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Ghella [55]
3 years ago
15

AdhkjAhkmhdj help me please

Mathematics
1 answer:
kirza4 [7]3 years ago
7 0
4x+2x=84
3x+5y=126
5x+4y=?
--------------------
cerco la x nella prima equazione:
4x+2y=84 
x=(84-2y)/4
x=(42-y)/2
-------------------------------------------------------------------------
cerco la y nella seconda equazione, sostituendo la x:
3x+5y=126
3[(42-y)/2]+5y=126
y= -18
------------------------------------------------------------------------
cerco la x della nella equazione, sostituendo la y:
4x+2y=84
4x+2(-18)=84
x=30
---------------------------------------------------------------------------------------------------
cerco i totale nella terza equazione, sostituendo i valori della x e della y:
5x+4y= ?
5*30 + 4*(-18)= 150-72 = 78

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Please Help.
Gennadij [26K]
Answer:
amount of nuts = 2 pounds
amount of dried fruit = 4 pounds

Explanation:
We are given that x is the amount of nuts and y is the amount of dried fruit.
We are also given that:
1- Hunter needs to make 6 pounds of trail mix. This means that:
x + y = 6
This can be rewritten as:
x = 6 - y .........> equation I
2- x costs $4 per pound, y costs $3.5 and Hunter can spend a total of $22. This means that:
4x + 3.5y = 22 ..........> equation II

Substitute with equation I in equation II and solve for y as follows:
4x + 3.5y = 22
4(6-y) + 3.5y = 22
24 - 4y + 3.5y = 22
24-22 = 4y-3.5y
2 = 0.5y
y = 4 pounds

Substitute with y in equation I to get the value of x as follows:
x = 6-y
x = 6-4
x = 2 pounds

Hope this helps :)

7 0
3 years ago
What's the equivalent
olga2289 [7]

9 1/2 = 19/2

(29/5) / (19/2)

When changing division to multiplication, flip the number (right hand side).

(29/5) * (2/19)

58/95

7 0
3 years ago
A. For every 6 hours she works, her earrings go up by $1.
grandymaker [24]

Answer:

the answer is c

Step-by-step explanation:

as it shows on the graph every hour the earrings increase by 6$

6 0
2 years ago
A macaroni and cheese recipe calls for 2/5 of a 2 1/2 pound a block of cheese. How many pounds are needed?​
Helga [31]

I

2/5 of 2.5. = 2x2.5 / 5x1 = 5/5 = 1 pound

8 0
2 years ago
What if you quadruple the radius of a circle. What happens to the circumference? Explain using examples.
Stells [14]

Step-by-step explanation:

Let's check

  • Let radius be x

Circumference:-

➜2πr

➜<u>2πx</u>

  • New radius=3x

New Circumference:-

➜2πr

➜2π3x

➜6πx

<u>Takin</u><u>g</u><u> </u><u>ratio</u><u>:</u><u>-</u>

➜2πx/6πx

➜1/3

➜1:3

<h3>Thus,</h3>

If we quadruple the radius Circumference will also be quadrupled.

7 0
2 years ago
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