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Nookie1986 [14]
3 years ago
9

Find the value of the expression 3x for the following values of x when x = 10

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

Answer:

A) 30

Step-by-step explanation:

3*10=30

A 30

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Marina86 [1]
The answer to number 13 questions is 1198
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4 years ago
I need help with easy math​
spin [16.1K]

Answer: x = -1 and y = 9

The two equations are:

-9x + 2y = 23

-4x -y = -3

Now find for x in the first equation...

-9x + 2y = 23

-9x = 23 - 2y

x = (23 - 2y)/-9

Now place this value of x in the second equation and find for y...

-4{(23-2y)/-9} - y = -3

-92 + 8y + 9y = -3 * -9

17y = 27 + 92

y = 119/17

y = 7

Now place the value of y in the first equation," -9x + 2y = 23 " and find x

-9x + 2*7 = 23

-9x + 14 = 23

-9x = 23-14

x = 9/-9

x = -1

There you go! Hope it helps

<h2>૮꒰ ˶• ༝ •˶꒱ა </h2><h2>./づᡕᠵ᠊ᡃ࡚ࠢ࠘ ⸝່ࠡࠣ᠊߯᠆ࠣ࠘ᡁࠣ࠘᠊᠊° </h2>

i shoot u >:(

<h2> </h2><h2>૮꒰ ˶> ༝ <˶꒱ა </h2><h2>./づᡕᠵ᠊ᡃ࡚ࠢ࠘ ⸝່ࠡࠣ᠊߯᠆ࠣ࠘ᡁࠣ࠘᠊᠊°.~♡︎ </h2>

with love tho-

7 0
3 years ago
Using Pythagorean inequalities, determine which of the following sets of values can represent the lengths of the sides of an acu
seropon [69]

Answer:

<h2>c. 6, 7, 8</h2>

Step-by-step explanation:

a,\ b,\ c-\text{sides of a triangle}\\\\\text{If}\ a\leq b< c\ \text{and}\ a^2+b^2=c^2,\ \text{then it's the lengths of the sides of a right triangle}\\\\\text{If}\ a\leq b\leq c\ \text{and}\ a^2+b^2>c^2,\ \text{then it's the lengths of the sides of a acute triangle}\\\\\text{If}\ a\leq b< c\ \text{and}\ a^2+b^2

\text{Triangle condition:}\\\text{That each side has to be shorter than the sum of the other two sides}\\\text{and longer than their difference.}\\\\\text{If}\ a\leq b\leq c,\ \text{then}\ a+b>c.

--------------------------\\a.\\a=1,\ b=2,\ c=3\\\\a+b=1+2=3=c\\\\\text{These are not the lengths of the sides of the triangle.}\\----------------------------\\b.\\a=6,\ b=8,\ c=10\\\\a+b=6+8=14>10=c\qquad OK\\\\a^2+b^2=6^2+8^2=36+64=100\\\\c^2=10^2=100\\\\a^2+b^2=c^2\\\\\text{It's the right triangle.}\\----------------------------

c.\\a=6,\ b=7,\ c=8\\\\a+b=6+7=13>8\qquad OK\\\\a^2+b^2=6^2+7^2=36+49=85\\\\c^2=8^2=64\\\\a^2+b^2>c^2\\\\\text{It's the acute triangle.}\\----------------------------\\d.\\a=4,\ b=6,\ c=10\\\\a+b=4+6=10=c\\\\\text{These are not the lengths of the sides of the triangle.}

6 0
3 years ago
A newborn baby gained 9/16 of a pound in 1/4 of a month. What was the baby's growth rate in pounds per month?
UNO [17]
The answer is 2 1/4 because you're trying to find the unit rate. 
9/16             1
-------   =   -------
 1/4              x
You cross multiply
9/16x = 1(1/4)
And solve for x, which gets you to two and a fourth.  
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3 years ago
Gina is buying a used car that has an advertised price of $4500. She is buying the car on credit and must make a down payment of
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Answer:

4896

Step-by-step explanation:

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