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4 years ago

What is -3(4x-2)=90?

Mathematics

1 answer:

Leviafan [203]4 years ago

6 0

Answer:x=-8

Step-by-step explanation:

-3(4x-2)=90

-12x-6=90

-12x=96

x=-8

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PLZ HELP ASAP!!!!! FIRST PERSON TO ANSWER WILL GET BRAINLIEST!!!!!

Sergeu [11.5K]

Answer:

y+2x=8 y=1/2x+2 2y=4-x

Step-by-step explanation:

3 0

4 years ago

Geometry help anyone ? Please and thank you :)

spayn [35]

I should think that this works just like the trapezoids
volume=base times height
so
base=pir^2
height=x
r=d/2=14/2=7
base=pi7^2=49pi
so

V=49pix
1176pi=49pix
divide both sides by 49pi
24=x
I would say 24 units

3 0

3 years ago

For the equation y=5x+4, determine the value of y when x=-3

Norma-Jean [14]

Answer:

$y=-11$

Step-by-step explanation:

$y=5x+4\\y=5\left(-3\right)+4\\y=-5\cdot \:3+4\\y=-15+4\\y=-11$

6 0

2 years ago

The data shown represent the number of runs made each year during Bill Mazeroski’s career. Check for normality.

const2013 [10]

Answer:

The given data is not normal.

Step-by-step explanation:

We are given the following data:

30, 59, 69, 50, 58, 71, 55, 43, 3, 66, 52, 56, 62, 36, 13, 29, 17, 31

Condition for normality:

Mean = Mode = Median

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{800}{18} = 44.44$

Mode is the most frequent observation of the data.

Since all the value appeared once, there is no mode.

$Median:\\\text{If n is odd, then}\\\\Median = \displaystyle\frac{n+1}{2}th ~term \\\\\text{If n is even, then}\\\\Median = \displaystyle\frac{\frac{n}{2}th~term + (\frac{n}{2}+1)th~term}{2}$

Sorted data: 3, 13, 17, 29, 30, 31, 36, 43, 50, 52, 55, 56, 58, 59, 62, 66, 69, 71

Median =

$=\dfrac{9^{th}+10^{th}}{2} = \dfrac{50+52}{2}=51$

Since the mean, mode and median of data are not equal, the data is not normal.

7 0

4 years ago

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padilas [110]

DE+EF=DF
8x+2=x+9
8x-x=9-2
7x=7
x=7/7
x=1

DF=x+9
put the value of x
DF=1+9
DF=10

4 0

2 years ago

Read 2 more answers