Answer with explanation:
We have to find the product of
⇒(3.1)× (-1.6)
Step 1:→ (3.1)(–1.6) = (–1.6)(3.1)
Step 2: = -1.6×(3 + 0.1)=(-1.6) ×3 + (-1.6)×(0.1)→→We have used Distributive property of addition with respect to Multiplication, which is , a × (b + c)=a×b + a × c
Step 3: = (–4.8) + (–0.16)
Step 4: = –4.96
The expression which correctly fills the blank is:
Option D: →→ (–1.6)(3) + (–1.6)(0.1)
A circle is centered at the point (-3,2) and passes through the point (1,5). What's the radius
radius = square root (( x2-x1)^2 +(y2-y1)^2)
= sqrt(1-(-3)^2+(5-2)^2
= sqrt(16+9)
=sqrt(25)
= 5
radius is 5
The radius of the circle is [tex]\boxed{5{\text{ units}}}.[/tex]
Further explanation:
The standard equationof the circle with center [tex]\left( {h,k}\right)[/tex] and radius r can be expressed as,
[tex]{\left( {x - h}\right)^2} + {\left({y - k} \right)^2}= {r^2}.[/tex]
Given:
A circle with center at [tex]\left({ - 3,2} \right).[/tex]
The passing through point is [tex]\left( {1,5} \right).[/tex]
Explanation:
The center is at [tex]\left( { - 3,2} \right).[/tex]
The passing through point is [tex]\left( {1,5} \right)[/tex]. Therefore, the point satisfies the equation of circle.
Substitute 1 for x, 5 for y, -3 for h and 2 for k in general equation of the circle to obtain the radius of circle.
[tex]\begin{aligned}{\left( {x - h}\right)^2}+{\left({y - k}\right)^2}&={r^2}\\{\left( {1 + 3} \right)^2} + {\left( {5 - 2}\right)^2}&= {r^2}\\16 + 9&= {r^2}\\\sqrt{25}&= r\\5&= r\\\end{aligned}[/tex]
The radius of the circle is [tex]\boxed{5{\text{ units}}}.[/tex]
The radius of the circle is [tex]\boxed{5{\text{ units}}}.[/tex]
Learn more:
1. Learn more about equation of circle brainly.com/question/1506955.
2. Learn more about domain of the function https://brainly.com/question/3852778.
3. Learn more about coplanar https://brainly.com/question/4165000.
Answer details:
Grade: Middle School
Subject: Mathematics
Chapter: Circle
Keywords: Circle, centered point, (-3,2), passes point (1,5), standard form of the circle, equation of the circle, center, diameter of circle, radius of the circle,center-radius form, general equation of circle, tangent, area of circle.
How many solutions are there for the system of equations shown on the graph?
No solution
One solution
Two solutions
Infinitely many solutions
Help best answer gets brainliest
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Consider 8x2 - 48x = -104. Write the equation so that a = 1
Answer:
x² + (-6x) = -13
ALSO the second answer,
x² + (-6x) __ = -13 + __
Both blanks are 9
Third answer, factor the trinomial and simplify:
(x + -3 )²= -4
Use the square root property of equality to solve
(x – 3)2 = –4.
The solutions are
The correct option is C. 3 ± 2i.
:D
The equation 8x² - 48x = -104 can be rewritten with 'a' = 1 by dividing all terms by 8 and rearranging to the form ax² + bx + c = 0, yielding x² - 6x + 13 = 0.
Explanation:To rewrite the equation so that 'a' = 1, it would be useful to adjust the coefficients in your equation first. Starting with the given equation: 8x² - 48x = -104. We can divide all terms by 8 to normalize the 'a' coefficient.
Doing that gives us: x² - 6x = -13. Now, to write the equation in the form ax² + bx + c = 0, we can add 13 to both sides which results in: x² - 6x + 13 = 0. Now your equation is in the standard quadratic form with 'a' = 1.
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Restaurant sales totaled 38,676 for the week. Your customer count was 7,325. What did the average customer spend for the week
divide total by number of customers
38,676/7,325 = 5.28
average was $5.28
how do you find the sum of all integers between square root of 12 + square root of 40?
Sergei says that 10%
of a number will always be less than 20%
of any other number.
Complete one inequality to support Sergei's claim and one to show that he is incorrect.
10% of 100 < 20% of 200.
10% of 1000 > 20% of 100.
What are the numbers that make the claims correct?Percentage is the fraction out of an amount that is usually expressed as a number out of hundred. Percentages are a measure of frequency. The sign used to represent percentages is %.
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Which statement could be used to explain why f(x) = 2x – 3 has an inverse relation that is a function?
Answer:
f(x) is a one to one function
Step-by-step explanation:
Algebraic expression that best describes the sequence 2,4,8,16,32,...?
Answer:
Algebraic expression that best describes the sequence is:
[tex]2^{n}[/tex]
Step-by-step explanation:
We have the sequence 2, 4, 8, 16, 32,...?
With the Algebraic expression:
[tex]2^{n}[/tex] (1)
n is the number into the sequence that you want to find, we can prove it if we replace in the equation (1)
For example in the first term, n=1
[tex]2^{1}=2[/tex]
in the second term, n=2, and so on
[tex]2^{2}=4\\2^{3}=8\\2^{4}=16\\2^{5}=32\\2^{6}=64\\[/tex]
The next even integer that is larger than 2n, if 2n is an even integer.
After a devastating winter, when thousands of fish died, an environmental scientist has replenished the trout stock in a fishing pond. He started with 5,000 baby trout and has finished a count to find that, in 4 years, the population is estimated to be 8,500. Assuming an exponential growth pattern, what is the annual growth rate (rounded to the nearest tenth of a percent) of the new trout population?
The annual growth rate of the new trout population is approximately 12.0%.
Explanation:To find the annual growth rate of the trout population, we can use the exponential growth formula:
P = P0ert
where P is the final population, P0 is the initial population, r is the annual growth rate, and t is the number of years.
In this case, we have P = 8,500, P0 = 5,000, and t = 4. Plugging these values into the formula, we can solve for r:
8,500 = 5,000e4r
Divide both sides by 5,000:
1.7 = e4r
Take the natural logarithm of both sides:
ln(1.7) = 4r
Divide both sides by 4:
r ≈ ln(1.7)/4 ≈ 0.120
Final answer:
The annual growth rate of the trout population is calculated using the formula for exponential growth. By substituting the given values into the formula, the growth rate is determined to be approximately 13.41% per year. After rounding, the annual growth rate is 13.4%.
Explanation:
To calculate the annual growth rate of the trout population, we can use the formula for exponential growth, which is P = P0e(rt), where:
P is the final population size,
P0 is the initial population size,
r is the annual growth rate,
t is the time in years.
We know that P0 = 5,000 (initial population), P = 8,500 (final population), and t = 4 years. To find r, we rearrange the formula to solve for r:
r = (ln(P/P0)) / t
Plugging in the values gives us:
r = (ln(8500/5000)) / 4 = ln(1.7) / 4 ≈ 0.1341 or 13.41% per year
Rounding to the nearest tenth of a percent, the annual growth rate is 13.4%.
Rachel wants to paint her cupboard. The length of the cupboard is 2.5 meters, its width is 1 meter, and its height is 2 meters. How much area will she need to paint if she paints both the bases and all the lateral faces?
Answer:
the answer is 10 m2
Step-by-step explanation:
In a set of integers between 18 and 95, inclusive, how many are divisible by 6 but not 12?
If 30% of John's photographs were perfect, but 210 photographs were not perfect, then how many photographs were there in all?
To find the total number of photographs, we use the fact that 30% were perfect, meaning 70% were not perfect. By setting up the equation 0.70x = 210, we can solve for x, finding that there were 300 photographs in total.
If 30% of John's photographs were perfect and 210 were not perfect, determining the total number of photographs involves understanding percentages and basic algebra. Here's the step-by-step breakdown of solving the problem:
Let's call the total number of photographs 'x'.Since 70% of the photographs are not perfect (as 30% are perfect), we know that 0.70x equals the number of not perfect photographs.We can set up the equation: 0.70x = 210.To find 'x', divide both sides of the equation by 0.70: x = 210 / 0.70.This gives us the total number of photographs, x = 300.Therefore, there were 300 photographs in total.
The total number of photographs is 300.
If 30% of John's photographs were perfect, it means that 70% were not perfect. Since 210 photographs were not perfect, we can set up an equation to find the total number of photographs. Let x represent the total number of photographs. We know that 70% of x equals 210:
[tex]\[ 0.70x = 210 \][/tex]
Solving this equation, we find that
[tex]\( x = \frac{210}{0.70} = 300 \)[/tex]
Therefore, there were 300 photographs in total. This calculation assumes that all photographs are either perfect or imperfect, with no other categories.
Which number line represents all of the values of x for the equation x2 = 16? A number line is shown from negative 10 to 0 to positive 10. There are increments of 2 on the number line, and all these are increments are labeled. A dot is shown on positive 4 and is labeled as p. A number line is shown from negative 10 to 0 to positive 10. There are increments of 2 on the number line, and all these are increments are labeled. A dot is shown on positive 8 and is labeled as p. A number line is shown from negative 10 to 0 to positive 10. There are increments of 2 on the number line, and all these are increments are labeled. A dot is shown on positive 4, another dot is shown on negative 4, and are labeled as p and q, respectively. A number line is shown from negative 10 to 0 to positive 10. There are increments of 2 on the number line, and all these are increments are labeled. A dot is shown on positive 8, another dot is shown on negative 8, and are labeled as p and q, respectively.
Answer: Its the 3rd choice.
Frankie purchases a 3 1/2 pound bag of chicken.he uses 1 1/3 of chicken for fajitas how many pounds of chicken are left?
plz help and thank you!
The answer to your question is the third option:
1/2(n+4) = 5/n - 3
For which value or values are the expressions 15k + 9 and 3(2k + 3) + 9k equivalent? A) no values B) 3 C) 3,5 and 8 or D) all values
Final answer:
The expressions 15k + 9 and 3(2k + 3) + 9k are equivalent for all values of k because after simplifying the second expression, it matches the first expression exactly.
Explanation:
To determine for which value or values the expressions 15k + 9 and 3(2k + 3) + 9k are equivalent, we must first simplify the second expression.
Simplify 3(2k + 3) + 9k:
= 6k + 9 + 9k
= 15k + 9.
Now we compare the simplified forms of both expressions. It is clear that they are identical in form, meaning that they are equivalent for all values of k. No additional values are needed; the expressions are universally equivalent as they simplify to the same equation.
9. Jane has a checkbook balance of $68.00. She then writes two checks, one for $5.00 and one for $62.50. She also deposits $75.00. She then uses her calculator to determine her new balance. Which of the following is the correct series of keys she should press? A. [ON/C] [68] [+] [75] [=] [5] [=] [62.50] [=] B. [68] [+] [75] [–] [62.50] [–] [5] [=] C. [ON/C] [68] [–] [5] [–] [62.50] [+] [75] [=] D. [68] [+] [75] [–] [5] [–] [62.50] [=]
it is C
she turns the calculator on, then enters her starting balance them subtracts both checks she wrote then added the deposit.
Select each quadrilateral that has exactly four right angles.
trapezoid
isosceles
trapezoid
parallelogram
rhombus
rectangle
Answer:
Square, and Rectangle
Step-by-step explanation:
the others don't have a 90 degree angle
name the property the equation illustrate -5+(8+10)=(-5+8)+10
The diameter of the moon is 2155 miles. Find volume of the moon. Round answers to the nearest whole number and leave pi in the answer
Answer: [tex]1667978979\pi[/tex] cubic miles
Step-by-step explanation:
We know that the shape of moon is sphere.
The volume of sphere is given by :-
[tex]\text{V}=\dfrac{4}{3}\pi r^3[/tex], where r is the radius of sphere.
Given : The diameter of moon = 2155 miles
Then the radius of moon=[tex]\dfrac{2155}{2}[/tex]
Then , the volume of moon is given by :-
[tex]\text{V}=\dfrac{4}{3}\pi (\dfrac{2155}{2})^3=1667978979.2\pi\approx1667978979\pi \text{ cubic miles}[/tex]
Find the quotient of 9 divided by 5/8 .
9 / 5/8 =
9/1 / 5/8 =
9/1 * 8/5 = 72/5 = 14 2/5
how to factorise x squared minus 16
HELP I'M BEING TIMED FOR THIS TEST!!!
Which applies the power of a product rule to simplify (5t)^3?
A. (5t)^3 =5t^3
B. (5t)^3 = 3(5t) = 15t
C. (5t)^3 = 5^3 t^3 = 125t^3
D. (5t)^3 = 5^3t = 125t
Anna took Allie out for lunch their lunches cost $13.28 and $14.25 including tax and tip and a paid with $40 how much change did Anna receive
you can buy 3 apples at quick market for $1.17, you can buy 5 of the same apples at Stop and Save for $2.40.
a.Which store is the better buy?
b. How much will you save per apple if you purchase it from the cheaper store?
write general rule for adding
a. two integers with the same sign.
b. two integers with different signs.
c. two integers that vary in sign.
When adding integers, if the signs are the same, add the numbers and keep the sign. If the signs are different, subtract the smaller number from the larger number, using the sign of the larger number.
Explanation:To offer some general rules for adding integers, consider the following scenarios:
When we add two integers with the same sign, we add the absolute values of the numbers and keep the common sign. For example, (-4) + (-3) equates to -7, as they are both negative. If we are combining two integers with different signs, we subtract the smaller number from the larger number and use the sign of the larger number. For instance, 7 + (-2) equals 5, because 7 is larger and positive. When adding two integers that vary in sign, it suggests that one number could be positive and the other negative or vice-versa. Thus, we follow the second rule mentioned above. For example, -6 + 3 gives -3 because 6 is bigger and negative. Learn more about Adding Integers here:
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Why is the polynomial, 4x^2y + 5xy classified as a 3rd degree binomial?
a jar of 25 lollipops in a clinic has 7 that are grape, 10 cherry, and 8 orange. If a nurse selects 4 lollipops randomly, what is the probability that they will all be grape?
There is 16 pink stripes and green stripes. Find the ratio o pink stripes to green stripes