please help me in my math please please Thanks​

Please Help Me In My Math Please Please Thanks

Answers

Answer 1

Answer:

Step-by-step explanation:

31) Multiply the entire equation by the LCM of 5 & 4 which is 20

[tex]20*\dfrac{2x^{2}}{5}+20*\dfrac{5x}{4}=10*20\\\\4*2x^{2}+5*5x = 200\\\\8x^{2}+25x - 200 = 0[/tex]

B

32) D

By trial & error method 17 * 15 = 255

33) x = 2

y = 4x² + 1

  = 4*2² + 1 = 4*4 + 1

  = 16 + 1

y = 17

B

34) D) all real numbers

35) Domain = all real numbers,

x = -2 ; y = -(-2+2)² - 7 = 0 - 7 = - 7

x = 0 ; y = -(0+2)² - 7 = -4 - 7 = -11

x = 4; y = -(4+2)² - 7 = - 6² -7 = -16 - 7 = - 23

C) y ≤ -7

36) t =  1 second

y = 160t - 40t² = 160*1 - 40*1² = 160 - 40

y = 120 m

C

37)  Let the number be 'x'

x² + x = 165

x² + 4x - 165 = 0

Sum = 4

Product = -165

Factors = 15 , -11      {15*(-11) = -165   & 15+ (-11) = 4}

x² + 15x - 11x - 165 = 0

x(x + 15) - 11(x + 15)=0

(x + 15)(x - 11) = 0

x + 15 = 0   ; x - 11 = 0

x = -15       ; x = 11

C

38) y = 3(x + 1)² - 2

Plugin x = -1   ; y = 3(-1 +1)² - 2 = 0 - 2

                        y = -2

(-1 , -2)

D

39) y = 3(x - 9)²  + 3

Plugin x = 9 ;   y = 3(9-9) + 3 = 0 + 3 = 3

B


Related Questions

Where are the correct answers to this geometry question?

Answers

1. Property

This is an example of the transitive property of equality.

2. Definition

This is the definition of a right angle.

3. Property

This is an exmaple of the division propety of equality.

4. Definition

This is the definition of a midpoint.

5. Property

This is an example of the symmetric property of equality.

Let me know if you have any questions, thanks!

Chất nào sau đây là muối dung hòa
CH

Answers

How is this a math question lol ?

Mario and 3 friends equally shared the burritos shown.



Problem

Read aloude How many burritos did each person get?

A

1 2
3

B

1 1
6

C

1 1
4

D

1 1
2

Answers

Answer:

c

Step-by-step explanation:

it would be c. because there are 4 friends and there and 5 burritos so each one gets 1 and the last one slips to 4 pieces.

Answer:

each one had 3 so C is the answer

The difference between twice one number and a lesser number is 32. The sum of the lesser number and twice the greater is 60. Find the numbers

Answers

Answer:

The numbers are 23 , 14

Step-by-step explanation:

Let the greater number = x

The smaller number  = y

2x  - y = 32    ------------(I)

2x + y = 60  ----------------(II)

Add the two equations. Thus y will be eliminated and we can find the value of x

(I)   2x - y = 32

(II)  2x + y = 60   {Now, add}

      4x      = 92

            x = 92/4

x = 23

Plugin x = 23 in equation (II)

2*23 + y = 60

  46  + y = 60

           y = 60 - 46

            y = 14

The numbers are 23 , 14

A. V(t)=0.87(22,000)^t
B. V(t)=1.13(22,000)^t
C. V(t)=22,000(0.87)^t
D. V(t)=22,000(1.13)^t

Answers

Answer:

C.

Step-by-step explanation:

A and B you can already eliminate because you need to power the rate not the starting value. D is wrong because it's increasing, so if the value increased by 0.13 each year it would be right. So you're left with C

2 root 5 x 5 root 5 simplified

Answers

Answer:

the answer is 10√5

Step-by-step explanation:

by simplifying

The value of 2√5 x 5√5 is 50.

What is Radical?

The √ symbol that is used to denote square root or nth roots. Radical Expression - A radical expression is an expression containing a square root.

An expression that uses a root, such as a square root, cube root is known as a radical notation.

Given:

2√5 x 5√5

So, Multiplying the roots

= 2√5 x 5√5

= ( 2x 5) ( √5 x √5)

= 10 x 5

= 50

hence, the multiplication of Radical gives 50.

Learn more about radical here:

https://brainly.com/question/1369233

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work out the size of angle A

Answers

use sin rule first to get angle C
11/sinC = 9/Sin38
cross multiplication
SinC = 11Sin38/9
ARCSinC (sin inverse) to find C
then angle A= 180 minus (angle C plus angle B)

i need to know the answer to simplify 5/6

Answers

Answer: It's already in it's simplest form.

Solve the formula S=4(pi)r^2 for r.

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The given formula is :

[tex]s = 4 \pi {r}^{2} [/tex]

let's solve for r

[tex]r {}^{2} = \dfrac{s}{4\pi} [/tex]

[tex]r = \sqrt{ \dfrac{s}{4\pi} } [/tex]

P'(-2,5) is the image of P after a dilation centered at the origin with a
scale factor of 1/3. What are the coordinates of P?

Answers

Answer:   (-6, 15)

Explanation:

When going from the preimage P to its image P', we multiply each coordinate by the scale factor 1/3.

To go in reverse (image to preimage), we multiply by the reciprocal of that scale factor. The reciprocal of 1/3 is 3/1 or simply 3.

Triple the coordinates of (-2, 5) to end up with (-6, 15)

We can check the answer by multiplying each coordinate of (-6, 15) by the original scale factor 1/3 and you should end up with (-2, 5) again.

i can't fgire this out 28,172 ft = mi ft

Answers

Answer: 5.3356061 miles

Step-by-step explanation:

If 1 foot = 0.000189394 miles

THEN

28,172 feet = 5.3356061 miles

Answer:  5.3356 miles approximately

Explanation:

Divide by 5280 to convert from feet to miles

28,172 ft = (28,172)/(5280) = 5.3356 miles approximately

James recently hired a plumber to do some necessary work. On the final bill, James was charged a total of $593. $365 was listed for parts and the rest for labor. If the hourly rate for labor was $76, how many hours of labor was needed to complete the job?

(A) First write an equation you can use to answer this question. Use x as your variable and express any percents in decimal form in the equation.

The equation is ______

(B) Solve your equation in part (A) to find the number of labor hours needed to do the job.

Answer: The number of labor hours was _____

Answers

Answer:

A. 593 = 365 + 76x

B. 3 hours

Step-by-step explanation:

593 = 365 + 76x

228 = 76x

3 = x

find the intersection of the two lines by solving the system of equations please help I will give brainliest

Answers

Answer:

(-3, -5)

Step-by-step explanation:

We can add the two equations together so the x's cancel out:

x + y = -8

-x + y = -2

2y = -10

y = -5

We can substitute y in to get x:

x - 5 = -8

x = -3

This means the intersection is (-3, -5).

what is the point given in y - 2 = 6(x+5)?

Answers

Answer:

-5,2

PLS MARK BRAINLIEST

Step-by-step explanation:

The points are (x1,y1)

using the formula

y-y1 = m(x-x1)

comparing these: - y = -2 ;y = 2

-x1 =5; x1 = -5

(-5,2) the points

m =6 (slope )

if i went to school at 9:14 and only have to be there for 4 hours what time do i get out

Answers

Answer:

1:14

Step-by-step explanation:

instead of starting from 9:14 you start counting from 10:14 because that where the first hour start

Please help! I will mark brainliest:)

Answers

A) y=1.75x+2

B) y(1)=3.75, y(2)=5.5, y(3)=7.25, y(4)=9

C) *See attached screenshot

D) Yes, it is linear since the slope doesn't change.

Estimate by rounding to the nearest hundreds : 7892 - 3425 =

Answers

Answer:

4500

Step-by-step explanation:

7892 to the nearest hundred is 7900

3425 to the nearest hundred is 3400

7900 - 3400

=4500

HELP!!! I RLY NEED HELP WITH THIS!

Answers

Answer:

the first one is no solution

the second one is one solution

the third one is many solutions

Step-by-step explanation:

9(x/3+1)>6.
A.x>-5
B.x>2
C.x>5/3
D.x>-1

Answers

Answer:

D.

Step-by-step explanation:

We are given

9(x/3 + 1) >= 6

Divide 9 on both sides

x/3 + 1 >= 2/3

Subtract 1 on both sides

x/3 >= -1/3

Multiply 3 on both sides

x >= -1

Evaluate using suitable identity:
h). 139² - 138²​

Answers

Step-by-step explanation:

★ Solution :-

[tex]\sf \longmapsto 139^2 - 138^2[/tex]

[tex]\sf \longmapsto a^2 - b^2 = (a + b)(a - b)[/tex]

Here,

a = 139b = 138

[tex]\sf \longmapsto 139^2 - 138^2 = (139 + 138)(139 - 138)[/tex]

[tex]\sf \longmapsto (239 + 138)(239 - 138)[/tex]

[tex]\sf \longmapsto (377)(1)[/tex]

[tex]\sf \longmapsto 377[/tex]

Hence solved !!

Answer:

277

Step-by-step explanation:

Algebraic Identity: a²-b²=(a-b)(a+b)

Hence,

139²-138²=(139-138)(139+138)

=1×277

=277

Akram is p years old. Shazwan is
7 years older than Akram. Their
total age is 31 years. Write a linear equation to represent their
total age.

Answers

answer

Ang sagot po 38 diyan

how do I solve this?

Answers

See below for solution. Hope this is helpful

Last year Jonathan was 60 3/4 inches tall. This year he is 65 1/4 inches tall. How many inches did he grow?

Answers

Answer:4 1 /2

Step-by-step explanation:

reflection of -2,4 1,2 -2,1 across x axis

Answers

Answer:

2,4   -1,2   2,1

Step-by-step explanation:

1. In this Vacation time, go through your neigh blurs and take a survey (not less than 20 peoples) about their favourite festival either Dashain ox Tihar and do the following
Sloution:

The total people's are DUT = 25
Number of peoples who bked Dashain no(D) = 10 Number of peoples who liked & Tihar no(t) = 9
1. how many like Dashain and tihar both=? ​

Answers

Answer:

1

Step-by-step explanation:

dgshdbahdbdbsbdbdbdbdbebdbdhdhd

hiii please help thanks

Answers

Answer:

BEC and AED

Step-by-step explanation:

Sam had 44 books. He placed them equally into 2 boxes. Then he placed
the amount from each box equally into
2 piles. How many books were in each pile?

2 books
4 books
5 books
11 books

Answers

Answer:

11 books

Step-by-step explanation:

44 books/2 boxes= 22 books per box

22 books per box/ 2= 11 books

Answer:

11 books

Step-by-step explanation:

44 ÷ 2

22 in each boxes

again

22 ÷ 2

11 books in each pile

The new dolphin tank at the city aquarium is in the shape of a rectangular prism. It is long by wide by deep. To make the tank livable for the dolphins, the aquarium workers treat the water using bags of salt. The amount of water a bag of salt can treat is known in cubic feet.
(a) Find the volume of water in the tank in cubic feet.

(b) To make the tank livable for the dolphins, a bag of salt must be added for each 19.4ft$ of water. The aquarium doesn't have any salt on hand and the salt can only be purchased in whole bags. How many bags of salt must be purchased to treat the water?
(c) If each bag of salt costs $4.85, how much must the aquarium pay for salt to treat all the water in the new dolphin tank?
answer quickly

Answers

The volume of water in the tank is 35,100 cubic feet.

What is the volume of the rectangular prism?

Volume = length × width × height

We have the following parameters based on the information provided;

Length = 20 meters

Width = 13 meters

Height = 5 meters

Substitute the values into the formula to get

Volume = 20 × 13 × 5

Volume = 1300 cubic meters

Convert the cubic yard into cubic feet

1 cubic yard = 27 cubic foot

⇒ 1300 yards = x

⇒ x = 27 × 1300

⇒ x = 35,100 cubic feet

Therefore, the amount of water a bag of salt can treat is 35,100 cubic feet

To learn more about the volume here:

brainly.com/question/28574486

#SPJ1

The question seems to be incomplete the correct question would be

The new dolphin tank at the city aquarium is in the shape of a rectangular prism. It is 20 yds long by 13 yds wide 5yds by deep. To make the tank livable for the dolphins, the aquarium workers treat the water using bags of salt. The amount of water a bag of salt can treat is known in cubic feet.

Find the volume of water in the tank in cubic feet.

Explain the following types of angles:
Acute angle
Right angle
Obtuse angle
Straight angle
Reflex angle
Complementary angles
Supplementary angles

Answers

Answer:

acute angle measure less than 90 degrees, right angle measure 90 degrees, Obtuse angle measure more than 90 degrees, straight angle equal to 180 degrees, reflex angle is an angle greater than 180° and less than 360°, complementary angle either of two angles whose sum is 90°, supplementary angle either of two angles whose sum is 180°

Ralph painted 1/6 of a wall in 2/3 hour. At this rate how many hours will it take Ralph to paint the whole wall?

Answers

Answer:

4 hours

Step-by-step explanation:

1/6 is one segment

6 segments make a whole

6/6 = 1

2/3 is equal to one segment

2/3 * 6 = 4

Answer:

It will take 4 hours.

Step-by-step explanation:

Let the size of  whole wall be x.

Given that

Ralph painted 1/6 of a wall in 2/3 hours

thus, writing it in mathematical form we have,

time taken to pain 1/6 of x = 2/3 hours

=time taken to pain x/6 wall = 2/3 hours

since, we have taken size as x so to find time to pain x size of wall ,

we divide both side by 6

=time taken to pain x/6 * 6 wall = 2/3 *6 hours

= time taken to paint x wall = 4 hours

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