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3 years ago

Can someone explain and tell me the answer? WILL MARK BRAINLEST!

Mathematics

1 answer:

Finger [1]3 years ago

6 0

it’s day time for you? for me it’s 3:39 am!!!!! very oddd

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Write the equation of the line:<br> SLOPE - 1<br> Y-INTERCEPT - -2

Ierofanga [76]

Answer:

y = 1x - 2

Step-by-step explanation:

thank me later

3 0

3 years ago

2x^2+7x=15 write in standard then factor the left side of the equation.

Nataly [62]

Answer:

see explanation

Step-by-step explanation:

Given

2x² + 7x = 15 ( subtract 15 from both sides )

2x² + 7x - 15 = 0 ← in standard form

To factorise the left side

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 2 × - 15 = - 30 and sum = + 7

The factors are + 10 and - 3

Use these factors to split the x- term

2x² + 10x - 3x - 15 ( factor the first/second and third/fourth terms )

2x(x + 5) - 3(x + 5) ← factor out (x + 5) from each term

(x + 5)(2x - 3) ← in factored form

5 0

2 years ago

(HELP ME I CANT) Find the length of sides of ∆OTP if O is the centre of the circle ,PT is the length of

Ostrovityanka [42]

Hey there mate :)

Please check the attached image for answer.

5 0

1 year ago

What is the length of this line? choose 1 answer 9 8 square root of 45 square root of 27

dedylja [7]

Step-by-step explanation:

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6 0

2 years ago

Read 2 more answers

Cedric completed the square for the quadratic expression 5x^2−40x+15 in order to determine the minimum value of the expression,

Olegator [25]

Answer:

Step 3 is not correct (should be $(x-4)^2$ , not $(x+4)^2$

Step-by-step explanation:

The expression that we have to simplify is:

$5x^2-40x+15$

We proceed step-by-step, in order to find the mistake did by Cedric:

1) First, we factorize the 5 outside:

$5(\frac{5x^2}{5}-\frac{40x}{5}+\frac{15}{5})=5(x^2-40x+3)$ --> this step is correct

2) We add +16 and -16 inside the brackets:

$5(x^2-8x+16-16+3)$ --> this step is correct

3) We rewrite the term $(x^2-8x+16)$ as the square of a bynomial, which is $(x-4)^2$ , so the expression becomes

$5((x-4)^2-16+3)$ --> we notice that this step is wrong: in fact, Cedric wrote $(x+4)^2$ , which is not correct.

4) Now we continue: we rewrite -16+3 as -13,

$5((x-4)^2-13)$

5) Finally, we multiply the 5 by the terms in the bracket:

$=5(x-4)^2-65$

5 0

2 years ago