why do math exist in school?​

Answers

Answer 1

Answer: I have no idea

Step-by-step explanation:


Related Questions

during a big storm, 29 inches of snow fell in 8 hours. find the rate

Answers

Answer:

36.25

Step-by-step explanation:

If you want to find the rate to anything, divide the measurements by the time.

29/8= 36.25

7,5 move 4 units left and 1 unit down

Answers

Answer:

(3,4)

Step-by-step explanation:

Answer:

4,3

Step-by-step explanation:

They are wrong, it's actually 19683 pennies.

Answers

Answer:

It is actaully 19683.0 lol

Step-by-step explanation:

Answer:

I thought it was 42069 i guess i was wrong

Step-by-step explanation:

plz help! which one is it

Answers

Answer:

3rd

Step-by-step explanation:

hope it helps :)

Please I BEG you to help...

Answers

Answer:

36x^8

Explanation:

Use the rules of exponents

Answer:

36x^8

Step-by-step explanation:

You distribute the exponent (2) to the the coefficient (6) and the other exponent (4). When you distribute 2 to 6 you are squaring the 6.

6^2 = 6•6 = 36

Because of the power rule, you just multiply both the exponents together.

4•2 = 8

so when you put it together it looks like this: 36x^8

Find the distance between the two points (-1,0) (-8.4)

Answers

Answer:

d = 8.062258

Step-by-step explanation:

=(−8−(−1))2+(4−0)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√

=(−7)2+(4)2‾‾‾‾‾‾‾‾‾‾‾‾√

=49+16‾‾‾‾‾‾‾√

=6‾√5

=8.062258

Line J M is the perpendicular bisector of LK.

Line J M intersects line L K at point N and forms a right angle.
Which segments are congruent?

JN and LN
JN and NM
LN and NK
NK and NM

Answers

Answer:

The congruent segments are LN and NK ⇒ C

Step-by-step explanation:

If a line is a perpendicular bisector of another line, that means this line intersects the other line in its midpoint and form right angles around this point

∵ Line JM is the perpendicular bisector of line LK

→ That means JM intersect LK at the midpoint of LK

∵ Line JM intersects line LK at point N

∴ Point N is the midpoint of LK

N divides LK into two segments LN and NK

N is the midpoint of LK

→ That means LN equals NK

LN = NK

The congruent segments are LN and NK

Answer:

it C on edge

Step-by-step explanation:

will mark BRAINLIEST!!!
helpppppp

Answers

Answer:

I think its $2.50x+4.00

PLEASE HELP!! how do I prove that vertical angles are congruent???

Answers

Answer:

a b

Step-by-step explanation:

ASAP! PLEASE HELP! ILL GIVE BRAINLY! This is really needed now

Answers

Answer:

∠ABD = 48

Step-by-step explanation:

use symbolab

(x+15)=(4x-12)

x+15-15=4x-12-15

x=4x-27

x-4x=4x-27-4x

-3x=-27

divide both sides by 3 and you get x=9

then put 9 in to replace x

((9) + 15) + (4 (9) - 12)

=24 + (4 (9) - 12)

= 24 + 24

=48

ur welcome

Which rate describes a unit price. $1.00 for 2 lemons. $3.00 for every pound. $4.00 for 3 slices of pizza. $6.00 for every 6 bottles.

Answers

Answer:

I believe it would be $3 per pound.

Let me know if I'm incorrect!

Answer:

It is C

Step-by-step explanation:

i can verify because i took the test and got 100

Mr. Drew grows green pepper plants in planters.

The graph shows the relationship between the number of planters and the number of pepper plants. How many pepper plants are in 3 planters?

A graph shows green pepper plants by planters. A line starts at (0, 0) and passes through (4, 12).

18

12

9

3

Answers

Answer:

Option (3)

Step-by-step explanation:

From the graph attached,

For a point (x, y),

x-coordinate shows the planters and y-coordinate show the number of green pepper plants in the planters.

If input value (x-value) for the line is 3,

Output value (y-value) from the graph will be, y = 9.

Therefore, there are 9 green pepper plants in 3 planters.

Therefore, Option (3) is the correct option.

Classify angle H in the figure as right, straight, acute, or obtuse. For right angles and straight angles, indicate the
number of degrees in each angle,
Choose the correct classification for angle H
A. Acute
B.Obtuse
C.Straight
D. Right

Answers

It C sry for the mistake

Angle H is a right angle
A right angle means you can draw a square
Square= right angle= 90 degrees

Find the height a 17-foot ladder can reach on the side of a building when it
hits the ground at a 65° angle.
A. 7.2 ft
B. 15.4 ft
C. 36.5 ft
D. 48 ft
E 224 ft

SHOW EXPLANATION

Answers

Answer:

B. 15.4 ft

Step-by-step explanation:

this answer, without any formulas used, can be answered correctly and logically.

answer c, d and e are eliminated as the opposite side cant be greater than the hypotenuse.

now we have to find which is correct between a and b

the answer will be 'B' as the value of sine of an angle keeps increasing as the angle itself increases. thus, giving a bigger value of the opposite side (required height). as 15.4 ft.

mathematically,

sin65° = x/17

17 × sin65° = x

where x is height of the side of the building.

Probability a bag of miniature candy’s contain 15 crunch bars 14 Hershey’s chocolate bars 10 Mr.Goodbars 12 Hershey’s cookies and cream bars. What is the probability of randomly choosing each of them ?

Answers

15:51 for Crunch bars

14:51 for Hershey's

10:51 for Mr. Goodbars

12:51 for Cookies and Cream

There are 51 candies in total. We got that by adding all of the candies together. 15 + 14 + 10 + 12 = 51. The probability can be written as a ratio between the different types of candy and the whole number.

The probability of crunch bars, Hershey’s chocolate bars, Mr.Goodbars, and Hershey’s cookies and cream bars are 15/51, 14/51, 10/51, and 12/51, respectively.

What is Probability?

Probability helps us to know the chances of an event occurring.

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]

The probability can be written as,

P(Crunch bars) = Number of Crunch bars/ Total number of choclates= 15/51

P(Hershey's Chocolate) = 14/51

P(Mr. Goodbars) = 10/51

P(Hershey’s cookies and cream bars) = 12/51

Hence, the probability of crunch bars, Hershey’s chocolate bars, Mr.Goodbars, and Hershey’s cookies and cream bars are 15/51, 14/51, 10/51, and 12/51, respectively.

Learn more about Probability:

https://brainly.com/question/795909

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b)
1 + sin^4A ÷cos^4A = 1 + 2tan^2A.sec^2A

Answers

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

tan²x + 1 = sec²x

Consider the left side

[tex]\frac{1+sin^4A}{cos^4A}[/tex]

= [tex]\frac{1}{cos^4A}[/tex] + [tex]\frac{sin^4A}{cos^4A}[/tex]

= [tex]sec^{4}[/tex] A + [tex]tan^{4}[/tex] A

= (tan²A + 1)² + [tex]tan^{4}[/tex] A

= [tex]tan^{4}[/tex] A + 2tan²A + 1 + [tex]tan^{4}[/tex] A

= 1 + 2tan²A + 2[tex]tan^{4}[/tex] A ← factor out 2tan²A

= 1 + 2tan²A(1 + tan²A)

= 1 + 2tan²A sec²A

= right side , thus verified

please help with this question

Answers

Answer:

(1/3)x+ x-20+ x-10+40= 360

Step-by-step explanation:

(1/3)x+ x-20+ x-10+40= 360

x+3x-60+3x-30+120=360*3

7x+30= 1080

7x= 1050

x= 150

The sum of the angles = 360.

Add the 4 angles together so they equal 360:

1/3x + x-20 + x-10 + 40 = 360

Combine like terms:

2 1/3x - 30 + 40 = 360

Continue combining like terms:

2 1/3x +10 = 360

Subtract 10 from both sides:

2 1/3x = 350

Divide both sides by 2 1/3:

x = 150

Find the slope and the y intercept for the equation below 2x+y=7

Answers

Answer:

Slope: -2

Y intercept: (0,7)

Step-by-step explanation:

try to help at least

Answers

When it says positive slope the line is going up.When it says negative slope the line goes down.For the y intercept it means like where on the Y-line it is if it’s on the top half of the X line then it’s positive, and below is negative

Answer:

Graph 1: Lang

Graph 2: Sharayah

Graph 3: Caleb

Graph 4: Tierra

Step-by-step explanation:

Graph 1 y-intercept: 2

Graph 2 y-intercept: -2

Graph 3 y-intercept: -3

Graph 4 y-intercept: 3

Graph 1: Positive

Graph 2: Negative

Graph 3: Positive

Graph 4: Negative

What is the next term of the geometric sequence? 20, -10 ,5,?

Answers

Answer:

-2.5

Step-by-step explanation:

The common ratio of the sequence is -0.5, because as the sequence progresses, the new number is obtained by multiplying the previous one by -0.5

So, to find the next term, multiply 5 by -0.5

5(-0.5)

= -2.5

So, the next term is -2.5

The ratio of pencils to pens is 3 to 5. There are 21 pencils in the classroom. How
many total pens and pencils are in the classroom?

Answers

Answer:

56 pencils and pens

Step-by-step explanation:

3:5 is the ratio, and then put that into a fraction and then make a proportion

3/5=21/x

eCross multiply and divide so do 21*5 divided by 3. This gives us an answer of 35. Now we know we have 35 pens. 35+21, adding the pen and pencil, is 56. You can always also look for relationships, so if you could see that multiplying 7 gives you the answer, than do that to the 5, and then add it together.

An equation for a line that is perpendicular to the line given by y=-2 and passes through the point (5,6)

Answers

Answer:

y - 6 = 1/2 (x - 5)

Step-by-step explanation:

Point slope equation:  y-y₁ = m(x-x₁)

replace

x₁ = 5,

y₁ = 6,

m = 1/2 (perpendicular means opposite reciprocal)

So what is a dilation and how will it effect the image and the preimage(i have 8th grade math).

Answers

Answer:

In geometry, a transformation is an operation that moves, flips, or changes a shape to create a new shape. A dilation is a type of transformation that enlarges or reduces a figure (called the preimage) to create a new figure (called the image).

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

A team of runners is needed to run a 1/3-mile relay race. If each runner must run 1/9 mile, how many runners will be needed?

Answers

Answer:

3 Runners

Step-by-step explanation:

A rectangle has a height of 3c^43c
4
3, c, start superscript, 4, end superscript and a width of c^2-4c+3c
2
−4c+3c, squared, minus, 4, c, plus, 3.

Answers

Answer:

Step-by-step explanation:

The area of rectangle is 3[tex]c^{6}[/tex]-12[tex]c^{5}[/tex] + 9[tex]c^{4}[/tex].

What is area of rectangle?

The area of any rectangle is calculated, once its length and width are known. By multiplying length and breadth, the rectangle's area will obtain in a square-unit dimension.

Area of a Rectangle. A = l × b.

Given:

height = 3[tex]c^{4}[/tex]

width = c² - 4c +3

So, Area of rectangle

=length *  width

= 3[tex]c^{4}[/tex] * (c² - 4c +3)

=3[tex]c^{6}[/tex]-12[tex]c^{5}[/tex] + 9[tex]c^{4}[/tex]

Hence, the area of rectangle is 3[tex]c^{6}[/tex]-12[tex]c^{5}[/tex] + 9[tex]c^{4}[/tex].

Learn more about area of rectangle here:

https://brainly.com/question/20693059

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Your question is incomplete, probably the complete question/missing part is:

A rectangle has a height of 3[tex]c^{4}[/tex] and a width of c² - 4c +3. Express the area of the entire rectangle.

18 percent of 68 is what

Answers

18 percent of 68 is a decimal, 12.24. Hope this helps.

Stacey jogs every third day and swims every fourth day. If she jogs and swims on Monday, what is the next day of the week she will end up jogging and swimming.

Answers

Answer:

Saturday

Step-by-step explanation:

First we have to find the LCM of 3 and 4

It is 12, so we know that she will jog and swim every 12 days

This time was Monday, so 12 days after Monday will be the day she both jog and swims.

12 days after Monday is Saturday, so the next time she jogs and swims is Saturday.

Hope this helped

Sorry if it's wrong

:)

Jo is going on an 8-day activity holiday. Each day she can choose one of the water sports: kayaking or sailing, or land-based sports. She never does different water sports on consecutive days. She also wants to try all three options on at least one day of her holiday. How many different schedules are possible?

Answers

Answer:

6 ways

Step-by-step explanation:

Given

Number of Sports: 3

Required

Determine the total number of schedules

Since, there are 3 sports and the schedule is in no particular order.

The number of schedules is calculated as thus:

[tex]Number = n!\ ways[/tex]

Where:

[tex]n = 3[/tex]

So, we have:

[tex]Number = 3 * 2 * 1\ ways[/tex]

[tex]Number = 6\ ways[/tex]

Answer:

882

Step-by-step explanation:

Used excel sheet. drag numbers 0 to 65535. next row, create the base3 number of first column, select all 8 digit numbers, will be 6561. eliminate numbers with no 1 or 2 or 3. eliminate numbers with 23, 32, keeping 1 as kand, 2 as kayaking, 3 as surfing..result will be 882

HELP BRAINLEST IF ANSWER PLZ Click LINK TO SEE QUESTION!!!!
https://brainly.com/question/18621006

Answers

Answer:

1. theres no link attached

2. lol just write it here wyd

3. uhm ur not tricking me-

Step-by-step explanation:

What is the next number in the sequence: -2, 4, -8, 16, -32, , ...

Answers

Answer:

64

Step-by-step explanation:

This is an Geometric sequence

Common ratio = 2nd term ÷ 1st term = 4 ÷ (-2) = -2

To get the next term multiply the previous term by (-2)

The next term (6th term) = -32 * (-2) =  64

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