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Y_Kistochka [10]
2 years ago
9

Given an expression such as 3x + 2y, find the value of the expression when x is equal to 4 and y is equal to 2.4 Given an expres

sion such as 3x + 2y , find the value of the expression when x is equal to 4 and y is equal to 2.4​
Mathematics
1 answer:
Reil [10]2 years ago
4 0

Answer:

16.8

Step-by-step explanation:

3x+2y

3(4)+2(2.4)

12+4.8

16.8

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The greatest common factor of three numbers is 9. The sum of the numbers is 90. Find the three numbers.
Ivan

Answer:

2, 3, 5

Step-by-step explanation:

9 x 2= 18

9 x 3 = 27

9 x 5 = 45

4 0
3 years ago
Teresa is buying glitter markers to put in gift bags The table shows the relationship between the number of gift bags and the nu
Alenkinab [10]
A dependent variable is a value that depends on how the other variables are controlled or manipulated.
Meanwhile, an independent variable, is as what its name suggests, is independent and doesn't change based on the value of other variables.
a.) The dependent variable is the number of glitter markers
b.) The independent variable is the number of gift bags
c.) The number of glitter markers Teresa needs to buy depends on the number of gift bags she has. She has to multiply 
d.) The relationship is additive. The more gift bags Teresa has, the more glitter markers she has to buy. 
5 0
3 years ago
There are two mystery numbers the sum of eight times the first number and 10 times the second number is 24. The sum of seven tim
bonufazy [111]

Answer:

x = the first mystery number = 2

y = the second mystery number = 0.8

Step-by-step explanation:

Let

x = the first mystery number

y = the second mystery number

8*x + 10*y = 24

8x + 10y = 24

7*x + 10*y = 26

7x + 10y = 26

8x + 10y = 24 (1)

7x + 10y = 26 (2)

Subtract (1) from (2) to eliminate y

8x - 7x = 26 - 24

x = 2

Substitute x = 2 into (1)

8x + 10y = 24 (1)

8(2) + 10y = 24

16 + 10y = 24

10y = 24 - 16

10y = 8

y = 8/10

y = 0.8

x = the first mystery number = 2

y = the second mystery number = 0.8

8 0
3 years ago
Lara reads 10 chapters in 4 hours. At this pace, how long will it take her to read 25 chapters? Enter your answer in the box.
Oduvanchick [21]
Lara can read 10 chapters in 4 hours.

At this rate, she can read half that many chapters in half the time.
So she reads 5 chapters in 2 hours.

So Lara reads 10 chapters in 4 hours,
+ 10 chapters in 4 more hours,
+ 5 chapters in 2 more hours.

That's 25 chapters in total, and 10 hours in total, ya? :)


8 0
3 years ago
Read 2 more answers
What is the slope?<br><br><br> Bbcxsfjf
umka21 [38]

Answer:

The slope is 1 and the y intercept is 1

8 0
3 years ago
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