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3 years ago

URGENT HELP PLEASE!

Mathematics

1 answer:

KonstantinChe [14]3 years ago

3 0

Answer:

Perpendicular lines (c)

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What is -3x^2-4x-4=0

ss7ja [257]

Answer:

<h2>no real solution</h2>

Step-by-step explanation:

$-3x^2-4x-4=0\qquad\text{change the signs}\\\\3x^2+4x+4=0\\\\\text{use the quadratic formula:}\\\\\text{for}\ ax^2+bx+c=0\\\\\text{if}\ b^2-4ac0,\ \text{then an equation has two solutions:}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{We have}\ a=3,\ b=4,\ c=4.\\\\\text{Substitute:}\\\\b^2-4ac=4^2-4(3)(4)=16-48=-32$

8 0

3 years ago

What is the solution for the equation 6x − 8 = 4x? x = . (Input whole number only). (5 points) Blank 1:

vfiekz [6]

Answer:

Step-by-step explanation:

Step 1:

6x - 8 = 4x Equation

Step 2:

6x = 4x + 8 Add 8 on both sides

Step 3:

2x = 8 Subtract 4x on both sides

Step 4:

x = 8 ÷ 2 Divide

Answer:

x = 4

Hope This Helps :)

6 0

3 years ago

-2x+5/2= 17

Alenkinab [10]

No the answer is 5x because simply then,add x

3 0

3 years ago

Read 2 more answers

Will give brainly if correct<br> A) 15<br> B) 100<br> C) 120<br> D) 148

Anna [14]

Answer:

Step-by-step explanation:

4 times 5 is 20 and 20 times 6 is 120

7 0

3 years ago

Find k, the constant of proportionality, for the data in this table. Then write an equation for the relationship.

VashaNatasha [74]

Answer:

$k=\frac{32}{5}$ , $y=\frac{32}{5}x$

$k=6.4$ , $y=6.4x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Find the value of the constant of proportionality k

take any ordered pair from the data

For x=25, y=160

$k=\frac{y}{x}$

substitute the values of x and y

$k=\frac{160}{25}$

simplify

$k=\frac{32}{5}$

The linear equation is equal to

$y=\frac{32}{5}x$

$y=6.4x$

7 0

3 years ago