Help With Math Homework?? Please Help, 10 Pts?

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1. The height of the model rocket is 4.5% of the height of the actual rocket. The model is 1.2 meters high. How high is the actual rocket?
2. Karina bought a camera with a regular price of $89. It was on sale at a 20% discount. There was a 7% tax on the price. How much did Karina spend to buy the camera?
3. Quadrangle College has space for 580 students in the first-year class. The college estimates that 65% of the students who are admitted will actually attend the college. How many students should be admitted?
4. Tamika had a 4 by 7in. Photograph enlarged. Both length and width were increased to 130% of the original size. Find the perimeter of the enlarged photograph.
5. A test consists of 15 multiple-choice questions, 10 true or false questions, and 10 fill in the blank questions. Maria got 9 questions wrong. What percent of her answers were correct?

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2 Responses to “Help With Math Homework?? Please Help, 10 Pts?”

  1. Mick says:

    1. (4.5%)*(1.2m) = (.045)*(1.2)m = 0.054m = 5.4 cm = 54 mm.
    2. ($89)*(100%-20%)*(1+7%) = ($89)*(0.8)*(1.07) = $76.184 … or $76.18 if rounded to dollars and cents.
    3. 580/65% = 580/0.65 = 892.307682, but I don’t know what 0.307682 people look like, so go with 892.
    4. New length = 4*130% = 5.2 in. New height = 7*130% = 9.1. P = 2*5.2 + 2*9.1 = 10.4 + 18.2 = 28.6.
    5. Total Q’s = 15 + 10 + 10 = 35. 9 wrong = 35-9 = 26 right. 26/35 = 74%.

  2. Cate says:

    1) 26.67 meters
    2) $71.27
    3)377 students
    4)5.2 by 9.1 inches
    5) 25% were wrong

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