Need help with this

Answer:

Rational

Step-by-step explanation:

[tex]2^{-3}[/tex] simplifies to [tex]\frac{1}{8}[/tex].

Therefore, it is rational.

[tex]2^{-3}\\\\\text {Apply negative exponent rule: } a^{-n} = \frac{1}{a^n} \\2^{-3}= \frac{1}{2^3}\\ \rightarrow 2^3 = 2*2*2=8\\\boxed{2^{-3}=\frac{1}{8}}[/tex]

Brainliest Appreciated.

Answer:

4573.8

Step-by-step explanation:

Answer:

c. 5.6m

Step-by-step explanation:

pi x 8 x 80/360 = 5.58..

round to 1 d.p. = 5.6

Answer:

25 in.2

Step-by-step explanation:

Because all sides of a square are equal, and the perimeter is 20 in. We divide 20 by 4. This gives us 5 in. for each side. The area of a square is length times width, so we do 5x5. This means the area of the square is 25 square inches.

Answer:

x 9 and 27

Step-by-step explanation:

hope this helps :)

Answer:

666 liters

Step-by-step explanation:

If each room takes 1/2, then 2 room takes 1 liter. So you would do 2•333=666

Answer:

the answer is B

Step-by-step explanation:

because c=3.14 x diameter

diameter= 2.5+2.5=5

3.14 x 5 = 15.7ft

which equals B

Answer: 15.7

Step-by-step explanation: hope it helps

Answer:

5. y = 2x + 4

6. y = (-1/2)x - 2

Step-by-step explanation:

5. We want to find the slope-intercept form of this, which is y = mx + b, where m is the slope and b is the y-intercept.

Slope is change in y divided by change in x. Here, let's take two random points: (-2, 0) and (0, 4). Then we have:

m = (4 - 0) / (0 - (-2)) = 4 / 2 = 2

The slope is thus 2.

The y-intercept is where the line crosses the y-axis. We see it does so at the point (0, 4), so b = 4.

Our equation is thus: y = 2x + 4.

6. Again, let's find the slope. Pick any two points: (-4, 0) and (0, -2). The slope will be:

m = (-2 - 0) / (0 - (-4)) = -2 / 4 = -1/2

Now, look at the point (0, -2); that's where the line crosses the y-axis, so the y-intercept is b = -2.

Thus, the equation is: y = (-1/2)x - 2.

Answer:

5. y = 2x + 4

6. y = -0.5x - 2

Step-by-step explanation:

5. Slope: (4-0)/(0--2) = 4/2 = 2

y-intercept: 4

y = 2x + 4

6. slope: (-2-0)/(0--4) = -2/4 = -0.5

y-intercept: -2

y = -0.5x - 2

Answer:

64 ounces for $5.49

Answer:

A)

Step-by-step explanation:

1 and 2 are remote interior angles.

Remote interior angles does not share vertex of the triangle with the exterior angle.

Here 4 is the exterior angle.  

Answer:

A) 1 and 2

Step-by-step explanation:

got it right

Answer:

The selling price is $9.60.

Answer:

the selling price of the pool noodle is $9.60.

Step-by-step explanation:

The selling price of the pool noodle can be calculated by adding the markup to the cost price.

Step 1: Calculate the markup amount. The markup is 20% of the cost price of $8, which is calculated as: 20/100 * $8 = $1.60.

Step 2: Add the markup amount to the cost price to find the selling price. The selling price is $8 + $1.60 = $9.60.

Answer:

A,B,D

Step-by-step explanation:

"The correct statements about the angle relationships in rectangle ABCD are:

- AngleBEA and AngleCED are vertical angles and equal 76°.

- AngleABE and AngleCBE are complementary angles.

- AngleBEC and AngleCED are vertical angles.

- AngleBEA and AngleAED are supplementary angles whose sum is 180°.

- AngleBEC and AngleAED are adjacent angles.

1. AngleBEA and AngleCED are vertical angles. Vertical angles are the angles opposite each other when two straight lines intersect. Since BD and AC intersect at E, angle BEC and angle AED are vertical angles and therefore equal. Given that angle BEC is 52 degrees, angle AED is also 52 degrees. However, the question states that angle DAE is 104 degrees, which means angle AED is 180 - 104 = 76 degrees (since angle DAE and angle AED are supplementary angles as they form a straight line). Therefore, angle CED is also 76 degrees, not 52 degrees as initially stated. This corrects the inaccuracy in the question.

2. AngleABE and AngleCBE are complementary angles. Complementary angles are two angles whose measures add up to 90 degrees. Since ABCD is a rectangle, angle ABE and angle CBE are right angles (90 degrees). Angle ABE is made up of angles ABE and BEC, and since angle BEC is 52 degrees, angle ABE is 90 - 52 = 38 degrees. Similarly, angle CBE is made up of angles CBE and BEC, so angle CBE is also 38 degrees. Therefore, angles ABE and CBE are complementary as their sum is 90 degrees.

3. AngleBEC and AngleCED are vertical angles. As previously explained, vertical angles are equal, so angle BEC and angle CED are equal, both being 52 degrees.

4. AngleBEA and AngleAED are supplementary angles. Supplementary angles are two angles whose measures add up to 180 degrees. Since angle BEC is 52 degrees and angle BEC and angle BEA are adjacent angles, angle BEA is 180 - 52 = 128 degrees. Angle AED is 76 degrees as previously calculated. Adding angle BEA and angle AED gives us 128 + 76 = 204 degrees, which is incorrect. The correct calculation should be that angle BEA is 76 degrees (as it is vertical to angle CED which is 76 degrees), and angle AED is 104 degrees (as given in the question). Therefore, angle BEA and angle AED are supplementary as their sum is 76 + 104 = 180 degrees.

5. AngleBEC and AngleAED are adjacent angles. Adjacent angles share a common side and a common vertex. In this case, angle BEC and angle AED share side AE and vertex E. This statement is true as they are indeed adjacent angles."

Answer:

I think it is d.

Step-by-step explanation:

Answer:

I'm pretty sure the answers D

Step-by-step explanation:

Answer:

i got u he was eaten by a bear.

Step-by-step explanation:

Answer:

to kiss the penguins

Step-by-step explanation:

Answer:

The constant would be A) 9

Step-by-step explanation:

The Constant in a math expression is One number that is on its own or without a varialbe

Answer:

$9.20.

Step-by-step explanation:

For this question, you would have to figure out how much the total would be to get this answer.

Multiply 10 x .08 and you would get 0.8

Add those together and you would get 10.8.

Next you would subtract 20 - 10.8 and your answer is $9.20.

Feel free to let me know if you need more help. :)

Answer:$9.20

Step-by-step explanation

1.) 8/100 is .08

2.) Multiply 10 by .08 to find how much is 8% of $10. Which is $0.80

3.) The sunscreen costs $10.80. You subtract that amount from $20.

4.) The change would be $9.20

Answer:

Based on the model,the length of the wall is 9/8 ft, the width of the walk is 1/2 ft, and the height of the wall is 11/8. The volume of the portion of security wall that Tim has constructed so far is 99/128 cu ft.

Step-by-step explanation:

In the picture attached, part of a security world castle is shown.

length: 9 blocks, which is equivalent to 9*(1/8) = 9/8 ft

height: 11 blocks, which is equivalent to 11*(1/8) = 11/8 ft

width: 1/2 ft

Volume: length*height*width = (9/8)*(11/8)*(1/2) = (9 * 11 * 1)/(8 * 8 * 2) = 99/128 cu ft

Based on the model, the length of the wall is 9/8 ft, the width of the walk is 1/2 ft, and the height of the wall is 11/8. The volume of the portion of security wall that Tim has constructed so far is 99/128 cu ft.

Tim is building a model of a castle with small wooden cubes. Each wooden cube has a side length of 1/8 ft. Given the following information, we will solve the problem step by step:

Length of the Wall

Assuming we know the total number of cubes used to form the length of the wall, we can multiply the number of cubes by the side length of each cube (1/8 ft) to obtain the length in feet.

Width of the Wall

We are given that the width of the wall is 1/2 ft.

Height of the Wall

If we assume that the wall height in the model is given in terms of the number of cubes stacked, we can multiply that number by 1/8 ft per cube to determine the total height in feet.

Volume of the Security Wall

To find the volume, we will assume there is a certain number of cubes used for the entire structure. The volume of a cube with side length 1/8 ft is:

The total volume of the wall is then the volume of one cube multiplied by the total number of cubes used.

Therefore, to complete the details:

Ensure you have the number of cubes to accurately determine the final measures.

Answer:

10, he should round the quotient up by 1 because of the remainder

Step-by-step explanation:

Brandon did all of the math work correctly, but you can't over crowd the bus with 13 people. The 10th bus will not be filled to capacity but it would be enough for the 4 remaining fourth graders.

Answer:

False

Step-by-step explanation:

0.5 + 6.38= 6.88

In general you'd round your answer to the greatest level of precision used in the question, not the least.

The statement is false. The explanation is given.

Decimals are numbers that have two components, a whole number component and a fractional component, which are separated by a decimal point.

Given:

A phrase: 0.5 + 6.38= 6.9 because 0.5 is precise to the tenth digit, so the answer must also be rounded to the nearest tenth.

0.5 + 6.38 = 6.88

To round the decimals:

Round the prior digit down if the final digit is less than 5. However, you should round the preceding figure up if it is 5 or above.

6.88 = 6.9.

Therefore, the statement is false.

To learn more about the decimal;

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Answer:

20√3 cm

Step-by-step explanation:

Altitude of an equilateral triangle splits it into 2 equal right triangles, it bisects the base and the angle opposite to the base.

Let the altitude be x. Then as per Pythagorean theorem:

Correct choice is the second one

Answer:

with (-11, 1) as the vertex

Step-by-step explanation:

The vertex form of a parabola is given by

y = a (x-h) ^2 +k

where (h,k) is the vertex

h(x) = -(x + 11)^2 +1

is written in vertex form

h(x) = -(x  -  -11)^2 +1

  with (-11, 1) as the vertex

Answer:

Meow

Squeak

bark

Caw

baa

Step-by-step explanation:

Step-by-step explanation:

first you do 2x8x9=144

now you have to do 1x3x8=24

then you add them so it would be 168 and that is your answer

Answer:

B: The hypothesis is revised and another experiment is conducted.

Step-by-step explanation:

If several different experiments all reveal that the hypothesis has not been confirmed, a revision of the hypothesis is in order. Perhaps it was the hypothesis all along that needed amendment.

Answer:

Theta =  120 degrees, 420 degrees, 480 degrees, 780 degrees, and 840 degrees

60 + 360 = 420 degrees,  

60 + 720 = 780 degrees,  

120 + 360 = 480 degrees,

120 + 720 = 840 degrees

Step-by-step explanation:

90  to 870 degrees for theta.

sin (theta) = root(3) /2

We see this comes from a 30-60-90 triangle.

theta is 60 degrees

but we want theta from 90 to 870 degrees.

120 degrees works too.

so we try to find all the co-terminal angles to 60 and 120 degrees that satisfy the conditions.

60 + 360 = 420 degrees,  

60 + 720 = 780 degrees,  

120 + 360 = 480 degrees,

120 + 720 = 840 degrees

Answer:

x = 80

Step-by-step explanation:

We know AEC + CEB = 180 since it forms a line

AEC + 160 = 180

AEC = 20

We also know that

AEC + AEF + FED = 180 since it forms a line

20 + x+ 80 = 180

Combine like terms

100 +x = 180

Subtract 100 from each side

100+x-100= 180-100

x = 80

The midpoint of a line segment partitions the line segment into a ratio of 1:1, meaning it divides the segment into two equal parts.

In mathematics, a midpoint refers to a point that is exactly in the middle of a line segment. The definition of midpoint implies that it divides or partitions a line segment into two equal parts. Therefore, the ratio is 1:1.

Consider the given line segment AB with the midpoint M. If the length of the segment AB is L, then AM = MB = L/2. This shows that the line segment AB is divided into two equal parts by M, thus resulting in a 1:1 ratio.

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The correct answer is 1:1.

The midpoint of a line segment is the point that divides the segment into two equal parts. By definition, these two parts are of the same length, which means that the ratio of their lengths is 1:1. This is because the midpoint is equidistant from both endpoints of the line segment, effectively splitting the segment into two congruent segments.

To illustrate this with an example, let's consider a line segment AB with a midpoint M. The length of segment AM is equal to the length of segment MB. If we denote the length of AM as x and the length of MB as y, we have:

x = y

Expressing this as a ratio, we get:

x/y = 1/1

This ratio represents the division of the line segment by its midpoint, and it shows that the division is equal on both sides of the midpoint, hence the ratio of 1:1.

Answer:

A3

Step-by-step explanation:

Edit for clarification A means 10 and 3 is the remainder so 163/16=10 remainder 3 so the A is 10 and the 3 is the remainder so A3 means 10 remainder 3.

Answer:

A3.

Step-by-step explanation:

163 / 16 until ya get 0.

--> 163 / 16 = 10 with a remainder of 3

--> 10 / 16 = 0 with a remainder of 10

I then looked at a chart to see what this would mean if I was to turn it. It said A3.

Answer:

81x in 2 (B)

Step-by-step explanation:

A = πr^2

Radius = 9

The Radius is 9 because you divide 18 by 2, the equation for Circumference is 2πr.

Answer: 81

Plug 9 into r in the Area equation.

π9^2

81π

Answer:

D.) 73.7

Step-by-step explanation:

Took it on edge

The measure of angle B= 73.739.

Trigonometry is the branch of mathematics that deals with the relationship between ratios of the sides of a right-angled triangle with its angles. The ratios used to study this relationship are called trigonometric ratios, namely, sine, cosine, tangent, cotangent, secant, cosecant.

There are basic six ratios in trigonometry that help in establishing a relationship between the ratio of sides of a right triangle with the angle. If θ is the angle in a right-angled triangle, formed between the base and hypotenuse, then

given:

AC= 24, BC= 25

Now,

The opposite is the side facing the angle while the adjacent is the other third side.

Using Trigonometry

sin B = P/B

sin B= 24/25

sin B= 0.96

B= arc sin(0.96)

B= 73.739

Learn more about Trigonometry here:

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