Answer:
x = 3/8
Step-by-step explanation:
QUICK, which graph is proportional ?
Solve for X if X +127 equals 185
Answer:X=58
Step-by-step explanation:
Answer:
58
Step-by-step explanation:
6(5 - 2v) = 4(-3v - 1)
Answer:
30=-4
Step-by-step explanation:
Simplifying
6(5 + -2v) = -4(3v + 1)
(5 * 6 + -2v * 6) = -4(3v + 1)
(30 + -12v) = -4(3v + 1)
Reorder the terms:
30 + -12v = -4(1 + 3v)
30 + -12v = (1 * -4 + 3v * -4)
30 + -12v = (-4 + -12v)
Add '12v' to each side of the equation.
30 + -12v + 12v = -4 + -12v + 12v
Combine like terms: -12v + 12v = 0
30 + 0 = -4 + -12v + 12v
30 = -4 + -12v + 12v
Combine like terms: -12v + 12v = 0
30 = -4 + 0
30 = -4
2x + 5y = 13
-x + 4y = 13
solve by elimination
Answer:
i think x=-1 and y=3. ....
Answer:
x = -1 , y = 3
Step-by-step explanation:
2x+5y = 13
-x+4y = 13
Decide whether to add or subtract the two equations by using Different Add Same Subtract (DASS) or in case below as its SUBTRACT
i apply (SDSS).
We subtract 5y as this is easier equation either positive prioritises or if both positive then easier number becomes priory.
Results to SDSS before substituting Y if 5y etc was subtracted
2x+5y = 13 Subtract -5
2x+5y -5y = 13 -5y
2x= 13 - 5y then Divide by 2
2x / 2 = 13/2 - 5y/2 Show then
x = 13 - 5y / 2 + 4y = 13 Simplify
simplify 13 - 13y / 2 as y = 3
as 13/2 = 6.5 and 2.5 +4 = 6.5
y = 3
Substitute y = 3
13-5y )3) / 2
13-5 (3) / 2
BODMAS Brackets first Multiplying only for y substitute 5y = 5 x 3
-5 (3) = 15
13-15 = -2
-2/2 = -1
x = -1
Which of the following is equal to -5/4?
A. -5/-4
B. -(-5/4)
C. -(5/-4)
D. -(-5/-4)
Answer:
C. -(5/-4)
Step-by-step explanation:
[tex] - \bigg(\frac{5}{ - 4} \bigg) \\ \\ = \frac{ - 5}{ - ( - 4)} \\ \\ = \frac{ - 5}{4} \\ [/tex]
(x^2+14x+48)/(x+8) using long division to find the quotient answers are A.)x+6 B.)x+40 C.)x-40 D)x-6
Answer:
A
Step-by-step explanation:
Please see attached work. It’s been color coded for clarity.
Mark Brainliest please. These answers require a lot of effort.
Answer:
=a
Step-by-step explanation:
i think it must be help you
Find the unknown angle
Answer:
V=70° P=110° U=70° T=70° S=110° R=70°
Step-by-step explanation:
Adjacent Angles equal the same thing (The ones on opposite sides). A straight line must equal 180°.
180°-110° makes V° equal 70°.
Answer:
there are two p. so, i had made upper p as a.
The value of coins in the pockets of several students is recorded. What is the mean of the values: 10, 20, 35, 35, 35, 40, 45, 45, 50, 60. A. 10 cents B. 35 cents C. 37.5 cents D. 50 cents
Answer:
C. 37.5
Step-by-step explanation:
10 10 + 20 + 35 + 35 + 35 + 40 + 45 + 45 + 60 + 50=375
375÷10=37.5
The mean of the given data set 10, 20, 35, 35, 35, 40, 45, 45, 50, 60 is 37.5 so option (C) will be correct.
What is mean?The mean is the average of a data set. Mean gives us the idea of that how much amount of overall data have.
In other words, the mean is the foundation of the deviation of data from all data sets.
Mean = sum of data / Number of data
For example, if you have marks in 5 subjects like 40,45,44,46,48 then the mean will be
( 40 + 45+ 44 + 46 + 48) /5 = 44.6.
Given the data set,
10, 20, 35, 35, 35, 40, 45, 45, 50, 60
Now mean is given as
Mean = sum of data / Number of data
So,
Mean = (10+20+35+35+35+40+45+45+50+60)/10
Mean = 37.5
Hence "The mean of the given data set 10, 20, 35, 35, 35, 40, 45, 45, 50, 60 is 37.5".
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12. The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 253.4 and a standard
deviation of 62.3. (All units are 1000 cellsfuL) Using the empirical rule, find each approximate percentage below.
a. What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or
between 191.1 and 315.7?
b. What is the approximate percentage of women with platelet counts between 128.8 and 378.0?
a. Approximately
% of women in this group have platelet counts within 1 standard deviation of the mean,
or between 191.1 and 315.7.
(Type an integer or a decimal. Do not round.)
b. Approximately
% of women in this group have platelet counts between 128.8 and 378.0.
(Type an integer or a decimal. Do not round.)
Answer:
a. What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or
between 191.1 and 315.7?
68%
b. What is the approximate percentage of women with platelet counts between 128.8 and 378.0?
95%
Step-by-step explanation:
The Empirical rule formula states that:
1) 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
2) 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
a. What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or
between 191.1 and 315.7?
μ = mean = 253.4
σ = standard deviation = 62.3.
μ - σ
= 253.4 - 62.3
= 191.1
μ + σ
= 253.4 + 62.3
= 315.7
Therefore, the first empirical rule holds for Question a. This states that 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
Therefore, the approximate percentage of women with platelet counts between 191.1 and 315.7 is 68%
b. What is the approximate percentage of women with platelet counts between 128.8 and 378.0?
μ = mean = 253.4
σ = standard deviation = 62.3.
Applying the second rule of the empirical rule: this states that: 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
For x = 128.8
μ - 2σ
= 253.4 - 2 × 62.3
= 128.8
μ + 2σ
= 253.4 + 2 × 62.3
= 378
Therefore, the approximate percentage of women with platelet counts between 128.8 and 378.0 is 95%
im not sure what im doing wrong? i feel like i did it correctly but it says i didnt so i want to make sure
Please help! Sorry about the crack.
Answer:
[tex] - 18 \\ - 13 \\ 12 \\ 22 \\ 27[/tex]
Step-by-step explanation:
just replace the x by the number given, it's simple calculation
What is an equation of the line that passes through the points (5,0) and (-5, -8)?
Answer:
y = 4/5 x - 4
Step-by-step explanation:
Evaluate the intergal F•dr where F (x,y,z)=xyi+yzj+zxk and c is the twisted cubic given by x=t, y=t^2 ,z=t^3, 0<=t=<1
The integral can be evaluated by substituting everything you know:
[tex]\displaystyle\int_C\mathbf F\cdot\mathrm d\mathbf r=\int_C\mathbf F(x(t),y(t),z(t))\cdot\dfrac{\mathrm d\mathbf r}{\mathrm dt}\,\mathrm dt[/tex]
[tex]=\displaystyle\int_0^1(t^3\,\mathbf i+t^5\,\mathbf j+t^4\,\mathbf k)\cdot(\mathbf i+2t\,\mathbf j+3t^2\,\mathbf k)\,\mathrm dt[/tex]
[tex]=\displaystyle\int_0^1(t^3+5t^6)\,\mathrm dt[/tex]
[tex]=\dfrac{t^4}4+\dfrac{5t^7}7\bigg|_0^1=\dfrac14+\dfrac57=\boxed{\dfrac{27}{28}}[/tex]
The line integral ∫F · dr along the curve is 9/10.
To evaluate the line integral ∫F · dr along the curve C, where F(x, y, z) = xyi + yzj + zxk and C is the twisted cubic given by x = t, y = t², z = t³ for 0 ≤ t ≤ 1, we need to parameterize the curve C and compute the dot product between F and the tangent vector dr.
The parameterization of C is:
r(t) = ti + t²j + t³k
To compute dr, we take the derivative of r(t) with respect to t:
dr = (dx/dt)i + (dy/dt)j + (dz/dt)k
dr = i + 2tj + 3t²k
Now we can compute the dot product between F and dr:
F · dr = (xy)(dx/dt) + (yz)(dy/dt) + (zx)(dz/dt)
F · dr = (t)(i) + (t²)(2t)(j) + (t)(t³)(3t²)(k)
F · dr = ti + 2t³j + 3t⁴k
To evaluate the line integral, we integrate F · dr with respect to t over the interval [0, 1]:
∫[0,1] F · dr = ∫[0,1] (ti + 2t³j + 3t⁴k) dt
Integrating each component separately:
∫[0,1] ti dt = (1/2)t² ∣[0,1] = (1/2)(1)² - (1/2)(0)² = 1/2
∫[0,1] 2t³j dt = (1/4)t⁴ ∣[0,1] = (1/4)(1)⁴ - (1/4)(0)⁴ = 1/4
∫[0,1] 3t⁴k dt = (1/5)t⁵ ∣[0,1] = (1/5)(1)⁵ - (1/5)(0)⁵ = 1/5
Adding the results together:
∫[0,1] F · dr = (1/2) + (1/4) + (1/5) = 5/10 + 2/10 + 2/10 = 9/10
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To you divide fractions, you have to ______ by the reciprocal
halo edwin perkenalkan saya elto saya minta maaf atas kejadian ini disini ada edam yang warna merah era yang orange itu ekut yang ceria ya eria....
hahay
When dividing fractions, you have to multiply by the reciprocal.
Step-by-step explanation:
by punith Reddy
TRY IT
Using Grouping Symbols (A)
What mistake did Parker make
Rewrite each expression without a negative exponent none of the above
x^-1
Answer:
x^-1
x^1
Step-by-step explanation:
Oooops ...can you please repeat ur Question
Answer:
=1/x
Step-by-step explanation:
x^-1=1/x
Please mark it as brainliast
Assume that we are interested in the average length of 1015 fishes in Square Lake, WI. Also assume that all information for all 1015 fishes in this lake is known. Suppose, the average length of all 1015 fishes in Square Lake is 98.06 mm. Derek randomly selects 50 fishes from the Square Lake and obtains and average length of 101.04 mm. Using this information, describe the Individual, Variable, Parameter and Statistic.
Answer is given below
Step-by-step explanation:
given data
average length of all 1015 fishes = 98.06 mm
randomly selects 50 fishes average length = 101.04 mm
solution
When we get here, we mean to measure, so here we measure a fish in a square lake. And the variable means that a fish varies from fish to fish, so the length of the fish in the squares parameter mean that all individuals in the population so the parameter is average length of all 1015 fish in square lakestatics is selct of individual in sample so statistic is average length of random sected so fish in square lakeIf Mike bikes at a speed 10 mph for half an hour, how far would he go? What was Mike's speed (in average) if he covered the distance of 18 miles in 2 hours?
Step-by-step explanation:
Answer:
A: 5 miles
B: 9 mph
Step-by-step explanation:
A:
since the speed is constant, in half an hour, Mike would travel 5 miles.
this is because: 10 miles/1 hour = 5 miles / 0.5 hours (multiply top and bottom by 1/2)
B:
[tex]\frac{18 miles}{2 hours}[/tex] = [tex]\frac{9 miles}{1 hour}[/tex] = 9 mph
is -6.5 a rational number.
pls idk and I really need help
Answer:
it is!!
Step-by-step explanation:
it terminates after the tenths place, therefore, it can be made into a terminating decimal, which means its rational!! can i maybe get brainliest :D at least a thanks or a rating :D
Simplify 6.920? need help asap a) −1 b)0 c)1 d)6.92
Answer:
C.) 1
Step-by-step explanation: Any number raised to the zeroth power will always be 1.
If 1/6x + 3 = 7 what is x
Answer:
x = 24
Step-by-step explanation:
1/6 x + 3 = 7
1/6 x = 4
x = 24
Step-by-step explanation:
The expression is 1/6x+3=7
1/6x+3=7
First, you subtract 3 from both sides
1/6x=4
Then you divide 1/6 from both sides
Dividing fractions is confusing, so I will show you how to do it
4/1 / 1/6
Because you can't divide 1 by 6, you KCF, or keep change flip.
You keep the 4/1, you change the operation to multiplication, and flip 1/6 to make it 6/1.
Now the problem is 4x6=24
So x=24
Write a ratio in simplest form to express 8 inches over 3 feet
Answer:
Step-by-step explanation:
8 inches : 3 feet
12 x 3 = 36 inches
8 inches: 36 inches = 2 inches: 9 inches
The ratio in simplest form to express 8 inches over 3 feet is 2:9.
To express the ratio of 8 inches to 3 feet in simplest form, we need to convert the measurements to a common unit.
Since both measurements involve length, we can convert inches to feet or feet to inches.
We know that 1 foot = 12 inches
So 3 feet = 12×3
=36 inches.
Now the ratio 8 inches over 3 feet is equal to 8 inches over 36 inches.
8/36
Divide numerator and denominator by 4:
2/9
Hence, the ratio in simplest form to express 8 inches over 3 feet is 2:9.
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Every day, you take the elevator from the basement parking lot that is at level-3. The elevator takes two
seconds per level and you find that it takes 46 seconds to reach your floor.
Which floor do you live on?
Write an negative number whose absolute value is greater than 3
Answer:
4+is the absolute value is greater than 3
How does the graph change between point A and point B?
The graph increases.
The graph decreases.
The graph remains constant.
the graph increases
Step-by-step explanation:
because its moving out
Identify the coordinate of a point three units from B, but not on AB."
A number line is shown
Answer:
Pretty sure its 5.
Step-by-step explanation:
AB should represent the space between A and B so i think it would be 5.
The volume, in cubic feet, of a right cylindrical silo of height h and radius r is V = πr2h. The height of the silo is h(r) = 3.5r.
Answer:
2,4,5
Step-by-step explanation:
Maya's credit card has an APR of 11.84% and a billing cycle of 30 days. The table below shows her transactions with
that credit card in the month of September
Date
9/1
9/8
9/13
9/26
Amount ($) Transaction
395.61 Beginning balance
24.13 Purchase
68.57 Payment
31.77 Purchase
Find Maya's finance charge for September using the previous balance method, the adjusted balance method, and the
daily balance method. Among those three possible finance charges, what is the value of the one which is neither lowest
nor highest?
a $3.79
b. $3.90
C. $3.68
d. $4.45
Answer:
C. $3.68
Step-by-step explanation:
I took the test
Based on the three possible finance charges, the value of the one that is neither lowest nor highest is $3.68.
What is a finance charge?A finance charge is regarded as the cost incurred when a person borrows money and it often includes interest and other fees.
To find the finance charges, the formula is:
= Amount transacted x Interest rate / 12 months
395.61 x [tex]\frac{11.84}{100}[/tex] / 12
= 3.68
Therefore the correct option is option c.
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Factor x^2 + 9x = -20
Answer:
(x +5) (x +4) = 0
Step-by-step explanation:
x^2 + 9x +20 = 0
x^2 + 4x + 5x +20 = 0
x(x + 4) + 5(x + 4) = 0
(x +5) (x +4) = 0
Answer:
see below
Step-by-step explanation:
x^2 + 9x = -20
x^2 + 9x + 20 = 0
factor the expression
(x + a)(x + b)
a + b = 9
a = 4
b = 5
ab = 20
rewrite the factor expression:
(x + 4) (x + 5)
x + 4 = 0 and x + 5 = 0
therefore,
x = -4
x = -5
Use a stem-and-leaf plot to display the data, which represent the thickness (in centimeters) of ice measured at 20 different locations on a frozen lake. Describe any
patterns.
5.8 6.5 6.9 7.2 5.1 4.9 4.3 5.8 7.0 6.8
8.7 7.5 7.2 5.8 7.2 8.0 7.2 6.9 5.9 7.9
Determine the leaves in the stem-and-leaf plot below.
Key: 3|3= 3.3
Ice Thickness
4|
5|
6|
7|
8|
Answer/Step-by-step explanation:
To represent the data given on a stem and leaf plot, the whole number in a given value would be used as the stem, while the number after the decimal point is the leaf. (Key: 3|3 = 3.3).
For example, in the first stem in the first row, we have 4 as the stem. All values that starts with 4 point would be represented in this row. The digit after 4 point for each of the values would be written on the leaf column in the first row, from the least to the largest. For the first row we have: 4 | 3 9.
Same applies to the rest rows.
The stem plot would look like the one below:
Ice Thickness:
Stem | Leaf
4 | 3 9
5 | 1 8 8 8 9
6 | 5 8 9 9
7 | 0 2 2 2 2 5 9
8 | 0 7
The data of the stem-and-leaf plot shows a bell-shaped pattern with majority of the ice thickness for the 20 locations clustering around the center of the data distribution.
