What’s the area? i never understood how to do these

Combine the like terms to create an equivalent expression: − 5 j + ( − 2 j ) + 3 −5j+(−2j)+3minus, 5, j, plus, left parenthesis,

Aleonysh [2.5K]

Answer:

( -10j ) + 3.

Step-by-step explanation:

-5j + ( 2j ) + 3 - 5j + ( -2j ) (Collect all similar entities with the same +/- sign)

= -5j -5j -2j + 3 + 2j (Sum up all entities regardless of the sign)

= -12j + 3 + 2j (resolve using basic arithmetics)

= -10j + 3

5 0

3 years ago

There are 100 students in a hostel. Food provision for them is 20 days.How long will these provision last if 25 more students jo

Anvisha [2.4K]

Currently 100 students can eat for 20 days, so we need to find the number of days 125 students can eat.

Originally:
100 students eat for 20 days

New:
125 students eat for x days. Multiply original number of students by original number of days which will give the total amount of students per day. Then divide the total amount of students per day by the new number of students to find the new number of days.

x= (100 students * 20 days)/ (100+25)
x= (100 * 20)/ 125
x= 2000/125
x= 16 days

ANSWER: 125 students can eat for 16 days.

Hope this helps! :)

4 0

2 years ago

15= x over 6 - 1

Diano4ka-milaya [45]

15 + 1 = x/6
16 = x/6
16 * 6 = x
x = 96

Answer: A)

3 0

2 years ago

Read 2 more answers

Please help me asap i will give brainiest and all my points

Alinara [238K]

Answer:

a. Not Divisible

b. Divisible

c. Divisible

d. Divisible

e. Divisible

Step-by-step explanation:

To find the divisibility we need to follow the PEMDAS rule and check if the total value can be divided by the selected numbers without returning a remainder.

Let's begin with a:

$16^{5}+215$ by 33

$1,048,576 + 215$

$1,048,791$

We now then divide the total amount with 33.

$\dfrac{1,048,576}{33}$

= 31,781.5454

We can see that the value has a decimal point indicating that the total value divided by 33 will return a remainder. So it is NOT Divisible by 33.

Now let's continue on with the others.

$51^{7}-51^{6}$ by 25

$897,410,677,851 - 17,596,287,801$

$879,814,390,050$

We now then divide the total amount with 25.

$\dfrac{879,814,390,050}{25}$

= 35,192,575,602

The total value did NOT return a decimal point, therefore making the equation true. $51^{7}-51^{6}$ IS divisible by 25.

Next on we have:

$5^{5}-5^{4} +5^{3}$ by 7

$3,125 - 625 + 125$

As we know in the PEMDAS rule, that addition comes first. In this situation we have to read the equation from left to right and solve which ever comes first.

$2,500 + 125$