I need help! Please?

Mathematics

2 answers:

likoan [24]3 years ago

5 0

Answer:

2.59

Step-by-step explanation:

Simple! You must divide the number of pounds by the cost to get the price for 1 pound. Or, set up a proportional table:

7.77 = x amount of dollars

3 = 1

Or:

Divide 7.77 by 3:

7.77 / 3 =2.59.

joja [24]3 years ago

4 0

Answer:

Its a

Step-by-step explanation:

Just divide any one of the cost with the pounds. Ex. 20.72/8=2.59

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How do you simplify 80/36

Black_prince [1.1K]

Answer:

20/9

Step-by-step explanation:

Find the GCD (or HCF) of numerator and denominator

GCD of 80 and 36 is 4

Divide both the numerator and denominator by the GCD

80 ÷ 4

36 ÷ 4

Reduced fraction: 20/9

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3 years ago

What is the halflife

blagie [28]

To model half-life, use the formula $A(t)=A_0 (\dfrac{1}{2})^{ \frac{t}{t_{1/2}}$ . Here, $A(t)$ is the amount remaining after a length of time $t$ . $A_0$ is the amount that you start with. $t_{1/2}$ is the half-life. You plug in 50 for $t_{1/2}$ , 10 for $A_0$ , and 25 for $t$ . You get $A(t)=10( \frac{1}{2})^{25/50} = 10( \frac{1}{2})^{1/2} = 7.07 \ grams$ .