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3 years ago

What is galvanometer ???

Mathematics

1 answer:

ipn [44]3 years ago

3 0

An instrument for detecting and measuring small electric currents

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M is the midpoint of AB.<br> AM = = 4x - 8<br> MB =<br> 5x-3/3<br> Find x and AB

marusya05 [52]

X=-7 AB=-72

steps

since m is a midpoint, AM and MB are congruent so you set the two equations equal to each other, 4x-9=5x-3/3( is this a typo? bc 3/3 is 1)
subtract 4x from both sides m, -8=x-1
add 1 to both sides
x=-7

then plug -7 in for x 4(-7)-8=-36
since the two segments are congruent u do -36 x 2= -72

7 0

2 years ago

The mean of a data set of 6 numbers is 8. The mean of a different data set of 6 numbers is 20. Whats the mean of the combined da

Aleksandr [31]

HERE IS YOUR ANSWER HOOMAN:

STEP BY STEP EXPLANATION FAM:

We have a set of four numbers and the mean is 5. We can see that the sum of the values is 20:

$\frac{20}{4}$ =5

We have another set of three numbers whose mean is 12. We can write that as:

$\frac{36}{3}$ =12

To find the mean of the seven numbers together, we can add the values together and divide by 7:

$\frac{20+36}{7}$ = $\frac{56}{7}$ =8

HOPE DIS HELPED FAM

w(ﾟДﾟ)w

3 0

2 years ago

Please help this hurts

Svetllana [295]

Answer:

6x - 11y = -13 is the answer.

Step-by-step explanation:

Let's plug in the points to see what sticks.

Start with (-4, -1)

1) 11x - 6y = 11(-4) - 6(-1) = -44 + 6 = -38 $\neq$ 13

2) 6x - 11y = 6(-4) - 11(-1) = -24 + 11 = -13

3) 6x - 7y = 6(-4) - 7(-1) = -24 + 7 = -17 $\neq$ 17

4) 6x - 11y = 6(-4) - 11(-1) = -24 + 11 = -13 $\neq$ 13

The only one that fits is #2. Let's try the other point to be sure.

2) 6x - 11y = 6(1.5) - 11(2) = 9 - 22 = -13

3 0

3 years ago

If y varies directly with x and y=100 when x=5, what is the value of k?

horrorfan [7]

When it says varies directly, it means that y and x are going to be on opposite sides of the equals sign and that there is a constant, k,

y=kx

Plug in (5,100)

100=k(5)

K=20

7 0

2 years ago

Whats the value of X?

Nataly_w [17]

The value of is 10 I think

4 0

2 years ago