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4 years ago

8

You randomly select one card from a 52-card deck. find the probability of selecting the sevenseven of heartshearts or the tente

n of diamondsdiamonds.

1 answer:

8_murik_8 [283]4 years ago

5 0

Dimon dimon dimon

dimo n

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Pls pls pla help it lol

docker41 [41]

66x is the correct answer

5 0

2 years ago

What is the answer??

Dovator [93]

Answer:

y₂ = 3

Step-by-step explanation:

Calculate the slope m using the slope formula and equate to - $\frac{3}{4}$

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (7, - 6) and (x₂, y₂ ) = (- 5, y₂ )

m = $\frac{y_{2}+6 }{-5-7}$ , that is

$\frac{y_{2}+6 }{-12}$ = - $\frac{3}{4}$ ( cross- multiply )

4(y₂ + 6) = 36 ( divide both sides by 4 )

y₂ + 6 = 9 ( subtract 6 from both sides )

y₂ = 3

8 0

3 years ago

Algebra connections 5-101

Elan Coil [88]

Could you please add the image.

8 0

3 years ago

Consider the following pair of equations:

frozen [14]

X+4=y=-2x-2
x+4=-2x-2
add 2x to both side
3x+4=-2
minus 4 both sides
3x=-6
divide 3
x=-2

sub back
y=x+4
y=-2+4
y=2

(x,y)
(-2,2)

3 0

3 years ago

Write down the quadratic equation whose roots are $x = -7$ and $x = 1,$ and the coefficient of $x^2$ is 1. Enter your answer in

pav-90 [236]

<h2>Steps:</h2>

So firstly, since we know that the coefficient of x² is 1, this means that this is our base equation:

y = x² + bx + c

Now, since we know that the roots are -7 and 1, set y = 0 and set x = -7 and 1 and simplify:

$0=(-7)^2+b(-7)+c\\0=49-7b+c\\-49=-7b+c\\\\0=1^2+b(1)+c\\0=1+b+c\\-1=b+c\\\\-49=-7b+c\\-1=b+c$

Now with this, we can set up a system of equations to solve for b and c. For this, I will be using the elimination method. For this, subtract the 2 equations:

$\begin{alignedat}{2}-49&=-7b+c\\-(-1&=b+c)\\-48&=-8b\end{alignedat}$

Now that the c variable has been eliminated we can solve for b. For this, divide both sides by -8 and your first part of your answer is b = 6.

Now that we know the value of b, plug it into either equation to solve for c:

$-49=-7(6)+c\\-49=-42+c\\-7=c\\\\-1=6+c\\-7=c$

<h2>Answer:</h2>

<u>Putting it together, your final answer is x² + 6x - 7 = 0.</u>

4 0

3 years ago