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BabaBlast [244]

2 years ago

15

Classify the system of equations and identify the number of solutions.

1 answer:

Marat540 [252]2 years ago

5 0

Answer:

C. Inconsistent; none

Step-by-step explanation:

<u>Given system:</u>

2x + y = 7 ⇒ y = -2x + 7
y + 5 = -2x ⇒ y = -2x - 5

<u>We observe that:</u>

The slopes are same m = -2
The y-intercepts are different, b = 7 and b = - 5
The lines are parallel, so no solution

Correct choice is C

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Find the total surface area of a cylinder with a diameter of 11 meters and a height of 11 meters. Round to the nearest tenths pl

abruzzese [7]

Answer:

700pi

Step-by-step explanation:

2pi(10)^2+2pi(10)(25)

5 0

3 years ago

Christopher earns $5. 80 an hour and time-and-a-half for all hours over 40 hours. How much did he earn the week he worked 44. 5

Monica [59]

Answer: $271.15

Step-by-step explanation:

$5.80 × 40 = 232

Time and a half = $8.70

Overtime is 4.5 hours

$8.70 × 4.5 = 39.15

$232 + 39.15 = 271.15

6 0

2 years ago

Pick the correct letter for 6>x<br><br> A<br> B<br> C<br> D

nevsk [136]

Your correct answer is D

5 0

3 years ago

You have a bag that contains 20 quarters, 20 dimes, and 15 nickels. When randomly selecting two coins with no replacement find t

iogann1982 [59]

Answer:

P(2 quarters) = 19/ (13*16) = 19/208 = 0.0913

Step-by-step explanation:

probability of getting 2 quarters?

ok

first draw: there are 20 quarters to choose from

second draw: there are 19 quarters left to choose

so Total coins are 65 coins

P(2 quarters) = P( 1st quarter)* P(2nd quarter)

P(2 quarters) = 20/65 * (19/64)

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4 0

3 years ago

Please answer question now

nata0808 [166]

Answer:

469.42 ft²

Step-by-step explanation:

Law of sines;

w/sin27 = 38/sin40

w = sin27*38/sin40

w = 26.84 ft

Angle x;

∡X = 180 - 27- 40 = 113º

Area;

A = 0.5*(26.84)*(38)*sin(113)

A = 469.42 ft²

8 0

3 years ago