The area of a circle is 225 pie square inches. Find the area of the sector whose central angle is 45°.

Answers

Answer 1
Consider this option:
The central angle for whole circle is 360°, it means that angle 45° has 45/360=1/8 part of the circle.
If the area of the circle is 225π, then the area of the sector 45° is 225π/8≈28.125π (in.²)

answer: 28.125π in².
Answer 2

The area of the sector of the circle is 28.125π inches²

What is a Circle?

A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “centre”. Every line that passes through the circle forms the line of reflection symmetry. Also, the circle has rotational symmetry around the centre for every angle

The total internal angle is 360° about the centre

The area of the sector of the circle = ( θ / 360° )πr²

The perimeter of circle = 2πr

The area of the circle = πr²

where r is the radius of the circle

Given data ,

Let the area of the circle be = A

The value of A = 225 inches²

Now , the area of the sector whose central angle is 45° is calculated by

The area of the sector of the circle = ( θ / 360° )πr²

Substituting the value for θ = 45° , we get

Area of the sector of the circle = ( 45/360 ) x 225

                                                    = ( 1/8 ) x 225

                                                    = 28.125 inches²

Therefore , the area of the sector is 28.125 inches²

Hence , The area of the sector of the circle is 28.125π inches²

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Related Questions

Barney is eight years older than Nemo. In seven years the sum of their ages will be 46. How old is Barney now?.

Answers

Let's represent Nemo's age with an n.

Barney is 8 years older so his age is nemo's plus 8. That is, Barney's age is n + 8

In seven years they will each be the age they are now plus 7. So, Nemo will be n + 7 and Barney will be n + 8 + 7. If the sum of their ages will be 46 we know that when we add these expressions we should get 46, so let's set the sum to 46 and solve for n.

n + 7 + n + 8 + 7 = 46
2n + 22 = 46
2n = 46 - 22
2n = 24
n = 12

That means that Nemo's age is 12.
Since Barney is 8 years older his age is 12 + 8 = 20.

To check our work we see that in 7 years Nemo will be 12 + 7 = 19 and Barney will be 20 + 7 = 27. Together that is 19 +27 = 46 as expected.

A grocery store received two shipments of watermelon. Each watermelon in a shipment was weighed, then a line plot was made of all of the weights in a shipment. What statement about the two plots’ distributions is true?

The degree of overlap between the two distributions is moderate.

The degree of overlap between the two distributions is high.

There is no overlap between the two distributions.

The degree of overlap between the two distributions is low

Answers

Answer:

The degree of overlap between the two distributions is moderate.

Step-by-step explanation:

A grocery store received two shipments of watermelon. Each watermelon in a shipment was weighed, then a line plot was made of all of the weights in a shipment. What statement about the two plots’ distributions is true?

The true statement is - option A - The degree of overlap between the two distributions is moderate.

Answer:

A/The degree of overlap between the two distributions is moderate.

Step-by-step explanation:

Hope this helps!

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evidence:

Determine whether a triangle can be formed with the given side lengths. If so, use Heron’s formula to find the area of the triangle. a = 240 b = 121 c = 263

Answers

The sum of the two short sides is longer than the long side, so these lengths will form a triangle.

Heron's formula makes use of
.. s = (a +b +c)/2 = (240 +121 +263)/2 = 312

Area = √(s(s -a)(s -b)(s -c))
.. = √(312*72*191*49)
.. = √210,240,576
.. ≈ 14,499.675

Apply the distributive property to create an equivalent expression.
1/2 (2a-6b+8) =?

Answers

Answer:

a - 3b + 4

Step-by-step explanation:

The distributive property indicates that two or more terms present in a sum or subtraction multiplied by another quantity, is equal to the sum or subtraction of the multiplication of each of the terms of the sum or subtraction by the number.

So,

1/2 (2a-6b + 8) = 1/2 (2a) + 1/2 (-6b) + 1/2 (8)

Now we multiply the factor (1/2) for each of the three terms,

1/2 (2a) + 1/2 (-6b) + 1/2 (8) = (2/2)a + (-6/2)b + (8/2) = a – 3b + 4

The solution is a - 3b + 4,

So we say that 1/2(2a - 6b + 8) is equivalent to a - 3b + 4.

The distributive property is solved to the equation and the expression is represented as A = a - 3b + 4

Given data:

To apply the distributive property to the expression 1/2(2a-6b+8), distribute the 1/2 to each term inside the parentheses.

1/2(2a-6b+8) can be rewritten as:

(1/2) * 2a + (1/2) * (-6b) + (1/2) * 8

Now, let's simplify each term:

(1/2) * 2a = a

(1/2) * (-6b) = -3b

(1/2) * 8 = 4

Putting it all together, the expression becomes:

A = a - 3b + 4

Hence, on applying the distributive property to 1/2(2a-6b+8) gives the equivalent expression as a - 3b + 4.

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penny and her two friends each ate 1/6 of cake . how much cake did they eat

Answers

they ate 1/3 of the cake
i think they ate 3/6 or 1/2 of the cake 

The square prism has the same measurements as a square pyramid. How many times larger is the prism than the pyramid ?



Select one:
a. 3
b. 1/3
c. 2

Answers

Volume of Rectangle =  (Area of Base)(Height)
Volume of Square Pyramid = (1/3) (Area of Base)(Height)

The prism is 3 times larger than the pyramid
Answer: A

Can you please help me ??

Answers

An obtuse triangle has a obtuse angle that measures larger than 90 degrees.
 
 You have to apply the Phytagorean Teorem, which is:
c^2 = a^2 + b^2 
 c=√(a^2 + b^2)
 
 "c" is the hypotenuse.
 "a" and "b" are the legs of the triangle (10 inches and 15 inches).
Let's substitute those values in the equation:
 
 c=√(a^2 + b^2)
 c=√(10^2 + 15^2)
 c=√325
 c=18 inches
 
 What is the smallest possible whole-number length of the unknown side?
 
 It is the next largest integer greater: 19 inches.

A dozen long stem red roses cost $57 what is the unit rate of for roses

Answers

Let
r--------------------- > unit rate of roses
 we know that
A dozen long stem red roses cost ------------- >$57
therefore
r=(57/12)=4.75

the unit rate of rose (r) is $4.75 per rose


What are the roots of the polynomial equation? x2+6x−72=0

Answers

⇒Δ=6^2+4*72= 36+288=324
V324=18

x1= ( -6+18)/2=6
x2= (-6-18)/2=-24/2=-12

⇒ x1= 6
x2= - 12

KJ is tangent to circle C at J, KL is tangent to circle C at L, and mMLarc = 138°. Find mMJarc.

Answers

Given that the external angle formed by the two tangent is 40° and the

part of [tex]m \widehat{LMJ}[/tex] is 138°, we get that  [tex]m \widehat{MJ}[/tex] = 87°.

Which property can be used to find  [tex]m \widehat{MJ}[/tex] ?

Using the two tangent angle theorem, we have;

[tex]m \angle K = \mathbf{ \dfrac{1}{2} \times \left(\widehat{LMJ} - \widehat{LJ} \right)}[/tex]

m∠K = 40°

[tex]m \widehat{ML}[/tex] = 138°

[tex]m \widehat{LMJ}[/tex] = [tex]m \widehat{ML}[/tex] + [tex]m \widehat{MJ}[/tex]

[tex]m\widehat{LJ} = \mathbf{360^{\circ} - \left(m\widehat{ML} + m\widehat{MJ} \right)}[/tex]

Which gives;

[tex]m \angle K = \dfrac{1}{2} \times \left(\widehat{LMJ} - \left( 360^{\circ} - \left(m\widehat{ML} + m\widehat{MJ} \right) \right)\right)[/tex]

Therefore;

[tex]m\angle K= \dfrac{1}{2} \times \left(m \widehat{ML} + m \widehat{MJ} - \left( 360^{\circ} - \left(m\widehat{ML} + m\widehat{MJ} \right) \right)\right)[/tex]

[tex]40^{\circ}= \mathbf{ \dfrac{1}{2} \times \left(138^{\circ} + 2 \cdot m \widehat{MJ} - 232^{\circ} \right) \right)\right)}[/tex]

Which gives;

[tex]m \widehat{MJ}[/tex] = 87°

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Final answer:

The measure of MJarc in circle C, when MLarc is 138°, is calculated to be 222°, based on the property that the sum of arcs in a circle is 360°.

Explanation:

The question revolves around the properties of a circle and its tangents. We have a circle C with two tangents KJ and KL, touching the circle at points J and L respectively. In addition, we are told that the measure of the arc ML (from M to L) is 138° and we need to find the measure of the arc MJ (from M to J).

According to the properties of circles, a tangent at any point on the circle is perpendicular to the radius at that point. Also, the measure of an angle formed by a tangent and a chord through the point of tangency is half the measure of the intercepted arc. In this scenario, MJ and ML are two arcs that form a complete circle, so the sum of mMJarc and mMLarc should equal 360°. If mMLarc is 138°, then mMJarc, the arc we are trying to find, would be 360° - 138°, which equals 222°.

Assume c and d function independently. for the system to function, either c or d must function.
a. if the probability that c fails is 0.08 and the probability that d fails is 0.12, find the probability that the system functions.
b. if both c and d have probability p of failing

Answers

For the "system" to function, we require that [tex]C\cup D[/tex] occurs (i.e. the event that either [tex]C[/tex] or [tex]D[/tex] function properly). This occurs with probability

[tex]\mathbb P(C\cup D)=\mathbb P(C)+\mathbb P(D)-\mathbb P(C\cap D)[/tex]

but since [tex]C[/tex] and [tex]D[/tex] are independent,

[tex]\mathbb P(C\cup D)=\mathbb P(C)+\mathbb P(D)-\mathbb P(C)\mathbb P(D)[/tex]

We're given that [tex]\mathbb P(C^C)=0.08[/tex] and [tex]\mathbb P(D^C)=0.12[/tex], so

[tex]\mathbb P(C\cup D)=(1-0.08)+(1-0.12)-(1-0.08)(1-0.12)=0.9904[/tex]

If [tex]\mathbb P(C^C)=\mathbb P(D^C)=p[/tex], then

[tex]\mathbb P(C\cup D)=(1-p)+(1-p)-(1-p)^2=1-p^2[/tex]
Final answer:

The probability that the system functions is 1. In part b, the probability that the system functions is 2 - 2p.

Explanation:

To find the probability that the system functions, we need to find the probability that either c or d functions. Since c and d function independently, we can use the addition rule of probability. The probability that c functions is 1 minus the probability that c fails, which is 0.08, so the probability that c functions is 1 - 0.08 = 0.92. Similarly, the probability that d functions is 1 - 0.12 = 0.88. Since either c or d must function, we can add the probabilities of c and d functioning: 0.92 + 0.88 = 1.80 (which exceeds 1 since it's not possible for both c and d to function simultaneously). Therefore, the probability that the system functions is 1.

In part b, if both c and d have a probability p of failing, then the probability that c functions is 1 - p, and the probability that d functions is also 1 - p. Again, using the addition rule of probability, the probability that the system functions is: (1 - p) + (1 - p) = 2 - 2p.

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Prove that 1/2 + 1/3 + ... + 1/n is not an integer

Answers

ddddddddddddddddddddddddddddddddddddddddddddddddddddddddd
Final answer:

The sequence 1/2 + 1/3 + ... + 1/n is not an integer because no fractions in this series can sum up to a whole number. This argument aligns with the behavior of the Harmonic series, of which this sequence is a subset.

Explanation:

The question asks to prove that the sum 1/2 + 1/3 + ... + 1/n is not an integer. To approach this, consider the Harmonic series, which is the sum of the reciprocals of the natural numbers: 1 + 1/2 + 1/3 + … + 1/n. This series diverges, but since it never reaches an integer beyond 1, it suggests that any sum of its subset also won't be an integer.

For a more formal proof, suppose the sum 1/2 + 1/3 + ... + 1/n is an integer. It means that some fraction in that series would have to be a whole number, as fractions add up to fractions unless there is a whole number. Since none of the terms 1/2, 1/3, etc., are whole numbers, this contradicts our assumption. Therefore, 1/2 + 1/3 + ... + 1/n is not an integer.

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what is C=24x+80 R=44x breakeven point

Answers

For this case we have the following equations:
 [tex] C = 24x + 80 R = 44x[/tex]
 The break even point occur when C = R:
 We have then:
 [tex] 24x + 80 = 44x [/tex]
 Clearing x we have:
 [tex] 44x - 24x = 80 20x = 80 x = 80/20 x = 4[/tex]
 Then, substituting in any of the equations we have:
 [tex] C = 24 (4) +80 C = 96 + 80 C = 176[/tex]
 The break even point is:
 (4, 176)
 Answer:
 
The break even point is:
 
(4, 176)

Answer:

resumably this is number of units sold. Explanation: At the break even point Cost equals Revenue: 24x+80=44x. ⇒80=20x. ⇒x=4.

Step-by-step explanation:

Shawna lives in Alaska and makes $66,500 a year. If the median annual income is $68,460 in Alaska and $50,233 in the United States as a whole, is Shawna likely to qualify for Chapter 7 bankruptcy?A. Yes, Shawna is likely to qualify, because her yearly income is below the median annual income of Alaska.B. No, Shawna is not likely to qualify, because her yearly income is above the median annual income of the United States as a whole.C. No, Shawna is not likely to qualify, because her yearly income is below the median annual income of Alaska.D. Yes, Shawna is likely to qualify, because her yearly income is above the median annual income of the United States as a whole.

Answers

Yes, Shawna is likely to qualify, because her yearly income is below the median annual income of Alaska

Answer:

Option A is correct.

Step-by-step explanation:

Given scenario is - Shawna lives in Alaska and makes $66,500 a year and the median annual income is $68,460 in Alaska.

So, Yes, Shawna is likely to qualify for chapter 7 bankruptcy because her yearly income is below the median annual income of Alaska.

A person qualifies for chapter 7 bankruptcy if his annual income is below the median annual income of his state. So, as per the definition, option A is true.

What is the factorization of the trinomial below?

3x2 + 36x + 81

A. (x + 2)(x + 27)
B. (x + 3)(x + 9)
C. 3(x + 3)(x + 9)
D. 3(x + 2)(x + 9)

Answers

3x²+36x+81
Simplify by 3:
x²+12x+27
(x+3)(x+9)

Factorization of the given trinomial [tex]3x^{2} +36x+81[/tex] is equals to [tex]3(x+ 3)(x + 9)[/tex].

What is trinomial?

" Trinomial is defined as the polynomial which contains three terms."

According to the question,

Given trinomial ,

[tex]3x^{2} +36x+81[/tex]

Factorize the given trinomial we get,

[tex]3x^{2} +36x+81\\\\=3x^{2} + 27x + 9x + 81\\\\=3x(x +9) + 9(x+ 9)\\\\= (3x +9) (x+ 9)\\\\= 3 (x+3)(x + 9)[/tex]

Hence, Option (C) is the correct answer.

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10 × 4 - 2 × (4² ÷ 4) ÷ 2 ÷ 1/2 + 9

Answers

47 should be your answer. 
41
____________________________________________

WORK :

Use PEMDAS

10 × 4 - 2 × (4² ÷ 4) ÷ 2 ÷ 1/2 + 9
10 x 4 - 2 x ( 4 ) ÷ 2 ÷ 1/2 + 9
40 - 8 ÷ 2 ÷ 0.5 + 9 
40 - 4 ÷ 0.5 + 9
40 - 8 + 9
32 + 9 = 41

convert negative 31 degrees Fahrenheit to Celsius.

Answers

Consider, pls, this option:
1. formula for conversion:
[tex]C= \frac{5}{9} (F-32);[/tex]
2. according to the formula:
C=(-31-32)*5/9=(-7)*5=-35°
Answer: -35°C.

A gardener wants to run a border around the outside of her garden. She plots it on a grid to plan how much she will need. The garden is in the shape of a rectangle with vertices at (3, 9) (5, 9) (3, 3) (5, 3). Find the total length of border needed. 8ft 12ft 16ft 24ft

Answers

1. To solve this exercise you must plot the vertices of the rectangle: (3,9);(5,9); (3,3); (5,3). The graph is shown in the figure attached.

 2. As you can see in the graph, the rectangle has 6 feet long  (L=6 feet) and 2 feet wide (W=2 feet).

 3. Then, the perimeter of the rectangle is:

 P=2L+2W

 4. When you substitute the values of "L" and "W" into P=2L+2W, you obtain:

 P=2(6 feet)+2(2 feet)
 P=12 feet+4 feet
 P=16 feet

 Therefore, the total length of border needed is 16 feet.

Final answer:

The perimeter of a rectangle with the vertices given by the student is found by adding twice the length and twice the width, resulting in a total border length needed of 16 feet.

Explanation:

The student is asking about calculating the perimeter of a rectangular garden using the coordinates of its vertices. To find the total length of border needed, we look at the coordinates (3, 9), (5, 9), (3, 3), and (5, 3) given for the rectangle. The distance between two points on the same vertical line, like (3, 9) and (3, 3), is the absolute difference of the y-coordinates, which is,

9 - 3 = 6 feet.

Similarly, the distance between two points on the same horizontal line, like (3, 9) and (5, 9), is the absolute difference of the x-coordinates, which is

5 - 3 = 2 feet.

Since a rectangle has two pairs of equal sides, the total perimeter is 2 times the length plus 2 times the width. Therefore, the total length of border needed is,

2 x 2 feet + 2 x 6 feet

= 4 feet + 12 feet

= 16 feet.

Give the slope of y – 4 = 5(x – 2) and a point on the line.

Answers

Answer:

The slope is, 5 and (2, 4) is the point on the line.

Step-by-step explanation:

Using the point intercept form:

[tex]y-y_1 =m(x-x_1)[/tex]             ......[1]

where,

m is the slope of the line and

[tex](x_1, y_1)[/tex] is the point on the line.

As per the statement:

The equation of line is given by:

[tex]y-4 =5(x-2)[/tex]

Comparing the given equation with [1]  we have;

⇒m = 5 and [tex](x_1, y_1) = (2, 4)[/tex]

Therefore, the slope is, 5 and (2, 4) is the point on the line.

Write two different two-step equations that have 1.2 as their solution.

Answers

We can write multiple equations that have the same solution.
 Two of these equations could be for example:
 Equation 1: 
 10x = 12 
 Equation 2: 
 2x-1 = 1.4
 Note: when clearing x in both equations we have:
 x = 1.2
 Answer: 
 10x = 12 
 2x-1 = 1.4

Javier bought 48 baseball cards at a hard sale. Of the cards, 3/8 were baseball cards. How many of the cards were baseball cards?

Answers

18 were baseball. 3/8 x 48 equals 18. 
48 ÷ 8 × 3 = 18

18 of the cards were baseball cards.

Hope this helps!

Marcus loves baseball and wants to create a home plate for his house. Marcus needs to calculate the area of the home plate at the ball field so he can reconstruct it when he gets home. Calculate the area of the polygon
A. 30 in²
B. 31.5 in²
C. 36.5 in²
D. 39 in²
PLEASE HELP ASAP. I WILL MARK AS BRAINLIEST!

Answers

The answer is d. 39.

Rectangle: 6*3 = 18

Big Triangle: (5*6)/2 = 15

Smaller Triangle: (4*3)/2 = 6

18+15+6=39.

Hope this helped☺☺

what is the value of log5 125

Answers

Definition of log:

[tex]log_bX=a <=>X=b^a[/tex]

This means that
[tex]log_5125=a <=>125=5^a[/tex]
but we know that 5^3=5*5*5=125
therefore
a=3, or
[tex]log_5125=3[/tex]

Find the length of a rectangular prism having a volume of 2830.5 cubic meters , width of 18.5 meters, and height of 9 meters.

Answers

The length is = 17m 

Answer:

l = 17 m
w = 18.5 m
h = 9 m
d = 26.688 m
S = 1268 m2
V = 2830.5 m3

How many solutions does this system have?

5x - y = 3
2y = 10x + 2

a.one
b.two
c.an infinite number
b.no solution

Answers

How many solutions does this system have?

5x - y = 3
2y = 10x + 2


c.an infinite number

the given system has D. no solution as slope are same.

What is equation?

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.

here, we have,

5x - y = 3

2y = 10x + 2

now, we know that,

A system of two equations can be classified as follows:

If the slopes are the same but the y-intercepts are different, the system has no solution.

If the slopes are different, the system has one solution.

If the slopes are the same and the y-intercepts are the same, the system has infinitely many solutions.

so, the given system has D. no solution as slope are same.

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555 grams of wool were needed to knit a sweater, a hat and a scarf. The hat required 5 times less wool than the sweater and 5 grams more than the scarf. How many grams of wool did each item require?

Answers

Final answer:

The problem is solved by setting up a system of equations. After solving, it was found that a sweater requires 375 grams of wool, a hat requires 75 grams, and a scarf requires 70 grams.

Explanation:

We are given that 555 grams of wool are needed to knit a sweater, a hat and a scarf. We are also told that the hat required 5 times less wool than the sweater, and 5 grams more than the scarf. To solve this problem, we can set up a system of equations to represent these relationships.

Let's define S as the number of grams of wool required for the sweater, H as the grams for the hat, and SC as the grams for the scarf.

From the problem, we have three equations:

S + H + SC = 555 (The total weight of the wool) H = S/5 (The hat required 5 times less wool than the sweater) H = SC + 5 (The hat required 5 grams more than the scarf)

By substituting H = S/5 and H = SC + 5 into the first equation, we can solve the system of equations to find the quantity of wool required for each item:

S = 375 grams, H = 75 grams, SC = 70 grams.

Therefore, a sweater requires 375 grams of wool, a hat requires 75 grams, and a scarf requires 70 grams.

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Final answer:

To solve this problem, we can set up equations based on the given information and represent the amount of wool needed for each item using variables. By solving these equations, we can find the amount of wool needed for each item.

Explanation:

Let's define the variables:

x = amount of wool needed for the sweater

hat = amount of wool needed for the hat

scarf = amount of wool needed for the scarf

We know that hat requires 5 times less wool than the sweater, so hat = (1/5)x.

We also know that the hat requires 5 grams more than the scarf, so hat = scarf + 5.

Considering that the total amount of wool needed for the three items is 555 grams, we have:

x + (1/5)x + (scarf + 5) = 5556x/5 + scarf + 5 = 5556x/5 + scarf = 550

Now we can simplify the equation and solve for x:

6x + 5(scarf) = 550 × 56x + 5scarf = 2750multiply the first equation by 5 to get 6x + 5scarf = 2750

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Please help me with questions 17, 18, 19

Answers

See the attached image for the answers

===========================================================
Problem 17

The fact that we have perpendicular diagonals means we either have a kite or a rhombus. We can't have a kite because the opposite sides are parallel. So that means the figure is a rhombus.

An alternative line of thinking is to break the figure into 4 triangles, and then prove each triangle to be congruent. This will show that all four sides are the same length (by CPCTC). So that's another way to see we have a rhombus.
===========================================================
Problem 18

A rectangle has congruent diagonals. Draw in the diagonals and then prove the triangles to be congruent using SAS. By CPCTC, the diagonals will be the same length. 
===========================================================
Problem 19

RP and VA are the first two letters of RPQ and VAQ respectively
RP/VA = 6/3 = 2/1

Similarly,
PQ/AQ = 8/4 = 2/1

The triangles are similar
The scale factor is 2:1

Find the m∠DEC, if m∠BAC = 50° and m∠CBA = 70°

Answers

the complete question in the attached figure
we know that
m∠BAC = 50°
m∠CBA = 70°
and
m∠BAC+m∠CBA+m∠ACB=180°
then 
m∠ACB=180-[m∠BAC+m∠CBA]---------> 180°-[50°+70°]=60°
m∠ACB=60°
remember that 
BC║DE
therefore
m∠ACB=m∠DEC
m∠DEC=60°

the answer is m∠DEC=60°

Answer:

the m∠DEC=60°

Step-by-step explanation:

As given, information the triangle is shown in figure-1

Given:

m∠BAC = 50°

m∠CBA = 70°

we need to find m∠DEC

Since, sum of interior angles of triangle is 180°.

In triangle ABC,

m∠BAC+m∠CBA+m∠ACB=180°

50° + 70° + m∠ACB =180°

120° + m∠ACB =180°

subtract 120° from both the sides in above,

m∠ACB =180° - 120°

m∠ACB =160°

from the figure, we can see that BC║DE,

therefore

m∠DEC=m∠ACB

m∠DEC=60°

Therefore, the m∠DEC=60°

Mike saves $42 a week for 7 weeks. During his 8-day vacation, he plans to spend $8.25 each day for snacks. Which expression shows how much money he will have left?

A) (42÷7)−(8⋅8.25)
B) (42⋅7)−(8⋅8.25)
C) (42⋅7)+(8⋅8.25)
D) 42⋅7⋅8⋅8.25

Answers

The answer is B, because you will have to multiple 42 by 7 to see how much money he will have in 7 weeks and then you will have to subtract 8 × 8.25 to see how much money he spent on his vacation.

Find the scalar and vector projections of b onto
a.a = i + j + k, b = i - j + k

Answers

Try this option.
1 is for scalar (result is number), 2 is for vector (result is vector).
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