Answer:
47 days
Step-by-step explanation:
Since the patch of pads doubles in size every day, the lake would be half covered just one day before it was covered entirely.
You estimate that a jar contains 98 marbles. The actual number of marbles is 90. Find a percent of error.
Answer:
It might be 8.8889% (Not completely sure)
marsha deposited $9,500 into a savings account 3 years ago. The simple interest rate is 5%. How much money did marsha earn in interest?
Answer:
$ 10, 925
Step-by-step explanation:
Interest = P( 1 + rt)
9500 { 1 + ( 0.05 x 3 ) }
= 9500 x 1.15
= $ 10,925
Use the given data to find the best predicted value of the response variable x. Ten pairs of data yield r=0.003 and the regression equation y=2+3x, and it is determined that is not a good model. Also, the mean of y values= 5.0. What is the predicted value of y for x=2
Answer:
Step-by-step explanation:
Given the regression equation :
y=2+3x
Mean of y values ; y = 5.0
Where y is the predicted variable ; x = predictor variable
The predicted value of y for X = 2
Null: H0 = 5
Alternative H1 : ≠ 5
Sample size (n) = 10 pairs
Degree of freedom = n - 2 = 10 - 2 = 8
When James family went on the road to the carnival they were stuck in traffic. After a 20 minutes they are were 30 more miles left, after 35 minutes passed. How many more miles are left? If the fair is 58 miles away?
Answer:
They would be 5.5 miles away because if you take 20 divided by 20 to get 1 minute you would have to take 30 divided by 20 to get 1.5 miles per 1 minute. Then you would have to take 1 times 35 to get 35 minutes and you would have to take 1.5 times 35 to get 52.5. Then lastly you would take 58 miles and subtract 52.5 to get 5.5 miles therefor your answer would be 5.5 miles.
Step-by-step explanation:
The highest point in the mountains of Seattle is 5,833 meters above sea level. The lowest point in the valley is 57 meters below sea level. What is the difference between the highest and lowest point?
Answer: 5890 meters
Step-by-step explanation:
Given: The highest point in the mountains of Seattle is 5,833 meters above sea level.
The lowest point in the valley is 57 meters below sea level.
in integers it is represented by -57 meters. [we use negative integer to represents "below"]
Difference between the highest and lowest point = Highest point - lowest point
= 5,833 meters -(-57) meters
= (5833 + 57) meters [a-(-b)= a+b]
= 5890 meters
Hence, the required difference = 5890 meters
nient and Units
Question 8 of 10
Which unit of measure would be appropriate for the volume of a sphere with a
radius of 2 meters?
A. Centimeters
B. Square meters
C. Cubic meters
D. Meters
create an expression that represents the complete factorization of p(a)=36a^3-16a
What is the value of x and the length of segment DE?
E
F
1.5 = 2x + 3
2. 10x + 15 = 9(9)
9
2x+3
x=
Length of DE =
units
D
5
С
Answer:
x= 6.6 Length of DE= 16.2
Step-by-step explanation:
I got it right on edge
Can someone explain this to me please?
Answer:
Option C
Step-by-step explanation:
Since, measure of all sides of the triangle has been given in the picture,
By applying cosine rule in the given triangle,
AC² = AB² + BC² - 2(AB)(BC)cos(B)
11² = 16² + 16² - 2(16)(16)cos(B)
121 = 256 + 256 - 512.cos(B)
121 - 512 = - 512.cos(B)
cos(B) = [tex]\frac{391}{512}[/tex] = 0.763672
B = [tex]cos^{-1}(0.763672)[/tex]
B = 40.2°
Therefore, measure of angle B is 40.2°.
Option C is the answer.
what is the percentage
Answer:
a percentage is a part of 100 or a fraction over 100
A publisher makes books for a number of distributors. For one book, the charge to the distributor is represented by a fixed cost of $3000 plus $16 per book. a) How much would 600 books cost b) what is the cost per book if 600 are ordered c) what is the cost per book if 1000 are ordered
Answer:
a. $12,600
b. $21
c. $19
Step-by-step explanation:
a) The cost is $3000 plus $16 per book
For 600 books, we have
3000 + 16(600)
= 3000 + 9600 = $12,600
b) Cost per book will be;
12,690/600 = $21
c) for 1000
= 3000 + 16(1000)
= 3000 + 16,000 = 19,000
cost per book is 19,000/1000 = $19
SOLVE FOR x:3+2(8x-1)=5+4(4x-6)
I'm giving you brainliest if your right
Answer:
you must have wrote it wrong there is no solution.
Step-by-step explanation:
jamal goes out for a coffee and a cake with his three friends. He has only £15.00 on him. He bought 4 coffees at £1.85 each and 4 identical cakes. The barista gave Jamal £2.20 change. Will Jamal’s change be enough to buy him 2 more cakes to take home to his mum and dad?
What is the x-value in the solution to this system of linear equations?
2x − y = 11
x + 3y = −5
−3
−1
2
4
Answer:
(7, -3)
Step-by-step explanation:
Solve the system of linear equations
2x − y = 11
x + 3y = −5
by elimination by addition and subtraction. Multiply the second equation by -2, obtaining
2x - y = 11
-2x - 6y = 10
------------------
-7y = 21, which yields y = -3
Knowing that y = -3, we can now find the value of x. Let's use the first equation for this purpose. Substituting -3 for y, we get:
2x - (-3) = 11, or
2x = 11 + 3, or 2x = 14. Thus, x = 7.
The solution is (7, -3).
Answer:
-3
Step-by-step explanation:
8. 3x+10=14y
8х -7y= 34
Answer:
hey, are these two questions or one simultaneous question?
List the angles of the triangle from SMALLEST to LARGEST .
Answer:
<L,<K,<M
Step-by-step explanation:
angle M us the largest angle I think
Graph each number on a number line write an inequality that is true for the numbers
Answer:
Step-by-step explanation:
Copies from other websites are no good on Brainly. We’re sure you can rephrase and use your own words
A college cafeteria pays student cashiers $540 per hour. Cashiers earn an additional
$110 per hour for each hour worked over 35 hours per week. A cashier worked 39
hours one week and 37 hours the second -week. Show and explain to the cashier how her salary
would be calculated in this two-week period?
Answer:
total hr worked = 39 + 37 = 76 hr
salary per hr = 110 $
so total salary = 110 * 76 = 8360$
Mario walked at rate of 2/3 mile every 10 minutes. What was his walking rate in miles per hour?
Answer:
900 miles
Step-by-step explanation:
i took the quiz and got one-hundred percent
Complete the table and then graph the function. y= – 4x+34
Answer:
That is what your graph should look like.
Step-by-step explanation:
Annabelle went to the grocery store and bought bottles of soda and bottles of juice.
Each bottle of soda has 30 grams of sugar and each bottle of juice has 1o grams of
sugar. Annabelle purchased 3 times as many bottles of juice as bottles of soda and
they all collectively contain 120 grams of sugar. Graphically solve a system of
equations in order to determine the number of bottles of soda purchased, T, and the
number of bottles of juice purchased, y.
Answer:
120 = 3y + t
Step-by-step explanation:
120 = 3y + t because you purchase 3 times as many y then t. Overall, your answer should end up as 120 by using an equation like this.
Evaluate the expression when b=4 and x= -5
-9x+b
A line has a slope of -2 and a y-intercept of –3. Graph the line using the slope and y-intercept.
Which of the following points lie on this same line? Check all that apply.
(–2, 0)
(–1.5, 0)
(–6, 9)
(2, –3)
(3, –9)
(–4, 4)
Answer & Step-by-step explanation:
First write the line equation.
y=mx+b is the format where m=slope, b= y intercept
y=-2x-3
plug each x in to see if they match the point
y= -2(-2) -3 = -4 - 3 = -7 ; the point is (-2,0) so NO
y= -2(-1.5) -3= 3-3 = 0; point is (-1.5, 0) so YES it matches
y= -2(-6) -3 = 12-3 = 0; point matches so YES
y= -2(2) -3 = -4-3 = -7; point is (2, -3) so NO
y = -2(3) -3 = -6-3= -9; point matches so YES
y= -2(-4)-3 = 8-3 = 5; point is (-4, 4) so NO
(-1.5, 0) & (-6, 9) & (3, -9)
please give thanks by clicking the heart button :)
Answer:
the answers are B C E
Step-by-step explanation:
-1,5, 0
-6, 9
3, -9
write an equation in slope-intercepts form for the line that passes through (5, -4) and is perpendicular to the line described by 2x-10y=0
EXPLAIN what you did in each step to arrive at your answer plz
Answer: [tex]y=-5x+21[/tex]
Step-by-step explanation:
In slope intercept form : y=mx+c , m= slope , c= y-intercept.
Let [tex]L_1[/tex] be the line passing through (5, -4) and perpendicular to [tex]L_2: 2x-10y=0[/tex].
Rewrite [tex]L_2[/tex] in slope-intercept form
[tex]10y=2x\Rightarrow\ y=0.2x+0[/tex]
Here, Slope of [tex]L_2[/tex] = m = 0.2
Let n be slope of [tex]L_1[/tex] .
Then [tex]m\times n=-1[/tex] [Product of slopes of perpendicular lines is -1.]
[tex]\Rightarrow\ n=\dfrac{-1}{m}=\dfrac{-1}{0.2}\\\\\Rightarrow\ n=-5[/tex]
Equation of a line that passes through (a,b) and have slope 'm' is given by :-
[tex](y-b)=m(x-a)[/tex]
So, Equation of [tex]L_1[/tex] :
[tex](y-(-4))=-5(x-5)\\\\\Rightarrow\ (y+4)=-5x+25\\\\\Rightarrow\ y=-5x+21[/tex]
Please help me im very depressed and im struggling a lot on my math and i really need some answers
Which sequence shows the numbers in order from least to greatest?
pls dont cheat on quiz: ask for extra practice from teacher and ask questions if you don't get material
Answer:
B
Step-by-step explanation:
Negative numbers are always less than positive numbers. √11 will be positive and absolute value | | is how far the number is from 0, so it will be positive
Find the area. Simplify your answer.
X+8
х
Answer:
x²+8x
Step-by-step explanation:
area of rectangle
l×w
(x+8)×x
x²+8x
The area of the rectangle is [tex]X^2 + 8X[/tex].
To find the area of a rectangle, we multiply its length by its width.
In this case, the length is (X + 8)
and the width is X.
so, we have,
Area = Length * Width
Area = (X + 8) * X
To simplify the expression, we need to distribute the X through the parentheses:
Area = X * X + 8 * X
Area = [tex]X^2 + 8X[/tex]
So, the area of the rectangle is [tex]X^2 + 8X[/tex].
To learn more on Area click:
brainly.com/question/20693059
#SPJ4
A circular mirror measures 24 cm in diameter.
The cake is cut in half. Work out the perimeter of half of the mirror.
Answer:
The perimeter or circumference of a half mirror = 37.68 cm
Step-by-step explanation:
The diameter of circular measure = 24 cmWe know that the perimeter of a circular shape is called the 'circumference', with the formula
Circumference of a circle = C = 2πrWhen the mirror is cut into half, the diameter gets half as well.
Thus, the diameter of a half mirror = 24/2 = 12 cmWe know that radius = r = diameter / 2 = 12/2 = 6 cm
Thus, the perimeter of half of the mirror = C = 2πr
= 2(3.14)6
= 37.68 cm
Therefore, the perimeter or circumference of a half mirror = 37.68 cm
Can any kind soul help me
9514 1404 393
Answer:
18
Step-by-step explanation:
There are two areas where the circles P and C overlap. One is labeled "4" and the other is labeled "3x". The sum of these two values is the number of people who like Pop and Classical music, 13.
4 + 3x = 13
3x = 9 . . . . . subtract 4
x = 3 . . . . . . divide by 3
__
We are asked to find the number of people who like two types only. The three regions where only two circles overlap are labeled x, 3x, and 6. The answer to the question is the sum of these values.
like 2 types only: x +3x +6 = 4x +6 = 4(3) +6 = 18
18 students like two types of music only.
solve for w
30= w/5 + 17
simply as much as possible
Answer:
w = 65
Step-by-step explanation:
What number that when divided by 5 the quotient can be added to 17?
65 :D (wish it was 69 though)
Answer:
65
Step-by-step explanation:
Light travels about 186,000 mi /s. The function d(t) = 186,000t gives the distance d(t), in miles, that light travels in t seconds. How far does light travel in 30 s
D(t) = 186,000 t
D(30) = 186,000 • 30
D(30) = 5,800,000 miles
Hope this helps!
The light will travel 5,580,000 miles in 30 seconds.
To understand the calculations, check below.
Distance :The distance traveled by light is represented by function.
[tex]d(t)=186,000t[/tex]
To find the distance traveled by light in 30 seconds.
Substitute t=30 in the given function.
d(30) = 186,000 × 30
d(30) = 5,580,000 miles.
Hence, the light will travel 5,580,000 miles in 30 seconds.
Learn more about the distance here:
https://brainly.com/question/17273444