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4 years ago

Which expression represents 8 less than twice the sum of a number, x, and 2? Looking for brainliest plz help.

Mathematics

2 answers:

nikklg [1K]4 years ago

8 0

Answer:

Step-by-step explanation:

rosijanka [135]4 years ago

5 0

Answer:

Step-by-step explanation:

Sum of x and 2: x + 2

Twice the sum: 2(x + 2)

8 less: 2(x + 2) - 8

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Vance weighs 250 pounds and is losing 5 pounds each month. Phillip weighs 200 pounds

Lelu [443]

Answer:

250-5m=200+4m ; 5.56 months

Step-by-step explanation:

<u>Let's start this question by writing two expressions that depict the situation.</u>

Vance: 250-5m

This simply means that Vance currently weighs 250 pounds, and every month he is losing 5 pounds. (m=number of months)

Phillip: 200+4m

This is essentially the same thing. Phillips starting weight is 200, but here we use an addition sign because he is gaining 4 pounds every month as opposed to losing it.

To find the number of months it'll take for them to weigh the same, we just need to equate the values and solve for m.

<u>Our equation would then be:</u>

250-5m=200+4m

Let's solve the equation by bringing the variables to one side and the numbers to the other.

250-5m=200+4m

Subtract 4m from both sides

250-5m-4m=200+4m-4m

250-9m=200

Subtract 250 from both sides

250-250-9m=200-250

-9m=-50

Divide both sides by -9

m=5.556

So it will take about 5 months and a half to weigh the same.

3 0

2 years ago

Mr. and Mrs. Preston and their two children are very excited about their upcoming

ki77a [65]

Answer:

They will spend less at the sunny side hotel

Step-by-step explanation:

The attachment completes the question.

From the question, we understand that there are 4 individuals involved.

Mr. Preston (1)
Mrs. Preston (1)
The children (2)

And they will spend one night

First, we need to calculate the expenses in Traveler's hotel.

$Rate = \$107.10$ (for 3 people)

$Additional\ Person = \$21.55$ (for 1 person)

$Breakfast = \$8.75 * 4$ (for 4 people)

$Tax = \$16.85$

Total Expenses

$Total = \$107.10 + \$21.55 + \$8.75* 4 + \$16.85$

$Total = \$107.10 + \$21.55 + \$35.00 + \$16.85$

$Total = \$108.50$

For Sunny Side hotel:

$Rate = \$152.95$ (for 4 people)

$Tax = \$21.34$

Total Expenses:

$Total = \$152.95 + \$21.34$

$Total = \$174.29$

By comparison, they will spend less at the sunny side hotel.

7 0

3 years ago

Adina is constructing a line perpendicular to YJ . She has already constructed two arcs as shown. She moves her compass point to

mestny [16]

It has to be wider than the first two arcs or else you will just get two circles side by side with point c in common. I usually measure it to be the length of a point between the c and j. It is a good point to get the arcs to intersect.

8 0

4 years ago

Read 2 more answers

1.Solve the differential equation dy/dx= y^2/x^3 for y=f(x) with the condition y(1) = 1.

Elza [17]

This ODE is separable, so you can write

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{y^2}{x^3}\iff\dfrac{\mathrm dy}{y^2}=\dfrac{\mathrm dx}{x^3}$

Integrating both sides gives

$-\dfrac1y=-\dfrac1{2x^2}+C$

and given the initial condition $y(1)=1$ , you have

$-\dfrac11=-\dfrac1{2(1)^2}+C\implies C=-\dfrac12$

so that the solution is

$-\dfrac1y=-\dfrac1{2x^2}-\dfrac12\implies y=\dfrac1{\frac1{2x^2}+\frac12}=\dfrac{2x^2}{1+x^2}$

4 0

4 years ago

How do you solve 2x-2y+5=0 for x and then also for y

Sedbober [7]

Solving for 'y'

2x - 2y + 5 = 0

Add 2y on both sides

2x + 5 = 2y

Divide by 2 on both sides

y = x + 5/2
y = x + 2.5

Solving for 'x'

2x - 2y + 5 = 0

Subtract 2x on both sides.

-2y + 5 = -2x

Divide 2x on both sides

x = y - 5/2
x = y - 2.5

3 0

4 years ago

Read 2 more answers