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sleet_krkn [62]
3 years ago
5

I will fail if i dont pass this test plzz helpp!!​

Mathematics
1 answer:
kirza4 [7]3 years ago
5 0

Answer:

3.38

yes

Step-by-step explanation:

2.76+4.0=6.76

6.76/2=3.38

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Seperate the number 53 into 3 parts so that the second number is 3 less than the first number and the third number is twice the
irga5000 [103]
Hello,

Let a the first, b the second and c the third.
a+b+c=53
b=a/3
c=2a
==>a+a/3+2a=53
==>10a/3=53
==>a=15.9
c=2*a=2*15.9=31.8
b=a/3=15.9/3=5.3

Proof: a+b+c=15.9+5.3+31.8=53

The second number is 5.3
7 0
3 years ago
4x – 3y=8<br> 2. 5x – 2y = -11
AlladinOne [14]

Answer:

x = -7

y =  - 12

Step-by-step explanation:

The given system is:

4x-3y=8

5x-2y=-11

We make x the subject in the top equation to get:

x =  \frac{3}{4}y + 2

Plug this expression for x in the bottom equation to get

5( \frac{3}{4}y + 2) - 2y=  - 11

We expand to obtain

\frac{15}{4} y + 10 - 2y =  - 11

Multiply through by 4

15y + 40 - 8y =  - 44

Group similar terms

15y - 8y =  - 44 - 40

7y =  - 84

y =  -  \frac{84}{7}  =-12

This means

x =  -12\times  \frac{3}{4}  + 2

x =  - 7

6 0
3 years ago
+23+-26 RESPUESTA PORFIS
den301095 [7]

Answer:

-3

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
B) what is the mean<br>C) what is the standard deviation ​
mina [271]
The mean is the average.

i’ve found this a helpful way to remember:
the medians the middle
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7 0
3 years ago
Another name for a hexahedron
Mariana [72]

Answer: a cube

(you could have looked this up on google that's what I did)

They are making me write an answer with at least 20 characters sorry

8 0
3 years ago
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