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malfutka [58]
3 years ago
5

I need help on 19 and 20. Please help me. Please don’t put a link. Please help me.

Mathematics
1 answer:
lianna [129]3 years ago
6 0

Answer:

19:

4  <   third side    <   14  

20:

3  <   third side    <   13  

Step-by-step explanation:

hint: go to http://www.17 28.org/trianinq.htm

(fix the space between 17 and 28)

you're welcome xx

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A Cheetah running at 61 miles per hour is chasing an American Antelope that is running
Nataly_w [17]

Answer:

Cheetah

Step-by-step explanation:

American Antelope's speed = 94980 meters per hour

                                            = 59 miles per hour

The Cheetah is faster than the American Antelope

3 0
3 years ago
7. The value of y varies directly with x, and y = 8 when x = 2.<br> Find y when x = 10.
lesya692 [45]
Y= 40 explanation don’t want to just trust me it’s 40
4 0
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

<u>20% juice:</u>

Amount = x L

Amount of juice =0.2x L

<u>5% juice:</u>

Amount = y L

Amount of juice =0.05y L

<u>16% juice:</u>

Amount = 15 L

Amount of juice =0.16\cdot 15=2.4 L

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

0.2x+0.05y=2.4

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

4 0
4 years ago
the sum of two different numbers x and y is 70 and the differences when the smaller number is subtracted from the larger number
Bad White [126]

Answer:

1000

Step-by-step explanation:

Lets just say x is the bigger number. We can create two equations.

x + y = 70

x - y = 30

If we add these equations together, we get that:

2x = 100

and that

x=50

Plugging x back into any of the equations gets us that y = 20, so xy = 20*50 = 1000

5 0
4 years ago
Read 2 more answers
9x+3=3x+9<br><br>Slove for x?
IRINA_888 [86]
Let's review: 
<span><u>Inverse Operations:</u>
</span>Inverse Operations are operations which undo each other!
I'll give the following Inverse Operations in this form.

Operation -> Inverse Operation

Addition -> Subtraction
Subtraction -> Addition

Multiplication -> Division
Division -> Multiplication

That's all of them we'll need to know to solve this problem! 

9x + 3 = 3x + 9

First Step!: Move all of the variables to once side (Numbers with x in them). (Prioritize the lower one so we won't need to work with negative numbers) Subtract 3x on both sides (Subtract, because the number is positive) 

9x - 3x + 3 = 3x - 3x + 9

3x - 3x = 0 

9x - 3x + 3 = 9 

Move the 3 to the right by subtracting it on both sides. 

9x - 3x + 3 - 3 = 9 - 3

3 - 3 = 0 
9 - 3 = 6

9x - 3x = 6 

Subtract like terms. (Just like you would subtract 9 - 3). Note that they are only like terms, because they both have the same variables (x) that are the same power (1).

6x = 6 

Divide 6 on both sides to get your answer.

6x/6 = 6/6 

The 6's cancel out and we are left with 1 on the left AND right, because 6/6 = 1. 

x = 1

Plug x in to check.

9(1) + 3 = 3(1) + 9 

9 + 3 = 9 + 3 

Those are definitely equal!

I hope that helped. If it did then consider giving me the brainliest answer. Thanks.
8 0
3 years ago
Read 2 more answers
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