Hello!! :D
Answer: 40.5, 45, 57
Hope this helps! Have a wonderful day! :D
6x + 3y = 45, solve for y in terms of x
Answer:
y=13
Step-by-step explanation:
Which statement about the location of √7 on the number line is true?
A= It is located at the number 7 on the number line.
B= It is located at the number 3.5 on the number line.
C= It is located between the numbers 2 and 3 on the number line.
D=It is located between the numbers 4 and 9 on the number line
y-2x=-1 in slope intercept form
Y=2x-1
Step-by-step explanation:
I am big brain
Answer:
y=2x-1
Step-by-step explanation:
You add 2x to the other side, then rearrange
Simplify the following (1/2)^-3
Answer:
8====================
Use properties:
\(a^{bc} = (a^b)^c\)\(a^{-1} = 1/a\\\)
Simplify in steps:
\((\cfrac{1}{2})^{-3} =\) \((\cfrac{1}{2})^{-1*3} =\) \(((\cfrac{1}{2})^{-1})^3 =\) \(2^3=\)\(8\)
The spine of a science textbook is 0.50 inches. How many science textbooks can be placed standing up on a shelf that is 12 inches long?
Justify your answer with models, pictures, and/or equations.
equations.
Spine = width
Need help on the last problem
no. of right answers = 60
no. of wrong answers = 40
he spun a 4 five times. which statements are true? choose all that apply.; nathan rolls a number cube and records the result of each roll in the table.; which of the following is a valid probability distribution; what is the probability of an event that is impossible; what is the probability of an event that is certain; what is the sum of the probabilities of all possible outcomes; what is the sum of the probabilities of all values of the random variable
"Nathan rolls a number cube and records the result of each roll in the table" is a true statement. Probability can be used to make predictions or decisions in a variety of situations, such as in gambling, finance, and science. In these situations, probabilities can be calculated based on statistical data or by using mathematical models.
"He spun a 4 five times." is not a valid statement, as it is not clear what "he" or "a 4" refers to.
A valid probability distribution is a set of possible outcomes of a random event, along with the corresponding probabilities of those outcomes occurring. For example, if we roll a number cube, the possible outcomes are 1, 2, 3, 4, 5, and 6, and the probability of each outcome occurring is 1/6.
The probability of an event that is impossible is 0.The probability of an event that is certain is 1.The sum of the probabilities of all possible outcomes is 1. This is because the probabilities of all possible outcomes must add up to 1, as one of the outcomes must occur.The sum of the probabilities of all values of the random variable is equal to the sum of the probabilities of all possible outcomes, which is 1.Learn more about probability, here https://brainly.com/question/11234923
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Find the measure of angle A.
A
8x + 2
10x - 4
38°
Answer:
8x + 2 + 10x - 4 + 38 = 180
18x + 36 = 180
18x = 144, so x = 8
Angle A measures 8(8) + 2 = 64 + 2 = 66°.
Victoria wants to purchase a tablet. She has $130 to spend. She finds one that regularly sells for $139.99 and is on sale of 15% off. Sales tax is 7%. How much will Victoria pay for the tablet? Show your work and record your answer in the red box.
Answer:
$127.32
Step-by-step explanation:
Selling price= $139.99
Sale discount= 15% = $139.99 * 0.15 = $21
Discounted price= $139.99 - $21 = $118.99
Sales tax added= 7% = $118.99 * 0.07 = $8.33
Victoria has to pay = $118.99 + $8.33 = $127.32 so she has enough money to buy it with $2.68 left
Type the correct answer in each box. Use numerals instead of words.
Answer:
c = 7
d = 5
Step-by-step explanation:
combining coefficient a with the nth root of b: a√ⁿb = √ⁿ((a)ⁿb). This is the reverse of simplifying a radical.
8x³√²7x = √²((8x³)²)√²(7x) = √²(64x⁶)√²(7x) = √²((64x⁶)(7x)) = √²((64 × 7)(x⁶ × x)) = √²((448)(x⁷)) = √²448x⁷ →
√²448x⁷ = √²448xᶜ.
7 → c, √²448x⁷ = √²448x⁷, c = 7.
4x√³9x² = √³((4x)³)√³(9x²) = √³(64x³)√³(9x²) =
√³((64x³)(9x²)) = √³((64 × 9)(x³ × x²)) = √³((576)(x⁵)) = √³576x⁵ →
√³576x⁵ = √³576xᵈ.
5 → d, √³576x⁵ = √³576x⁵, d = 5.
Can anybody answer this question? Check all that apply.
Answer:
I donot know the answer sorry baby
Answer:
B
Step-by-step explanation:
Which of the following is a true statement about proportional?
A. The graph of a proportional relationship is only a straight line.
B. The graph of a proportional relationship includes the origin.
C. Neither
Answer:
A
Step-by-step explanation:
TAMa dahil kung wala ang graph of a relationship ano pa ba?
Can you explain how to do this?
The intervals in which the function is decreasing are:
{(-∞, -3), (1, 4)}
In which intervals is the function decreasing?A function is decreasing if, when reading the graph from left to right, the graph goes downwards.
Here we can see that the graph is decreasing in the intervals:
(-∞, -3) (leftmost part)
And in the interval:
(1, 4)
In all the other intervals the function is increasing.
Then the answer is:
Intervals: {(-∞, -3), (1, 4)}
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If you are starting with what you know about a large population and coming to a conclusion about a specific scenario, then which type of reasoning are you using?
Answer:
Education –> Mortality –> Fertility rates
Education –> Fertility rates
Step-by-step explanation:
Education and fertility is a key role to grow a large population. But if the mortality rate is low families tend to have less children.
x\(x^{2}+ 10x =11\)
Answer:
For this problem, x has multiple values, so we will solve for both.
Step-by-step explanation:
\(x^2+10x-11=11-11\\x^2+10x-11=0\\\)
Quadratic rule
\(x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\)
\(\mathrm{For\:} a=1,\:b=10,\:c=-11\)
\(x_{1,\:2}=\frac{-10\pm \sqrt{10^2-4\cdot \:1\cdot \left(-11\right)}}{2\cdot \:1}\)
Dealing with radicals
\(\sqrt{10^2-4\cdot \:1\cdot \left(-11\right)}\\=\sqrt{10^2+4\cdot \:1\cdot \:11}\\=\sqrt{10^2+44}\\=\sqrt{100+44}\\=\sqrt{144}\\=\sqrt{12^2}\\=12\\\)
Multi-solution expression
\(x_1=\frac{-10+12}{2\cdot \:1},\:x_2=\frac{-10-12}{2\cdot \:1}\)
Solve for x₁
\(\frac{-10+12}{2\cdot \:1}\\=\frac{2}{2\cdot \:1}\\=\frac{2}{2}\\=1\)
Solve for x₂
\(\frac{-10-12}{2\cdot \:1}\\=\frac{-22}{2\cdot \:1}\\=\frac{-22}{2}\\= -\frac{22}{2}\\= -11\)
Thus, x has 2 values for 2 different numbers:
x₁ = 1
x₂ = -11
➲ Hope this helps!
b) The completed construction of a regular hexagon is shown below. Explain why AACF is a 30°-
60°-90° triangle. (10 points)
ACF is a 30º-60º-90º triangle because of the following:
1) Based on a theorem, in a 30°-60°-90° triangle the sides are in the ratio 1 : 2 : \(\sqrt{3}\)
1 → short leg
2 → hypotenuse
\(\sqrt{3}\) → long leg
Side length of the hexagon is the short leg of the triangle. It is 1.
r1 is the radius of the incircle in a regular hexagon. 2(r1) is the diameter of the incircle. It is also the hypotenuse of the right triangle. It is 2.
Using Pythagorean theorem.
\(a^2 + b^2 = c^2\)
\(1^2 + b^2 = 2^2\)
\(b^2 = 2^2 - 1^2\)
\(b^2 = 4 - 1\)
\(b^2 = 3\)
\(\sqrt{b^2} = \sqrt{3}\)
\(b = \sqrt{3}\)
The sum of the digits of a two-digit number is 5. If nine is subtracted from the number, the digits will be reversed. Find the Algebraic equation by replacing the tens digit with x.
Let a be the number in the 10s place and b in the 1s place. Then the original two-digit number is 10a + b.
The sum of the digits is 5:
a + b = 5
Subtract 9 from the original number, and we get the same number with its digits reversed:
(10a + b) - 9 = 10b + a
Simplifying this equation gives
9a - 9b = 9
or
a - b = 1
Add this to the first equation above:
(a + b) + (a - b) = 5 + 1
2a = 6
a = 3
Then
3 - b = 1
b = 2
So the original number is 32. Just to check, we have 3 + 2 = 5, and 32 - 9 = 23.
C = 200 – 7x + 0.345x2
The way to find the domain and the range is illustrated below.
How to illustrate the information?From the information, c(x) = 200 - 7x + 0.345x². It should be noted that the domain is the set of x-values that are feasible.
The range is the set of possible results for c(x). They are the possible costs. You can derive this from the fact that c(x) is a parabola and you can draw it, for which you can find the vertex of the parabola, the roots, the y-intercept, the shape.
You can substitute some values for x to help you, for example:
x y
0 200
1 200 -7 +0.345 = 193.345
2 200 - 14 + .345 (4) = 187.38
3 200 - 21 + .345(9) = 182.105
4 200 - 28 + .345(16) = 177.52
5 200 - 35 + 0.345(25) = 173.625
6 200 - 42 + 0.345(36) = 170.42
10 200 - 70 + 0.345(100) =164.5
11 200 - 77 + 0.345(121) = 164.745
If the functions do not have real roots, then the costs never decrease to 0. The function starts at c(x) = 200, decreases until the vertex, (x =10, c=164.5) and starts to increase.
Then the range goes from 164.5 to infinity, limited to the solution for x = positive integers.
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Complete question:
the daily production cost, c, for x units is modeled by the equation: c = 200 – 7x 0.345x² explains how to find the domain and range of c.
Help ASAP). Graph the function: Look at the picture for the problem. Brainliest Answer. Show me points of graph paper so I can see
\(the \: points \: are: \\ (−1, \: 0) \\ (1, \: 2) \\ (4, \: 2)
\\
Step-by-step \: explanation: \\ \\
f(x) = x + 1 \: ....if \: x < 0 : \iff \: ( - 1, \: 0) \\ if \: x = - 1 \: then \: y = 0\\ \\ f(x) = 2 \: ....if \: 0 . \leqslant x \leqslant 1 :\: \iff( 1, \: 2) \\if \: x = 1\: then \: y = 2. \\ \\ f(x) = x\: ....if \: x > 1 : \: \iff( 2, \: 2) \\ if \: x=2 \: then \: y=x=2.\)
♨Rage♨
what is 12 liters converted into milliliters
What is the Pythagorean Theorem?
a.
a2 + b2 = c2
b.
x + y = z
c.
a + b = c
d.
y = mx + b
Answer:
a squared plus b squared=c squared. The answer is A.
Step-by-step explanation:
Hope I helped!
Please mark Brainliest!!!
Answer:
A. The Pythagorean Theorem is A² + B² = C²
Step-by-step explanation:
I hope that this helps! :)
The gift is 1.5 feet tall and Amberly choose to leave one of its bases uncovered. Explain how many many square inches of paper she would use to wrap the gift, assuming the paper does not overlap
And one of the bases is 9 inches by 0.5 feet
The net area of the paper needed is 4.125 square feet.
What is a cuboid?A cuboid is a three-dimensional closed figure which has volume along with surface area.
The volume of a cuboid is the product of its length, width, and height.
The total surface area of a cuboid is 2(lw + wh + wl) and the lateral surface area is 2(l + w)×h.
Given, The gift is 1.5 feet tall and one of the bases is 9 inches = 0.75 by 0.5 feet.
Therefore the total surface area is,
= 2(1.5×0.5 + 1.5×0.75 + 0.75×0.5).
= 2(0.75 + 1.125 + 0.375).
= 2(2.25).
= 4.5 square feet.
Now, She left one of the bases uncovered which have an area of 0.375 square feet.
Therefore, the net amount of paper needed is = 4.5 - 0.375.
= 4.125 square feet.
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Scores on a common final exam are normally distributed with mean 71 and standard deviation 9. Department policy is that the top 10% of students receive an A. The minimum exam score to be awarded an A is about:
Answer:
The minimum exam score to be awarded an A is about 8.52.
Step-by-step explanation:
Let X represent the scores on a common final exam.
It is provided that X follows a normal distribution with mean, μ = 71 and standard deviation, σ = 9.
It is provided that according to the department policy is that the top 10% of students receive an A.
That is, P (X > x) = 0.10.
⇒ P (X < x) = 0.90
⇒ P (Z < z) = 0.90
The corresponding z-score is:
z = 1.28
Compute the value of x as follows:
\(z=\frac{x-\mu}{\sigma}\\\\1.28=\frac{x-71}{9}\\\\x=71+(1.28\times 9)\\\\x=82.52\)
Thus, the minimum exam score to be awarded an A is about 8.52.
I need help with this math vocab review. You have to unscramble the circled letters to find the riddle on the bottom of the page.
Answer:
it tells you which lessons to go to . did you answer the questions on those pages
Step-by-step explanation:
Why is the square root of 36 equal to 6?
Answer:
6^2= 36
Step-by-step explanation:
Answer:
because that is what sqrt are
Step-by-step explanation:
A square root of a number is a value that, when multiplied by itself, gives the number. Example: 6 × 6 = 36, so a square root of 36 is 6 ... The symbol is √ which always means the positive square root.
At a speed of 22 revolutions per minute, how long will it take a wheel with radius 10",
rolling on its edge to travel 10 feet?
Answer:
0.4 seconds or
0.00667 minutes
Step-by-step explanation:
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pi times radius times 2 = circumference
pi times 10 inches times 2 = 62.83 inches = circumference
In one revolution, the wheel covers a distance equal to its circumference. So, at a speed of 22 revolutions per minute, the wheel covers a distance of:
22 x 62.83 inches inches per minute
1382.26 revolutions per minute
The wheel travels 1383.8 ft. in 60 seconds.
The wheel travels 1 ft. in (60 / 1383.8) seconds.
The wheel travels 10 ft. in (60 / 1383.8) * 10 seconds = 0.4 seconds
= 0.4 seconds divided by 60 = 0.00667 minutes
Please help this question is asking about the volume of a hemisphere and cylinder?
Answer:
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The points A, B and C have position vectors a, b, c, referred to an origin O. i. Given that the point X lies on AB produced so that AB : BX = 2 : 1, find x, the position vector of X, in terms of a and b. ii. If Y lies on BC, between B and C so that BY : Y C = 1 : 3, find y, the position vector of Y, in terms of a and b iii. Given that Z is the midpoint of AC, Calculate the ratio XY : Y Z.
i. The position vector of X is 2b - a.
ii. The position vector of Y is (3b + c)/4.
iii. The ratio XY : Y Z is \(|(2b - a) - ((3b + c)/4)|/|((3b + c)/4) - (a + c)/2|\). Simplifying this expression will give us the final ratio.
i. To find the position vector x of point X, we can use the concept of vector addition. Since AB : BX = 2 : 1, we can express AB as a vector from A to B, which is given by (b - a). To find BX, we can use the fact that BX is twice as long as AB, so BX = 2 * (b - a). Adding this to the vector AB will give us the position vector of X: x = a + 2 * (b - a) = 2b - a.
ii. Similar to the previous part, we can express BC as a vector from B to C, which is given by (c - b). Since BY : YC = 1 : 3, we can find BY by dividing the vector BC into four equal parts and taking one part, so BY = (1/4) * (c - b). Adding this to the vector BY will give us the position vector of Y: y = b + (1/4) * (c - b) = (3b + c)/4.
iii. Z is the midpoint of AC, so we can find Z by taking the average of the vectors a and c: z = (a + c)/2. The ratio XY : YZ can be calculated by finding the lengths of the vectors XY and YZ and taking their ratio. Since XY = |x - y| and YZ = |y - z|, we have XY : YZ = |x - y|/|y - z|. Plugging in the values of x, y, and z we found earlier, we get XY : YZ =\(|(2b - a) - ((3b + c)/4)|/|((3b + c)/4) - (a + c)/2|\).
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what is two times 40 degree
Answer: 80 degrees
Step-by-step explanation: 2 times 40 equals 80
Not that hard
Sally earns $9.56 per hour. What is her overtime pay at time-and-a-half?