Answer:
The right triangle has one 90 degree angle and two acute (< 90 degree) angles. Since the sum of the angles of a triangle is always 180 degrees... The two sides of the triangle that are by the right angle are called the legs... and the side opposite of the right angle is called the hypotenuse.
Step-by-step explanation:
Answer:
y=3x
Step-by-step explanation:
hope this helps!
Answer:
-4
Step-by-step explanation:
(-7)(-1) = -8
-8+4 = -4
Answer:
Step-by-step explanation:
Hello!
You have to estimate the mean length of 4000 b.c. human skulls trough a 95% confidence interval.
You know that
n= 6 human skulls
= 94.2mm
S= 4.9
Assuming that the variable X: length of a 4000b.c. human skull (mm) has a normal distribution, to construct the interval you have to use the t statistic:
[
±
]

[94.2 ± 2.571 *
]
[89.06; 99.34]mm
With a 95% confidence level you'd expect the interval [89.06; 99.34]mm to contain the value for the average skull length for humans 4000 b.c.
I hope this helps!
You can use a guess and check method.
We know .50halfdollar
we know .05 nickels
.50(26) + (.05)(8)=$13.40
13.00+.40=13.40
So, 26 half dollars and 9 nickels