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Rina8888 [55]
3 years ago
12

Exercises 1-3, tell which equation you would choose to solve for one of the variables. Explain.

Mathematics
2 answers:
Archy [21]3 years ago
7 0
I would choose the 1 first one
Oksi-84 [34.3K]3 years ago
4 0

Answer:

1, because you can subtract both equations to eliminate y , and you will be left with only x.

Step-by-step explanation:

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A cylindrical metal pipe has a diameter of 8.4 millimeters
Phoenix [80]

Answer:

C. 271.44 mm^3

Step-by-step explanation:

We need to first find the volume of the pipe, then find the volume of the hole and then subtract the volume of the hole from the volume of the pipe.

The diameter of the pipe is 8.4 mm. This means its radius is:

8.4/2 = 4.2 mm

The height of the pipe is 10 mm

The volume of a cylinder is given as:

V = \pi r^2h

where r = radius

h - height

Therefore, the volume of the cylinder  without the hole is:

V = \pi * 4.2^2 * 10\\\\V = 554.18 mm^3

The diameter of the hole is 6 mm. Its radius is:

6/2 = 3 mm

The volume of the hole is:

V = \pi * 3^2 * 10\\\\V = 282.74 mm^3

The volume is:

554.18 - 282.74 = 271.44 mm^3

5 0
3 years ago
Read 2 more answers
Jenny went to the store with $10 and returned home
stira [4]

Answer:

The milk is priced at $1.74/gallon

Step-by-step explanation:

If Jenny started out with $10 and ended up with $1.30 in change, she must have spent $10 - $1.30, or $8.70.

                                                        $8.70

Then the unit price for the milk is ---------- = $1.74 per gallon

                                                         5 gal

8 0
2 years ago
HElPPPPPPPPP PPZPZLXPLZPLZPZZZZZZZZ
monitta

Answer:

5. 43 / 6

6. 8.027778

2. -0.167

4. 1.5

Step-by-step explanation:

5. Conversion a mixed number to a improper fraction: 9 2/3 = 9 · 3 + 2 /3 = 29/3

Conversion a mixed number to a improper fraction: 2 1/2 = 2 · 2 + 1 /2 = 5/2

Subtract: 29/3 - 5/2 = 29 · 2 / 3 · 2 - 5 · 3 / 2 · 3 = 58 / 6 - 15 / 6 = 58 - 15 / 6 = 43 / 6

6. 2 4/9 + 5 7/12 = 289 / 36 = 81 / 36 = 8.027778

2. 3/4 - 11/12 = -1 / 6 =-0.1666667

4. 1 9/10 - 2/5 = 3 / 2 = 11 / 2 = 1.5

5 0
3 years ago
Please help I need P factored completely <br> P(x)=x^4+50x^2+625
victus00 [196]

Answer: here u go and can u give me brainliest

Step-by-step explanation:

8 0
3 years ago
Find the area of this circle please…Use 3 for pi
ZanzabumX [31]

Given:

The radius of circle is 11 inch

The value for pi is 3

The objective is to find the area of the circle.

The area of the circle is given by the formula:

A=\pi\times r^2^{}

Substituting ,r = 11

\pi=3

We get:

\begin{gathered} A=\pi\times r^2 \\ =3\times(11)^2 \\ =3\times121 \\ =363 \end{gathered}

Hence, the area of the circle is 363 square inches

5 0
1 year ago
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