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yaroslaw [1]
3 years ago
12

Can someone please explain to me in detail on how to do this please?

Mathematics
1 answer:
Dima020 [189]3 years ago
4 0

Answer:

1. x = 3.5 + -0.75y

2. y = 3 + 2x

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Can anybody help me with my work
nadya68 [22]

Answer:

$5.75

Step-by-step explanation:

14.25 divided by 5= 2.85

2.85+2.85=5.75

7 0
2 years ago
Read 2 more answers
What is the length of the unknown leg
likoan [24]

Answer:

6 mm

Step-by-step explanation:

Use the Pythagorean Theorem to solve for the unknown leg

a^{2} +b^{2}=c^{2}

Since we need to solve for a, we will manipulate the equation in terms of b and c → a=\sqrt{c^{2}-b^{2}  }

Here,  b = 7 mm and c = \sqrt{85} mm

Plugging these numbers into our equation gives us a=\sqrt{(\sqrt{85})^{2} -(7)^{2}  } →\sqrt{85-49} = \sqrt{36} = 6 mm

6 0
2 years ago
Which of the following is a trinomial?
Masja [62]
Although you didn't provide any answer choices:

A trinomial is an expression with exactly three terms that can't be combined an example would be this

x^2 - 3x + 1

None of those terms can be combined

x^2 + 3 - 4 has three terms but it isn't considered a trinomial because you can simplify it to x^2 - 1 which is known as a binomial because it has 2 terms in it's simplified form.

hope this helps C:
5 0
3 years ago
Read 2 more answers
(HELP ASAP PLEASE!!)
Doss [256]

Answer:

Each shirt cost $<u>7</u>  and each pair of shorts cost $<u>17</u> .

Step-by-step explanation:

let shirts be represented as x

let shorts be represented as y

Younger brother spent $79 on 4 new shirts and 3 pairs of shorts.

4 x + 3 y = $79    .......equation 1

Older brother purchased 7 new shirts and 8 pairs of shorts and paid a total of $185.

7 x + 8 y = $185  .......equation 2

multiply equation 1 by 7 and equation 2 by -4 and add both equations to get the value of y.

7 × (4 x + 3 y = $79)     ⇒             +28 x + 21 y = $553

-4 × (7 x + 8 y = $185)  ⇒             <u> -28 x - 32 y = - $740</u>

                                                          0   - 11 y   = - $187     ⇒  -11 y   = - $187

y = \frac{- $187}{- 11}   ⇒   y = $17

shorts = y = $17

put value of y in equation 1

4 x + 3 ( $17 ) = $79  ⇒    4x + $51 = $79   ⇒   4x = $79 - $51

4x = $28   ⇒  x = \frac{$28}{4}   ⇒   x = $7

Shirts = x = $7

8 0
2 years ago
The manager of a softball team needs to prepare a batting lineup using her 9 starting players. How many different lineups can sh
Irina-Kira [14]
I'm not 100% sure I'm just trying to help. I've seen this question before and I believe the answer was <span>362,880, but that seems like an a full lot to me personally, but like I said just trying to help. :)</span>
7 0
2 years ago
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