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3 years ago

What is the equivalent expression of 7p-(-5)+(-1)

Mathematics

1 answer:

lara31 [8.8K]3 years ago

3 0

Answer:

7p+4

Step-by-step explanation:

i think it is that becasue the negative sign in front of -5 cancels out the negative and now u have poisitive 5. Subract 1 from it and you get 4. Thus, the answers is 7p+4

Hope it helps!

-Angel Kraft

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A hot air balloon in flight begins to ascend at a steady rate of 120 feet per minute. After 1.5 minutes, the balloon is at an al

azamat

Answer:

The balloon will not reach 2,500 feet after 4 minutes.

Step-by-step explanation:

The equation of the line in the point-slope form is

$y-y_1=m(x-x_1)$

A hot air balloon in flight begins to ascend at a steady rate of 120 feet per minute, then the slope is

$m=120$

After $x_1=1.5$ minutes, the balloon is at an altitude of $y_1=2,150$ feet. This means, the line passes through the point (1.5, 2,150).

Substitute the slope and point coordinates into the equation:

$y-2,150=120(x-1.5)$

We know that after 3 minutes, the balloon is at an altitude of 2,330 feet. Check this:

$2,330-2,150=180\\ \\120(3-1.5)=120\cdot 1.5=180\\ \\2,330-2,150=120(3-1.5)$

Now, find the height after 4 minutes:

$y-2,150=120(4-1.5)\\ \\y=120\cdot 2.5+2,150=300+2,150=2,450$

Thus, the balloon will reach only 2,450 feet after 4 minutes.

4 0

3 years ago

Sneha went to a park 150m long and 80m wide. She took one complete round on its boundary. What is the distance covered by Sneha?

Blababa [14]

Answer:

460 m

Step-by-step explanation:

Boundary = perimeter

Perimeter = 2(length + width)

= 2(150 + 80)

= 2(230)

= 460 m

7 0

2 years ago

Read 2 more answers

Solve the equation 3x + 4 = 5x - 8

CaHeK987 [17]

Answer:

x = 6

Step-by-step explanation:

3x + 4 = 5x - 8

==> add 8 to both sides

in doing so we get 3x + 4 + 8 = 5x - 8 + 8

the -8 and the +8 cancels out and 4 + 8 = 12

we are left with 3x + 12 = 5x

==> subtract 3x from both sides

in doing so we get 3x - 3x + 12 = 5x - 3x

the 3x and -3x cancel out and 5x - 3x = 2x

we are left with 12 = 2x

==> divide both sides by 2

in doing so we get 12/2 which equals 6 and 2x/2x which leaves us with

6 = x

3 0

2 years ago

Read 2 more answers

PLEASE HELP!!! OFFERING 50 POINTS!!!!

Otrada [13]

Answer:

slope-intercept form y= -2/3 x + 490 slope is -2/3 y intercept is (0.490)

Step-by-step explanation:

2x+3y= 1470

3y= 1470-2x

y= 1470/3- 2/3 x

y= -2/3 x+ 490

slope is -2/3 and y intercept is 490 when x =0

the graph represent the amount of sandwiches that Sal's shop sold, where x is the number of sandwiches and y is the number of wraps sold. so that x won't exceed 735 sandwiches : 0≤x≤735 and 0≤ y≤490.

<u>total profit is 1593.</u>

2x+3y= 1593

y= -2/3 x + 531

similar : the two functions have the same slope -2/3

difference: 0≤ y≤531

0≤x≤796.5

the two line are parallel

7 0

3 years ago

Help me to answer this pls

zepelin [54]

The 6 angles with vertex P are:

Angle APB
Angle APC
Angle APD
Angle BPC
Angle BPD
Angle CPD

The letter P must be in the middle since this location is the vertex. Something like angle BPA is the same as angle APB. We can swap the order of the outer letters without any change to the angle itself. Effectively, this means each angle has two possible names.

8 0

2 years ago