Which ones? Only if you know pls!!!!!

Answer:

7 years

Step-by-step explanation:

Given that:

Let Richard's age = x

Elder sister's age = 2x

Youngwr sister's age = x - 2

Product of sisters ages = 70

2x * (x - 2) = 70

2x² - 4x = 70

2x² - 4x - 70 = 0

x² - 2x - 35 = 0

x² - 7x + 5x - 35 = 0

x(x - 7) +5(x - 7) = 0

(x - 7) or (x + 5) = 0

x = 7 or x = - 5

X can't be negative

Hence, x = 7

Richard is 7 years

Answer:

x = 28

Step-by-step explanation:

give brainliest please

Answer:

C Subtraction property of equality

Step-by-step explanation:

You are subtracting 21 from both sides in step 3

Answer:

I would guess C

Step-by-step explanation:

I hope I'm correct, good luck.

Answer:

$16.00

Step-by-step explanation:

6 wood chairs are 444 which is 74.00 a piece

8 metal chairs are 720 which is 90.00 a piece

90-74= 16

The metal chairs are $16.00 more

If Abigail is buying new chairs to upgrade her restaurant. A set of 6 wooden chairs costs $444. A set of 8 metal chairs costs $720. Then the metal chairs are $16.00 more

Two or more expressions with an Equal sign is called as Equation.

Given,

Abigail is buying new chairs to upgrade her restaurant.

A set of 6 wooden chairs costs $444.

6W=444

W=444/6

W=74

A set of 8 metal chairs costs $720.

8M=720

M=720/8

M=90

Now we need to find how much more do the metal chairs cost per chair.

We need to find the difference

90-74

16

Hence the metal chairs are $16.00 more

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Answer:

it will be 6/5

............

Answer:

5/6

Step-by-step explanation:

-5/6 + 5/6 = 0

The additive inverse of a number makes the equations value 0.

Brainliest is much appreciated!

Answer:

65

Step-by-step explanation:

If you need explanation please tell me.

Answer:

B. y=(5x)/(1 + 2x^2)

Step-by-step explanation:

A. y = (5x)/(x * x^2)

Vertical Asymptotes: x = 0

B. y = (5x)/(1 + 2x^2)

Vertical Asymptotes: None

C. y = (5x - 1)/x

Vertical Asymptotes: x = 0

D. y = x/(1 - x^2)

Vertical Asymptotes: x = -1, 1

Answer:

112

Step-by-step explanation:

Answer:

1+2=___ is the decipher i think

Step-by-step explanation:

the morse code abc's-

A .- B -... C -.-. D -.. E . F ..-. G --. H .... I .. J .--- K -.- L .-.. M -- N -. O --- P .--. Q --.- R .-. S ... T - U ..- V ...- W .-- X -..- Y -.-- Z --..

Answer:

no

Step-by-step explanation:

because 2 of the sides would be the same length or almost the same number

Answer:

Not a right triangle

Step-by-step explanation:

I think the question is asking if this a right triangle?

In order to be a right triangle, the side lengths will need to follow Pythagorean theorem which says the two side legs of the triangle squared is equal to the hypothenuse squared or

[tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex]; we can use the length given such as 11mm, 14mm and 19mm (assume is the hypothenuse)

[tex]11^{2}[/tex] + [tex]14^{2}[/tex] =? [tex]19^{2}[/tex]

121 +  196 =? 361

317 ≠ 361; therefore it is not a right triangle

Answer:

The sample mean for survey 1 is $1.69.

Step-by-step explanation:

I just did this on edmentum plato.

Answer:

x = 15 ; y = 53

Step-by-step explanation:

(7x + 18)° + (4x - 3)° = 180°

11x + 15 = 180

11x = 165

x = 15

(2y + 17)° + (4(15) - 3)° = 180°

2y + 17 + 57 = 180

2y = 106

y = 53

Answer:

between -6 and -4 (-5), because -A is opposite from A

Answer:

3(a+2b)=11b

3a+6b=11b

3a=5b

a/b=5/3

a:b=5:3

Answer:

a:b = 5:3

Step-by-step explanation:

I do RSM too, just type in 5:3! Good luck and have a wonderful day.

Answer:

Evaluating the function is just replacing the "x" (or the "t" in the second case) by the value that we want:

1) q(x) = 1/(x^2 - 9)

 a) q(0) = 1/(0^2 - 9) = 1/(-9) = - 1/9

 b) q(3) = 1/(3^2 - 9) = 1/(9 - 9) = 1/0 = indetermined, we could think this as:

  [tex]\lim_{x \to \ 3} q(x) = infinity[/tex]

 c) q(y + 3) = 1/( (y + 3)^2 - 9) = 1/(y^2 + 6*y + 9 - 9) = 1/(y^2 + 6*y)

2) q(t) = (2*t^2 + 3)/t^2

 a) q(2) =  (2*2^2 + 3)/2^2 = (2*4 + 3)/4 = 11/4

 b) q(0) = (2*0^2 + 3)/0^2 = 3/0

  Again, we can not divide by zero, this is simmilar to the case 1.b

 c) q(-x) = (2*(-x)^2 + 3)/(-x)^2 = (2*x^2 + 3)/x^2

Answer:

-11(-12)=132

Step-by-step explanation:

First divide 132 by negative 11 and get -12.

Then you connect -12 into the equation by using paraenthisies so its not a mess.

Last check your answer. -11 times -12 is equal to positive 132.

The value of 't' for the given expression will be -12.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given expression is -11t = 132. The value of t will be calculated as below;-

-11t = 132.

Divide the number -132 by -11 to get the value of t.

-11t = 132.

t = -132 / -11

t = -12

Therefore, the value of 't' for the given expression will be -12.

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Answer:

no pic or nothing but here is a number 324

Step-by-step explanation:

Answer:

2805 (including the 105)

Step-by-step explanation:

75 x 12 (months in a year) = 900

So then you multiply 900 x 3 (amount of years) = 2700

then you add the 105 + 2700 = 2805

9514 1404 393

Answer:

  see below

Step-by-step explanation:

Each piece of the graph is a horizontal line extending the length of the domain for that piece. The ≤ symbol means the corresponding line end will have a filled dot. The < symbol means the corresponding line end will have an open dot.

Answer:

usstatizdnnetfilesd95/75690717474315a12d328c49bbc6aae3png

Step-by-step explanation:

Go check my graph out! Remember to add https!

Answer:

x = 11, ∠ B = 80°

Step-by-step explanation:

∠ A and ∠ B are corresponding angles and are congruent, thus

8x - 8 = 5x + 25 ( subtract 5x from both sides )

3x - 8 = 25 ( add 8 to both sides )

3x = 33 ( divide both sides by 3 )

x = 11

Thus

∠ B = 5x + 25 = 5(11) + 25 = 55 + 25 = 80°

Answer: $4,000

Step-by-step explanation:

If you have $1,000 dollars, and take ad ten percent ($100) interest you would get $1,100. But If you take away 30 percent ($300) away from 1,100 dollars you would get $800 dollars. The over all balance on the account after five years is, $4,000.

Hope this answer helps! :)

Answer:

the first one

Step-by-step explanation

you add 13 zeros, right?

Answer:

alr go to a therapist please

Step-by-step explanation:

Answer:

the addition property of equality

Step-by-step explanation:E

The addition property of equality property is used to justify Carmen's first step. Then the correct option is C.

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.

The linear equation is given below.

3x - 1 = - 1

Add 1 on both sides, then we have

3x - 1 + 1 = - 1 + 1

3x = 0

The addition property of equality property is used to justify Carmen's first step. Then the correct option is C.

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Answer:

one temp that ice freezes or could exist would be 32°F and at -34°C

Step-by-step explanation:

Answer:

28 for both of them

Step-by-step explanation:

1 is 28cm and 2 is 28cm

Step-by-step explanation:

since you know 2 of the sides you know the length of half of it since they are squares so if you att the 2 sides you know then multiply it by 2 you get the perimeter of that shape

Answer:

It is -11.3

Step-by-step explanation: Hope this help :)

Answer:

11.3or 1.1

Step-by-step explanation:

Answer:

It's not 2pi/3 so my next guess would be pi/3 but im not sure

Step-by-step explanation:

Answer:

The answer is B. pi/2

Answer:A

Step-by-step explanation:

Answer:

D ) 25t + 10

Step-by-step explanation:

Re-order terms so constants are on the left:

(5t+2) 5

5 (5t +2)

Distribute:

5 (5t +2)

25t +10

Answer:

25t +10