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mars1129 [50]
2 years ago
5

2/7x-23)+5x = 18 (x-1)​

Mathematics
1 answer:
Blizzard [7]2 years ago
6 0

Answer:

x= - 35 over 89

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

2

7

x−23+5x=18(x−1)

2

7

x+−23+5x=(18)(x)+(18)(−1)(Distribute)

2

7

x+−23+5x=18x+−18

(

2

7

x+5x)+(−23)=18x−18(Combine Like Terms)

37

7

x+−23=18x−1837

7

x−23=18x−18

Step 2: Subtract 18x from both sides.

37

7

x−23−18x=18x−18−18x

−89

7

x−23=−18

Step 3: Add 23 to both sides.

−89

7

x−23+23=−18+23

−89

7

x=5

Step 4: Multiply both sides by 7/(-89).

(

7

−89

)*(

−89

7

x)=(

7

−89

)*(5)

x=

−35

89

Step-by-step explanation:

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Can anyone solve this for me?? I will give brainliest and 5 stars and thanks
Tcecarenko [31]

Answer:

3 cm

Step-by-step explanation:

When we enlarge or shrink an object, we perform a dilation. A dilation preserves the relationship between sides and the exact angle measure. This means the original and the enlargement are proportional and any missing lengths can be found through a proportion.

A proportion is an equation where two ratios or fractions are equal. The ratios or fractions compare like quantities. For example, we will compare height over length of the original rectangle to an equal ratio of height to length of the enlargement. Since we do not know height of the enlargement, we will use a variable to write:

\frac{2}{9} =\frac{h}{13.5}

I can now cross-multiply by multiplying numerator and denominator from each ratio.

9h=2(23.5)\\19h=27

I now solve for h by dividing by 9.

\frac{9h}{9} =\frac{27}{9} \\h= 3

The new height is 3 cm.


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astraxan [27]

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A scientist has started a bacteria culture with 1,000 cells. The cells will double every hour. 1. Write the sequence that repres
babymother [125]

Answer:

See below in bold.

Step-by-step explanation:

1.   The sequence is 1000, 2000, 4000, 8000.

2.  The common ratio  is 2000/1000 = 2.

3.   Number of bacteria after 7 hours is 1000(2)^(7- 1)

    = 64,000.

4.   1000(2)^(x-1)  > 1,000,000

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The total surface area of a cube is 96cm2, find its volume.
Setler [38]

Answer:

\huge\boxed{V=64cm^3}

Step-by-step explanation:

The formula of a surface area of a cube:

SA=6a^2

The formula of a volume of a cube:

V=a^3

We have

SA=96cm^2

Calculate the edge length (<em>a</em>).

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Calculate the volume of a cube:

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2 years ago
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