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Alona [7]
3 years ago
10

Pls pls help Perform the indicated operations. a) 7a/20b b) 7ab/20 c) 7/20ab

Mathematics
1 answer:
Elina [12.6K]3 years ago
8 0

Answer:

it's a) 7a/20b

Step-by-step explanation:

5( \frac{a + 2}{4b} ) - 2( \frac{a - 1}{10b} ) + 4( \frac{a - 3}{5b} ) \\  \\  \frac{5a + 10 - 2a + 2 + 4a - 12}{20b }  \\  \\  \\  \frac{7a}{20b}

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Admission for adults is 12 dollars. Admission for kids is eight dollars.One day 575 people entered the cave paying 5600 how many
BlackZzzverrR [31]

Answer:

Step-by-step explanation:

Admission for adults is 12 dollars. Admission for kids is eight dollars.One day 575 people entered the cave paying 5600 how many adults into the cave

5 0
3 years ago
Which pair of lines is parallel? A. y=4x+1 and y+4=5 B. y=-2+x and 2y-2x=-2 C. y=1/4x + 2 and y-2=1/2x D. y=1/5x+1 and 5y+x= 10
sdas [7]

Answer:

B. y=-2+x and 2y-2x=-2

Step-by-step explanation:

Two lines are parallel if they have the same slope.

The equation 0of a line is tipically written as y=mx + b, where 'm' represents the slope and 'b' the y-intercept.

Let's evaluate each of the options:

A. y=4x+1 and y+4x=5

Writing the equations in the slope-intercept form, we get:

y=4x+1 → m=4

y=5-4x → m=-4

Given that they have different slopes, they are not parallel.

B. y=-2+x and 2y-2x=-2

Writing the equations in the slope-intercept form, we get:

y=-2+x → m=1

y=-1 + x → m=1

Given that the equations have the same slope, they are parallel.

C. y=1/4x + 2 and y-2=1/2x

Writing the equations in the slope-intercept form, we get:

y=1/4x + 2  → m=1/4

y=1/2x+2 → m=1/2

Given that they have different slopes, they are not parallel.

D. y=1/5x+1 and 5y+x= 10

Writing the equations in the slope-intercept form, we get:

y=1/5x+1 → m=1/5

5y+x= 10 → y=2 - 1/5x → m=-1/5

Given that they have different slopes, they are not parallel.

4 0
3 years ago
Can someone please help!!
leva [86]

Answer:

Step-by-step explanation:

the last one

8 0
3 years ago
We’ve built a machine that follows these instructions:
DaniilM [7]
Hm
10 + 4 x 2 - 3
=10 + 8 - 3
=18 - 3
=15
5 0
2 years ago
Describe this number line and the numbers and fractions shown.
Step2247 [10]

Answer:

<em>This number line has negative and positive integers and that the negative fractions are in between each number so that means one side has positive integers and fractions and one side has negative fractions and integers</em>

Step-by-step explanation:

<em>the black lines would mean where the fractions and decimals are</em>

  • <em>Hope this helps</em>
  • <em>Hope this right </em>
  • <em>Ask questions</em>
7 0
3 years ago
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