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EleoNora [17]
3 years ago
9

Olive estimated it will take about 50 gallons of gas for the whole trip. Use the he equation to determine how much we will spend

on gas. Equation c= 3.5g
Mathematics
1 answer:
Westkost [7]3 years ago
8 0

Answer:

$175

Step-by-step explanation:

3.5 x 50 = $175

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A teacher needs 256 lengths of string cut to 40cm each. If balls of string are 30M long, how many balls are needed?
Otrada [13]
First you need to work out how much string is needed -
256 pieces needed x 40cm each:
256 x 40 = 10240cm

Then, convert to metres (100cm = 1m)
10240 / 100 = 102.4m

Then, you work out how many balls are needed:
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4 0
3 years ago
Solve using the quadratic equation -4x² + 7x + 5 = 0​
Luda [366]

Answer:

x=-0.544727

x=2.294727

Step-by-step explanation:

Given quadratic equation to solve:

  • -4x²+7x+5=0

To solve, use the quadratic formula

x= -b ±  b² - 4ac / 2a

Substitute your values for a, b, & c and solve

x= -7 ± 7² - 4·(-4)·5 / 2·(-4)

x= -7 ± 49 - -80/-8

x= -7 ± 129/-8

Then, reduce the problem

x= -7/-8 ± 129/-8

x=-0.544727

x=2.294727

4 0
2 years ago
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