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levacccp [35]
2 years ago
10

Help and dont guess or ill report

Mathematics
2 answers:
sammy [17]2 years ago
7 0

Answer:

its -8

Step-by-step explanation:

have a good day :)

dedylja [7]2 years ago
6 0

Answer:

y = -8

Step-by-step explanation:

Use reverse operations to isolate the variable, y.

\frac{y}{-4} = 2

-4(\frac{y}{-4}) = 2(-4)

y = -8

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NO LINKS!! Use the method of substitution to solve the system. (If there's no solution, enter no solution). Part 11z​
Roman55 [17]

Answer:

(x,y)=\left(\; \boxed{-1,-8} \; \right)\quad \textsf{(smaller $x$-value)}

(x,y)=\left(\; \boxed{5,16} \; \right)\quad \textsf{(larger $x$-value)}

Step-by-step explanation:

Given system of equations:

\begin{cases}y=x^2-9\\y=4x-4\end{cases}

To solve by the method of substitution, substitute the first equation into the second equation and rearrange so that the equation equals zero:

\begin{aligned}x^2-9&=4x-4\\x^2-4x-9&=-4\\x^2-4x-5&=0\end{aligned}

Factor the quadratic:

\begin{aligned}x^2-4x-5&=0\\x^2-5x+x-5&=0\\x(x-5)+1(x-5)&=0\\(x+1)(x-5)&=0\end{aligned}

Apply the <u>zero-product property</u> and solve for x:

\implies x+1=0 \implies x=-1

\implies x-5=0 \implies x=5

Substitute the found values of x into the <u>second equation</u> and solve for y:

\begin{aligned}x=-1 \implies y&=4(-1)-4\\y&=-4-4\\y&=-8\end{aligned}

\begin{aligned}x=5 \implies y&=4(5)-4\\y&=20-4\\y&=16\end{aligned}

Therefore, the solutions are:

(x,y)=\left(\; \boxed{-1,-8} \; \right)\quad \textsf{(smaller $x$-value)}

(x,y)=\left(\; \boxed{5,16} \; \right)\quad \textsf{(larger $x$-value)}

6 0
1 year ago
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Likurg_2 [28]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
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BartSMP [9]
Answer – Always
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</span>
4 0
3 years ago
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Franky's age is 5 years less that 1/2 his mothers age. If Franky is 13 years old,write an equation to determine his mothers age
Alik [6]

Answer:

1/2x-5=13

Step-by-step explanation:

Let x= Frankie’s mother’s age

Half his mother’s age= 1/2x

5 less than that=1/2x-5

We know that Frankie is 13 so that equation is equal to Frankie’s age, which is 13.

Hope this helps.

4 0
3 years ago
Every person has blood type O, A, B, or AB. A random group of people are blood-typed, and the results are shown in the table.
vova2212 [387]

The probability that a randomly chosen person from this group has type B is <u>3/25</u>

The probability that a randomly chosen person from this group has type AB is <u>1/25</u>

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8 0
3 years ago
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