3 years ago

Hey yall so im taking a test and imm very confused on hwo to find the letter n for the equation

Mathematics

1 answer:

kotegsom [21]3 years ago

8 0

Answer:

n = -7,6

Step-by-step explanation:

n(n+1)+3=45

distributive property: a(b+c) = ab+ac

n²+n+3 = 45

n²+n -42 = 0

factor now

(n+7)(n-6) = 0

n = -7,6

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N/5 - 9n/10 = 1/5 <br> What does n equal ?

miskamm [114]

$\frac{n}{5} - \frac{9n}{10} = \frac{1}{5}$

$\frac{n}{5}* \frac{2}{2}- \frac{9n}{10} = \frac{1}{5}$

$\frac{2n}{10}- \frac{9n}{10} = \frac{1}{5}$

$\frac{-7n}{10} = \frac{1}{5}$ (multiply each side by 10)

-7n = 1/5 * 10

-7n = 10/5

-7n = 2 (divide eaach side by -7)

n = 2/-7

$n =- \frac{2}{7} \ \textless \ -answer$ (or about -0.286)

8 0

2 years ago

Read 2 more answers

What ate the coordinates of the fourth point that could be connected with (-8, 0), (1,0), and (1-5)

Gnesinka [82]

Well you can find out by the question it's pretty easy....

you have to find the same x coordinates and then see what the difference is in the y coordinate. For example, (1,0), and (1,-5) the difference is -5. So for (-8,0), and (1,0) your answer would be (8,-5)

4 0

2 years ago

What is 3x3x4/45 does anyone know the answer

MariettaO [177]

Answer:

4/5 or 0.8

Step-by-step explanation:

3*3*4/45

3*3=9

9*4=32

32/45=4/5

Hope it helps ;)