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3 years ago

Hey I need help anyone willing to help me please . Need help on 3 and 4

Mathematics

1 answer:

Bumek [7]3 years ago

3 0

Answer:

Please see the attached images for full solution.

For question 3, the equation could have also been 3x°= 90°. However, I used ∠ sum of △ since I didnt want to assume that ∠ABC is a right angle.

Likewise for Q4, the polygon looks like a trapezium which means that the 2 horizontal lines are parallel and one could conclude that (3x +3)° +(2x +2)°= 180° (int. ∠s). But since it wasn't clearly indicated that they are parallel, I used the sum of interior angles to find x instead.

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When you roast coffee, it loses 12% of its weight. how much fresh coffee do you need in order to get 14 2/25 lb of roasted coffe

Komok [63]

Answer:

16 lb of fresh coffee.

Step-by-step explanation:

Let x pound be the amount of fresh coffee needed.

100 - 12 = 88% is equivalent to 14 2/25 of roasted coffee.

By proportion x = 14 2/25 / 88/100

= 352 / 25 * 100/88

= 35200 / 25 * 88

= 16 lb (answer).

6 0

3 years ago

Enter the unknown value that makes this statement true: ___% of 540 is 180

seropon [69]

Answer:

33.3

Step-by-step explanation:

3 0

3 years ago

A CD usually sells for $14.00. If the CD is 10% off, and sales tax is 6%, what is the total price of the CD, including tax?

Vikki [24]

10% of 14 =1.4
14-1.4=12.6
6% of 14=0.84
12.6+0.84= 13.45

7 0

3 years ago

The fruity snack company is packaging fruit loop cereal in small snack bags each snack is to weigh 30 grams with a tolerance of

katrin [286]

9514 1404 393

Answer:

|w -30| > 1.6
(-∞, 28.4) U (31.6, ∞)

Step-by-step explanation:

1. The snack bags will be rejected if their weight differs from 30 grams by more than 1.6 grams:

|w -30| > 1.6

2. This inequality resolves to two inequalities.

w -30 > 1.6

w > 31.6 . . . . . add 30

and

-(w -30) > 1.6

w -30 < -1.6 . . . multiply by -1

w < 28.4 . . . . . add 30

The solution in interval notation is the union of the two disjoint intervals:

(-∞, 28.4) U (31.6, ∞)

4 0

3 years ago

sarah had 28 stickers and put x number of stickers on her binded. haylee had 40 stickers and put three times as many stickers on

Mariana [72]

Answer:

Number of stickers Sarah had = 28

Number of stickers she put on her binder = x.

Number of stickers left with her = 28 - x

Number of stickers Haylee had = 40

Number of stickers she put on her locker = 3x

Number of stickers left with her = 40 - 3x

Both Sarah and Haylee had the same number of stickers left.

28 - x = 40 - 3x

=> 3x - x = 40 - 28

=> 2x = 12

=> x = = 6

Step-by-step explanation:

7 0

3 years ago