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3 years ago

Pls help i really need help

Mathematics

1 answer:

Lerok [7]3 years ago

5 0

Answer:

area=l×w

2 4/5=x × 1 1/5

14/5=6/5x

5/6×14/5=x

x=2 1/3cm

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Pls help me pls pls pls

3241004551 [841]

Answer:

B. A shirt costs $15, and a pair of shoes costs $20.

Step-by-step explanation:

Let s = price of 1 shirt.

Let p = price of 1 pair of shoes.

Adam:

5s + 4p = 155

Friend:

3s + 2p = 85

We have a system of simultaneous equations.

5s + 4p = 155

3s + 2p = 85

Rewrite the first equation. Multiply both sides of the second equation by -2 and write below it. Add the equations.

5s + 4p = 155

(+) -6s - 4p = -170

--------------------------

-s = -15

s = 15

A shirt costs $15.

Now we replace s with 15 in the first original equation and solve for p.

5s + 4p = 155

5(15) + 4p = 155

75 + 4p = 155

4p = 80

p = 20

A pair of shoes costs $20.

7 0

3 years ago

What is the difference between a linear function and a non linear function?

scoray [572]

Answer:

A difference is that a linear line is straight and a non linear is not

4 0

3 years ago

Which corresponds to the perimeter of triangle ABC?

____ [38]

Answer:

The answer to your question is: letter C

Step-by-step explanation:

Data

A (-5 , -1)

B (-2, 3)

C (6, -3)

Perimeter = ?

Formula

$d = \sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }$

distance AB $d = \sqrt{(-2 + 5)^{2} + (3 + 1)^{2} }$

$d = \sqrt{(3)^{2} + (4)^{2} }$

$d = \sqrt{(9 + (16) }$

$d = \sqrt{25}$

d = 5

Distance BC $d = \sqrt{(-3 - 3)^{2} + (6 + 2)^{2} }$

$d = \sqrt{(-6)^{2} + (8)^{2} }$

$d = \sqrt{36 + 64}$

$d = \sqrt{100}$

d = 10

Distance AC $d = \sqrt{(-3 + 1)^{2} + (6 + 5)^{2} }$

$d = \sqrt{(-2)^{2} + (11)^{2} }$

$d = \sqrt{4 + 121}$

$d = \sqrt{125}$

d = 11.2

Perimeter = 5 + 10 + 11.2

= 15 + $\sqrt{125}$

4 0

4 years ago

There are 5 puppies in a room. One puppy is 15 weeks, another is 9 weeks, another is 4 weeks, and another is 10 weeks. If the av

ANTONII [103]

Answer:

Step-by-step explanation:

If u add all 5 puppies ages together including the 7 week old one it will equal 45 divide that by 5 and you get an average of 9 weeks.

6 0

3 years ago

If you flip three fair coins what is the probability that you’ll get all three heads?

defon

Answer:

1/2

Step-by-step explanation:

4 0

3 years ago

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