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zepelin [54]
2 years ago
14

X2 - 49 = 0 solve for x

Mathematics
1 answer:
Bogdan [553]2 years ago
8 0

x^2 - 49 = 0

Add 49 to both sides:

x^2 = 49

Take the square root of both sides:

X = 7

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Suppose that an individual has a body fat percentage of 16.4% and weighs 129 pounds. How many pounds of his weight is made up of
Olin [163]

Answer:

16.4 % of 129

16.4/100 × 129 = 21.2

21.2 pounds is made up of fat

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-3(-5)(-4)<br><br> i need help
tamaranim1 [39]

Answer:

If you are asking -3 times -5 times -4, then the answer -60

Step-by-step explanation:

-3*-5=15

15*-4=-60

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Following e.g. C, how do you do D? 30 points
mars1129 [50]

Answer:

x=(log(5/4))/(log(4))

Step-by-step explanation:

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I REALLY need help with these 3 questions plz!!!!
Tanzania [10]

Answer:

6. No. See explanation below.

7. 18 months

8. 16

Step-by-step explanation:

6. To rewrite a sum of two numbers using the distributive property, the two numbers must have a common factor greater than 1.

Let's find the GCF of 85 and 99:

85 = 5 * 17

99 = 3^2 + 11

5, 3, 11, and 17 are prime numbers. 85 and 99 have no prime factors in common. The GCF of 85 and 99 is 1, so the distributive property cannot be used on the sum 85 + 99.

Answer: No because the GCF of 85 and 99 is 1.

7.

We can solve this problem with the lest common multiple. We need to find a number of a month that is a multiple of both 6 and 9.

6 = 2 * 3

9 = 3^2

LCM = 2 * 3^2 = 2 * 9 = 18

Answer: 18 months

We can also answer this problem with a chart. We write the month number and whether they are home or on a trip. Then we look for the first month in which both are on a trip.

Month                Charlie          Dasha

1                          home             home

2                          home             home

3                          home             home

4                          home             home

5                          home             home

6                         trip                home

7                          home             home

8                          home             home

9                          home             trip

10                         home             home

11                         home             home

12                         trip               home

13                         home             home

14                         home             home

15                         home             home

16                         home             home

17                         home             home

18                         trip                 trip

Answer: 18 months

8.

First, we find the prime factorizations of 96 an 80.

96 = 2^5 * 3

80 = 2^4 *5

GCF = 2^4 = 16

Answer: 16

7 0
3 years ago
A fireworks store is offering 15% off all fireworks. If you come to the store on the fourth of July, you get an extra 15% off th
MrRa [10]
15% off all fireworks
extra 15% off on July Fourth.

$112.25*.15= 16.8375
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95.1625-14.274375= 80.888125

$80.89 is the price.
3 0
2 years ago
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