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2 years ago

Giving 20 points for the answer.

Mathematics

2 answers:

solong [7]2 years ago

8 0

Answer:

B, A, C

Step-by-step explanation:

add the like terms together (ending in x2 with x2, ending in x with x etc )

tamaranim1 [39]2 years ago

5 0

Answer:

B A C

Step-by-step explanation:

combining like terms

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With two reapers operating, a field can be harvested in 1 h. If only the newer reaper is used, the crop can be harvested in 1.2

kolezko [41]

Answer:

The older repear will harvest in 6 hrs

Explanation:

Given a field can be harvested in 1 hr with 2 reapers

Consider the total field to be 1

Let x be the time of older’s reaper

The field can be harvested in 1.2 hr with newer reaper alone

Older’s time of harvesting = $\frac{1}{x}$ per hour

Newer’s time of harvesting = $\frac{1}{1.2}$ per hour

Total (Older+Newer) = 1 = ${\frac{1}{x}+\frac{1}{1.2}$ }

$\frac{1}{x}+\frac{1}{1.2}=1$

$\frac{1.2+x}{1.2 x}=1$

1.2 + x = 1.2x

1.2 = 0.2x

x = 6

Therefore, older repear will harvest in 6 hrs

5 0

3 years ago

In a game the player wins if he rolls a 6 on a number cube. If the number cube is rolled 18 times, then what is a reasonable pre

SVETLANKA909090 [29]

If the number cube is rolled 18 times, then the number of unsuccessful rolls = 90 unsuccessful rolls.

Step-by-step explanation:

step 1: A cube has six faces and each face is numbered from 1 to 6.

step 2: The win in the game requires the number 6, when a cube is rolled.

step 3: On rolling a cube, the outcomes are (1,2,3,4,5, and 6).

step 4: Out of these outcomes, 5 are unsuccessful rolls (1,2,3,4,5) and 1 is a successful roll (6).

step 5: If the cube is rolled 18 times,

then the number of unsuccessful rolls = 18 * 5 unsuccessful rolls

= 90 unsuccessful rolls.

8 0

3 years ago

Show work / explain it

Travka [436]

Answer:inequality form x ≤ -1

for 3x + 9 ≤ 6

Step-by-step explanation:isolate the variable by dividing eash side by factors that dont contain the variable

7 0

3 years ago

Read 2 more answers

GIVEAWAY!!! 50PTS + BRAINLIEST 4(2x)−8x+4

blagie [28]

Answer:

4(2x) - 8x + 4

4 × 2x = 8x

8x - 8x + 4

= 4

8 0

2 years ago

I need to simplify sec^2(x)/sec^2(x)-1

frutty [35]

$\dfrac{\sec^2x}{\sec^2x-1}=\dfrac{\sec^2x}{\tan^2x}=\dfrac{\frac1{\cos^2x}}{\frac{\sin^2x}{\cos^2x}}=\dfrac1{\sin^2x}=\csc^2x$

5 0

3 years ago