Plz help and show your work. (Ignore what I wrote)

Mathematics

1 answer:

Sergio039 [100]3 years ago

7 0

First, find the total number of ounces:

(28)(16) = 448 oz (16oz in a lb)

Then divide 448 by 8

448/8 = 56 days of food

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Ms. Gallegos burns 236 calories while riding her bike each hour. She wants to burn more than 590 calories riding her bike at the

olga2289 [7]

Answer:

T > 2.5

Explaination -

t > 2.5

t < 2.5

t > 0.4

t < 0.4

Here it is given that Gallegos burns 236 calories riding her bike each hour.

She wants to burn more than 590 calories riding her bike at the same rate.

Let the time required = t hours

236t > 590

⇒ t > 590/236

⇒ t > 2.5

<em>Therefore, the answer is </em> t > 2.5

7 0

3 years ago

If ab = 9 and a² + b² = 81, then (a+b)² = ?

Andre45 [30]

Answer:

Step-by-step explanation:

Through some clever algebra, we can combine our first two equations using the fact that

$(a+b)^2=a^2+2ab+b^2$

We have the a² and the b² in the equation $a^2+b^2=81$ , and we <em>almost </em>have a 2ab in the equation $ab=9$ . To get that 2ab, we can simply double both sides of the first equation to get $2ab=18$ . From there, we'll add the first two equations together, giving us the summed equation