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Sholpan [36]
3 years ago
13

If a number squared equals 49. Find the solution to x.

Mathematics
2 answers:
Mrrafil [7]3 years ago
6 0

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{x = 7}}}}}

Step-by-step explanation:

Let the number be 'x'

Create an equation

\sf{ {x}^{2}  = 49}

Squaring on both sides

\dashrightarrow{ \sf{ \sqrt{ {x}^{2} }  =  \sqrt{49} }}

\dashrightarrow {\sf{ \: x = 7}}

Hope I helped!

Best regards!

weqwewe [10]3 years ago
5 0

Answer:

x= 7

Step-by-step explanation:

Let the unknown number be x

{x}^{2}  = 49

Square root both sides

\sqrt{ {x}^{2} }  =  \sqrt{49}

Simplify

x = 7

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Q6) Renee buys 5kg of sweets to sell. She pays £10 for the sweets. Renee puts all the sweets into bags. She puts 250g of sweets
My name is Ann [436]

Answer:

30% percent profit

Step-by-step explanation:

100 pence in a pound.

1000 grams in a kilogram.

She bought 5000g of sweets.

She pays 10×100=1000 pence.

She put them into 5000÷250=20 bags.

She sells the bags for 65 pence each.

She sells them all for 20×65=1300 pence.

She gets a profit of 300 pence or 3 pounds.

She gets a percent profit of 30%.

3 0
3 years ago
What is the solution to this equation?<br> x-8=15<br><br> A)x=13<br> B)x=17<br> C)x=7<br> D) x=23
Blababa [14]

Hi there! :)

<u><em>Answer:</em></u>

<u><em>x=23</em></u>

<u><em>*The answer must have a positive sign.*</em></u>

Step-by-step explanation:

This lesson it's about addition property of equality.

First, you add by 8 from both sides of an equation.

x-8+8=15+8

And then, you add by the numbers. Simplify and solve.

15+8=23

Final answer: → x=23

Hope this helps!

Thanks!

-Charlie

Have a great day!

:)

:D

3 0
3 years ago
Please answer please
Murrr4er [49]

<BAC = <DEC = 30°

<BCA = <DCE = 70°

<CDE (or m<D) = 180° - <DEC - <DCE

<CDE = 180° - 30° - 70°

<CDE = 80°

The number that belongs in the green box is 80

3 0
4 years ago
15. Ten less the quotient of a number and 3 is 6.
coldgirl [10]

Answer:

(n/3)-10=6

Step-by-step explanation:

Let n be the number

Quotient of n and 3 is n/3

10 less that this is (n/3)-10=6

7 0
3 years ago
Please help me with these problems​
natita [175]

Check the picture below.

8 0
4 years ago
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