5) - 9$

⇒ $x+5-9 = x-4$

Therefore, the expression for the given statement is $(x+5) - 9$

7 0

3 years ago

Which of the following is equivalent to 7-2(x + 2) <-4 - 3(1 - x)?

puteri [66]

Answer:

2 < x

Step-by-step explanation:

7-2(x + 2) <-4 - 3(1 - x)

Distribute

7 - 2x-4 < -4 -3 +3x

Combine like terms

3 -2x < -7+3x

Add 2x to each side

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

3 < -7+5x

Add 7 to each side

3+7 < -7+7+5x

10 < 5x

Divide each side by 5

10/ 5 < 5x/5

2 < x

4 0

3 years ago

Pleaseee help, i know for sure it’s not 275

Alex777 [14]

Answer:

b, 300

Step-by-step explanation:

r^2 15^2=225

so the closest answer is 300

6 0

3 years ago

PLease help quickly!!!!!!!!

allochka39001 [22]

32k=8*4k
24=8*3

ab+ac=a(b=c)
32k+24=8(4k+3)

7 0

3 years ago

This is really easy i just dont get it

boyakko [2]

Answer:

x=1

Step-by-step explanation:

We wanna have the same amount on both sides

There are 3 circles on the left and 7 circles on the right. There are also 4 triangles. Turn into numbers...

4x+3=7

4x=7-3

x=1

We can check by substituting one

7=7

7 0

3 years ago