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2 years ago

-5 5/7 +8 +( -3 2/7)

2 answers:

4 0

Step 1: Seperate the mixed numbers from their fractions.
$- 5 - \frac{5}{7} + 8 - 3 - \frac{2}{7}$
Step 2: Add -5 and -3. The sum of that is -8, thus we have an additive inverse. 8 and -8 cancel out, becoming a 0.
$- 8 - \frac{5}{7} + 8 - \frac{2}{7} = - \frac{5}{7} - \frac{2}{7}$
$\frac{ - 5 - 2}{7} = \frac{ - 7}{7} = - 1$
Therefore, the answer is -1

posledela2 years ago

4 0

Answer:

-4+9 ------121222

Step-by-step explanation:

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*pls help* <br> solve 7,8,9, and 10 for brainliest

ivanzaharov [21]

Answer:

#8 : x=15−y

#9: $\frac{c}{b} -\frac{ax}{b}$

#10: y=2A−x

#7: T= $\frac{P}{IR}$

Step-by-step explanation:

7 0

2 years ago

Justin Verlander of the Astros threw a pitch 100 miles per hour. How many seconds did it take to get to home plate. The plate is

castortr0y [4]

It will take 0.4 seconds to get to the home plate.

Given:

The speed of the pitch thrown by Justin is 100 miles per hour

The distance of home plate from the pitching rubber is 60.5 feet

To find:

The time taken by a pitch to reach the home plate

Solution:

The distance home plate from the pitching rubber = d = 60.5 feet

$1 mile = 5280 feet\\1 foot=\frac{1}{5280} mile\\60.5 feet=60.5 \times \frac{1}{5280} mile=\frac{60.5}{5280}miles$

The speed of pitch thrown by Justin = s = 100 miles/hr

The time taken by a pitch to reach the home plate = t =?

The speed of the moving object is given by dividing the distance covered from the time taken to cover that distance.

$Speed=\frac{Distance}{Time}\\s=\frac{d}{t}\\100 miles/hr=\frac{\frac{60.5}{5280}miles}{t}\\t=\frac{60.5}{5280}miles\times \frac{1}{100 miles/hr}\\= 0.000114583 hr$

In an hour there are 3600 seconds, then in 0.000114583 hours will be:

$1 hour=3600 seconds\\=0.000114583 \times 3600=0.4124988 s\approx 0.4 s$

It will take 0.4 seconds to get to the home plate.

Learn more about conversions here:

brainly.com/question/24530464

brainly.com/question/17743460

5 0

2 years ago

A group of students organized a car wash to raise money for a local charity. The students charged $5.00 for each car they washed

Gala2k [10]

The students will earn $180 by washing cars for 9 hours.

In 3 hours the students will earn...

$5 x 12 = $60

5 dollars x 12 cars = 60 dollars

So in 3 hours the group of students will earn $60

In 9 hours the students will earn...

$60 x 3 = $180

Since the students will earn $60 per every 3 hours, you multiply $60 with 3 because if you divide 9 hours by 3 hours you will get 3. The answer you get by multiplying 60 by 3 is 180. Therefore the students can earn $180 from washing cars.

I hope this helps!

3 0

3 years ago

Solve b <br> 3b / 7-1 = 5

ruslelena [56]

Answer:

b= 2 over 7

Step-by-step explanation:

exact form b= 2 over 7

decimal form b= 0.285714

7 0

3 years ago