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3 years ago

What is the value of the expression below? [(3 • (-5)) - 10] = |2 + (-7)|

Mathematics

1 answer:

ivolga24 [154]3 years ago

3 0

Answer: -30

Step-by-step explanation:

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Is 3x+15=3(x+5) a infinite solution one solution or no solution

aniked [119]

Answer:

Step-by-step explanation:it is infinite solution because 15 is equal to 15 if it was like 15=13 it is no solution

7 0

3 years ago

Read 2 more answers

Grace worked from 7:00 am to 6:30 pm. she gets paid $13 per hour and “time and a half” for any hours over 8. how much did she ge

Marrrta [24]

Hours worked between 7:00 am and 6:30 pm
1830-700= 11 hours and 30 minutes.
Pay for the first 8 hours;
8*13 hours
=$104
Pay for the remaining 4 hours and 30 minutes;
4.5*18.5
=<span>$ 83.25
</span>Total pay;
=<span>$187.25</span>

4 0

3 years ago

Please answer by 9:00 to 9:15 I need help quickly

notka56 [123]

Answer:

There are 250 students.

Step-by-step explanation:

I reasoned....

If 24% purchased their lunch, then 76% brought their lunch -- because 100% (the total) - 24% = 76%.

So, I set up this up to find the missing number:

190 x

------ = ------

76% 24%

190 x 24 = 4,560

4,560 / 76 = 60

So, x = 60 students, which represents the 24% of students who purchased their lunch.

190 + 60 = 250

3 0

3 years ago

Help with this math

Zepler [3.9K]

Answer:

4,3

Step-by-step explanation:

6 0

3 years ago

Dale travels from city A to city B to city C and back to city A. Each city is exactly 120 miles from the other two. His average

Ivahew [28]

Answer:

$average\ speed = 36\ mi/hr$

Step-by-step explanation:

Given:

Each city is exactly 120 miles from the other two.

Average rate from city A to city B = 60 mi/hr

Average rate from city B to city C = 40 mi/hr

Average rate from city c to city A = 24 mi/hr

We need to find the Dale's average rate for the entire trip.

Solution:

First we find the total time and total distance by following way.

Time taken to travel from A to B = $\frac{Distance}{Speed} = \frac{120}{60}= 2\ hr$

Time taken to travel from B to C = $\frac{Distance}{Speed} = \frac{120}{40}= 3\ hr$

Time taken to travel from C to A = $\frac{Distance}{Speed} = \frac{120}{24}= 5\ hr$

So, total time taken = $2+3+5=10\ hr$

Total distance = 120 + 120 + 120 = 360 miles

Using average speed formula.

$average\ speed = \frac{Total\ distance}{Total\ time\ taken}$

$average\ speed = \frac{360}{10}$

$average\ speed = 36\ mi/hr$

Therefore, the average rate for the entire trip $average\ speed = 36\ mi/hr$

8 0

3 years ago