Which is the translation of the expression below?

Answers

Answer 1
Answer: In English, the translation of those symbols is ...

Zero multiplied or divided by anything is zero.

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Write a number sentence that tells what the model represents

Answers

Well it depends on what the model is but if it's an IRA or whatever so if you make your own model that's easy

If x=2y+3 and 4x-5y=9, what is the value of y?

Answers

The value of y for the given expression will be -1.

What is an expression?

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

Solve the system by substitution.

x = 2y + 3

4x-5y = 9

Substituting the value of x in equation no. 2, we have,

4(2y+3) - 5y = 9

8y + 12 - 5y = 9

3y + 12 = 9

3y = 9-12 = -3

The value of y is calculated as,

3y = -3

y = -3/3 = -1

y = -1

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We solve the system by substitution.

x = 2y + 3
4x-5y = 9

Substituting the value of x in equation no. 2 , we have,

4(2y+3) - 5y = 9

8y + 12 - 5y = 9

3y + 12 = 9

3y = 9-12 = -3

thus, 3y = -3

thus, y = -3/3 = -1

thus, y = -1

tamara and her mother plan to put a stone path and their garden each stone is 2/3 foot long they plan to use 7 stones that will be touching how long is the path write an equation to solve a problem explain your reasoning

Answers

its 4.50 because if you divide it will be 4 and 2 then with the 2 over 4 it is 4.5
Ok, so each stone is 2/3 ft long and there are 7 of them.  If we let path = P, then...

P = 2/3 x 7
P = 2/3 x 7/1
P = 14/3
P = 4 2/3 ft

So the path will be 4 2/3 ft long.

X^2 + 20x + 28 = 9 find the graphing/vertex form

Answers

Answer: (x+10)^2+119=0

Step-by-step explanation:

For a quadratic equation, the vertex form is given by : y=a(x-h)^2+k, where (h, k) is the vertex.

The given quadratic equation: x^2 + 20x + 28 = 9

Subtract 9 from both sides

=x^2+20x+19=0

compare this to x^2+bx=c, and add ((b)/(2))^2 both sides

b= 20

x^2+20+100+19=-100   [(b/2)²=20/2=10]

\Rightarrow\ x^2+2(x)(10)+10^2+119=0

\Rightarrow\ (x+10)^2+119=0\ \ \ [\because\ (a+b)^2=a^2+b^2+2ab]

So, the vertex form : (x+10)^2+119=0

Suppose that your mom gives you $20 to go to the school supplies store. there is a 6% sales tax on supplies. you need to buy the following items:Pencils = $1.29
notebook binder = $5.99
paper = $3.49
high-lighter pens = $2.35

a. How much will the supplies cost?
b. how much change will you receive?

Answers

The answers are -
a - $13.90
b - $6.10

I actually don’t get this and I have a test in 2 days please help what is g(x) and how

Answers

first off, is noteworthy that's the graph of an exponential function, thus the function will be along the lines of g(x) = abˣ , now, what's "a" and "b" values?

well, let's take a peek when x = 0 and x = 1.

\bf g(x) = ab^x \n\n[-0.35em] ~\dotfill\n\n \begin{cases} x = 0\n y = 1 \end{cases}\implies 1=ab^0\implies 1=a(1)\implies \boxed{1=a} \n\n[-0.35em] ~\dotfill\n\n \begin{cases} x = 1\n y = 4 \end{cases}\implies 4 = ab^1\implies 4=1b^1\implies \boxed{4=b} \n\n[-0.35em] ~\dotfill\n\n ~\hfill g(x) = 4^x\qquad \qquad \qquad \begin{array}{|c|c|ll} \cline{1-2} x&y\n \cline{1-2} -2&(1)/(4^2)\to (1)/(16)\n -1&(1)/(4)\n 0&1\n 1&4\n 2&16\n \cline{1-2} \end{array}~\hfill