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3 years ago

PLEASE help ASAP im begging you

Mathematics

2 answers:

Annette [7]3 years ago

7 0

Answer:

only d is true since 5(3) = 15, which is greater than 14. 2.8 times 5 is exactly 14, so a and b don't make sense

Step-by-step explanation:

Hunter-Best [27]3 years ago

3 0

Answer:

#16 answer is D

#12 answer is A

Step-by-step explanation:

The reason #16 is D is because, if the variable "Y" is 1.5 then that would make the inequality 7.5 > 14. This is NOT true. If "Y" were 2, then it would be 10 > 14. This is NOT true either. If "Y" were 2.8, then that would make it 14 > 14. THIS IS NOT true either. BUT if it was 3, then that would make it 15 > 14. Which IS true.

Now the reason #12 is A is because the sign " $\geq$ " means "Greater than or equal to, no less then." And the SHORTEST/ Minimum height is 42 $\frac{1}{2}$ inches.

Hope this helps!

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Y = 3x y = -x + 4 write the question in coordinate form

postnew [5]

Answer:

(x,y) (1,3)

Step-by-step explanation:

3x=-x+4

+x +x

4x=4

*divide/simply*

x=1

y=3(1)

y=3✓

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3 years ago

Given the system of equations:

mr_godi [17]

Answer:

Step-by-step explanation:

Given the system of equations:

2x + 3y = 15

X + 3y = 0

What is x?

2x + 3y = 15

X + 3y = 0 subtract the bottom equation fron the top one

2x - x + 3y - 3y = 15 - 0 see how the 3y - 3y equates to zero

2x - x = 15

x = 15 Now for extra credit what is y?

X + 3y = 0

15 + 3y = 0

15 - 15 + 3y = 0 - 15

3y = -15

3y/3 = -15/3

y = -5

-15

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3 years ago

The answer to this equation

12345 [234]

Answer:

x=3

Step-by-step explanation:

We are given the equation

$log5x=log(2x+9)$

This can be rewritten as

$log5x-log(2x+9)=0$

Now using the quotient rule for logarithms we can combine these two

$log(\frac{5x}{2x+9} )=0$

Next we can remove the log by using an inverse operation

$10^{log(\frac{5x}{2x+9} )} =10^0\\\\\frac{5x}{2x+9}=1$

Now we can solve for x

$\frac{5x}{2x+9}=1\\\\5x=2x+9\\\\3x=9\\\\x=3$

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4 years ago

Graph on the number line all values of x that satisfy 2x+2/x+7 >= 0

LiRa [457]

All values of x that satisfy 2x+2/x+7 >= 0 are represented as x >= -1

<h3>How to graph the inequality on a number line?</h3>

The inequality expression is given as:

2x+2/x+7 >= 0

Multiply both sides by x + y

2x+2 >= 0

Subtract 2 from both sides

2x > -2

Divide both sides by 2

x >= -1

Hence, all values of x that satisfy 2x+2/x+7 >= 0 are represented as x >= -1

See attachment for the number line of x >= -1