Answer:
y = 542 years
Step-by-step explanation:
Given that,
The regression equation, y= 4.39x-6.77 is used to predict the age of a tree.
y is age of a tree and x is diameter
Put x = 125 cm
Put the value of x in above equation.
y = 4.39(125)-6.77
=548.75 - 6.77
= 541.98
or
y = 542
So, the tree is 542 years old.
8. Ms. Morgan is a science teacher. She found that 30% of her 120 students are athletes. Mr. Gregory is a math teacher. He found that 27, or 15%, of his students are athletes. Of the part, the whole, and the percent, which information is still unknown to Ms. Morgan? Find this unknown value. a. b. Of the part, the whole, and the percent, which information is still unknown to Mr. Gregory? Find this unknown value.
Answer:
A=30%
B=27
Step-by-step explanation:
The angle measurements in the diagram are represented by the following expressions.
B
А
Solve for x and then find the measure of
Answer:
[tex]x = 20^{\circ}[/tex]
[tex]\angle A = 150^{\circ}[/tex]
Step-by-step explanation:
Given
[tex]\angle A = 8x - 10[/tex]
[tex]\angle B = 3x + 90[/tex]
See attachment
From the attachment A and B are vertically opposite.
This implies that:
[tex]\angle A = \angle B[/tex]
Substitute values for A and B
[tex]8x - 10 = 3x + 90[/tex]
Collect Like Terms
[tex]8x - 3x = 10 + 90[/tex]
[tex]5x = 100[/tex]
Solve for x
[tex]x = \frac{100}{5}[/tex]
[tex]x = 20^{\circ}[/tex]
Substitute 20 for x in [tex]\angle A = 8x - 10[/tex]
[tex]\angle A = 8 * 20 - 10[/tex]
[tex]\angle A = 150^{\circ}[/tex]
what is the quotient? can someone please help.
Answer:
-3
Step-by-step explanation:
hope this helps
Indira is using a number line to add Negative 1 + (negative 3). She begins by showing –1 on the number line, as shown below.
A number line going from negative 5 to positive 5. The area between negative 1 and 0 is highlighted.
What is the sum of Negative 1 + (negative 3)?
–4
–3
2
3
Answer:
-4
Step-by-step explanation:
The triangle is rotated 90 degrees clockwise around the pount (0,0)
Answer:
(2,6)
Step-by-step explanation:
Option:B
The triangle is rotated 90 degree clockwise around the point (0,0). The point is (-6,2) is made to rotate. The image so formed is at the point (2,6).
Between what two multiples of ten is 328
Answer:
It's between 32 (which is 320) and 33 (which is 330).
Step-by-step explanation:
328 / 10 = 32.8
The value of the square root of 14 is between which two integers?
I NEED HELP!!!!! :)))))
Answer:
in very much deed you do need help :)))))))
Answer:
Area of the triangle is :-----[tex] \huge\boxed{\frac{1}{2} \times base \times height} \\ [/tex]
[tex] \frac{1}{2} \times 10 \times x = 50 \\ x = \frac{50 \times 2}{10} \\ \boxed{x = 10}[/tex]
10 units is the right answer.Solve.
-|-10|+ (-3) + |5|=
A. -18
B-8
C. 8
D. 12
E18
Answer:
The answer is for-|-10|+(-3)+|5|=-8 which is B
Calculate the correlation coefficient, r, for the data below.
This question is incomplete, the complete question is;
Calculate the correlation coefficient, r, for the data below.
X = -10 -8 -1 -4 -6 -7 -5 -3 -2 -9
Y = -15 -13 4 -4 -7 -11 -6 -2 1 -13
Answer: the correlation coefficient, r, for the data is 0.9896
Step-by-step explanation:
Given the data in the question;
correlation coefficient r = ?
we know that, C_Coeff is;
r = [ (Zn(∑xy) - (∑x)(∑y) ] / [ √[( n∑x² - (∑x)²) ( n∑y² - (∑y)²)] ]
so ;
X Y X² Y² XY
-10 -15 100 225 150
-8 -13 64 169 104
-1 4 1 16 -4
-4 -4 16 16 16
-6 -7 36 49 42
-7 -11 49 121 77
-5 -6 25 36 30
-3 -2 9 4 6
-2 1 4 1 -2
-9 -13 81 169 117
∑ -55 -66 385 806 536
now we substitute our values into the formula
r = [ (10×536 - (-55)(-66) ] / [ √[( 10×385 - (-55)²) ( 10×806 - (-66)²)] ]
r = 1730 / √( 825 × 3704 )
r = 1730 / √3055800
r = 1730 / 1748.0846
r = 0.9896
Therefore the correlation coefficient, r, for the data is 0.9896
Multiply The polynomials. (3x^2+4x+4)(2x-4)
Answer:
6x^3 - 4x^2 - 8x - 16
Step-by-step explanation:
6x^3 + 8x^2 + 8x - 12x^2 - 16x - 16
combine
6x^3 - 4x^2 - 8x - 16
there are 36 playing tag at recess. this is 6 times as many playing hopscotch. which model shows this comparison?
i got the top one to the left (checking my answer)
Answer:
The top left one is correct.
Step-by-step explanation:
We can rewrite this as an algebraic expression simply so it's easier to read.
Let's say hopscotch is [tex]h[/tex]. Tag is 6 times [tex]h[/tex], or [tex]6h[/tex].
That means for every 1 unit of hopscotch, there are 6 units of tag.
The top left one is correct.
Pleaseee help!!!!!!!!
Answer:
no
Step-by-step explanation:
no
I think this is right but want to check need help 25 points!!!
Answer:yes your Most definitely correct
Step-by-step explanation:
24/7 as a fixed number
Answer: 24/7 as a mixed number is 3 3/7
Answer:
3 3/7 (mixed number)*
There are two identical bottles. One bottle contains 2 green balls and 1 red ball. The other contains 2 red balls. A bottle is selected at random and a single ball is drawn. What is the probability that the ball is red
Answer:
2/3
Step-by-step explanation:
P(b1) = probability of bottle 1 = 1/2
P(b2) = probability of bottle 2 = 1/2
Bottle 1 = 2 green, 1 red ; total = 3
P(red ball1) = 1/3
Bottle 2 : red balls = 2, total balls = 2
P(red ball2) = 2/2 = 1
P(red ball) = [p(b1) * p(redball1)] = 1/2 * 1/3 = 1/6
P(red ball) = [p(b2) * p(redball2)] = 1/2 * 1 = 1/2
1/6 + 1/2 = (1 + 3) / 6 = 4/6 = 2/3
SOMEONE PLEASE PLEASE HELP ME ON THIS!!
X=22
14 plus 8 gives you x
[tex]\frac{x}{20} =\frac{14}{8} \\x=\frac{14}{8} \times 20=35[/tex]Answer:
35
Step-by-step explanation:
Can y’all help me solve this.
Please!!!!!!!
9514 1404 393
Answer:
all statements are true
Step-by-step explanation:
The line 4y=-16 can be rewritten to standard form as ...
y = -4 . . . . a horizontal line with all points having y-coordinate = -4
__
The line 3x = 27 can be rewritten to standard form as ...
x = 9 . . . . a vertical line with all points having x-coordinate = 9.
__
All of the statements about these lines are true.
A weather report stated that the monthly rain amounts for the past three months were 15.82 inches, 17.4 inches, and 9.56 inches.
What is the total amount of rainfall for the three months?
A. 27.12 inches
B. 41.178 inches
C. 42.42 inches
D. 42.78 inches
Answer:
42.78 inches
Step-by-step explanation:
The anount of rainfall for the past three months are
15.82 inches
17.4 inches
9.56 inches
Therefore the total amount of rainfall for the three months can be calculated as follows
= 15.82+17.4+9.56
= 42.78
Hence the total rainfall for three months 42.78 inches
can someone older tell me if i should drop out of high school and why or not
Hello there maybe you shouldn't drop out of highschool because you might find some opportunities and um its your choice.
What is the image of (−8,−8) after a dilation by a scale factor of 1/2 centered at the origin?
Answer:
(-4,-4)
Step-by-step explanation:
Since this is centered at (0,0), we have to multiply the x and the y coordinates by the scale factor.
-8 × 1/2 = -4
jester has a piece of wood measuring 1 and 2/3 m.he needs to cut in pieces measuring 3/4 m. long.how many pieces of wood did jester cut.
Answer:
2
Step-by-step explanation:
Given that,
Jester has a piece of wood measuring 1 and 2/3 m = 5/3 m
He needs to cut in pieces measuring 3/4 m
We need to find the number of pieces. Let there are x no. of pieces.
[tex]x=\dfrac{\dfrac{5}{3}}{\dfrac{3}{4}}\\\\=\dfrac{5}{3}\times \dfrac{4}{3}\\\\=2.23\[/tex]
or
x = 2
So, he will cut it into approx 2 pieces.
Which expression is equivalent to the measure of <4 in the image below?
M<1+m<2
M<1+m<3
M<2+m<6
M<5+m<6
Answer: a
Step-by-step explanation:
Which graph represents all of the solutions of
Step-by-step explanation:
Solve the inequality for b
-15b <= 45 divide both sides by -15, since you're dividing by a negative number switch the direction of the sign.
b >= -3
So, your number line is all values of b greater than or equal to -3. Since it is including -3, the circle will be filled and increase to the positive.
A line passes through the origin and has a slope of 1/2 witch of the following points does the line not pass threw
Step-by-step explanation:
ahhhhhh let's see probably 1,4
Evaluate x - 20 when x=3
Answer:
-17
Step-by-step explanation:
Plug in 3:
3 - 20 =
Solve:
3-20 = -17
Answer:
-17
Step-by-step explanation:
I replaced 3 for x, I solved the equation 3-20, which is equal to -17
Find the slope intercept equation of the line
PLEASE HELP ME!!!!!
Answer:
y = -x + 6Step-by-step explanation:
Slope-intercept form:
y = mx + b, where m is slope and b is y-interceptWe see on the graph y-intercept is b = 6, point (0.6)
To find the slope we need a second point, choosing point (5, 1)
Using slope formula:
m = (1- 6)/(5 - 0) = -5/5 = -1So the line is:
y = -x + 6Answer:
y = -4/5x + 5
Step-by-step explanation:
the formula for slope intercept is y=mx+b.
m represents the slope of the line and b is the y intercept. all you have to do is replace those variables.
the y intercept is the point where the line crosses the y-axis (the line going up and down on the graph). (0,5) is the y intercept and so 5 would replace b in y=mx+b
so far we have y=mx+5
The slope is the vertical change between two points is called the rise, and the horizontal change is called the run. Starting from a point on the line you would move vertically until you're in line with another point. In this case, let's just use (0,5) from before. You would go up four to line up with a point. Then, move horizontally to meet up with the point and count the units, which is five here. And so, the slope would be 4/5.
And then you get the equation:
y=4/5x+b
A triangle has one angle that measures 42°. Which of the following could be the measures of the other two angles?(1 point) 54° and 84° 42° and 42° 90° and 58° 102° and 216°
Answer:
54° and 84°
Step-by-step explanation:
i just took test
GreatestCommonFactor of 18 and 35
Answer:
1
Step-by-step explanation:
Hope this helps
Ryan planted 1/6 of his garden with green peppers and 1/6 of his
garden with red peppers. He said that he planted 1/3 of his garden
with peppers. Draw a model and a number line to show that he is
correct.
Answer:1/6 plus 1/6 is 1/3
Step-by-step explanation: