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3 years ago

Need help on this math study guide

Mathematics

1 answer:

photoshop1234 [79]3 years ago

6 0

2 terms on left side, 3 on right side

All variables count as coefficients, so they’d be 8m, k, and -16k

10.

The constants are just numbers on their own, or without a variable next to it. Here it’d be 10 and -4

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2x+7=20 can someone please help with this

salantis [7]

Answer:

6.5

Step-by-step explanation:

first subtract 7 from both sides

2x=13

next divide both sides by 2

x=6.5

3 0

3 years ago

Read 2 more answers

Jennifer and Kamlee are walking to school. After 20 minutes, Jennifer has walked 4/5 miles. After 25 minutes, Kamlee has walked

Nimfa-mama [501]

Answer:

Jennifer's speed is 2.4 miles/hour

Kamlee's speed is 2 miles/hour

Step-by-step explanation:

To find their speed,

Speed can be determined from the formula below,

$Speed = \frac{Distance}{Time}$

Also, to determine the speed in miles per hour (miles/hour), we will convert the time spent by each of them to hour (NOTE: 60 minutes = 1 hour)

For Jennifer,

Distance = 4/5 miles

Time = 20 mins (Convert to hour)

∴Time = (20/60) hour = 1/3 hour

Hence,

$Speed = \frac{Distance}{Time}$

$Speed = \frac{4/5 miles}{1/3hour}$

$Speed = \frac{4}{5} \times \frac{3}{1}$

$Speed = \frac{12}{5}$

$Speed = 2.4 miles/hour$

Hence, Jennifer's speed is 2.4 miles/hour

For Kamlee,

Distance = 5/6 miles

Time = 25 minutes (Convert to hour)

Time = (25/60) hour = 5/12 hour

Hence,

$Speed = \frac{Distance}{Time}$

$Speed = \frac{5/6miles}{5/12 hour}$

$Speed = \frac{5}{6} \times \frac{12}{5}$

$Speed = 2 miles/hour$

Hence, Kamlee's speed is 2 miles/hour

4 0

2 years ago

Please help and thank you

Scilla [17]

The answer is B.

Hope this helps!

6 0

2 years ago

Can someone answers this question please master it correctly if it’s corect I will mark you brainliest

Lostsunrise [7]

Answer:

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

An object's speed decreases by 5% for each minute that it is slowing down. Which of the

Harlamova29_29 [7]

Answer: 79%

Step-by-step explanation:

min —> 30 mins because half an hour is 30 mins.

(1 - 0.5)^30 = .214638..

1 - .214638 = .78536

round that to the closest percent equals 79%

6 0

2 years ago