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marshall27 [118]
3 years ago
10

terry opened a savings account in December with $132 and saved $27 each month beginning in January the value of terrys account i

n july, then calculate the amount and evaluate the reasonableness of your estimate
Mathematics
1 answer:
liq [111]3 years ago
4 0
Let S be the amount in a savings account. 
Let m be the number of months.

General equation
S = 132 + 27m

Specific question
July is the 7th month of the year including both January and July.
S = 132 + 7*27
S = 132 + 189
S = 321

Reasonableness?
Good question. You could estimate an answer.
Start with 150 dollars and say that you add 25 a month.
7 * 25 = 175
S = 150 + 175 = 325 All of this was done in my head. Since the exact answer obtained using the formula is 321, I think that's pretty reasonable using my estimate is a guide.
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we are given

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\sqrt{a} *\sqrt{b}=\sqrt{a*b}

we get

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\sqrt{30} *\sqrt{610}=\sqrt{3*61*100}

we can  also write as

\sqrt{30} *\sqrt{610}=\sqrt{100}*\sqrt{3*61}

\sqrt{30} *\sqrt{610}=10\sqrt{183}............Answer


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Strike441 [17]

Step-by-step explanation:

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\dfrac{BC}{AB} = \dfrac{3}{5}

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AE

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koGiven that the lengths of the sides are;

\overline {AB}

AB

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\overline {AC}

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\overline {AD}

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\overline {DE}

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\overline {AE}

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The ratios are;

\dfrac{Length \ opposite \ \angle A}{Hypothenus} = \dfrac{BC}{AB} = \dfrac{12}{20} = \dfrac{3}{5}

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=

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\dfrac{Length \ adjacent\ \angle A}{Hypothenus} = \dfrac{AC}{AB} = \dfrac{16}{20} = \dfrac{4}{5}

Hypothenus

Length adjacent ∠A

=

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AC

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16

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\dfrac{Length \ opposite \ \angle A}{Length \ adjacent \ \angle A} = \dfrac{BC}{AC} = \dfrac{12}{16} = \dfrac{3}{4}

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\dfrac{Length \ opposite \ \angle A}{Hypothenus} = \dfrac{DE}{AD} = \dfrac{6}{10} = \dfrac{3}{5}

Hypothenus

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10

8

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\dfrac{Length \ opposite \ \angle A}{Length \ adjacent \ \angle A} = \dfrac{DE}{AE} = \dfrac{6}{8} = \dfrac{3}{4}

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4 0
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9514 1404 393

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