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diamong [38]
2 years ago
7

Write the expression in expanded form that is equivalent to 3(7d +4e)

Mathematics
2 answers:
pickupchik [31]2 years ago
4 0

Answer:

21+4

Step-by-step explanation:

3 times 7=21

3 times4=12

21d+4e

musickatia [10]2 years ago
3 0

Answer:

21d+12e

Step-by-step explanation:

I'm pretty sure thats it if its expanding.

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7. <u>You have $367.50 after two years.</u>

<em>Start by converting 2.5% into a decimal (divide by 100) and multiplying by 350 to find the rate of interest per year.</em>

<em>350(0.025) = 8.75</em>

<em>Since it's for two years, multiply by two. </em>

<em>8.75 x 2 = 17.5.</em>

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<em>350 + 17.5 = 367. 5, or $367.50 when converted back to money. </em>

8. <u>The annual interest rate is 2.4%</u>

<em>find the interest rate per year: </em>

<em>120/2.5 = 48 dollars per year. this is the interest amount, we want to find the interest rate. To do this, find what % of 2000 that 48 is equal to. </em>

<em>Set up a system of equations and cross multiply.</em>

<em />\frac{48}{2000} = \frac{x}{100}<em />

<em>2000x = 48(100) > 2000x = 4800</em>

<em>2000</em><em>/2000</em><em>x = 4800</em><em>/2000 > </em><em>x = 2.4</em>

<em>So, the interest rate is 2.4%. </em>

9.  <u>the interest paid is $300 after six months, and $600 after a year.</u>

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10. <u>four years.</u>

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<em>200(0.035) = $7/year</em>

<em>Remember that value. Subtract needed from current.</em>

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Step-by-step explanation:

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