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sdas [7]
3 years ago
7

-8= -2(z+7) How do you sovle this equation

Mathematics
2 answers:
Vitek1552 [10]3 years ago
7 0
-8=-2z-14
+2z-8=-14
2z=-14+8
2z=-6
2z\2z=-6/2z
z=3
Anna71 [15]3 years ago
5 0
-8= -2(z+7)                  Equation

\dfrac{-8}{-2} =z+7

 
      Divide \ both \ sides \ by \ -2
 
<span>\dfrac{8}{2} =z+7  
</span>
4=z+7&#10;&#10; &#10; 

4-7=z            Subtract \ 7 \ from \ both \ sides

z=-3              Solution
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Shelby's Ice Cream Shop sold 8 sundaes with nuts and 4 sundaes without nuts. What is the ratio of the number of sundaes with nut
Romashka-Z-Leto [24]

Answer: 2:1

Step-by-step explanation:

The ratio of A to B is given by :  \dfrac{A}{B} or A : B  .

Given : sundaes with nuts  = 4

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The ratio of the number of sundaes with nuts to the number of sundaes without nuts = \dfrac{8}{4}=\dfrac{2}{1}\ \ \ [\text{Divide numerator and denominator by 4 }]

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hence, the required ratio = 2:1 .

3 0
3 years ago
Initially, there were equal amount of roses and tulips at a store. Each bouquet was made with 3 roses and 4 tulips. After the bo
egoroff_w [7]

Answer:

12 bouquets

Step-by-step explanation:

Let there be x number of roses and x number of tulips initially at the store.  Each bouquet was made with 3 roses and 4 tulips. Assume that y bouquets were made in total.

If each bouquet was made with 3 roses and 4 tulips, then y bouquets will be made with 3y roses and 4y tulips.

After the bouquets were all made, there were 30 roses and 18 tulips left in the store. This means, if we subtract number of roses that were used in bouquets from total number of roses, the result must be 30. Likewise, for tulips the result would be 18. This can be represented as:

x - 3y = 30                               Equation 1

x  - 4y = 18                                Equation 2

Subtracting Equation 2 from Equation 1, we get:

x - 3y - (x - 4y) = 30 - 18

x - 3y - x + 4y = 12

y = 12

Since y represents the number of bouquets made, we can conclude that 12 bouquets were made in the store.

5 0
3 years ago
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Step-by-step explanation: Answer is explanation

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