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3 years ago

Drag each equation to show if it could be a correct first step to solving the equation

Mathematics

1 answer:

Elena-2011 [213]3 years ago

7 0

Answer:

x=6

Step-by-step explanation:

4(3+x)=36

12+4x=36

4x=36-12

4x=24

x=6

Proof: 4(3+x)=36

4(3+6)=36

12+24=36

36=36

Hope it helps

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Keira is reviewing her checking account statement from the bank. Her starting balance and transactions are listed.

Tatiana [17]

Answer:

39.58

Step-by-step explanation:

49.15-16.23=32.92

32.92+35=67.92

67.92-8.34=59.58

59.58-20=39.58

Her balance is $39.58

Hope this helps

7 0

3 years ago

Read 2 more answers

your car weighs 7,630 pounds. There is a road safety fee for cars. you fee is $28 plus $0.023 per pound. What is the fee for you

rusak2 [61]

Answer:

Step-by-step explanation:

7630 x .023 = 175.49

175.49 + 28 = $203.49

3 0

3 years ago

A student determined that the area of the segment of c shown above is Asegment = 137.71 ft2. The student's work is shown below.

ivolga24 [154]

Answer:

Option D. The student did not use the correct formula to calculate the area of the segment

Step-by-step explanation:

step 1

Find the area of the isosceles triangle

Applying the law of sines

$A=\frac{1}{2}(12^{2})sin(60\°)=62.35\ ft^{2}$

step 2

Find the area of the sector

The area of the sector is 1/6 of the area of the circle

$A=\pi r^{2}/6$

substitute the value

$A=(3.14)(12)^{2}/6=75.36\ ft^{2}$

step 3

Find the area of the segment

The area of the segment is equal to the area of sector minus the area of triangle

$A=75.36\ ft^{2}-62.35\ ft^{2}=13.01\ ft^{2}$

therefore

The student did not use the correct formula to calculate the area of the segment

4 0

3 years ago

What's the answer for this Patrick and his friends Jerome and Marina collect football cards. Altogether they have 3,000 cards. P

AVprozaik [17]

Marina collected 1000 cards

6 0

3 years ago

Complete the missing value in the solution to the equation:<br> 7 + 5x = =3(y-2)<br> ( ,5)

mafiozo [28]

Answer:

x = 2/5

Step-by-step explanation:

Given:

7 + 5x = 3(y-2)

Rearrange this equation such that x is expressed in terms of y

7 + 5x = 3(y-2) (expand right side)

7 + 5x = y(3)-2(3)

7 + 5x = 3y-6 (subtract 7 from both sides)

5x = 3y - 6 - 7

5x = 3y - 13

we are given the y-value of the coordinate pair (? , 5)

simply substitute y=5 into the equation above

5x = 3y - 13

5x = 3(5) - 13

5x = 15 - 13

5x = 2 (divide both sides 5)

x = 2/5

7 0

3 years ago