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2 years ago

M,n how much is it in math

Mathematics

1 answer:

Elena-2011 [213]2 years ago

4 0

Answer:

you can't really determine how much letters equal if there is not an equation but it represents variables that stand for integers

Step-by-step explanation:

hope this helps have a good rest of your night :) ❤

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In a sale there is 25% off all prices a bed costs £33 how much was it before the sale ?

Troyanec [42]

25% OFF is 100%-25%=75%
75% is 0.75 in decimal form
if x is the original price then
0.75x=33
x=33/0.75= £44

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2 years ago

Please help asap really important

kirill115 [55]

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2 years ago

Simplify 7 -(-4) + 3(-6).<br> 0-7<br> 07<br> -9<br> 9

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It’s -7
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2 years ago

Read 2 more answers

A bookstore sells cookbooks, novels and reference books. The ratio of the number of

Elena-2011 [213]

Step-by-step explanation:

<h3> cookbooks : novels </h3><h3> 2 : 11 </h3><h3> So 6 : 33 </h3>

<h3> cookbooks : reference books </h3><h3> 3 : 4 </h3><h3> So 6 : 8 </h3>

novels : cookbooks : reference books

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1 year ago

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Nuts Galore sells a trail mix containing dried banana chips, roasted almonds, and chocolate chips that sells for $6.52 per pound

KengaRu [80]

Answer:

$x = 28$ ----- Banana

$y = 54$ ----- Almonds

$z = 18$ ---- Chocolate

Step-by-step explanation:

Let

$x \to$ banana

$y \to$ almonds

$z \to$ chocolate

So, we have:

$x + y + z = 100$ --- total used

$4x + 8y + 6z = 652$ -- i.e. 6.52 * 100 --- total sales from 100 pounds

$y = 3z$

Required

The number of pounds of each (i.e. x, y and z)

Substitute $y = 3z$ in $x + y + z = 100$

$x + 3z + z = 100$

$x + 4z = 100$

Make x the subject

$x = 100 - 4z$

Substitute $y = 3z$ in $4x + 8y + 6z = 652$

$4x + 8 * 3z + 6z = 652$

$4x + 24z + 6z = 652$

$4x + 30z = 652$

Substitute $x = 100 - 4z$

$4(100 - 4z) + 30z = 652$

$400 - 16z + 30z = 652$

Collect like terms

$- 16z + 30z = 652-400$

$14z = 252$

Divide by 14

$z = 18$

Substitute $z = 18$ in $x = 100 - 4z$

$x = 100 - 4 * 18$

$x = 100 - 72$

$x = 28$

To calculate y, we have:

$y = 3z$

$y = 3 * 18$

$y = 54$

6 0

2 years ago

M,n how much is it in math​

M,n how much is it in math