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3 years ago

Best explained and correct answer gets brainliest!!

Mathematics

2 answers:

alina1380 [7]3 years ago

6 0

Answer:

So our line is: y = 6x + 7

Step-by-step explanation:

Now, we need to find which equation of a line that has a y-intercept of 7 and is parallel to the line: y = 6x -5

So, if that equation is is parallel to the line: y = 6x -5 , so it has a standard from

y = 6x + m

(Because, if 2 lines are parallel with each other, they will have the same slope)

And it has a y-intercept of 7 when x = 0, so we have:

y = 6x+ m

<=> 7 = 6*0+m

<=> m = 7

So our line is: y = 6x + 7

We choose A

Hope it will find you well.

velikii [3]3 years ago

5 0

The equation is
(y-7)/x=6
y-7=6x
y=6x+7

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Which equation does the graph represent (see picture)

egoroff_w [7]

Y=Mx +b

B is 0 because that’s where the graph intercepts the y axis.

M is found by picking any two points and finding the rise and run because m is equal rise/run

Points of choice: (-2,4) and (2,-4)

=2−1/2−1 = -8/4

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3 years ago

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elena55 [62]

Answer:

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3 years ago

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Use number properties to simplify the following expression. -5 + (5 + 3)

bija089 [108]

Number Properties: PEMDAS

Parentheses, Exponents, Multiplication, Division, Addition, & Subtraction

$- 5 + (5 + 3)$

1. Parentheses
$- 5 + (7) \\$
There Are No Exponents, Multiplication, Division, Or Addition

2. Subtraction
$2$

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3 years ago

if the equation x^2 +(k+2)x+2k=0 has equal roots,then the value of k is .....a.2 b.-2 c 1/2 d.none

blsea [12.9K]

Answer:

k=2

Problem:

if the equation x^2 +(k+2)x+2k=0 has equal roots,then the value of k is ..

Step-by-step explanation:

Since the coefficient of x^2 is 1, we can use this identity to aid us: x^2+bx+(b/2)^2=(x+b/2)^2.

So we want the following:

[(k+2)/2]^2=2k

Apply the power on the left:

(k+2)^2/4=2k

Multiply both sides by 4:

(k+2)^2=8k

Expand left side:

k^2+4k+4=8k *I used identity (x+c)^2=x^2+2xc+c^2

Subtract 8k on both sides:

k^2-4k+4=0

Factor using the identity mentioned a couple lines above:

(k-2)^2=0

Since zero squared is zero, we want k-2=0.

Adding both sides by 2 gives k=2.

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3 years ago

An exam consists of 10 true-or-false questions. If a student guesses at every answer, what is the probability that he or she wil

zysi [14]

This can be solved by using the binomial distribution. The probability of guessing correctly is 0.5, and the probability of making a wrong guess is also 0.5.
$P(6\ correct)=10C6\times(\frac{1}{2})^{6}\times(\frac{1}{2})^{4}=\frac{210}{1024}=0.205$

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3 years ago