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Alja [10]
3 years ago
7

2x=14Find the value of x.​

Mathematics
2 answers:
Rashid [163]3 years ago
6 0

Answer:

<h3>ᎪꪀsωꫀᏒ</h3>

x= 7

Step-by-step explanation:

2x=14

x= 14/2

x= 7

svet-max [94.6K]3 years ago
6 0

Answer:

\sf\longmapsto \: x = 7

Step-by-step explanation:

\sf\longmapsto \: 2x = 14

\sf\longmapsto \: x = 14 \div 2

\sf\longmapsto \: x = 7

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Step-by-step explanation:


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3 years ago
Solve for y
Andreas93 [3]

Answer:

y = 3

Step-by-step explanation:

2y - 3 = \sqrt{3y^2-10y+12}

square both sides to remove sqrt bracket

(2y - 3)^2 = ( \sqrt{3y^2-10y+12} )^2

simplify both sides

(2y - 3)(2y - 3) = 3y^2 - 10y + 12

4y^2 - 12y + 9 = 3y^2 - 10y + 12

bring all value to left side

y^2 - 2y - 3 = 0

factor

(y - 3)(y + 1)

solve for y

y = 3, y = -1

When plugged back into the equation, only y = 3 is true

8 0
3 years ago
Read 2 more answers
What is....<br><br> 4k^2-2k+4=-4 <br> Factored?
Delvig [45]

Answer:

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Step-by-step explanation:

7 0
4 years ago
Find the sum of the arithmetic sequence. 3,5,7,9,....,21
inysia [295]
The sum of any arithmetic sequence is the average of the first and last terms times the number of terms.

Any term in an arithmetic sequence is:

a(n)=a+d(n-1), where a=initial term, d=common difference, n=term number

So the first term is a, and the last term is a+d(n-1) so the sum can be expressed as:

s(n)(a+a+d(n-1))(n/2)

s(n)=(2a+dn-d)(n/2)

s(n)=(2an+dn^2-dn)/2

However we need to know how many terms are in the sequence.

a(n)=a+d(n-1), and we know a=3 and d=2 and a(n)=21 so

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18=2(n-1)

9=n-1

10=n so there are 10 terms in the sequence.

s(n)=(2an+dn^2-dn)/2, becomes, a=3, d=2, n=10

s(10)=(2*3*10+2*10^2-2*10)/2

s(10)=(60+200-20)/2

s(10)=240/2

s(10)=120
7 0
3 years ago
Peter buys 8.5 square feet of carpet. The carpet costs $10.20 per square foot. How much does Peter pay for the carpet?
Solnce55 [7]

This is what i did to solve

8.5*10.2=$86.70

7 0
3 years ago
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