MATHEMATICS MIDDLE SCHOOL

Write the missing numbers so that 2a + 5b = 302a + 5b = 30 when a=0 and b= 6

2a + 5b = 30 when a=5 and b= _____

2a + 5b =30 when a=15 and b= _____

I really have no clue on how to do this and I need the answer really quickly!

Answers

Answer 1
Answer: on 2. 2 times 5 equals 10 so be equals 4 because 5 times 4 equals 20 and 20 plus 10 equals 30 and on 3 2 times 15 equals 30 so be equals 0

2-B equals 4
3-B equals 0
Answer 2
Answer: First blank:
B= 4

Second blank:
B= 0

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The table shows how much each fifth grade room earned from a bake sale.the money is going to be given to 6 different charities if each charity is given an equal amount about how much will each charity receive show how you estimated Room Earnings
110............... 327
112................ 425
114................ 550
116................ 486

Answers

327+425+550+486 is 1788 so to get the answer you need to divide it by 6

Answer:

About $300.

Step-by-step explanation:

To estimate, we will round these values to the nearest hundred.

327 rounds to 300; 425 rounds to 400; 550 rounds to 600; 486 rounds to 500.

Together, these make

300+400+600+500 = 1800

There are 6 charities; dividing by 6, we have

1800/6 = 300

Can someone help me?

Answers

a=-112 bcs -216 ft is down from sea level and -104 is also down from sea level bcs both values are in minus but -104 is higher than other so you can minus it from -216 the difference is the answer
b=-109

Multiply and simplify: y(2x+3y)(2x+3y)

Answers

Simplifying y(2x + 3y)(2x + 3y)

Multiply (2x + 3y) * (2x + 3y) y(2x * (2x + 3y) + 3y * (2x + 3y)) y((2x * 2x + 3y * 2x) + 3y * (2x + 3y))
 
Reorder the terms: y((6xy + 4x2) + 3y * (2x + 3y)) y((6xy + 4x2) + 3y * (2x + 3y)) y(6xy + 4x2 + (2x * 3y + 3y * 3y)) y(6xy + 4x2 + (6xy + 9y2))

Reorder the terms: y(6xy + 6xy + 4x2 + 9y2)
 
Combine like terms: 6xy + 6xy = 12xy y(12xy + 4x2 + 9y2) (12xy * y + 4x2 * y + 9y2 * y) (12xy2 + 4x2y + 9y3)
2xy+3y^2*2xy+3y^2
3y^2 * 3y^2

It took 7 hours to mow 4 lawns. How many lawns can I mow in 35 hours? Confused.. Please Check!!!

Answers

7  35   4x35/7= 20 lawns
4   x

Students were surveyed about their wither break plans.Of the people that stated they were going skiing, 25% did not actually go.How many students actually went skiing?

Answers

Answer:

The number of students who actually went for the skiing is 0.75 times the total number of students .

Step-by-step explanation:

Given as :

Students were surveyed about their wither break plans

The percentage of students who did not go for skiing = 25 %

So, The percentage of students who did not go for skiing =100 % - 25 % = 75%

Let The total number of students = x

So, The number of students actually went for the skiing = 75% of the total number of students

I.e The number of students actually went for the skiing = (75)/(100)× x

Or, The number of students actually went for the skiing = 0.75× x

∴ The number of students actually went for the skiing = 0.75 x

Hence The number of students who actually went for the skiing is 0.75 times the total number of students . Answer

I need this to be answered PLEASE!!!

Answers

Since 45 minutes is 75% of an hour, you need to convert into a decimal and add 2. Which gives you 2.75. Then you have to divide 8,580 by 2.75 and you get a final answer of 3120 words. Hope this helps!
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