Answer:
-6° F
Step-by-step explanation:
need help on this geometry problem! ASAP
Answer:
x=75
Step-by-step explanation:
[tex]We\ are\ given\ that:\\AD\ is\ the\ altitude\ of\ \triangle ABC\\Hence,\\ADC=90[As\ altitudes\ intersect\ the\ base\ side\ at\ 90]\\Hence,\\As\ ADC=(x+15)\ and\ ADC=90\\x+15=90\\x=90-15\\x=75[/tex]
This is only the value of x in terms of AD being an altitude, and is independent off the sides.
if x,4x+3 and 7x+3 are geometric sequence. find the value of x
please help me
Answer:
x = [tex]\frac{-6}{7+\sqrt{13}}[/tex]
r = [tex]\frac{1+\sqrt{13} }{2}[/tex]
Step-by-step explanation:
In mathematics, a geometric progression, also known as a geometric sequence, is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-one number called the common ratio.
For example, the sequence 2, 6, 18, 54, ... is a geometric progression with common ratio 3. Similarly 10, 5, 2.5, 1.25, ... is a geometric sequence with common ratio 1/2.
-----
Let's take r=ratio of the geometric sequence
in first term, x is multiplied by [tex]r^{0}[/tex]
First term: x [tex]r^{0}[/tex]
Second term: 4x+3 = x [tex]r^{1}[/tex]
Third term: 7x+3 = x [tex]r^{2}[/tex]
From the last 2 equation, we have to obtain r and x values.
Second equation - First equation:
3x = x r (r - 1)
Let's state: x different from 0, so we can simplify x, obtaining:
3 = [tex]r^{2}[/tex] - r
0 = [tex]r^{2}[/tex] - r - 3
r = [tex]\frac{1+\sqrt{13} }{2}[/tex] (only the positive value of r counts)
so, going to second term of the sequence:
4x+3 = x [tex]r^{1}[/tex] => x (4 - [tex]\frac{1+\sqrt{13} }{2}[/tex] ) = -3
x ([tex]\frac{7+\sqrt{13} }{2}[/tex] ) = -3 => x = [tex]\frac{-6}{7+\sqrt{13}}[/tex]
hope it helps..
Which table does not represent a function
Answer:
B.
Step-by-step explanation:
B. table B has 2 y values for one x, and that makes it not a function but a relation / equation.
What is the solution to the system of equations below?
y= 1/2x+6 and y=-3/4x-4
(-8, 2)
(-8,-1)
(8, 10)
(8.-10)
Answer:
A(-8, 2)
Step-by-step explanation
Answer: A
Step-by-step explanation: (-8, 2)
Explain how to calculate this mentally
1. 15is the percentage of
30
2. 3 is what percentage of 12
3. Six is what percentage of 10
Answer:
1. 50℅
2. 25℅
3. 60℅
hope it helps.
Answer:
Below.
Step-by-step explanation:
1. Divide 15 by 30 which is 1/2.
Then multiply 1/2 by 100 = 50%.
2. 3/12 = 1/4
1/4 * 100 = 25%
3. 6/10 = 0.6
0.6 * 100 = 60%.
PLEASE HELP!
Find the measure of
Answer:
85
Step-by-step explanation:
if ur adding 5 on that side then you would have to subtract on the other.
Charles drove three times as far as Emily. Altogether they drove 112 miles. What was the number of miles driven by Charles?
Answer: Charles drove 84 miles
Step-by-step explanation:
(c)harles = 3 x (e)mily
e + c = 112
Since Charles is 3x Emily, we can plug in 3e instead of c
e + 3e = 112
4e = 112
e = 112/4
e = 28
Emily drove 28 miles, and Charles drove 3x that, so Charles drove
28 x 3 = 84
ILL GIVE BRAINEST HELP PLEASEE IM FAILING
THERE ARE 4 QUESTIONSSSS!!!!!!
1.) Choice B
p= b+h+c
SA= bh + pl
p=15+20+25 = 60
SA= 15(20) + 60(30) = 2100
2.) Choice D
V= lwh
V= (40)(22)(23.5)
V= 20680
1 liter = 1000cm^3
1L = x
1000cm 20680
x= 20.7 liters
3.) Choice B
V= (1/3)a^2(h)
V= (1/3)9^2(6.5)
V= 175.5
4.) I don't know this
help and hurryyy plzz
Use the Distributive Property and mental math to find the product.
5(88) =
Answer:
440
Step-by-step explanation:
I learned with parenthesis if its like this 4(7)
It usually means to multiply
soo
88 times 5
=440
soo
88
Please help it’s urgent!!!!!
Please
Answer:
-10
Step-by-step explanation:
Because it's counting down by 4s so the mid would be 10 between the -12 and -8
Which expression is equivalent to 1/3 y?
1/3(y+12)-12
1/6y+1/3(y+3)
1/6y+1/6(y+12)-2
1/3y+1/3(6-y)
Answer:
The answer is 1/6y+1/6(y+12)-2
Step-by-step explanation:
I used a math calculator.
Answer:
1/3y+1/3(6-y)
HELP!!! PLEASE HELP ME!
how might it be possible for the black people and white people to die at approximately the same age, but for the median age for the white people to be higher
Answer:
Step-by-step explanation:
because we are weaker
Approximately 54% of mathematics students do their homework on time. In a class of 250 students, what is the mean, variance, and standard deviation if we assume normality and use the normal distribution as an approximation of the binomial distribution?
A) Mean = 135 Variance = 62 Standard Deviation = 8B) Mean = 53 Variance = 62 Standard Deviation = 8C) Mean = 54 Variance = 8 Standard Deviation = 62D) Mean = 135 Variance = 8 Standard Deviation = 62
Answer:
A) Mean = 135 Variance = 62 Standard Deviation = 8
Step-by-step explanation:
Given that :
Proportion (p) = 54%
Sample size (n) = 250
Using Normal approximation :
Mean = np
Mean = 250 * 0.54 = 135
Variance = npq ; q = 1 - p = 1 - 0.54 = 0.46
Variance = (250 * 0.54 * 0.46) = 62.1 = 62
Standard deviation = √variance = √62.1
Standard deviation = 7.8803553 = 8
The table shows the heights h(in feet) of a sponge t seconds after it was dropped by a window cleaner on top of a skyscraper
See attachment for the scatter plot created using the graphing calculator
The best fitting quadratic model for the data is h = -16t^2 + 280The sponge will hit the ground after 4.18 secondsA. Use a graphing calculator to create a scatter plotThe table of values is given as
Time, t 0 1 1.5 2.5 3
Height, h 280 264 244 180 136
Next, we enter the above values in a graphing calculator to create the scatter plot
See attachment for the scatter plot created using the graphing calculator
B. Find the best fitting quadratic model for the data
From the graphing calculator, we have
h = -16t^2 + 280
C. Use your model to predict when the sponge will hit the groundThis means that
h = 0
So, we have
-16t^2 + 280 = 0
Divide through by -16
So, we have
t^2 - 17.5 = 0
This gives
t^2 = 17.5
Take the square roots
t = 4.18
Hence, the sponge will hit the ground after 4.18 seconds
Read more about scatter plot at
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Complete question
The table shows the heights h(in feet) of a sponge t seconds after it was dropped by a window cleaner on top of a skyscraper
Time, t 0 1 1.5 2.5 3
Height, h 280 264 244 180 136
A. Use a graphing calculator to create a scatter plot
B. Find the best fitting quadratic model for the data
C. Use your model to predict when the sponge will hit the ground
1. What value of x makes the equation 3x - 6 = 9 true?
Answer:
5
Step-by-step explanation:
this is basic algebra so it's important to understand this concept now. you need to combine like terms so 3x-6=9 becomes 3x=15 (you add the 6 to add like terms). You then divide the 3 from 3x on both sides to get x=5
The value of x makes the equation 3x - 6 = 9 true is: x = 5.
Here, we have,
given that,
the equation is: 3x - 6 = 9
so have,
3x-6=9
We need to combine like terms
=> 3x = 9 + 6
(we add the 6 to add like terms).
becomes, => 3x=15
we then divide the 3 from on both sides
=> 3x/3 = 15/3
we get
=> x=5
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Suppose you invest in a fund which
.
• compounds at a rate of 1% at the end of every odd-numbered month (January, March, May, July.
September, November), and
.
• compounds at a rate of 3% at the end of every even-numbered month (February, April, June, August.
October, December).
How much do you need to invest on January 1st so that you have $1000 by June 1st of the same year?
The amount to invest on January 1st so that you have $1000 by June 1st of the same year is $992.54
What is monthly compounding?
Monthly compounding means that the interest is computed every month, in essence, the interest in January, March and May would be 1% divided by 12 months in a year whereas the interest in February, April, would be 3% divided 12 months making a year.
FV=PV*(1+r1)*(1+r2)*(1+r3)+(1+r4)*(1+r5)
FV=the future value June 1st of the same year=$1000
PV=the amount that needs to be invested=unknown
r1=January interest rate=1%/12=0.00083333333333
r2=February interest rate=3%/12=0.0025
$1000=PV*(1+0.00083333333333
)*(1+0.0025
)*(1+0.00083333333333
)*(1+0.0025
)*(1+0.00083333333333
)
$1000=PV*1.00752085996961
PV=$1000/1.00752085996961
PV=$992.54
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Write the equation of the line that passes through the given points.
(0,-5) and (3,3)
The equation of the line is
(Simplify your answer. Type your answer in slope-intercept form. Use in
[tex]\displaystyle\\Answer:\ y=\frac{8}{3}x-5[/tex]
Step-by-step explanation:
(0,-5) (3,3)
Equation of a straight line:
[tex]\displaystyle\\\frac{x-x_1}{x_2-x_1} =\frac{y-y_1}{y_2-y_1} \\\\x_1=0\ \ \ \ x_2=3\ \ \ \ y_1=-5\ \ \ \ y_2=3\\\\Hence,\\\\\frac{x-0}{3-0} =\frac{y-(-5)}{3-(-5)}\\\\\frac{x}{3} =\frac{y+5}{3+5} \\\\\frac{x}{3} =\frac{y+5}{8} \\[/tex]
Multiply both parts of the equation by 24:
[tex](8)(x)=(3)(y+5)\\8x=(3)(y)+(3)(5)\\8x=3y+15\\8x-15=3y+15-15\\8x-15=3y[/tex]
Divide both parts of the equation by 3:
[tex]\displaystyle\\\frac{8}{3}x-5=y[/tex]
Mrs. Claus makes a
delicious fruitcake that
serves 11 people. There are
14 fruitcakes on the table.
How many people will this
feed?
Answer:
14 or 11
Step-by-step explanation:
because 14 is more than 11 and the question asks how many people it feeds not how many people can it feed out the people there
Answer:
I Believe It Will Feed 154 People
Step-by-step explanation:
Because 1 Fruit Cake feeds 11 people so I did 11*14
She said a delicious FRUITCAKE that
serves 11 people. Then she said there are 14 FRUITCAKES.
Please Mark Brainliest!!!!
Equations and Inequalities
pls help
Answer: B=5
Step-by-step explanation:
if you plug 5 in for B, the equations equal to each other
6(5)-2=5(5)+3
30-2=25+3
28=28
NOW plug in each number to show the work (even though we already know it’s 5)
The length of a rectangle is 12 inches more than its width. The perimeter is 280 inches. Find the length and the width of the rectangle.
Answer:
width = 64 inches
lenght = 76 inches
Step-by-step explanation:
2(x + 12) + 2x = 280
2x + 24 + 2x = 280
4x = 280 - 24
4x = 256
x = 256/4
x = 64
8th grade math
Thanks
Answer:
h - g goes with 3, gh goes with 2, g squared minus h goes with 5, g - h goes with 1, g + h goes with 3, and g + h squared goes with 6. The numbers are the options.
Step-by-step explanation:
Not much to say. Just remember that squared numbers can't be negative.
There are four activities on the critical path. Coincidentally, their standard deviations are all equal to 4. The standard deviation of the critical path is therefore equal to:
Answer:
the standard deviation of the critical path is 8
Step-by-step explanation:
The computation of the standard deviation of the critical path is shown below:
As we know that
Variance = Standard deviation^2
Now the variance of the critical path is
= Variance 1 + variance 2 + variance 3 + variance 4
= 4^2 + 4^2 + 4^2 + 4^2
= 64
Now the standard deviation would be
= √64
= 8
hence, the standard deviation of the critical path is 8
if the fourth term of an ap is 1 and sum of it first right term is 18 find the tenth term
Pls help me and thank you if you help me out
Answer:
I think it would be C.
Step-by-step explanation:
One is positive Four is negative so is 1+(-4)
If f(x) = 4x² - 6x + 3, find f(a - 4).
∫f(x)dx=43x3−3x2+7x+Cf(x)=4x2−6x+7∫f(x)dx=∫(4x2−6x+7)dx=4⋅∫x2dx−6⋅∫xdx+7⋅∫1dx=4x33−6x22+7x11+C=43x3−3x2+7x+C
Find the derivation of y=sin (2x2 + 3x-4)<br />a. -cos (4x +3) b. -(6x2+3) cos (2x3+3x-4) c. Cos (2x3+3x-4)<br />d. (6x3+3) cos (2x3+3)<br />
Let y = f(x)
f(x) = sin x
g(x) = (2x^2 + 3x - 4)
Use the chain rule.
We want y' = f' (g(x)) • g'(x).
y' = cos(2x^2 + 3x - 4) • (4x + 3)
Done.
1. 3x - 5< 19
3x - 5+<19+
38 <
3x :
x<
Answer:
Love you
Step-by-step explanation:
Write an absolute value equation that has the solutions x=8 and x=18
.
Answer:
|x - 13| = 5
Step-by-step explanation:
Think of absolute value as a distance. For example, |5| can be written as |5 - 0| = 5 since the distance between 5 and zero on the number line is 5. Also, |-5| which is the same as |-5 - 0| is also 5 since the distance between -5 and zero on the number line is 5.
Since you want an absolute value equation with solutions 8 and 18, think of which number is the same distance from both 8 and 18 on the number line? Find the average of 8 and 18, (8 + 18)/2 = 13. 13 is the same distance from both 8 and 18. 13 is 5 units away from both 8 and 18. Now you need an equation that is looking for the numbers x which are 5 units distance from 13.
|x - 13| = 5