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3 years ago

The function f(x) = a^x + 4 will never cross the x-axis if a is positive. True or False?

Mathematics

1 answer:

Jet001 [13]3 years ago

8 0

Answer:

True

Step-by-step explanation:

If a is negative then the shape of the graph is an upside down U, which intersects the x-axis. If a is positive it will never cross the X axis.

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What is the value of this expression? 3(68−12)+0.25

forsale [732]

Answer:

168.25

Step-by-step explanation:

Do the inside of the parentheses first then multiply then add.

3(56)+.25

168+.25=168.25

5 0

3 years ago

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Which table represents exponential growth?

bearhunter [10]

Answer:

Step-by-step explanation:

The exponential function $y=a^x$ shows the exponential growth if $a>1.$

Consider choice B.

If x=1, then $y=2=2^1;$

if x=2, then $y=4=2^2;$

if x=3, then $y=8=2^3;$

if x=4, then $y=16=2^4.$

This means that the function $y=2^x$ represents the table B.

7 0

3 years ago

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What are the solutions to 0=x^2-x+1?

kumpel [21]

Answer: No solutions

Step-by-step explanation:

There are no solutions to 0 = x² - x + 1.

[Method One]

We can solve this by rewriting the equation, but it is quicker to graph it when there are no solutions. See attached.

[Method Two]

I said we can solve this by solving an equation, here it is. We will use the quadratic formula since the equation given is already in the proper form.

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

$\displaystyle x=\frac{1\pm\sqrt{(-1)^2-4(1)(1)} }{2(1)}$

$\displaystyle x=\frac{1\pm\sqrt{-3} }{2}$

-> Negative numbers don't have real square roots, so there is no solution

4 0

2 years ago

15. A rectangular wooden gate with two diagonal boards across the front

frez [133]

cute ako☁

5 0

3 years ago

PLEASE ANSWER QUICKLY

GaryK [48]

We have that
1/4 x + 2/3 y = 5 ----> multiply by 12 both sides---> 3x+8y=60
1/2 x + 3/2 y = 11---> multiply by 2 both sides----> x+3y=22

therefore

the answer is the option
B. 3x + 8y = 60 ; x + 3y = 22

8 0

3 years ago

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