Answer:
10 x 12 x 9 cm^2
= 1080 cm^2
Answer:
105
Step-by-step explanation:
a = 1/2(bh) + 1/2(bh)
a = 1/2(12)(10) + 1/2 (9)(10)
a= 1/2 (120) + 1/2(90)
a = 60 + 45
a = 105
Un coche tarda 12 minutos en dar la vuelta a un circuito si va a una velocidad de 80 km/h. Cuánto tiempo tardara en recorrer el mismo circuito si va a una velocidad de 100 km/h?
A sample of matter experiences a decrease in average kinetic energy as it continues to cool. One would anticipate that the particles will eventually come to a complete stop. The temperature at which particles should theoretically stop moving is absolute zero. Thus, option B is correct.
What theory directly contradicts concept of absolute zero?
All molecules are predicted to have zero kinetic energy and, as a result, no molecular motion at absolute zero (273.15°C). Zero is a hypothetical value (it has never been reached).
Absolute zero signifies that there is no kinetic energy involved in random motion. A substance's atoms don't move relative to one another.
Therefore, Kinetic energy because it can create heat which goes against the absolute zero. A gas molecule's kinetic energy tends to zero when the temperature reaches absolute zero.
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1 + 1 = ?
I am very confused please help. Some kid at my school asked this question and I really need an answer. Can any of you guys help?
The actual answer is 2 but the kid probably expected you to say "window". That's a really old joke.
What is the answer to I love my pet / ages 5-6
Answer:
What is the answer to I love my pet / ages 5-6
What is the answer to I love my pet: aww, u mean it?
ages 5-6: goo goo ga ga
a] The area of a square is 200 cm² Find the length of its diagonal.
\("20cm"\)
Step-by-step explanation:\(Area\ of\ rq=a^2\)
\(a=\sqrt{200}=10\bullet \sqrt{2}\)
\(d\ iargul=\sqrt{2}9\)
\(=10\times \sqrt{2}\times \sqrt{2}\)
\(=20cm\)
I hope this helps you
:)
At noon, a tank contained 5cm of water. After several hours, it contained 3cm of water. What is the percent decrease of water in the tank?
Answer: 40%
Step-by-step explanation: Percent change=difference/original times 100.
2/5 times 100 is 40%
Find the quotient.
–84 ÷ 12.
Answer:
your answer is -7
Step-by-step explanation:
A manufacturer must test that his bolts are 4.00 cm long when they come off the assembly line. He must recalibrate his machines if the bolts are too long or too short. After sampling 121 randomly selected bolts off the assembly line, he calculates the sample mean to be 4.21 cm. He knows that the population standard deviation is 0.83 cm. Assuming a level of significance of 0.02, is there sufficient evidence to show that the manufacturer needs to recalibrate the machines? Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.
The sample mean of 4.21 cm is significantly different from the specified target mean of 4.00 cm.
Step 1: State the hypotheses.
- Null Hypothesis (H₀): The mean length of the bolts is 4.00 cm (μ = 4.00).
- Alternative Hypothesis (H₁): The mean length of the bolts is not equal to 4.00 cm (μ ≠ 4.00).
Step 2: Compute the value of the test statistic.
To compute the test statistic, we will use the z-test since the population standard deviation (σ) is known, and the sample size (n) is large (n = 121).
The formula for the z-test statistic is:
z = (X- μ) / (σ / √n)
Where:
X is the sample mean (4.21 cm),
μ is the population mean (4.00 cm),
σ is the population standard deviation (0.83 cm), and
n is the sample size (121).
Plugging in the values, we get:
z = (4.21 - 4.00) / (0.83 / √121)
z = 0.21 / (0.83 / 11)
z = 0.21 / 0.0753
z ≈ 2.79 (rounded to two decimal places)
Step 3: Determine the critical value and make a decision.
With a level of significance of 0.02, we perform a two-tailed test. Since we want to determine if the mean length of the bolts is different from 4.00 cm, we will reject the null hypothesis if the test statistic falls in either tail beyond the critical values.
For a significance level of 0.02, the critical value is approximately ±2.58 (obtained from the z-table).
Since the calculated test statistic (2.79) is greater than the critical value (2.58), we reject the null hypothesis.
Conclusion:
Based on the computed test statistic, there is sufficient evidence to show that the manufacturer needs to recalibrate the machines. The sample mean of 4.21 cm is significantly different from the specified target mean of 4.00 cm, indicating that the machine's output is not meeting the desired length. The manufacturer should take action to recalibrate the machines to ensure the bolts meet the required length of 4.00 cm.
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find all the partial product. then add to find the final product 16×15
We can write the numbers as a sum of other number, so:
\(\begin{gathered} 16\cdot15=(10+6)\cdot(10+5) \\ 16\cdot15=(10\cdot10)+(10\cdot5)+(6\cdot10)+(6\cdot5) \\ 16\cdot15=100+50+60+30 \\ 16\cdot15=150+90 \\ 16.15=240 \end{gathered}\)Sera had the number 548.She adds one to the tens and two to the units. What number would Sera end up with??
The number she'd have is:
560Explanation:
First, let's see which number is in the tens place and which number is in the ones place (the units place).
In the number 548, the place value of 5 is hundreds, the place value of 4 is tens, and the place value of 8 is ones (or units).
So if Sera adds two to the units, she'll have 10. But, since we can't write the number as 5410 (that would be a totally different number), we just write 0 in the units place, and shift 1 to the tens place, which gives us :
550
That's not all, since we also add 1 to the tens:
560
Hence, Sera ends up with 560.Can someone help me out plz
Volume = πr²h
Radius = 3yd
Height = 12yd
Take π = 22/7
Volume = 22/7×3×3×12
= 2376/7
= 339.4285714yd³
Rounding off to nearest tenth
= 339.43yd³
Answered by Gauthmath must click thanks and mark brainliest
HELP PLEASE FAST!! Determine the perimeter of the right triangle shown. Round your final answer to the nearest whole number if necessary.
Answer:
26
Step-by-step explanation:
One leg measures 7.
One leg measures 8.
a² + b² = c²
7² + 8² = c²
c² = √113 = 10.630 = 11
perimeter = 7 + 8 + 11
perimeter = 26
What is the area of the square that measures 3.1 m on each side
The area of the square with a side length of 3.1 meters is 9.61 square meters.
To find the area of a square, we need to multiply the length of one side by itself. In this case, the square has a side length of 3.1 m.
Area of a square = side length × side length
Substituting the given side length into the formula:
Area = 3.1 m × 3.1 m
To perform the calculation:
Area = 9.61 m²
It's worth noting that when calculating the area, we are working with squared units. In this case, the side length is in meters, so the area is expressed in square meters (m²). The area represents the amount of space enclosed within the square.
Remember, to find the area of any square, you simply need to multiply the length of one side by itself.
The area of the square with a side length of 3.1 meters is 9.61 square meters.
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Need help figuring this out
Answer:
The answer is 64
Pls mark as brainliest
can someone please solve and explain how you got your answer, WILL GIVE BRAINLIEST!!!
Answer:
A, graph 4, S(0, 9)B, graph 3, R(9, 0)C, graph 1, P(3, 9)D, graph 2, Q(-3, 0)Step-by-step explanation:
You want to identify the graphs that go with each of these functions, along with a particular point on the curve.
y = x² +3x +9y = (x +3)(x -9)y = (x -3)² +9y = -(x -9)(x +3)Quadratic features of interestThe equations are written here in standard form, factored form, and vertex form. (The "factored form" is sometimes called "intercept form.") Each of these forms can be analyzed for characteristics relevant to identifying the corresponding graph.
In general, we can readily identify the opening direction, based on the sign of the leading coefficient. Depending on the form, we can also identify zeros, the vertex, and the y-intercept.
Standard formThe line of symmetry (x-coordinate of the vertex) of the equation in the form ax² +bx +c is x = -b/(2a). That is, it will be left of the y-axis when the coefficients 'a' and 'b' have the same sign.
The graph of equation A will be graph 4, the only one with its vertex left of the y-axis. The y-intercept is the constant: point S = (0, 9).
Factored formEquation B has a positive leading coefficient, so opens upward. The zeros of the factors are -3 and +9, so identify the places where the graph crosses the x-axis. Graph 3 is the only one that opens upward and has x-intercepts. Point R is (9, 0).
Vertex formThe vertex form of a quadratic is ...
y = a(x -h)² +k . . . . . . . vertex (h, k); leading coefficient 'a'
Equation C has its vertex at (h, k) = (3, 9) and opens upward (a>0). Graph 1 is the only one matching those characteristics. Point P is the vertex, so point P is (3, 9).
Leading coefficientEquation D is the same as equation B, but with a negative leading coefficient. That is, it opens downward and crosses the x-axis in two places, at x = -3 and x = 9. Graph 2 is matches this description. The left zero is point Q, (-3, 0).
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What’s the circumference of a 4 inch pie
Answer:
c=12.56
Step-by-step explanation:
Which expression is equivalent to 2m^2 - m^2(7-m)+6m^2?
Answer:
\(m^3+m^2\)
Step-by-step explanation:
=> \(2m^2-m^2(7-m)+6m^2\)
Collecting like terms and expanding the brackets
=> \(2m^2+6m^2-7m^2+m^3\)
=> \(8m^2-7m^2+m^3\)
=> \(m^2+m^3\)
=> \(m^3+m^2\)
Solve the system of linear equations using substitution. Use a pencil and paper. Which expression would be easier to substitute into the other equation, in order to solve this problem? Explain your reasoning.
x=4y-9
x+4y=3
Answer:
(- 3, 1.5)
--------------------------
Given system:
x = 4y - 9x + 4y = 3The first expression is ready to be substituted as no further operation is required to simplify it.
4y - 9 + 4y = 38y - 9 = 38y = 12y = 12/8y = 1.5Find x:
x = 4*1.5 - 9x = 6 - 9x = - 3share 660kg in ratio of 5:7
5x+7x=660;
12x=660;
x=660:12;
x=55 (kg).
Then 5x=5×55=275 kg and 7x=7×55= 385 kg.
The required ratio is therefore
660= 275:385.
please help me with this question!!
“Steven's mother asked him to buy 750 grams of sugar. At the supermarket, he finds that the sugar packages give the weight in kilograms. What is the amount of sugar in kilograms that Steven needs to buy?”. i DO NOT know the answer. it would be so awesome if someone could help.
Answer:
0.75
Step-by-step explanation:
there is 1000 grams in 1 kilogram so I divided 750 by 1000 to get 0.75.
There are 739 seats in a theater . Round the nearest hundred
Answer:
700
Step-by-step explanation:
when rounding a number use the place to the right of it so 739 and if its 1-4 then keep the number the same, if 5-9 round up, since its 3 keep it the same and when rounding always get rid of the numbers after number rounded
Melanie recorded a tape of her guitar playing. It cost her $2,700 to record the master tape, and it costs $2.50 to make each copy. If she sells the tapes for $10 each, how many tapes must she sell to break even?
The number of tapes Melanie must sell to break even is 360 tapes.
How to find the number of tapes Melanie must sell to break even?To find the number of tapes Melanie must sell to break even, we must follow these steps.
We must identify how much she earns for each tape that she sells, for this we must subtract the sale price of each tape, by the value that she pays to make each tape.
10 - 2.5 = 7.5Now we must divide the total cost of the mother tape by the profit she makes on each tape she sells.
2,700 / 7.5 = 360Based on the above, we can infer that she must sell 360 tapes to cover the value of the mother tape and each of the tapes that she needs to sell. Next it is checked:
360 * 10 = 3,6003,600 - 2,700 = 900900 / 2.5 = 360Learn more about break-even point in: https://brainly.com/question/14980499
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given the quadratic function, state whether the parabola opens up or down, and whether it has a maximum or minimum. y
For the stated quadratic function the parabola opens up and is minimum.
Describe the term parabola?A parabola is an approximately U-shaped, mirror-symmetrical planar curve. It corresponds to a number of seemingly unrelated mathematical descriptions, all of which can be shown to define the same curves.The standard equation of parabola is -
y = ax² + bx + c; a ≠ 0If a > 0, graph opens upward and function is minimum.If a < 0, graph opens downward and function is maximum.For the stated equation;
y = x² + 6x -5
a = 1 > 0
Thus, graph opens upward and function is minimum.
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The complete question is-
Given the quadratic function, state whether the parabola opens up or down, and whether it has a maximum or minimum. y
y = x² + 6x -5
1728829+5363792002×82873992892/12=?
Answer:
Simplify the expression.
Exact Form:
111129715061983798933/3
Decimal Form:
3.70432383⋅10^19
Step-by-step explanation:
Answer:
exact form is 111129715061983798933/3
decimal form 3.70432383*10^19
Step-by-step explanation:
how to tell if a table is linear quadratic or exponential
If the table is linear the first difference will be same, if the table is quadratic the second difference will be same and if the table is exponential the ratio will be constant
If the table is a linear model
The general form of such function will be
y = mx + b
Where m is the slope of the line
b is the y intercept
So if the table is linear it will have a constant first difference
But if the table is a quadratic function then the function has constant second difference
The general form of the exponential function will be
f(x) = a^x
Where a is the constant
x is the variable
Therefore if the table is exponential it will have constant ratio
Hence, the linear table have constant first difference, the quadratic table have constant second difference and the exponential have constant ratio
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A white rectangular board 28 cm long and 16 cm wide is placed in the centre of a large rectangular wooden board. It creates a border of 3 cm around it. Find the area not covered by the white board.
The area not covered by the white board is 192 cm².We can find by using area of rectangular formula.
What is rectangle?A rectangle is a quadrilateral that has its parallel sides equal to each other and all the four vertices are equal to 90 degrees. Hence it is also called quadrilateral. Since the opposite sides are equal and parallel in rectangle.
What is the formula to find area of rectangle?The area is measurement of the surface of a shape. To find the area of a rectangle or a square you need to multiply the length and the width of a rectangle.The formula for the Area of a Rectangle is A = l × b. The area of any rectangle is calculated once its length and width are known.
Now we find
A white rectangular board 28 cm long and 16 cm wide.
Substitute the respective values
Area of White Board = 28 *16
The area of white board is 448 cm²
Wooden board creates a border of 2 cm around it.
Wooden Board dimension = (28 + 2 + 2) cm long and (16 + 2 + 2) cm wide
Wooden Board dimension = 32 cm long and 20 cm wide.
The area of Wooden board = 32*20=640
The area not covered by the white board is
640 cm² - 448 cm² = 192 cm²
The area not covered by the white board is 192 cm².
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In the figure, m<1= m<2 = 22 and m<3 = m<4 = 123. Find m
Answer:
35
Step-by-step explanation:
35 because the two angles are added 22 and 123 = 145. 145-180=35
30 POINTS!!!!1 PLEASE HELP!!!!!
A cube is a three-dimensional geometric figure, hollow or solid, contained by six equal square sides. The maximum capacity of a cube is calculated with the formula, V = s3, where V = volume and s = side length.
For a cube shaped box with a maximum capacity of 4,096 cubic inches and a side length of 4x inches, x =
inches.
Answer:
From what I could tell, the answer is 16.
If the trapezoid below is reflected across the x-axis, what are the coordinates
of B? A.(4,-8). B.(-8, -4) C. (-4,-8).
Answer:
b i think
Step-by-step explanation:
simplify 15a^2 * 4c * 5ab
Answer: 300a^3cb
Step-by-step explanation:
\($$Simplify the following:$$15 \times 4 \times 5 a^{2} c a b$$$$\begin{aligned}&15 a^{2} \times 4 c \times 5 a b=15 a^{2+1} \times 4 c \times 5 b: \\ \\&15 \times 4 \times 5 a^{2+1} c b\end{aligned}$$$$\begin{aligned}&2+1=3 \\ \\&15 \times 4 \times 5 a^{3} c b \end{aligned}$$$$\begin{aligned}&15 \times 4=60 \\ \\&60 \times 5 a^{3} c b\end{aligned}$$$$60 \times 5=300$$Answer:$$300 a^{3} c b$$\)
Find the surface area