All categories

3 years ago

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

You might be interested in

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. 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

20% juice:

Amount = x L

Amount of juice $=0.2x$ L

5% juice:

Amount = y L

Amount of juice $=0.05y$ L

16% juice:

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 Slove for x?

IRINA_888 [86]

Let's review:
Inverse Operations:
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