The answer is: "39 points" .
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Explanation:
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" x/ 50 = 78/100 " ; in which "x" equals the number of points needed.

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To solve for "x" ;
_______________________________________________________

Look at the denominators: 50 * (what value?) = 100.

→ "100 ÷ 50 = 2" .

→ So; "50 * 2 = 100" ;

So, let us look at the numerators:

x * 2 = 78 ;

↔ 2x = 72 ;

Divide each side of the equation by "2" ; to isolate "x" on one side of the equation ; and to solve for "x" ;
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→ 78 ÷ 2 = 39 ;

The answer is: "39 points" .
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4 0

3 years ago

A 17 foot piece of string is cut into two pieces so that the longer piece is 5 feet longer than twice the shorter piece. If the

Vsevolod [243]

Answer:

Shorter piece= 4 ft, longer piece= 13 ft

Step-by-step explanation:

If shorter piece is x

Longer pc is 2x + 5

Together they make 17 feet

So x + 2x + 5 = 17

3 x + 5 = 17

3x = 17 - 5 = 12

3x = 12

X = 12/ 3 = 4

So shorter pc is 4 feet

Longer pc is 2 x + 5

= (2 x 4) + 5

= 8 + 5 = 13

7 0

2 years ago

Please tell how to write an expression for this

BARSIC [14]

Answer:

N is 7 x 7, because there is a order which is the term and number are like being multiplied by the same number for example "1 x 1 =1, 2 x 2 = 4" and so on

Step-by-step explanation:

5 0

3 years ago

on a map where each unit represents 100 miles , two airports are located at p(1,17) and q(12,10) what is the distance to the nea

dlinn [17]

Answer:

849 miles

Step-by-step explanation:

d = [(12-1)^2+(10-17)]^(1/2)

d = 8.49*100 = 849 miles.

7 0

3 years ago