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netineya [11]
3 years ago
5

CAN SOME HELP ME PLEASE IT'S DUE IN 10 MINS​

Mathematics
1 answer:
sasho [114]3 years ago
6 0

Answer:

Step-by-step explanation:the first one

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A karat equals 1/24 part of gold in an alloy [ eg 9 karat gold is 9/24 gold]. How many grams of 9 karat gold must be mixed with
irinina [24]
This is a mixture problem.

Let the 9 karat gold to be mixed be x. The 18 karat would weight (200 - x). Since the total = 200g.

mass1 * karat1 + mass2*karat = total mass * total carat

Let mass1 be x g.          mass 2 would be = (200 -x)
karat 1 = 9                    karat 2 = 18 

Total mass = 200g.
Total karat = 14.

9*x  + 18*(200 -x) = 14*200

9x + 18*200 - 18*x = 14*200

18*200 + 9x - 18x = 14*200

3600 - 9x = 2800

3600 - 2800 = 9x

800 = 9x

9x = 800

x = 800/9

x ≈ 88.89

Therefore 88.89 grams of 9 karat gold must be mixed.
7 0
2 years ago
Tiffany turkey and tonya turkey were sharing a pecan pie for dinner. Tiffany Turkey said they had eaten 2/3 of the pie, while To
OLEGan [10]
Both are correct, since 4/6 is simplified to 2/3.
7 0
3 years ago
Jacques and Aaron both started this year at 5.65 feet tall. Jacques has grown 0.2 feet since then. Aaron has grown twice that am
OLga [1]
It is 5.69 positively sure of it good luck on youre quiz if youre taking one!


7 0
3 years ago
What is the solution to x - 9 > -15? x < -6 x > -6 x < -24 x > -24
Talja [164]
Here you go!! Hope my answer also assists you in the future!! :))

4 0
3 years ago
I don’t understand how to do this
Simora [160]
It's looking for the measures

m<F + m<G = 180°

(4x)° + (8x)° = 180°

12x = 180°
÷12 ÷12


x = 15

check your work

m<F + m<G = 180°

(4x)° + (8x)° = 180°

4(15)° + 8(15)° = 180°

60° + 120° = 180°
3 0
3 years ago
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