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3 years ago

X-3+7(x + 3) - 3x – 12

Mathematics

2 answers:

RideAnS [48]3 years ago

8 0

$=\tt x - 3 + 7(x + 3) - 3x - 12$

$=\tt x - 3 + 7x + 21 - 3x - 12$

$=\tt 7x + x - 3x - 3 - 12 + 21$

$=\tt 8x - 3x - 15 + 21$

$\color{plum}=\tt\bold{ 5x + 6}$

<h3>▪︎Therefore :</h3>

$\color{hotpink} =\tt x - 3 + 7(x + 3) - 3x - 12 \color{plum}=\tt\bold{ 5x + 6}$

maks197457 [2]3 years ago

4 0

Answer:

5x+6

Step-by-step explanation:

x-3+7x+21-3x-12

5x+6

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PLSS HELP IF YOU TURLY KNOW THISS

coldgirl [10]

Answer:

x = 7

Step-by-step explanation:

$7x = 49$

$7x \div 7 = 49 \div 7$

$x = 49 \div 7 = 7$

$\boxed{\green{x = 7}}$

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3 years ago

Read 2 more answers

A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea

weqwewe [10]

Answer:

a) 8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

P(X=x)= n!/((n-x)!*x!)*p^x*(1-p)^(n-x)

where

n= total number of questions= 25

p= probability of getting a question right = 1/4

then

a) P(x=n) = p^n = (1/4)²⁵ = 8*88*10⁻⁶ ( 0.00088 %)

b) P(x<5)= F(5)

where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

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4 years ago

On a game board spinner, Taylor won a prize on 6 out of 11 spins. What is the probability that she will win a prize on the next

Reptile [31]

Answer:

D. 6/11

Step-by-step explanation:

Please see the attached file for explanation

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3 years ago

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3 years ago

The endpoints of GE are located at G(–6, –4) and E(4, 8). Using slope-intercept form, write the equation of GE.

lesya692 [45]

Answer:
Equation of the line is:
y = 1.2x + 3.2

Explanation:
The general form of the linear equation is:
y = mx + c
where:
m is the slope
c is the y-intercept

1- getting the slope:
The slope of the line can be calculated using the following formula:
m = $\frac{y2 - y1}{x2 - x1}$

We are given the points:
(-6,-4) representing (x1,y1)
(4,8) representing (x2,y2)
Substitute with the given points in the above equation to get the slope as follows:
m = $\frac{8--4}{4--6} = 6/5$

The equation of the line now is:
y = 1.2x + c

2- getting the y-intercept:
To get the value of the c, we will use any of the given points, substitute in the equation and solve for c.
I will use the point (4,8) as follows:
y = 1.2 x + c
8 = 1.2(4) + c
c = 16/5 = 3.2

Therefore, the equation of the line is:
y = 1.2x + 3.2

Hope this helps :)

4 0

3 years ago