*99 POINTS*The science club sponsor is ordering caps and shirts for the boys and girls in the science club.There are 45 science club members.If the caps come in packages of 3 amd the shirts come in packages of 5,what is the least number of packages of caps and shirts that will need to be ordered

Answers

Answer 1

for every member to get a shirt you would need to order 9 packages of shirt (because 5 times 9 is 45) and for caps the minimum to order would be 15 packages of caps

explanation

caps=3 per package

shirts=5 per package

divide 45 by and get 15

15 is the total packages of hats needed to order

for shirt 45 divided by 5 is 9

9 is the total packages of shirts needed to order

Answer 2

Answer:

15 pack of caps n 9 pack of shirts

Step-by-step explanation:

There are 45 science club members.

If the caps come in packages of 3, least no. of package of caps is 45/3=15

If the shirts come in packages of 5, least no. of package of caps is 45/5=9



Related Questions

Let x = a + bi and y = c + di and z = f + gi Which statements are true? Check all of the boxes that apply. x + y = y + x (x × y) × z = x × (y × z) x – y = y – x (x + y) + z = x + (y + z) (x – y) – z = x – (y – z)

Answers

The usual rules of addition and multiplication apply to complex numbers as well as to real numbers. The true statements are ...

x + y = y + x  . . . . . . . . . . . . . . . commutative property of addition(x × y) × z = x × (y × z) . . . . . . . . associative property of multiplication(x + y) + z = x + (y + z) . . . . . . . . associative property of addition

The true statements after evaluating the expression based on principle of commutativity and associativity are :

x + y = y + x(x × y) × z = x × (y × z)(x + y) + z = x + (y + z)

x = a + bi

y = c + di

z = f + gi

Recall :

Commutative property establishes that, if the ordering of the numbers an addition or multiplication expression, is changed, the result is unchanged : a + b = b + a

The Associative property maintains that, the grouping of values in a multiplication operation does not affe t the result of the product. : a × ( b × c) = b × (a × c) = c × (b × a)

Evaluating the options :

x + y = y + x ; This is true (Commutative property of addition) (x × y) × z = x × (y × z) (True according to the Associative property) x - y = y - x (False) (x + y) + z = x + (y + z) (True ; Commutative property) (x – y) – z = x – (y – z) (False)

Hence, only 3 of the given statements are true, according to the Commutative or Associative rule.

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expand the expression 4(3/2x+5)

Answers

You can just do this:
4(3/2x) + 4 (5)

Hope it helped a bit.
4*(3/2x)=6x
4*5=20
6x+20 is the expression

write a two column proof

given 4y = 2x - 10 y=6

prove x=17
 please help me with this

Answers

[tex]4y=2x-10[/tex] and [tex]y=6[/tex]

use the second expression to calculate the left-hand side of the first equation:

[tex]4\cdot 6 = 2x -10\\24 = 2x -10[/tex]

Add 10 to both sides if this equation to get

[tex]34 = 2x[/tex]

and divide both sides by 2

[tex]17 = x[/tex]

this proves that x = 17, give the two initial equations

Which expression is equivalent to the expression 2/3(3 - 1/3)(-1)?
(i'm doing a giveaway worth 25 points if you get the right.)

Answers

2/3 (5/3)(-1) = -10/9


Answer:

-7/9

Step-by-step explanation:

2/3(3 - 1/3)(-1) = (1-2/9)(-1) = -1+2/9 = -7/9

what is the length of the missing side

Answers

Answer:

The answers are:

m = 9   and     n = 15

Step-by-step explanation:

m/15 = n/25 = 12/20

  m/15 = 12/20

  m/15 = 3/5

  5m = 45

  m = 9


  n/25 = 12/20

  n/25 = 3/5

  5n = 75

  n = 15



m = 9 and n = 15

Find the length( l ) of the leg in the large right triangle using Pythagoras' identity

l = √(25² - 20²) = √225 = 15

the outer and inner right triangles are similar hence the ratios of corresponding sides are equal

[tex]\frac{25}{n}[/tex] = [tex]\frac{15}{m}[/tex] = [tex]\frac{20}{12}[/tex]

using [tex]\frac{25}{n}[/tex] = [tex]\frac{20}{12}[/tex] (cross-multiply )

20n = 300 ( divide both sides by 20 )

n = 15

using [tex]\frac{15}{m}[/tex] = [tex]\frac{20}{12}[/tex] ( cross-multiply )

20m = 180 ( divide both sides by 20 )

m = 9



The tables show the high and low temperatures in Chicago over a 15-day period. Which set of data has the greatest RANGE?

Answers

I would say the low I’m just guessing so get it checked


Answer:

the answer is C

Step-by-step explanation:

The low temperatures have the greater range. The range for the highs is 6, the range for the lows is 8.

g(x) = 2x − 1 h(x) = 1 − g(x) The functions g and h are defined above. What is the value of h(0)?

Answers

Answer:

h(0) is equal to 2.

Step-by-step explanation:

In order to find this, we first put 0 in for x in the g(x) equation.

g(x) = 2x - 1

g(0) = 2(0) - 1

g(0) = -1

Now that we have this, we can stick the answer for g(x) into the f(x) equation.

f(x) = 1 - g(x)

f(x) = 1 - -1

f(x) = 1 + 1

f(x) = 2

The value of [tex]h(0)[/tex] is 2.

It is given that,

[tex]g(x)=2x-1[/tex][tex]h(x)=1-g(x)[/tex]

Explanation:

We have,

[tex]h(x)=1-g(x)[/tex]

[tex]h(x)=1-(2x-1)[/tex]

[tex]h(x)=1-2x+1[/tex]

[tex]h(x)=2-2x[/tex]

Substitute [tex]x=0[/tex] in the above function.

[tex]h(0)=2-2(0)[/tex]

[tex]h(0)=2-0[/tex]

[tex]h(0)=2[/tex]

Thus, the value of [tex]h(0)[/tex] is 2.

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Write an equation of the line passing through each of the following pairs of points. d (5, 0), (−3, 0)

Answers

the answer to the question

A line is drawn so that is passes through the points (-4,0) and (2,3) what is the slope of the line


-1/2

1/2

-2

2

Answers

you would use the form y2-y1/x2-x1 so in this case it would be 3-0/2+4 which would be 3/6 but simplify your answer and you get would be 1/2 so your answer is 1/2

slope = [tex]\frac{1}{2}[/tex]

to calculate the slope m use the gradient formula

m = ( y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 4, 0 ) and (x₂, y₂ ) = (2, 3)

m = [tex]\frac{3-0}{2+4}[/tex] = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex]


What is the remainder of (x 3 + 5x 2 − 32x − 7) ÷ (x +3)

Answers

here is your answer....

a.) Describe a transformation sequence that will transform quadrilateral ABCD into quadrilateral A’B’C’D’.



b.) There is more than one way to transform quadrilateral ABCD into quadrilateral A’B’C’D’. Describe a second sequence of transformations that will accomplish this goal. Explain what tool you used as an aid in identifying a transformation sequence.

Answers

a.) The orientation of ABCD is clockwise, as is the orientation of A'B'C'D'. This means the transformation involves a even number of reflections (may be 0). The orientation of AB is North, and the orientation of A'B' is West, so a rotation of 90° CCW (or equivalent) is involved. We can find the point of intersection of the perpendicular bisectors of AA' and BB' (at (-1, -1)) to determine a suitable center of rotation.

ABCD can be transformed to A'B'C'D' by ...

rotation 90° CCW about the point (-1, -1)

b.) Rotation by 90° can also be accomplished by reflection across a diagonal line. Since we want the orientation to remain unchanged, we need another reflection to put the figure into its final position. A suitable alternate sequence for mapping ABCD to A'B'C'D' is ...

reflection across the line y=xreflection across the line x=-1

A movie theater charges $5 per ticket and averages 300 customers each night. If prices are raised to $7 per ticket, the theater estimates that average nightly ticket sales will be $1,750. What is the percentage change in the average number of customers the theater has each night? (Express your answer in whole numbers; round decimals up or down).

Answers

Attendance with the higher ticket price is ...

... $1750/$7 = 250

So the percentage change in attendance is ...

... change = (new - original)/original × 100%

... = (250 -300)/300 × 100% = -1/6×100% ≈ -17%

Final answer:

The percentage change in the average number of customers after the movie theater raises ticket prices is approximately -17%.

Explanation:

The movie theater originally charges $5 per ticket and has an average of 300 customers each night. After raising the price to $7, the average nightly ticket sales amount to $1,750. To find the new number of customers, divide the total sales by the price per ticket: $1,750 / $7 = 250 customers.

The change in the number of customers is the new amount minus the original amount, which is 250 - 300 = -50. To find the percentage change, divide the change by the original amount and multiply by 100: (-50 / 300) x 100 = -16.67%. After rounding the decimal, the percentage change is approximately -17%.

Luna's monthly mortgage payment was $2100 last year, and on average, 9% of each payment was interest. If Luna itemizes deductions on her federal income tax return, how much can she deduct for mortgage interest?

Answers

Answer:

$2268

Step-by-step explanation:

Luna's total mortgage payments for the year would be

... (monthly payment)×(number of months in a year)

... = $2100×12 = $25,200

Of that, 9% went to interest, so the interest amount is ...

... $25,200×9% = $2268

_____

About percentages

Your calculator may do percentages directly. If not, it can be helpful to realize that the percent symbol (%) means the same thing as /100 (divided by 100). So, 9% = 9/100 = 0.09

Answer:

$2268

Step-by-step explanation:

did it on apXX

PLZ HELP ASAP! ILL MARK BRAINLEST!

Factor completely 12x4 + 6x3 + 18x2.

Prime
3(4x4 + 2x3 + 6x2)
3x2(4x2 + 2x + 6)
3x(4x3 + 2x2 + 6x)


Factor completely 7x3y +14x2y3 − 7x2y2.

7x2(xy + 2y3 – y2)
7x2y(x + 2y2 – y)
7(x3y +2x2y3 − x2y2)
Prime


What is the Greatest Common Factor of x6 and x3?

x4
x3
x2
x

Answers

Question 1.) Factor completely [tex]12x^{4}+ 6x^{3}+18x^{2}[/tex]

Since [tex]6[/tex] divides all the three terms of the equation, so we take [tex]6[/tex] common out from the equation.

i.e., [tex]6(2x^{4}+ 1x^{3}+3x^{2})[/tex]

Now, since [tex]x^{2}[/tex] divides all the three terms of the equation, so we take [tex]x^{2}[/tex] common out from the equation.

i.e., [tex]6x^{2}(2x^{2}+ 1x+3)[/tex]

Now, this cannot be factored further as [tex]2x^{2}+ 1x+3[/tex] is a quadratic equation and taking out discriminant of it is:

[tex]D = (1)^2 - 4(2)(3)\\  \ \   = 1- 24\\ \ \ = -23<0[/tex]

Since, the discriminant is less than zero. Therefore, the factored form of the given equation :  [tex]12x^{4}+ 6x^{3}+18x^{2}[/tex]  is : [tex]6x^{2}(2x^{2}+ 1x+3)[/tex]


Question 2.) [tex]7x^{3}y+ 14x^{2} y^{3} - 7x^{2}y^{2}[/tex]

Since [tex]7[/tex] divides all the three terms of the equation, so we take [tex]7[/tex] common out from the equation.

i.e., [tex]7(x^{3}y+ 2x^{2} y^{3} - x^{2}y^{2})[/tex]

Now, since [tex]x^{2}y[/tex] divides all the three terms of the equation, so we take [tex]x^{2}y[/tex] common out from the equation.

i.e., [tex]7x^{2}y(x+ 2y^{2} - y)[/tex]

Therefore, the factored form of the given equation :  [tex]7x^{3}y+ 14x^{2} y^{3} - 7x^{2}y^{2}[/tex]  is : [tex]7x^{2}y(x+ 2y^{2} - y)[/tex]


Question 3.) What is the Greatest Common Factor of [tex]x^{6}[/tex] and [tex]x^{3}[/tex] ?

The Greatest Common Factor of two numbers is the biggest number which divides both the given numbers completely.

Now, for the expressions [tex]x^{6}[/tex] and [tex]x^{3}[/tex]:

Since, [tex]x^{3}[/tex] divides both the expressions completely and it is the biggest expression which divides both the expressions.

Therefore, [tex]x^{3}[/tex] is the Greatest Common Factor of [tex]x^{6}[/tex] and [tex]x^{3}[/tex]



Answer:

#2 is definatly B

Step-by-step explanation:

What is the measure of ∠ A in this quadrilateral?

Answers

Answer:

30°

Step-by-step explanation:

The sum of the angles of a quadrilateral is 360°. You have 3 angles given, so can find the fourth using that fact. (The double arcs on angles B and C mean those angles are congruent. Same symbols are used to mark same-size angles.)

... 360° = A + B + C + D

... 360° = A + 115° + 115° + 100°

... 360° -330° = A = 30°

M is the midpoint of segment AB. A has the coordinates (-5,4) and M is at the origin. Find the coordinates of B

Answers

Using geometry:

Since M is the origin, point B is the mirror image of point A with respect to the origin. From the origin to point A, you go 5 units left and 4 units up. For the mirror image, start at the origin, and go 5 units right and 4 units down.

Answer: B(5, -4)

Using the midpoint formula:

[tex] x_m = \dfrac{x_1 + x_2}{2}~~~and~~~y_m = \dfrac{y_1 + y_2}{2} [/tex]

[tex] 0 = \dfrac{-5 + x_2}{2}~~~and~~~0 = \dfrac{4 + x_2}{2} [/tex]

[tex] 0 = -5 + x_2~~~and~~~0 = 4 + x_2 [/tex]

[tex] -x_2 = -5~~~and~~~-4 = x_2 [/tex]

[tex] x_2 = 5~~~and~~~x_2 = -4 [/tex]

Answer: B(5, -4)

As you can see, both methods give you the same answer.

I need help with finding X's value.

Please help it's geometry.


See attachment

Answers

The marks on the line segments tell you they are the same length, and that the triangle is an equilateral triangle. That tells you the angles are the same size, and all are 60°. This lets you find x and y.

(7x+4)° = 60°

7x = 56 . . . . . . . . divide by °, subtract 4

x = 8 . . . . . . . . . . divide by 7

_____

(8y+12)° = 60°

8y = 48 . . . . . . . . divide by °, subtract 12

y = 6 . . . . . . . . . . divide by 8

What is the solution of sqrt2x+4=15

Answers

Answer:

x = 126

Step-by-step explanation:

Square both sides of the equation. (sqrt2x+4)^2 = 16^2

2x+4 = 256

Then you should solve for x. (First Subtract 4 from both sides; Then simplify; Next divide both sides by 2; Finally, simplify once more)

This should give you your answer. (x = 126)

Hope this helps! ^-^

Answer:

x = 72

Step-by-step explanation:

sqrt {2x} +4 = 16

sqrt {2x} = 12

2x = 12 ^ 2

x = 144/2

x = 72

If you wanted to write:

sqrt {2x + 4} = 16

2x + 4 = 16 ^ 2

2x + 4 = 256

2x = 252

x = 252/2

x = 126

Jessica is making gift baskets.each basket has 1 jarof salsa and 1 bag of tortilla chips.she buys the salsa in cases of 6 jars.she buy the tortilla chips in cases of 4 bags what is the least numbers of baskets Jessica can make

Answers

You are looking for the least common multiple, or the smallest number that is divisible by both given quantities. For this problem, we can accomplish this by listing out the multiples of each number

[tex]4 \: 8 \: 12 \: 16... \\ 6 \: 12 \: 18...[/tex]
here we can see that 12 is the smallest common multiple, and is the smallest number of baskets Jessica can put together without waste.
Final answer:

The least number of gift baskets Jessica can make, given that she has 6 jars of salsa and 4 bags of tortilla chips in each case, is 12. This is calculated by finding the Least Common Multiple of 6 and 4.

Explanation:

Jessica is working with two different quantities: 6 jars of salsa in a case and 4 bags of tortilla chips in a case. In each gift basket, she places 1 jar of salsa and 1 bag of tortilla chips, meaning that she needs the same number of jars and bags for an even number of gift baskets.

Therefore, to find the least number of baskets she can make, we need to find the Least Common Multiple (LCM) of 6 and 4, which the smallest number that both numbers divide evenly into. The LCM of 6 and 4 is 12. Hence, the least number of gift baskets Jessica can make is 12.

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if quadrilateral RESP is is reflected across the line y = 2x +7 and again across the line y = -12x + 5, what will be the resulting image?
A. The resulting image will be a translation of the pre-image
B. The resulting image will be a rotation of the pre-image
C. The resulting image will be a reflection of the pre-image
D. The resulting image cannot be determined

Answers

The first reflection reverses the orientation and alters the direction of the vectors representing the sides of the quadrilateral. The second reflection does the same thing. The end result is that the orientation is unchanged by two reflections, and the direction of the sides of the quadrilateral is changed.

The appropriate choice is ...

... B. The resulting image will be a rotation of the pre-image.

_____

The center of rotation will be the point where the lines cross. (That is the invariant point.)

In the attachment, the green quadrilateral RESP is reflected across the line y=2x+7 (blue) to form the blue quadrilateral R'E'S'P'. That is then reflected across the line y = -12x +5 (orange) to give the orange quadrilateral R"E"S"P", which is a rotation of the pre-image.

The amount of rotation is double the angle between the lines, about 62.7°.

Find the missing number of each unit rate 24/4=?/1 and 40/5=?/1

Answers

24/4 = 6/1

40/5 = 8/1

The answer is 6/1 and 8/1.


Best of luck.

The missing number unit rate of 24/4=?/1 is 6 and 40/5=?/1 is 8.

We have to determine

The missing number of each unit rate is 24/4=?/1 and 40/5=?/1.

According to the question

Let the missing number be x.

The missing number is determined by cross multiply and then solving for the value of x.

The missing number is,

[tex]\rm \dfrac{24}{4} = \dfrac{x}{1}\\\\24 \times 1 = x \times 4\\\\24 = 4x\\\\x = \dfrac{24}{4}\\\\x = 6[/tex]

And another missing number is,

[tex]\rm \dfrac{40}{5} = \dfrac{x}{1}\\\\40 \times 1 = 5 \times x\\\\40 = 5x\\\\x = \dfrac{40}{5}\\\\x = 8[/tex]

Hence, the missing number unit rate of 24/4=?/1 is 6, and 40/5=?/1 is 8.

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One of the angles formed by two intersecting lines is 30°. What is the measure of the other three angles? please help i need this asap 20 POINTS

Answers

Answer: the angles are if the 30° is in the first quadrant:

30°, 150°, 30°, 150° (from quadrant one to quadrant four)

Step-by-step explanation:

If two lines intersect, and one of the angles that form is 30°, we have that:

Now, suppose that you have only a line, this is the representation of a 180° angle, then if you divide it with a line and one of the angles created is 30°, the other angle must be equal to 150°

and on the other side of the line we will have a mirrored image, right next to the 150° we should see another 30° angle, and after that another 150° angle.

Which relation is a function?

Answers

the diagram on the top left hand side is a function

For each value of x on the domain (x- axis ) there can only be one corresponding value of y in the range (y- axis)

Apart from the diagram on the top left side, the other 3 all fail this definition


baseball field.....................

Answers

Umm. What is the question?

The design and layout of a Baseball Field Design to the game experience by affecting play flow and ensuring visibility, vital for both players and fans. Elements like the diamond infield and the extensive outfield reflect American sports culture, which emphasizes strategy and skill, and has historically fostered community engagement and identity.

The design and layout of a baseball field significantly impact the experience of the game by determining the flow of play and the visibility of actions, which is crucial for player performance and fan engagement.

Specific elements, such as the diamond shape of the infield and the expansive outfield, align with the American sports culture, which values a balance between strategy and physical skill, offering a variety of play styles from power hitting to meticulous base running.

The historical evolution of professional baseball teams and their ballparks reflects a facet of American identity through sports, as communal spaces like Fenway Park and Forbes Field facilitated a collective civic pride and a space for social interaction among diverse groups including immigrants.

Moreover, participation in sports, even at the informal level of pickup games, represents an integral part of cultural dynamics in American society, aligning with the practice of community building and local support within the cultural geography framework.

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The probable question may be:

How does the design and layout of a baseball field contribute to the overall experience of the game, and what specific elements align with the principles of American sports culture as taught in the curriculum?

Write the equation of a line that is perpendicular to x = 3 and that passes through the point ( 0 , − 4 )

Answers

We have to write the equation of a line that is perpendicular to the line [tex]x=3[/tex] and that passes through the point [tex](0,-4)[/tex].

The general equation of a line in the slope-intercept form is given by:

[tex]y=mx+b[/tex]

Where, 'm' is the slope and 'b' is the y-intercept.

Now, we need to find the slope first,

The required line is perpendicular to the line [tex]x=3[/tex]. Slope of the line [tex]x=3[/tex] is undefined. A line perpendicular to that must have slope of '0'. That implies, our required line is parallel to the x-axis.

Therefore, m=0

Now that line is passing through the point [tex](0, -4)[/tex].

We can plug in the points to the find the value of y-intercept. After plugging the values, we get:

[tex]y=0 \times 0+(-4)=-4[/tex]

Hence, the equation of the required line is [tex]y=-4[/tex].

a store sells rope by the meter The equation p=0.8L represents the price p (in dollars) of a piece of nylon rope that is L meters long. a. How much does the nylon rope cost per meter. b. How long is a piece of nylon rope that costs $1.00

Answers

Answer:

(a) $0.80

(b) 1.25 m

Step-by-step explanation:

(a) Put 1 where L is, and evaluate the equation.

... p = 0.8·1 = 0.8

The cost for 1 meter of rope is $0.80.

(b) Put 1 where p is and solve for L.

... 1 = 0.8L

... 1/0.8 = L = 1.25

The length of rope that costs $1 is 1.25 meters.

Answer:

a. $ 0.8

b. 1.25 meters.

Step-by-step explanation:

Given equation that represents the price p (in dollars) of a piece of nylon rope having length L meters,

[tex]p=0.8L[/tex]

a. If L = 1 meter,

The cost of the rope would be,

[tex]p=0.8(1) = \$ 0.8[/tex]

b. if p = $ 1.00,

[tex]\implies 1 = 0.8L[/tex]

[tex]\implies L=\frac{1}{0.8}=1.25[/tex]

Thus, the length of the rope would be 1.25 meters.

The cost of making 15 handbags is 1,615. The cost of making 27 handbags is 2,635. What is the cost per handbag ?

Answers

category A

price per handbag is 1615/15 = 101

category B

price per handbag is 2635/27=97.59

hope u understand...

A piece of copper weighed 4⁄5 of a kilogram and a piece of nickel weighed 3⁄5 of a kilogram. How much more did the piece of copper weigh?

Answers

You find the difference in weight by subtacting the weight of the nickel from the weight of the copper.

... (4/5 kg) - (3/5 kg) = (4 -3)/5 kg = 1/5 kg

The piece of copper weighed 1/5 kg more than the piece of nickel.

What is the value of cosA ?

Answers

Answer:

cos(A) = 24/25 = 0.96

Step-by-step explanation:

SOH CAH TOA tells you that ...

... cos(A) = AB/AC

We are given AB = 24, but we must calculate AC using the Pythagorean theorem.

... AC² = AB² + BC²

... AC² = 24² + 7² = 576 + 49 = 625

... AC = √625 = 25

Now, we have sufficient information to find cos(A):

... cos(A) = 24/25 = 0.96

Final answer:

The value of cosA is used in trigonometry and physics to calculate the horizontal component of vectors or the angle of right triangles. For example, if we have a vector A, at an angle θ, then Ax = A cos θ, where Ax is the horizontal component of the vector. So in this way, cosA provides a crucial part in vector calculations.

Explanation:

The value of cosA refers to the cosine of angle A. In trigonometry, this is often used in the context of right triangles or in the calculation of vectors. For example, if you have a vector A and an angle θ (theta), the horizontal component of that vector can be found by multiplying the magnitude of the vector (Ax) by cos(θ). This is often denoted as Ax = A cos θ.

To use an example, let's say we have a vector A with a magnitude of 10.3 blocks and an angle of 29.1° from the x-axis. We can find the x-component (Ax) of that vector by calculating (10.3 blocks) * cos(29.1°), which gives us a value of approximately 9.0 blocks.

Therefore, the value of cosA in this context would be used to provide a component part of a vector based on an associated angle.

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In ∆ABC, the altitudes from vertex B and C intersect at point M, so that BM = CM. Prove that ∆ABC is isosceles.

Answers

Answer:

Given: ∆ABC with the altitudes from vertex B  and C intersect at point M, so that BM = CM.

To prove:∆ABC is isosceles

Proof:-Let the altitudes from vertex B intersects AB at D and from C intersects AC at E( with reference to the figure)

Consider ΔBMC where BM=MC

Then ∠CBM=∠MCB......(1)(Angles opposite to equal sides of a triangle are equal)

Now Consider ΔDMB and ΔCME

∠D=∠E.......(each 90°)

BM=MC...............(given)

∠CME=∠BMD........(vertically opposite angles)

So by ASA congruency criteria

ΔDMB ≅ ΔCME

∴∠DBM=∠MCE........(2)(corresponding parts of a congruent triangle are equal)

Adding (1) and (2),we get

∠DBM+∠CBM=∠MCB+∠MCE

⇒∠DBC=∠BCE

⇒∠B=∠C⇒AB=AC(sides opposite to equal angles of a triangle are equal)⇒∆ABC is an isosceles triangle .

Answer:

m∠MBC = m∠MCB

 by reason: Base Angles

Step-by-step explanation:

:)

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