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3 years ago

15

Plz help I don’t get this

1 answer:

Dahasolnce [82]3 years ago

6 0

The first and third one are correct

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2+46×8÷2= can someone find the answer

Dafna1 [17]

Answer:

186

Step-by-step explanation:

PEMDAS

First do 46 x 8 = 368 then divide that by 2, which would be, 184. Then add 2 to 184 and you get 186. :)

6 0

3 years ago

pashok25 [27]

Answer:

Step-by-step explanation:

(1) $f(x) = (x-1)^{2} - 36$

First, let's expand the expression:

$f(x) = x^{2} -2x + 1 - 36$

$f(x) = x^{2} - 2x - 35$

Next, let's factor the quadratic:

$f(x) = (x - 7)(x + 5)$

Finally, set the equation equal to $0$ to find the solutions

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

$x = -5, 7$

(2) During the step $(x - 5)^{2} = 36$ , when you take the square root of both sides, you have two equations, rather than one:

$x - 5 = 6$ and $x - 5 = -6$ , so the solutions should be $x = -1, 11$

(3)

$\frac{1}{4}(x + 5)^{2} - 1 = 3$

Add $1$ to both sides

$\frac{1}{4}(x + 5)^{2} = 4$

Multiply both sides by $4$

$(x + 5)^{2} = 16$

Take the square root of both sides

$x + 5 =$ ± $4$

Subtract $5$ from both sides

$x = -9, -1$

3 0

3 years ago

I need help and I will mark brainliest!

WITCHER [35]

Step-by-step explanation:

$8 {x}^{8} + 28 {x}^{6} + 18 {x}^{4} \\ \\ = 2 {x}^{4} (4 {x}^{4} + 14 {x}^{2} + 9) \\ \\ \therefore \: Ax^B = 2 {x}^{4} \\ \\ \implies \: A = 2 \: \: \: \: \\\\\& \: \: \: \: \: \: \: \:B = 4$

3 0

4 years ago

True or False?<br> An iron nail has the same density as an iron ax head.

galina1969 [7]

Answer:

This is in the wrong category

Step-by-step explanation:

I think that the answer is true, but i wouldnt know cause this is in the wrong category

7 0

3 years ago

Read 2 more answers

6. Find the slope of AB, given A (3,-1) and B (-1/3, 2) *

Elena-2011 [213]

Answer: $-\frac{9}{10}$

Step-by-step explanation:

Just plug these points into the slope formula $\frac{y_{2}-y_{1} }{x_{2}-x_{1}}$

A: (3,-1) = $(x_{1}, y_{1})$

B: (-1/3, 2) = $(x_{2}, y_{2})$

Now solve.

$\frac{2- (-1)}{-\frac{1}{3} - 3 }$

Simplify the numerator by changing the negative and minus to positive: $2 +1$

This simplifies now to 3.

The denominator needs to be simplified by finding a common denominator.

$-\frac{1}{3} -\frac{3}{1}$

The 3/1 needs to be multiplied by 3 on the top and bottom to get. $-\frac{1}{3} - \frac{9}{3}$

Now with a common denominator we can subtract: $-\frac{10}{3}$

Now we can put our simplified denominator and numerator back together.

$\frac{3}{-\frac{10}{3} }$

Now KCF, keep change flip.

$\frac{3}{1} *- \frac{3}{10}$

Now multiply across.

$-\frac{9}{10}$

This is the final answer as it cannot be simplified any further.

3 0

4 years ago