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3 years ago

X + 20 + 2(x - 5) + 5x

Mathematics

1 answer:

iren2701 [21]3 years ago

3 0

Answer:

10+8x

Step-by-step explanation:

x + 20 + 2 (x-5) + 5x This is the problem

x + 20 +2x-10 + 5x You distribute the 2

From here you just combine the similar numbers. "x"s plus "x"s and ones without "x"s plus each other

x + 10 +2x + 5x 20-10 gets you 10

10 + 8x 5x+2x gets you 7. From that point x equal 1 (or 1x) and you get the answer of 10 + 8x

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The order pairs (15,12) means that ? Pounds of beans cost $ ?

irinina [24]

Answer:

it means 15 pounds of beans cost 12 dollars.

Step-by-step explanation:

it means 15 pounds of beans cost 12 dollars.

3 0

4 years ago

Sienna has 5 3/4 pounds of grapes. She eats 1/8 pound and gives 2 1/2 pounds to her brother. How many pounds of grapes does Sien

miskamm [114]

The pounds of grapes left with seinna is 3.125 or $\frac{25}{8}$ pounds

<h3>Solution:</h3>

Given that Sienna has $5\frac{3}{4}$ pounds of grapes

She eats $\frac{1}{8}$ pound and gives $2\frac{1}{2}$ pounds to her brother

To find: pounds of grapes left with seinna

We can find the pounds of grapes left with seinna by subtracting the pounds of grapes she ate and pounds of grapes she gave to brother from the total pounds of grapes she had

Pounds of grapes left with seinna = total pounds of grapes - pounds of grapes she ate - pounds of grapes she gave to brother

$\text {total pounds of grapes }=5 \frac{3}{4}=\frac{4 \times 5+3}{4}=\frac{23}{4}$

$\text {pounds of grapes she ate }=\frac{1}{8}$

$\text {pounds of grapes she gave to brother }=2 \frac{1}{2}=\frac{2 \times 2+1}{2}=\frac{5}{2}$

Substituting the values we get,

$\text {Pounds of grapes left with seinna }=\frac{23}{4}-\frac{1}{8}-\frac{5}{2}$

$\text { Pounds of grapes left with seinna }=5.75-0.125-2.5=3.125$

Thus the pounds of grapes left with seinna is 3.125 or $\frac{25}{8}$ pounds

5 0

3 years ago

Milton has his money invested in a stock portfolio. The value, v(.r), of his

exis [7]

Answer:

B) It decreases 22% per year.

Step-by-step explanation:

We are given that The value, v(.r), of his portfolio can be modeled with the function : $y(x) = 30,000(0.78)^x$

Where x is the number of years since he made his investment.

Formula : $P(1-r)^t=A$

Where P = Principal

r = rate of decrease

t = time

A = Amount after t years

So, On comparing

P = 30000

t=x

A=y(x)

$1-r=0.78$

$\Rightarrow 1-0.78=r$

$\Rightarrow 0.22=r$

So, r = 0.22

r=22%

So, Rate of decrease is 22%

So, Option B is true,

It decreases 22% per year.

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=2%284z%20-%202%29%20%3D%2044" id="TexFormula1" title="2(4z - 2) = 44" alt="2(4z - 2) = 44" ali

Vinvika [58]

2(4z−2) = 44

Simplify both sides of the equation.

Distribute:

(2)(4z)+(2)(−2) = 44

8z + −4 = 44

8z − 4 = 44

Add 4 to both sides.

8z − 4 + 4 = 44 + 4

8z = 48

Divide both sides by 8

8z/8 48/8

z = 6

4 0

3 years ago

Read 2 more answers

Tony wants to buy a ticket for $15.75. He has $9.25. At least how much money do you earn to buy the ticket?

kogti [31]

Answer:

6.50

Step-by-step explanation:

15.75-9.25=6.5

5 0

4 years ago