I found nothing difficult in factoring as calculator would do the work while graphing is too troublesome for a few marks worth of question
i prefer factoring

7 0

3 years ago

Read 2 more answers

What is the value of 7s in4777

marissa [1.9K]

The value of the 7's in 4777 from left to right is 7= 700 then 7= seventy and 7 = 7.

That is the hundreds place, the tens place, and the ones place,

7 0

4 years ago

There is no prior information about the proportion of Americans who support the gun control in 2018. If we want to estimate 99%

Romashka-Z-Leto [24]

Answer: 13

Step-by-step explanation:

If the prior population proportion is unavailable then the formula to find the sample size is given by :-

$n=0.25(\dfrac{z^*}{E})^2$

, where z* = Critical z-value

E = margin of error

Let p be the proportion of Americans who support the gun control in 2018.

As per given , we have

Confidence level = 99%

The critical z-value for 99% confidence interval is 2.576 ( BY z-table)

Margin of error : E= 0.36

Since there no prior information about the proportion of Americans who support the gun control in 2018.

So , the required sample size to estimate 99% confidence interval would be:

$n=0.25(\dfrac{2.576}{0.36})^2=0.25(7.16)^2$

$n=0.25(51.2656)=12.8164\approx13$

Hence, 13 Americans should be surveyed.

3 0

3 years ago

The average rate of change of f(x)=3x+9 is 9. true or false?

MA_775_DIABLO [31]

The rate of change is the slope.
f(x) is the same as y...
f(x) = 3x + 9.....y = 3x + 9....and in y = mx + b form, the rate of change(slope) can be found in the m position.

y = mx + b
y = 3x + 9....so the slope or rate of change is 3...not 9...so answer is false

7 0

3 years ago