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Yanka [14]
3 years ago
14

What is 0.69¯¯¯¯ expressed as a fraction in simplest form? Enter your answer in the box.

Mathematics
1 answer:
Ghella [55]3 years ago
6 0
I belive its 3.555 because i took a educational guess lol
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What is .368 written in expanded form?
olganol [36]

The expanded form could be:

.300+.060+.008

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3 years ago
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High grade steel consists of 85% iron and 15% magnese. Low grade steel consists of 67% iron and 33% mag ese. NASA orders 500 ton
Mamont248 [21]

Answer:

361\dfrac{1}{9} tons of high steel and 138\dfrac{8}{9} tons of low steel

Step-by-step explanation:

Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

In x tons of high grade steel there are

0.85x tons of iron

0.15x tons of magnese

In y tons of low grade steel there are

0.67y tons of iron

0.33y tons of magnese

NASA orders 500 tons of steel, so

x+y=500

and specifies that it must be in the proportion 80% iron and 20% magnese, so

0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400

From the first equation,

x=500-y

Substitute it into the second equation:

0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons

7 0
3 years ago
A bag contains 12 pieces of candy. In how many weighs can 4 pieces be selected
igomit [66]

Answer:

495

Step-by-step explanation:

From 12, choose 4:

₁₂C₄ = 12! / (4! (12−4)!)

₁₂C₄ = 12! / (4! 8!)

₁₂C₄ = 495

3 0
3 years ago
BRAINLIESSTTTT!!!!
andrew11 [14]

7.211; Starting from the left to right, x1=3 x2=7, y1=2 y2=8. Plug these in to the distance formula \sqrt{(x2-x1)^2+(y2-y1)^2

(7-3)^2+(8-2)^2

(4)^2+(6)^2

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sqrt 52

7.211

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3 years ago
Which number is between 1/6th and 1/4th
bazaltina [42]
1/5...
This question should be relatively easy for a high schooler...
 
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3 years ago
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