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2 years ago

I need the answer too all of these:

Mathematics

2 answers:

nlexa [21]2 years ago

8 0

1.) 8x

2.) 7 + 5x

3.) 11x + 1

4.) 7x + 14

5.) 2

6.) 4x + 6

7.) 8x - 5

8.) 2x - 3

ollegr [7]2 years ago

7 0

1. 8x
2.5x+7
3.11x+1
4.7x+15
5.2
6.4x+6
7.8x-11
8.2x-3

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Madison wants to buy a new iPhone. The regular price is $989. Apple is offering a 15% discount and a sales tax of 7% is added af

Rzqust [24]

Answer: $899.50

Step-by-step explanation:

6 0

2 years ago

Find the value of the expression<br> m + m + 9<br> for m = 4, n = 3, and r= 1.

Artist 52 [7]

Answer:

Step-by-step explanation:

both m's substitute for 4

4+4+9

8+9

5 0

2 years ago

Read 2 more answers

Samantha has chickens and sheep on her farm. Each chicken has two legs and each sheep has four legs. Each chicken has one head a

krok68 [10]

Answer:

There are 29 chickens and 19 sheep.

Step-by-step explanation:

Samantha has chickens and sheep on her farm.

Let the number of chickens be c.

Let the number of sheep be s.

Each chicken has one head and each sheep has one head.

She looked out one day and counted 48 animal heads. Each chicken has one head and each sheep has one head.

This means that the number of chickens and sheep add up to 48:

c + s = 48 ____________(1)

She also counted 134 legs. Each chicken has one head and each sheep has one head. This means that:

2c + 4s = 134 ________(2)

From (1),

c = 48 - s ____________ (3)

Put (3) in (2):

2(48 - s) + 4s = 134

96 - 2s + 4s = 134

Collecting like terms:

2s = 134 - 96

2s = 38

s = 38 / 2 = 19

Putting this back in (3):

c = 48 - 19

c = 29

There are 29 chickens and 19 sheep.

4 0

2 years ago

Line PQ passes through the points P(-5,-13) and Q(5,17) what is the equation of line PQ in standard form

PSYCHO15rus [73]

Answer:

$3x - y = - 2$

Step-by-step explanation:

The given line PQ passes through the points P(-5,-13) and Q(5,17) .

Find the slope using the formula:

$m = \frac{y_2-y_1}{x_2-x_1}$

Plug in the points to get:

$m = \frac{17 - - 13}{5 - - 5}$

$m = \frac{30}{10}$

$m = 3$

Use the point-slope formula :

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

Substitute the point (5,17)

$y - 17 = 3(x - 5)$

Expand:

$y - 17 = 3x - 15$

The standard form is when the equation is put in the form

$ax + by = c$

Regroup the terms to get:

$3x - y = - 17 + 15$

The standard form is

$3x - y = - 2$

8 0

3 years ago

Simplify the following expression. 8-3(-12x + 2)

Viktor [21]

8-3(-12x+2)
=8+-3(-12x+2)
=8+36x+-6
=36x+2

8 0

3 years ago