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3 years ago

Hi help me please, I can't seem to figure this one out

Mathematics

1 answer:

Nastasia [14]3 years ago

7 0

Answer:

x= 2.73cm

1cm : 0.6828 = 4cm : 2.73cm

For the same angle we just work out 1cm first.

a^2+ b^2= c^2

0.82^2 + b^2 = 1^2 = changing to units 10

6.724 + b^2 = 10

10-6.724 = 2.276

Then x 3 and change units down by 10= 0.6828

Step-by-step explanation:

Below shows why we must convert to mm from cm

a^2+ b^2= c^2

0.82^2 + b^2 = 1^2 =

0.6724 + b^2 = 1

1 - 0.6724 = b = 0.2276

0.2276 x 3 = 0.6828 cm

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3 years ago

One canned juice drink is 20% orange juice, another is 5% orange juice, how many liters of each should be mixed together in orde

gavmur [86]

Answer:

11 L of 20% juice and 4 L of 5% juice

Step-by-step explanation:

Let

x L = amount of 20% juice

y L = amount of 5% juice

20% juice:

Amount = x L

Amount of juice $=0.2x$ L

5% juice:

Amount = y L

Amount of juice $=0.05y$ L

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We mixed x L of 20% juice with y L of 5% juice to get 15 L of 16% juice, so

$x+y=15$

and

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From the first equation:

$x=15-y$

Substitute it into the second equation:

$0.2(15-y)+0.05y=2.4\\ \\20(15-y)+5y=240\\ \\300-20y+5y=240\\ \\-20y+5y=240-300\\ \\-15y=-60\\ \\15y=60\\ \\y=4\ L\\ \\x=15-4=11\ L$

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3 years ago

Javier writes an integer on a piece of paper. The absolute value of his number is less than 4. Which is true of the possible val

alex41 [277]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

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algol13

Answer:

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Step-by-step explanation:

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3 years ago

HELP PLEASE I ONLY HAVE UNTIL 11pm can someone solve 6x^2+12x=5x+3 ( quadratics)

Lostsunrise [7]

Answer:

Well, if I did my math correctly your answer is: x = {-1.5, 0.3333333333}.

Step-by-step explanation:

(Please see attachment for an explanation.)

Have a great day/night! ^^

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3 years ago

Hi help me please, I can't seem to figure this one out​

Hi help me please, I can't seem to figure this one out