2 years ago

What is the value 4x-7 when x=4

1 answer:

8 0

We know that x = 4.
And the know that the equation is 4x - 7 = y.
Now put in the value of x: (4)(4) - 7 = y
Now solve: 16 - 7 = y; 9 = y
So your answer is y. Please mark my answer brainliest when you get the chance, thank you and have a nice day.

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Does 8, 10, 6 form a right triangle

loris [4]

Answer:

Step-by-step explanation:

8, 10, 6

10 - 8 = 2

2 + 6 = 8

8 0

2 years ago

Which Two Numbers Add Up To Negative 26 And Multiply To 11?

Fynjy0 [20]

Xy=11
x+y=-26

x+y=-26
minus x both sides
y=-26-x

sub for y
x(-26-x)=11
-26x-x^2=11
add 26x+x^2 both sides
x^2+26x+11=0

ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

a=1
b=26
c=11

x= $\frac{-26+/-\sqrt{26^{2}-4(1)(11)} }{2(1)}$
x= $\frac{-26+/-\sqrt{676-44} }{2}$
x= $\frac{-26+/-\sqrt{632} }{2}$
x= $\frac{-26+/-2\sqrt{158} }{2}$
x= $-13+/-\sqrt{158}$

x= $-13+\sqrt{158}$ or $-13-\sqrt{158}$

aprox

x=-0.420195 or -25.5698

those are the numbers

5 0

3 years ago

Solve:<br> 2x - 45 = 7x - 9x - x

strojnjashka [21]

Answer:x = 9

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Identify the property shown below: 4+<br>(x + y) = (4+x) + y

Pavlova-9 [17]

to matematyka zlozona 1/2 1/3 1/4