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3 years ago

What is 2x plus 21 divided by 2 equals x plus 7?

Mathematics

2 answers:

AlexFokin [52]3 years ago

7 0

ANSWER: x=-7/2

Solution:

2x+21/2=x+7

x+21/2=7

x=7-21/2

x=-7/2

Anna71 [15]3 years ago

5 0

Answer:

-3.5

Step-by-step explanation:

2x+21/2=x+7

2x + 10.5 = x + 7

-x -x

x + 10.5 = 7

-10.5 -10.5

x = -3.5

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25x

solmaris [256]

Answer:

option c is correct answer

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2 years ago

Marcus needs 3 1/10 m of blue fabric and 1 1/5 m of yellow fabric to make his costume. How much more blue fabric than yellow fab

Kamila [148]

Answer:

$1\frac{9}{10}\ m$

Step-by-step explanation:

we know that

To find out how much more blue fabric than yellow fabric does Marcus need, subtract the quantity of yellow fabric from the quantity of blue fabric

step 1

Convert mixed number to an improper fraction

$3\frac{1}{10}\ m=\frac{3*10+1}{10}=\frac{31}{10}\ m$

$1\frac{1}{5}\ m=\frac{1*5+1}{5}=\frac{6}{5}\ m$

step 2

Subtract the numbers

$\frac{31}{10}-\frac{6}{5}=\frac{31}{10}-\frac{12}{10}=\frac{19}{10}\ m$

Convert to mixed number

$\frac{19}{10}\ m=\frac{10}{10}+\frac{9}{10}=1\frac{9}{10}\ m$

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2 years ago

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Write 0.5% as a decimal.

Pavlova-9 [17]

0.5% = 0.005
0.5% = 1/200

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2 years ago

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Could you please answer this question?

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

3x - y = 17 .......A

10 × [x/5 + y/2] = 10 × 0

2x + 5y = 0 .......B

......A× 5 both 2 sides of equation

15x - 5y = 85 .....C

......B + ........C

2x + 15x = 0 + 85

17x = 85

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put x value in ........A or .......B or ......C

you will receive y = -2

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3 years ago

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Describe the transformation f(x) = Vx+ 1 - 5 in words.

ivanzaharov [21]

Answer:

The translation is 1 unit to the left and 5 units down

Step-by-step explanation:

The explanation is given below;

Given that

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The parent function is

$f(x) = \sqrt{x}$

After that

The parent function would be transform 1 units to the left $\sqrt{x+1}$

And afterwards it would be transform in 5 units down $\sqrt{x+1} - 5$

The parent function $f(x) = \sqrt{x}$ would be translate in 1 unit to the left and 5 units down

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2 years ago

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