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3 years ago

Solving liner equations 2×- 19=30

Mathematics

1 answer:

ivolga24 [154]3 years ago

3 0

Answer:

$x=24.5$

Step-by-step explanation:

1. Add 19 to both sides.

$2x=49$

2. Divide both sides by 2.

$x=24.5$

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Ten members of the academic team went to a local restaurant after their contest. Each meal combo that came with soda cost $6.75,

Aneli [31]

Answer:

7 ordered with Soda;

3 ordered with water

Step-by-step explanation:

Given

$m \to$ With water

$n \to$ With Soda

So:

$m + n =10$ --- total

$5m + 6.75n = 62.25$ -- cost

Required

Find m and n

$m + n =10$

Make m the subject

$m = 10 - n$

Substitute $m = 10 - n$ in $5m + 6.75n = 62.25$

$5(10-n) +6.75n = 62.25$

$50-5n +6.75n = 62.25$

Collect like terms

$-5n +6.75n = 62.25 - 50$

$-5n +6.75n = 12.25$

$1.75n = 12.25$

Solve for n

$n = 12.25/1.75$

$n = 7$

$m = 10 - n$

$m = 10 - 7$

$m =3$

8 0

3 years ago

Solve for the variable c in this equation a(c + b) = d

noname [10]

Multiply everything in the parenthesis by a.

ac + ab = d

Subtract ab from both sides.

ac = d - ab

Divide a on both sides.

c = d - ab / a

Hope this helps!

3 0

3 years ago

What is equivalent to 1/2+1/6

m_a_m_a [10]

Answer:

4/6 or 2/3.

Step-by-step explanation:

You need to multiply 1/2 by 3/3 so you can can the denominater having a 6.

3 0

3 years ago

The height of a cylinder is equal to the diameter of the base. What expression represents the volume of the cylinder, in cubic u

OverLord2011 [107]

The volume of the cylinder will be 2π $R^{3}$

As shown in figure, R is the base radius of the cylinder.

H is the height of the cylinder.

Given: H = diameter of the base of cylinder.

Now, diameter of the base = 2R

So, H = 2R

Volume of cylinder = π× $R^{2}$ ×H

= π× $R^{2}$ ×(2R)

= 2 π $R^{3}$ cubic units.

7 0

3 years ago

Read 2 more answers

What is eight dozen in standard form?

Amiraneli [1.4K]

Assuming 8 dozen is 96 not 8000000000000 it would be 9.6x10¹. If it is 8000000000000 then it's 8x10¹²

8 0

4 years ago

Solving liner equations 2×- 19=30​

Solving liner equations 2×- 19=30