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3 years ago

You have learned three ways for solving systems of equations: graphing, substitution and elimination.

Mathematics

1 answer:

ra1l [238]3 years ago

6 0

Answer:

Elimination

Step-by-step explanation:

Graphing takes too long, substitution can sometimes complicate things quickly, therefore I would use elimination as my prime method of solving systems of equations.

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A cheetah can run about 68miles per hour. how fast can it run in meters per minute? use 1mi= 1609m

Olin [163]

Answer:

Approximately 26,82 meters per minute

Step-by-step explanation:

If 1 mile = 1609 meters, then the cheetah runs 1609 in 60 minutes, and we want to find the x meters it runs in 1 minute.

We do x = (1 * 1609) / 60 = 26,82 meters per minute ( approximately )

8 0

3 years ago

Read 2 more answers

Pia printed 2 maps of a walking trail. The length of the trail on the first map is 8 cm. The length of the trail on the second m

Marianna [84]

The scale factor from the first map to the second map can be determined by:

scale factor = (length of trail in first map) / (length of trail in second map)

8 cm / 6 cm = 1.33

The landmark on the first map is a triangle with side lengths of 3mm, 4mm, and 5mm.

3mm = 3 * 1.33 mm = 3.99mm
4mm = 4 * 1.33 mm = 5.32mm
5mm = 5 * 1.33 mm = 6.65mm

5 0

2 years ago

The population of a city is 50,000. It is increasing at an annual rate of 3%. What is the

vlada-n [284]

The population will be 56,275 people.
You can see the picture for the formula.

3 0

3 years ago

Read 2 more answers

find the sum of the first 20 terms of an arithmetic sequence with a first term of -14 and a comman difference of 4

timama [110]

Answer:

480

Step-by-step explanation:

Sn = n÷2 × (2a + (n-1)d)

n = 20 a = -14 d = 4

S20 = 10 × (-28 + 19 × 4) = 480

7 0

3 years ago

MIDDLE SCHOOL MATH- 4 QUESTIONS

Contact [7]

Answer:

( I am assuming that these are all fractions)

1. 14 $\frac{4}{7}$

2. 8

3. $\frac{4}{15}$

4. 5 $\frac{8}{11}$

Step-by-step explanation:

1. First you have to convert 15 into a fraction but it must have the same denominator causing the equation to look like 105/7 - 3/7= 102/7. But you cannot just leave the fraction like that it must be simplified 14 $\frac{4}{7}$

2. Three-fifths of an hour is 36 minutes. You would next multiply 5 by 60 which would the hours into minutes 5 x 60 = 300. You would then divide 300 by 36 which would give you 8.3333333333, which I just simplified it to 8

3. In order for you to multiply a fraction you would first multiply the top then the bottom. 12 x 6= 72, 15 x 18= 270. The fraction would look like 72/270 which is simplified to $\frac{4}{15}$ .

4. First I changed the fractions into improper fractions causing the fraction to look like 36/8 x 14/11 (I got these answers by 8 by 4 then adding 4, then for the next fraction I multiplied 11 by 1 then added 3.) 36 x 14= 1224, 11 x 8= 88 the fraction would look like 1,224/88 you would simplify to 5 $\frac{8}{11}$

Hope this helps

Please tell me if I made any mistakes I enjoy learning from them.

6 0

2 years ago