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2 years ago

Solve x^2-y^2+x+1+2yx+y=0

Mathematics

1 answer:

Harlamova29_29 [7]2 years ago

4 0

Combine like terms and use inverse operations

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Which measurement is the most precise?<br> A 5.52 m C 5.516 m<br> B 552 cm D 550 cm

Alik [6]

I would say C. 5.516 m.

Hope this helps !

Photon

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3 years ago

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assume that a 150-pound person starts a diet loses 2 pounds per week for 15 weeks . write an equation modeling this situation

boyakko [2]

Weight = w
no. of weeks = n

w = 150 - 2n

8 0

3 years ago

4 x 3/4 is greater than 3/4 , since 4 is greater than 1. True o false

Juliette [100K]

Answer:

Trueeee I guessss

Step-by-step explanation:

I don't know

4 0

2 years ago

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Helium is used for balloons because it is less dense than air. This is what allows helium balloons to rise. Suppose a helium- ai

Kay [80]

Answer: Option A

About 0.02 pounds

Step-by-step explanation:

We know that density is defined as:

$d = \frac{m}{v}$

Where

d is the density

m is the mass

v is the volume

We want to calculate the helium-air mass of a spherical balloon and we know its density and the diameter of the balloon.

Then we can calculate its mass.

1) We use the diameter of the spherical globe to calculate its volume.

The volume of a sphere is:

$V = \frac{4}{3}\pi r ^ 3$

and

$radius = \frac{diameter}{2}$

$V = \frac{4}{3}\pi(\frac{d}{2}) ^ 3\\\\V = \frac{4}{3}\pi(\frac{1}{2}) ^ 3$

$V= 0.5236\ ft^3$

2) Use the density formula to find the mass

$d = \frac{m}{v}$

$m = vd$

$m = (0.5236\ ft^3)*(0.04\ \frac{pound}{ft^3})\\\\m = 0.02\ pounds$

<em>The answer is 0.02 pounds</em>

5 0

2 years ago

Before using the Gizmo, consider an arithmetic sequence with a first term (a1) of 4 and a common difference (d) of 3.

mote1985 [20]

Answer:

Step-by-step explanation:

The nth term of an arithmetic sequence is expressed as $Tn = a+(n-1)d$ .

a is the first term of the sequence

d is the common difference

n is the number of terms

Given the first term a = 4 and common difference d = 3, we can calculate the first five terms of the sequence using the formula.

If n = 2

$T_2 = 4+(2-1)*3\\T_2 = 4+(1)*3\\T_2 = 4+3\\T_2 = 7\\\\when \ n = 3;\\T_3 = 4+(3-1)*3\\T_3 = 4+(2)*3\\T_3 = 4+6\\T_3 = 10\\\\when\ n = 4\\T_4 = 4+(4-1)*3\\T_4 = 4+(3)*3\\T_4 = 4+9\\T_4 = 13\\\\when\ n = 5\\T_5 = 4+(5-1)*3\\T_5 = 4+(4)*3\\T_5 = 4+12\\T_5 = 16\\$

The first five terms of the sequence from lowest to highest are 4, 7, 10, 13 and 16

4 0

2 years ago