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mr Goodwill [35]
3 years ago
8

3(0.7z+2.8)=7(1.5z+7.2)

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0

Answer:

z = -5

Step-by-step explanation:

3(0.7z + 2.8) = 7(1.5z + 7.2)

2.1z + 8.4 = 10.5z + 50.4

2.1z - 10.5z = 50.4 - 8.4

-8.4z = 42

z = 42/(-8.4)

z = -5

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(3.2 x 104) + (1.4 x 103)
Whitepunk [10]

Answer:

477

Step-by-step explanation:

  1. (3.2 × 104) = 332.8
  2. (1.4 × 103) = 144.2
  3. Plug the answers above in: (332.8) + (144.2)
  4. (332.8) + (144.2) = 477

I hope this helps!

6 0
2 years ago
Please help thanks have a great day
ELEN [110]

Answer:

-7

Step-by-step explanation:

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3 0
2 years ago
FInd the surface area of the triangular prism
Marta_Voda [28]

Answer:

273.7

Step-by-step explanation:

first fine the sides that isn't the base.

triangle area formula: (b*h)/2

(14*9)/2 = 63

since there are 3 sides you multiply this by three.

63*3=189

then find the base.

same formula since its a triangle.

(12.1*14)/2 = 84.7

now add them both up:

84.7+189 = 273.7

hope this helps!

3 0
3 years ago
Read 2 more answers
[<br> 1<br> What is the distance between the points (-4, -8) and (10,-8)?<br> Need help
Vedmedyk [2.9K]

Answer:

2

Step-by-step explanation:

√(-8-8)^2 +(10+4)^2=

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✓4

=2

3 0
2 years ago
Explain a strategy u could use to compare 2/6 and 5/8.
Schach [20]
Try to get the fractions with same denominators. Use the LCD system to find equal factors to a common denominator. Then just simply compare it. 

*Note: Larger fraction is the greater numerator.*

Hoped this helped.

~Bob Ross® 
6 0
3 years ago
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