Answer:
13.8
Step-by-step explanation:
If Points X and Z are on a number line and point Y partition line XZ into two parts where XY: YZ = 1:4, this can be expressed as;
XY/YZ = 1/4
cross multiply;
YZ = 4XY
Also, if the coordinate of X is 1.3, and the coordinate of Y is 3.8, then the distance XY will be expressed as XY = 3.8 - 1.3
XY = 2.5
YZ = 4(2.5)
YZ = 10
Since Y is at 3.8 and YZ is 10, then coordinate Z will be YZ + Y
coordinate of Z = 10+3.8
coordinate of Z = 13.8
A stock rises in value from $20 to $40. Then it decreases in value from $40 to $20. Is the percentage increase from $20 to $40 the same as the percentage decrease from $40 to $20? Explain.
Answer:
No
Step-by-step explanation:
To find how much something is a percent of another number, divide it by said other number
20/40 = 0.5
0.5 × 100 = 50%
The first one is a 50% increase
Then, 40/20 = 2
2 × 100 = 200%
It is a 200% decrease
So no, because 50% doesn't equal 200%
Answer number 8 please
Answer:
1/3
Step-by-step explanation:
The cone is three inches and the radius in one inch
Find the distance from point L to point M, if the point L has coordinates (-10,-9)
and the point M has coordinates (-2,6).
Answer:
The distance from point L to point M is 17
Step-by-step explanation:
Distance Between two Points in the Plane
Given two points A(x1,y1) and B(x2,y2), the distance between them is calculated as follows:
[tex]d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
Point L has coordinates (-10,-9) and point M has coordinates (-2,6).
Calculate the distance between L and M:
[tex]d=\sqrt{(6+9)^2+(-2+10)^2}[/tex]
[tex]d=\sqrt{15^2+8^2}[/tex]
[tex]d=\sqrt{225+64}=\sqrt{289}[/tex]
[tex]\boxed{d=17}[/tex]
The distance from point L to point M is 17
(1/2x +7)²
EXPAND IT PLEASE
Answer:
1/4x^2 + 7x + 49
Step-by-step explanation:
Use binomial theorem (a + b)^2 = a^2 + 2ab + b^2 to expand (1/2x + 7)^2
6-3x=5x-10x+20. What is the value of x?
Answer:
X=2
Step-by-step explanation:
Because it that is the answer
9 Consider the expressions (5.9 X 10^6) and (3.2 X 10^4).
Part A
Find the difference of the expressions.
Part B
Find the product of the expressions.
Answer:
I think the answer will be B 1-9x+C=32
Step-by-step explanation:
Krystal Ball's pulse rate is 30% higher than its normal rate of 70bpm. What is her pulse rate? After
lying down it decreased 20%. What is her heart rate now?
Starting bpm = 91
Resting bpm = 72.8
=========================================================
Explanation:
A 30% increase is represented by the multiplier 1.30 because
100% + 30% = 1.00 + 0.30 = 1.30
So Krystal's initial heart rate is 1.30*70 = 91 bpm.
If you wanted, you can think of it like this
30% of 70 = 0.30*70 = 21 is added onto the initial 70 bpm to get 70+21 = 91 bpm.
-----------
To decrease by 20%, we use the multiplier 0.80 since
100% - 20% = 1.00 - 0.20 = 0.80
Losing 20% of something means we keep the remaining 80%
So,
80% of 91 = 0.80*91 = 72.8 bpm.
-----------
Here's one way to find the final bpm in one single line
1.30*0.80*70 = 72.8
in which you could write it like this
(1 + 0.30)*(1 - 0.20)*(70) = 72.8
The second way may be a bit longer, but I find it's more descriptive to see where the percentage increases vs percentage decreases are.
100, 50, 0, -50, What is the common difference for the sequence
Answer:
d = - 50
Step-by-step explanation:
common difference is
50 - 100 = 0 - 50 = - 50 - 0 = - 50
When solving an ______, use inverse operations to undo the operations.
Answer:
equation
Step-by-step explanation:
Inverse operations are used to solve simple algebraic equations to more difficult equations that involve exponents, logarithms, and trigonometry. Mathematically, inverse operations are opposite operations. Addition is the opposite of subtraction; division is the opposite of multiplication, and so on.
[RevyBreeze]
Answer:
equation
Step-by-step explanation:
To isolate the variable, we must reverse the operations acting on the variable. We do this by performing the inverse of each operation on both sides of the equation. Performing the same operation on both sides of an equation does not change the validity of the equation, or the value of the variable that satisfies it.
For one particular homeroom, the typical ratio of students absent to students present is 1 : 14. One day, students from this same homeroom miss school to compete in a math competition. On that day, there are 22 students in class and the ratio of students absent to students present is 4 : 11. How many students are absent on a typical day for this homeroom?
Answer:
i THINK 43% but im not for sure
Step-by-step explanation:
14% of 50 is 7
so 50-7=43
43(percent there)+7(percent gone)=50 (number of students)
SO 43% is still there.
i hope this work for you
and SORRY if im wrong
Select the expression that has a value of 15.
4 + (8 x 4) ÷ 6 + 7
(4 + 8) x 4 ÷ 6 + 7
4 + 8 x 4 ÷ (6 + 7)
(4 x 8 x 4) ÷ 6 + 7
Answer:
Second option
Step-by-step explanation:
We will use the process of elimination to find the answer:
First option:
[tex]4+(8\times4)\div6+7[/tex]
[tex]8\times4=32[/tex]
[tex]4+32\div6+7[/tex]
[tex]4+32=36[/tex]
[tex]36\div6+7[/tex]
[tex]36\div6=6[/tex]
[tex]6+7=13[/tex]
[tex]=13[/tex]
Second option:
[tex](4+8)\times4\div6+7[/tex]
[tex]4+8=12[/tex]
[tex]12\times4\div6+7[/tex]
[tex]12\times4=48[/tex]
[tex]48\div6+7[/tex]
[tex]48\div6=8[/tex]
[tex]8+7=15[/tex]
[tex]=15[/tex]
Which means your answer is the second option or "4 + (8 × 4) ÷ 6 + 7."
Hope this helps.
Answer:
B
Step-by-step explanation:
if u answer u will get brainlist :)
Answer:
24.4 > 24.34
Step-by-step explanation:
Tenth place value can be any number more than the tenth value in 24.34.
In the decimal number 24.34, the tenth value is 3. So, it should be more than 3
Options can be any one of these
24.4 or
24.5 or
24.6
Answer:
Values (tenths) that would make the number comparison 24._ > 24.34 true would be:
- 4
- 5
- 6
24.40 > 24.34
24.50 > 24.34
24.60 > 24.34
All other options provided would make the left side of the comparison less than the right side of the comparison.
Step-by-step explanation:
Have a great rest of your day
#TheWizzer
its all on the picture giving brainiest and 100 points its also math
#1
(1,2)(2,4)Slope=
[tex]\\ \rm\Rrightarrow m=4-2/2-1=2[/tex]
Equation in point slope form
[tex]\\ \rm\Rrightarrow y-2=2(x-1)[/tex]
[tex]\\ \rm\Rrightarrow y-2=2x-2[/tex]
[tex]\\ \rm\Rrightarrow y=2x[/tex]
Graph attached
#2
(1,3)(2,6)Same like before
Equation of the line:-
[tex]\\ \rm\Rrightarrow y=3x[/tex]
Graph attached
Terry calculates how much wood he needs to build the desk shown in the diagram . He says the area is 600ft2
What error did terry make
Find the correct area and explain your answer
Answer:
He forgot to multiply by 1/2 when finding the area of the above triangle.
Now we find the correct area;
A = BH x 1/2 (formula for finding area of triangle)
A = 10 x 24 x 1/2
A = 240 x 1/2
A = 240/2
A = 120
Now the rectangle's formula which is just (W x L) where "w" is the width and "l" is the length;
A = W x L
A = 24 x 15
A = 360
Now we add both the sums of the two areas:
120 + 360 = 480 square feet, the information provided here is your explanation.
Is (2,-3) a solution to 3x + 7y = 14? Show work.
Answer:
its not a solution
Step-by-step explanation:
substitute the points
3(-2) + 7(-3) = 14
-6 - 21 = 14?
-27 = 14 X
If h(x) = x" for some positive constant a, and
h(27x) = 3h(x) for all positive values of x, what is
the value of a ?
By using the natural logarithm, we will see that the value of a is 0.33
How to get the value of a?
We know that:
h(x) = x^a
And we know that:
h(27x) = 3h(x).
We can rewrite this as:
(27x)^a = 3*(x)^a
And remember that we can distribute exponents, so the left side can be rewritten as:
(27*x)^a = (27^a)*(x^a)
Then we have:
(27^a)*(x^a) = 3*(x)^a
This means that:
27^a = 3
Now remember the rule:
ln(x^n) = n*ln(x)
If we apply the natural logarithm to both sides, we get:
ln(27^a) = ln(3)
a*ln(27) = ln(3)
a = ln(3)/ln(27) = 0.33
If you want to learn more about the natural logarithm, you can read:
https://brainly.com/question/13473114
There are 3 circles and 12 squares. What is the simplest ratio of circles to squares?
Answer:
1:4
Step-by-step explanation:
3 goes to 12 four times
Read the screenshot thanks
Answer:
do your self use your brain picture turmtottgejs s
Step-by-step explanation:
ײ8;49☆☆(3) swcond equqtio
Who ever gets it right I will give Brainly and 20 points
Answer:
Circumference of a circle:
c=2πrc=πddistance around a circleArea of a circle:
A=πr²measured in square units(radius) (1/2 circumference)evaluate 7-(-19)-18+(-19)+18
Answer:
The answer is 7
Step-by-step explanation:
7-(-19)=26
26-18=8
8+(-19)=(-11)
-11+18=7
A line passes through the origin, and is perpendicular to the line y = –2x + 6. Find the equation of the line.
Step-by-step explanation:
compare the equation with : Y=mX+C
then, for slope of perpendicular equation
m1×m2= -1
As the coordinates lies in origin it is (0,0)
then use the formula of equation of line
write the equation of the line that passes through the point (0, 3) and is perpendicular.
please help me solve this :)
Answer:
y = 2x + 3
Step-by-step explanation:
to find the perpendicular line then you have to find the negative reciprocal which is 2 and to get that you flip the fraction and change the sign so
(-1/2) → 2/1 or 2
the y-intercept coordinate is (0, 3) so the y-intercept is 3
Slope of the Perpendicular line=2
passes through (0,3)Equation of line in point slope form
[tex]\\ \rm\Rrightarrow y-3=2x[/tex]
[tex]\\ \rm\Rrightarrow y=2x+3[/tex]
Write the following expression using an exponent.
1x7x7x7x7x7
Answer:
Think it is x^35
Step-by-step explanation:
Hopefully I didn't misinterpret
A plane intersects a prism to form a cross section that is a polygon with five sides. The minimum number of sides that the polygon at the base of the prism must have is?
Answer:
the base must have a minimum of 3 sides
Step-by-step explanation:
Answer:
It's 3
Step-by-step explanation:
333333333333333333333333333333333333333333333333333333333333333333333333333333
Dilate the figure with the origin as the center of dilation.
(x,y) → (0.5x, 0.5y)
Answer:
see attached
Step-by-step explanation:
The dilation factor of 1/2 moves each point to half its previous distance from the origin.
Which is the value of this expression when m = 3 and n = negative 5?
(6 m Superscript negative 1 Baseline n Superscript 0 Baseline) Superscript negative 3 HELP PLZZ
Answer:
Start Fraction - 1 Over 8 - End Fraction
(6m-1n0) -3
= (6m-1x1) -3
= (6/m) -3
= (m/6) 3
= (3/6) 3
= (1/2) 3
= 1/8
1/8 is your answer. Hope it helps!
Answer:
The answer is 1/8
what's the perimeter of this triangle
Answer: 60
Step-by-step explanation: if you count the length and the width and multiply them you will get your answer, i did 15 (amount of units going down) and 8 (amount of unites going sideways) and multiplied them, 15 x 8 = 120 then half of that is 60
After a successful Friday night at the local BDubs, 92% of the daily allocated wings were sold to restaurant-goers. The kitchen staff was a bit upset because that meant there were only 96 wings left between them to take home at the end of night. How many wings did BDubs start off with that night?
Answer:
88
Step-by-step explanation:
92% = 0.92
0.92(96) = 88.32
88 is rounded to the nearest wing
What time is it for y'all for me, it's 12:06am-midnight any of you guys times different
Answer:
4 am for me you probably live somewhere in america though
please help???????? ASAP