Answer: The answer is B. x=125
Step-by-step explanation: Brainliest plz :)
Work out the value of 5 to the power of a if it equal 1/125
Answer:
a = -3
Step-by-step explanation:
Step 1: Since we're told that 5 to the power of a = 1/125, we can use the following equation to solve for a:
5^a = 1/125
Step 2: Take the log of both sides
log(5^a) = log(1/125)
Step 3: According to the power rule of logs, we can bring a down and multiply it by log(5):
a * log(5) = log (1/125)
Step 4: Divide both sides by log(5) to solve for a:
(a * log(5) = log(1/125)) / log(5)
a = -3
Optional 5: We can check our answer by plugging in -3 for a and seeing if we get 1/125 when completing the operation:
5^-3 = 1/125
1/(5^3) = 1/125 (rule of exponents states that a negative exponent creates a fraction with 1 as the numerator and the base (5) and exponent (-3 becoming 3) as the denominator
1/125 = 1/125
Can someone please help me!! Ive been asking for help and I not getting any.. please help
The area of a circle is represented by the equation A = π r 2 , where r is the radius. The area is 64 π m 2 . What is the length of the diameter? 4 meters 4 meters 8 meters 8 meters 16 meters 16 meters 32 meters 32 meters
Answer:
16 meters
Step-by-step explanation:
Area of a circle = πr²
Diameter of a circle = 2 x r
where r = radius
If area of the circle is given, the radius can be determined by finding the square root of the area
64 πm² = πr²
r² = 64 πm²
r = √64
r = 8m
diameter = 8 x 2 = 16m
1. A cyclist travels 56 miles in 4 hours. What is the cyclist's speed in feet per MINUTE?
Answer: 20.5 feet per second
Step-by-step explanation:
Find both the vector equation and the parametric equations of the line through (0,0,0) that is perpendicular to both u = <1,0,2> and w = <1,-1,0> where t=0 corresponds to the given point.
The vector equation of the line is r(t) = t<2, 0, -1>, and the corresponding parametric equations are x = 2t, y = 0, z = -t.
To find the vector equation and parametric equations of the line passing through the point (0, 0, 0) and perpendicular to both u = <1, 0, 2> and w = <1, -1, 0>, we can use the cross product of u and w.
The cross product of two vectors u and w gives us a vector that is perpendicular to both u and w. So, by finding the cross product, we can determine the direction vector of the line.
First, we calculate the cross product of u and w:
u x w = <1, 0, 2> x <1, -1, 0>
Using the determinant rule for the cross product, we have:
u x w = <0(0) - 2(-1), 2(0) - 1(0), 1(-1) - 0(1)>
= <2, 0, -1>
The resulting vector <2, 0, -1> is the direction vector of the line.
Next, we can write the vector equation of the line:
r(t) = <x₀, y₀, z₀> + t<2, 0, -1>
Since the line passes through the point (0, 0, 0), the equation simplifies to:
r(t) = t<2, 0, -1>
This equation represents the line in vector form.
To obtain the parametric equations, we can express each component separately:
x = 2t
y = 0
z = -t
These equations represent the line parameterized by the variable t, where t = 0 corresponds to the given point (0, 0, 0).
In summary, the vector equation of the line is r(t) = t<2, 0, -1>, and the corresponding parametric equations are x = 2t, y = 0, z = -t.
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which expression is not equal to 30?
(12020) × (2+3)
(2 x 60 ÷ 30) x (24+2)
2 + (30 − 8 ÷ 4)
(9 × 10) ÷ (4+1) + 12
Answer:
the first 2 are not equal to 30, while the other 2 equal 30
Answer: (12020) x (2+3), (2 x 60 ÷ 30) x (24+2)
Step-by-step explanation:
(12,020) x (2+3) = 60,100
(2 x 60 ÷ 30) x (24+2) = 104
Write a recursive formula for the arithmetic sequence:
7,4,1,-2
Answer:
N - 3
Step-by-step explanation:
It is a series of -3 so:
7 -3 = 4
4 - 3 = 1
1 - 3 = -2
So:
N-3
where N is the present value in the sequence.
The concept that a message gives different meanings to different objects is called _____.
a. ​encapsulation
b. ​polymorphism
c. ​linear addressing
d. ​dynamic addressing
The concept that a message gives different meanings to different objects is called option (b) polymorphism.
Polymorphism is a fundamental concept in object-oriented programming (OOP) that allows different objects to respond to the same message or method invocation in different ways. In other words, it allows objects of different classes to be treated as if they were of the same class, as long as they implement the same method or message.
This can make code more flexible, reusable, and easier to maintain. Polymorphism is achieved through inheritance, interfaces, or overloading methods. For example, a "draw" method could be implemented differently for different shapes, such as circles, rectangles, or triangles.
Therefore, the correct option is (b) polymorphism
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The triangles are similar. Find the value of the variable.
Answer:
y = 27
Step-by-step explanation:
The given are two similar triangles.
We can use the following equation to find the variables:
\(\frac{y-3}{32} = \frac{18}{24}\)
Cross multiply fractions
32*18 = 24(y-3)
576 = 24y - 72
add 72 to both sides
648 = 24y
divide both sides by 24
27 = y
PLZZ HELP IN THIS :((
Answer:
4 i think i did this yesterday
Step-by-step explanation:
what is the last digit of 3 with a power of 2011
So to find any last digit of 3^2011 divide 2011 by 4 which comes to have 3 as remainder. Hence the number in units place is same as digit in units place of number 3^3. Hence answer is 7.
For the sequence −9, −3, 3, 9, 15, ... write the recursive formula. a(1) = __, a(n) = a(n-1) + d *
Answer:
the answer to the question is online if you
If every vertex of a regular octagon is connected to every other vertex, How many triangles are formed in total?
Answer: 8 triangles
Step-by-step explanation:
If you connect lines from the middle vertex to the outside vertices you will see that the octagon can be "cut up" into 8 even triangles
Most trigonometric equations have unique solutions.true or false
True, Most trigonometric equations have unique solutions.
Most trigonometric equations have unique solutions . Trigonometric equations often have multiple solutions due to the periodic nature of trigonometric functions such as sine, cosine, and tangent. When solving trigonometric equations, you need to consider all possible solutions within the given interval, typically by applying general solutions or analyzing the periodicity of the function involved.
However, there are some cases where there may be multiple solutions or no solution at all. It is important to consider the domain and range of the trigonometric functions when solving these equations in detail. Most trigonometric equations have unique solutions . Trigonometric equations often have multiple solutions due to the periodic nature of trigonometric functions such as sine, cosine, and tangent.
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The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 25-kg object stretches a spring 65 cm, how far will a 14-kg weight stretch the spring?
The distance of the object for a 14-kg weight stretch the spring is 36. 4cm
How to determine the valueFrom the information given, we can see that the two elements vary directly to each other.
Given that;
The distance is represented with DThe weight of the object is represented with WThis can be represented thus;
D ∝ W
Now, find the constant value
D/W = k
Substitute the values
k = 65/25
k = 2. 6
if w = 14kg, then
D = 2. 6 × 14
D = 36. 4cm
Thus, the value is 36. 4kg
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NO IDEA HELP PLS SO CONFUSING
Answer:
1. slope formula?
2. (0,6)
3. y= -3x+6
Step-by-step explanation:
because the original formula to make a like is y=mx+b.
just plug the values you have into the equation knowing that m is the slope and b is the y intercept.
the slope would be rise/run which in this case the rise is -6 and the run is 2.
so m= -6/2 = -3
and b = 6 because x is 0 when y is 6 for this graph.
(btw I put -6 as the rise because you are going down 6 units instead of going up)
A number line going from negative 5 to positive 5. From positive 2 to positive 5 is positive 3.
David added 2 and –3 using the number line tool. Which of the following errors did he make?
He started at 2 instead of zero.
He moved right 2 units for positive 2.
He moved right 3 units for negative 3.
He started at zero instead of 2.
The correct statement is :David started at 0 instead of 2
What is a number line in math?A number line is a horizontal line that has equally spread number increments. The numbers included on the line will determine how the number on the line can be answered. The question that goes with the number determines how it will be used, for example, plotting a point.
Given here: In a number line the interval (-5,5) is marked and 2 to 5 is 3
The right steps are
Add 3 to 2 to obtain the required number as there are 3 spaces between 2 and 5
Thus 2+3=5 which is the required answer
but David addes 2-3=-1 which is incorrect.
Hence, David started at 0 instead of 2
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The area of square C is 100 square units and the area of square B is 64 square units. What would be the area of square A? CA? 64 units A B. C. D. 100 units² 2 units 6 units 36 units 64 units 164 units
We don't have enough information to determine the exact side length of either square A or square C, so we cannot directly calculate their areas. However, we can use the relationship between the areas of the squares to make some conclusions.
Since the area of square B is 64 square units, we know that its side length is √64 = 8 units.
Similarly, since the area of square C is 100 square units, we know that its side length is √100 = 10 units.
Square A is composed of square B and four identical triangles. We know the area of square B is 64 square units, so we need to determine the area of the four triangles to find the area of square A.
Each triangle has a base of 8 units (which is also the length of one side of square B) and a height of half the length of one side of square A. Let's call this length x.
The area of one triangle is (1/2) * 8 * x = 4x square units.
The total area of the four triangles is 4 times the area of one triangle, which is 16x square units.
Therefore, the area of square A is 64 + 16x square units.
We still don't know the exact value of x, but we can make some observations. Since square A is larger than square B, we know that x > 4. And since the triangles make up exactly half of square A (the other half being square B), we know that the area of square A is twice the area of the four triangles. Therefore:
64 + 16x = 2(16x)
64 + 16x = 32x
64 = 16x
x = 4
So the length of each side of square A is 8 + 2x = 16 units, and its area is 64 + 16x = 128 square units.
The length of CA is just the length of one side of square C, which is 10 units.
Please help I have searched this question and have not found it yet so please help me answer this, I am bad at math
You want to go to Africa for a photo safari. You need $2,800. You can get $1,000 from your savings and family and you can save $30 per week. How many weeks will it take you to save up the money for the trip?
A. 127 weeks
B. 60 weeks
C. 93 weeks
D. 84 weeks
Please select the best answer from the choices provide
Answer:
B 60
Step-by-step explanation:
because 30x60=1800 and since you already have 1k you add the 1800 to get 2800.
PLS HELPPP TIME LIMIT!!!!
58º + 56º = 114º
180º - 114º = 66º
A backpack is on sale for 30% off. If the original price is
$43.75, what is the new price after the discount?
Answer: $30.63
Step-by-step explanation: The backpack is on sale for 70% of the original price, given that it is 30% off.
0.70 * 43.75 = 30.625, round to the nearest cent to get $30.63
Answer:$13.13
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The function that represents the graph above is... (circle one from the options below)
a. f(x) = -(x + 3)²-1
b. f(x)=(x+3)²-1
C. f(x)= (x-3)2 -1
Option b. f(x) = (x + 3)² - 1 represents the given graph based on its matching shape, vertex, and direction of opening.
Based on the options provided, the function that represents the graph above is b. f(x)=(x+3)²-1.
To determine the correct option, let's analyze the given graph. We observe that the graph is a parabola that opens upward and has its vertex at the point (-3, -1).
This vertex represents the lowest point on the graph.
The general form of a quadratic function (parabola) is f(x) = ax^2 + bx + c, where a, b, and c are constants.
Comparing the graph to the options provided:
a. f(x) = -(x + 3)² - 1:
This option is incorrect because it has a negative sign in front of the squared term, which would result in a downward opening parabola. However, the given graph shows an upward opening parabola.
b. f(x) = (x + 3)² - 1: This option is correct because it matches the form of the graph, with the squared term (x + 3)² resulting in an upward opening parabola.
The vertex form of this function is f(x) = a(x - h)² + k, where (h, k) represents the coordinates of the vertex. In this case, (h, k) = (-3, -1).
c. f(x) = (x - 3)² - 1: This option is incorrect because it has a different value for the x-coordinate of the vertex.
The given graph shows the vertex at (-3, -1), not (3, -1).
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CORRECT ANSWER GETS BRAINLIEST
If Angela's grade in math class was 64% without her culminating mark, and she got 65% on her culminating, which was worth 30% of her grade, what's her overall grade now?
PLEASE help
Allen mixes 1 cup of water that is 150°F and 1 cup of cold chicken broth that is 50°F. The end temperature of the mixture would be about___________
. Chris combines 2 cups of soup that is 50°F with 1 cup of water that is 150°F. The end temperature of the mixture would be ______
Answer:
1) 100 degrees F
2) 50 degrees F
Step-by-step explanation:
its just simple subtraction
Solve for w.
W/4 = 4 What does W equal?
Answer:
16
Step-by-step explanation:
sooo all you have to do is make W alone. to do that you multiply 4 to both sides of the equation
W = 4(4)
w = 16
8. Madison can complete two skirts in 15 days. How long will it take her to
complete eight skirts?
Answer:
60 days
Step-by-step explanation:
2:15
x4 x4
8:60
Jacey has 40 pizzas to sell in the concession stand at a basketball game . Each pizza has been cut into 8 slices of equivalent size. In the first hour, Jacey sold 16 3/8 pizzas . In the second hour , she sold 18 3/4 pizzas . How many pizzas does Jacey have left to sell?
what is the circumstance of a bicycle tire with a radius of 11 inches?
Circumference = 2 x r x pi
Circumference = 2 x 11 x pi
Circumference = 22pi or 69.08 inches depending on what format the answer is supposed to be in.
Answer:
Solution :-Circumference = 2πr
Circumference = 2 × 3.14 × 11
Circumference = 22 × 3.14
Circumference = 69.08 in
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Please Help Me ASAP!!!!
8x=48 uhhhhhhhhhhhhhhhhhhhhh
At Jefferson Middle School, eighty-two students were asked which sports they plan to participate in for the coming year. Twenty students plan to participate in track and cross country; six students in cross country and basketball; and eight students in track and basketball. Twelve students plan to participate in all three sports. A total of thirty students plan to participate in basketball, and a total of forty students plan to participate in cross country. Ten students don't plan to participate in any of the three sports.
How many students plan to just participate in basketball?
A) 4
B) 30
C) 16
or
D) 56?
Answer:
30 students they are including the students that are also planning to participate in other sports to.