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aksik [14]
2 years ago
14

HELP ME AS FAST AS YOU CAN!

Mathematics
2 answers:
Dovator [93]2 years ago
8 0
D. 2x = 12

because you have to try to get x alone and the first step is to add 8 to both sides
Kryger [21]2 years ago
4 0

Answer:

D

Step-by-step explanation:

2x. add 8 to other side. you get 2x=12

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Cindy bought a bouquet of roses for $18.75 and a bouquet of daisies for $9.50. How much will she pay in sales tax if the rate is
Rina8888 [55]

Answer: \$1.75

Step-by-step explanation:

We know the rate for sales tax is:

6.2\%=\frac{6.2}{100}=0.062

This means Cindy has to pay for the bouquet of roses and the bouquet of daisies plus the 6.2\% of the value of each item.

So, we have to calculate the sales tax for both items:

Sales_Tax=\$ 18.75(0.062) + \$ 9.50(0.062)=\$ 1.1625 + \$ 0.589

Hence:

Sales_Tax=\$ 1.7515 \approx \$1.75

3 0
2 years ago
Choose the kind(s) of symmetry. (Select all that apply.) F point line plane none
hram777 [196]

the kind(s) of symmetry. (Select all that apply.) F point line plane none is given below

Step-by-step explanation:

  • The four main types of this symmetry are translation, rotation, reflection, and glide reflection.
  • There are three basic types of symmetry: reflection symmetry, rotational symmetry, and point symmetry.
  • Axis of symmetry is a line that divides an object into two equal halves, thereby creating a mirror like reflection of either side of the object. ... Symmetry is a key concept in geometry which cuts the figure into two halves that are exact reflections of each other, as shown in figure given below.
  • Symmetry is something that we observe in many places in our daily lives without even noticing it. It is easily noticeable in various arts, buildings, and monuments. Nature uses symmetry to make things beautiful. For example, consider the pictures of the butterfly and the leaf .
  • Use symmetry in a sentence. noun. Symmetry is an attribute where something is the same on both sides of an axis. An example of symmetry is a circle that is the same on both sides if you fold it along its diameter.
4 0
3 years ago
Read 2 more answers
Megan purchased a new gadget for her technology hobby. She plans to sell it sometime in the future, however, its value depreciat
Inga [223]
M represents the month because the value is decreasing every month.

Hope this helps :)
5 0
3 years ago
Read 2 more answers
The sum of two numbers is 36. The first number is one fifth 1 /5 of the second number. What are the​ numbers?
kow [346]
The two numbers are 30 and 6
5 0
2 years ago
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A 500500-gallon tank initially contains 200200 gallons of brine containing 100100 pounds of dissolved salt. brine containing 11
mixer [17]
Let A(t) denote the amount of salt in the tank at time t. We're given that the tank initially holds A(0)=100 lbs of salt.

The rate at which salt flows in and out of the tank is given by the relation

\dfrac{\mathrm dA}{\mathrm dt}=\underbrace{\dfrac{11\text{ lb}}{1\text{ gal}}\times\dfrac{44\text{ gal}}{1\text{ min}}}_{\text{rate in}}-\underbrace{\dfrac{A(t)}{200+(44-11)t}\times\dfrac{11\text{ gal}}{1\text{ min}}}_{\text{rate out}}
\implies A'(t)+\dfrac{11}{200+33t}A(t)=484

Find the integrating factor:

\mu(t)=\exp\left(\displaystyle\int\frac{11}{200+33t}\,\mathrm dt\right)=(200+33t)^{1/3}

Distribute \mu(t) along both sides of the ODE:

(200+33t)^{1/3}A'(t)+11(200+33t)^{-2/3}A(t)=484(200+33t)^{-1/3}
\bigg((200+33t)^{1/3}A(t)\bigg)'=484(200+33t)^{-1/3}
A(t)=484\displaystyle\int(200+33t)^{-1/3}\,\mathrm dt
A(t)=22(200+33t)^{2/3}+C

Since A(0)=100, we get

100=22(200)^{2/3}+C\implies C\approx-652.39

so that the particular solution for A(t) is

A(t)=22(200+33t)^{2/3}-652.39

The tank becomes full when the volume of solution in the tank at time t is the same as the total volume of the tank:

200+(44-11)t=500\implies 33t=300\implies t\approx9.09

at which point the amount of salt in the solution would be

A(9.09)\approx733.47\text{ lb}
4 0
3 years ago
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