2 years ago

2 x— = ———7 z + 10x = ???

Mathematics

1 answer:

zysi [14]2 years ago

7 0

Answer:

Step-by-step explanation:

2x-3y+z=-3 , x-5y+7z=-11 , -10x+4y-6z=28

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Find the circumference of the circle

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Answer:

72.22

Step-by-step explanation:

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3 years ago

Find f(2) if f(x) = 2x + 1.<br> A) 3 <br> B) 5 <br> C) 7 <br> D) 9

Rufina [12.5K]

Answer:

The answer to your question is letter B

Step-by-step explanation:

Process

1.- Write the equation

f(x) = 2x + 1

find f(2)

2.- Substitute x for 2

f(2) = 2(2) + 1

3.- Simplify

f(2) = 4 + 1

f(2) = 5

5 0

3 years ago

Read 2 more answers

Solve 3x2 + 4x = −5.

Alla [95]

Move the -5 over by adding 5 to both sides
3x^2+4x+5=0
must use quadratic formula

for an equation in the form
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

a=3
b=4
c=5

x= $\frac{-4+/- \sqrt{4^2-4(3)(5)} }{2(3)}$
x= $\frac{-4+/- \sqrt{16-60} }{6}$
x= $\frac{-4+/- \sqrt{-44} }{6}$
x= $\frac{-4+/- 2\sqrt{-11} }{6}$
remember that√-1=i
x= $\frac{-4+/- 2i\sqrt{-11} }{6}$
x= $\frac{-2+/- i\sqrt{-11} }{3}$

x= $\frac{-2+ i\sqrt{-11} }{3}$ or x= $\frac{-2- i\sqrt{-11} }{3}$

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3 years ago

Factor and solve X^2+7x-8=0

adelina 88 [10]

(X^2+8x)-(x-8)=0
x(x+8)-1(x+8)=0
(X-1)(x+8)=0
X= 1
X= -8

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2 years ago

Please answer 1-5 i give brainlesit

Klio2033 [76]

1. 5 and E, 6 and F, 7 and D, 8 and A, 9 and G

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2 years ago