Answer:
False.
Step-by-step explanation:
√x = -7 ... Square both sides
x = 49
This question is kind of tricky, and there's a few ways to look at it, but I think that's the most understandable. Another thing you can notice is that if x = -49, you can't take the square root of a negative value (unless you're including complex values with the imaginary "i"), or that the square root of a value is -7, the original value would have been (-7)*(-7) which gives you a POSITIVE 49, not a negative one.
<span>Visually impaired students averaged 8.14 hours of sleep with a standard deviation of 1.78 hours. Average sleep of the students will be 6.36.</span>
Answer:
4/63
Step-by-step explanation:
Multiple: 2/
5
* 2/
7
= 2 · 2/
5 · 7
= 4/
35
Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(4, 35) = 1. In the following intermediate step, the fraction result cannot be further simplified by canceling.
In other words - two fifths multiplied by two sevenths = four thirty-fifths.
Multiple: the result of step No. 1 * 5/
9
= 4/
35
* 5/
9
= 4 · 5/
35 · 9
= 20/
315
= 4 · 5/
63 · 5
= 4/
63
Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(20, 315) = 5. In the following intermediate step, cancel by a common factor of 5 gives 4/
63
.
In other words - four thirty-fifths multiplied by five ninths = four sixty-thirds.
Step-by-step explanation:
You make a T-chart of x and y and graph it, like this:
If x = 1, y = 5
x | y
0 | 4
1 | 5
2 | 6
3 | 7
4 | 8
on and on it goes. . .
Answer:
57
Step-by-step explanation:
parentheses first then multiply by 3