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garri49 [273]
3 years ago
9

PLEASE HELP!!! WILL THANK AND MARK BRAINIEST!!!! Match the properties for 2.8 + 6.7 - 8.4 - 4.1

Mathematics
1 answer:
uysha [10]3 years ago
3 0
Comunitie and assoiative

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Find the value of two numbers is there some is 12 and there difference is 4
Mademuasel [1]
You mean their sum is 12?

A) x + y = 12
B) x -y = 4  then we add both equations:
2x = 16
x = 8
y = 4



3 0
3 years ago
The elevation at ground level is 0 feet. An elevator starts 90 feet below ground level. After traveling for 15 seconds, the elev
kramer

Answer:

Step-by-step explanation:

i believe the answer is 7.33333333333 feet per second

4 0
3 years ago
3. Kevin went to the nursery and bought a 5 ft tall tree. After planting the tree, Kevin made a table to record the height, h, o
Rina8888 [55]

Answer:

uh where's the rest of the question?

Step-by-step explanation:

3 0
3 years ago
Andy is collecting pocket change for a fundraiser. he begins with 102 coins in the cup, and their monetary value is $17.10. if h
Ira Lisetskai [31]

If Andy has 102 coins mixed with dimes and quarters and monetary value of $17.10 then he has 56 dimes and 42 quarters.

Given number of coins Andy has is 102 and montary value of all coins is $17.10.

We have to determine number of dimes and quarters.

1 dime=$0.10

1 quarter=$0.25

Suppose the number of dimes be x and number of quarters be y.

The equations are:

0.10x+0.25y=17.10------------1

x+y=102-------------2

from equation 2, y=102-x

Put the value of y=102-x in equation 1

0.10x+0.25(102-x)=17.10

0.10x+25.5-0.25x=17.10

-0.15x=17.10-25.5

-0.15x=-8.4

x=8.4/0.15

x=56

Put the value of x in y=102-x

y=102-56

y=46

Hence Andy has 56 number of dimes and 46 quarters.

Learn more about equation at brainly.com/question/2972832

#SPJ4

5 0
2 years ago
What do you have to do to each side to solve 5x &lt; 20? <br> Solve 5x &lt; 20. ✏️Show your work
sergejj [24]

Answer:

x < 4

Step-by-step explanation:

Step 1: Write inequality

5x < 20

Step 2: Solve for <em>x</em>

  1. Divide both sides by 5: x < 4

Here we see that any number less than 4 will work. So numbers like 3, 0, or even -12587235897 would work.

5 0
3 years ago
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