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3 years ago

Need help with this question!!

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

8 0

the answer is Y=3X+3

zalisa [80]3 years ago

6 0

Hey there!!

How do we find an equation?

We will need to find the slope and the y-intercept :

How do you find slopes?

Ans - In order to find slope, we will need to use the slop formula which is

( y₂ - y₁ ) / ( x₂ - x₁ )

Now let's take two points on the graph :

I would take ( 0 , 3 ) and ( 1 , 6 )

( 6 - 3 ) / ( 1 - 0 )

3 / 1

Hence, the slope is 3

The basic equation :

y = mx + b

m = slope and b = y-intercept

slope = 3

y = 3x + b

Now, let's take a coordinate and plug in the values :

... ( 1 , 6 )

6 = 3 + b

b = 3

The final equation : y = 3x + 3

Hope my answer helps!!

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HELP PLZ

ollegr [7]

Answer:

a. ∠D'A'B'

Step-by-step explanation:

From the graph it is clear that the transformation doesn't affect the size and shape of the figure ABCD.

Only the coordinates of the points are changed with the length of each side remaining the same.

Hence the corresponding angle values will also remain unaltered.

∴ ∠DAB = ∠D'A'B'

5 0

3 years ago

I need help I don't know what to do! ( / is a fraction bar!!)

kari74 [83]

#1 4/5x + 2/3x = 1 -4/15
22/15x = 11/15
x = 1/2

and can u explain what u mean by #2 and #3??

7 0

3 years ago

Graph the equation with work y=-3

Varvara68 [4.7K]

Answer:

x, 0 y, -3

Step-by-step explanation:

i couldn't bring a graph so this is just where to graph it

7 0

2 years ago

Solve the following equation for d:<br> D<br> — =7<br> 5

SIZIF [17.4K]

Answer: x = 35

Explanation: In this problem, notice that D is being divided by 5,

so to get D by itself, we need to multiply both sides of the equation by 5.

Notice that on the left side, the 5 and 5 cancel

each other out, so we are just left with D.

On the right side, we have (7)(5) which is 35.

So x = 35.

Finally, remember that we can check our answer

by plugging a 35 back into the original equation.

So we have $\frac{(35)}{5} = 7$ .

Since this is a true statement, we know that our answer is correct, x = 35.

6 0

3 years ago

A past survey of students taking a standardized test revealed that % of the students were planning on studying engineering in c

Angelina_Jolie [31]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 95% confidence interval is $-0.00870$

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 1068000$

The first proportion $\r p_1 = 0.084$

The second sample size is $n_2 = 1476000$

The second proportion is $\r p_2 = 0.092$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

From the normal distribution table we obtain the critical value of $\frac{ \alpha }{2}$ the value is

$Z_{\frac{\alpha }{2} } =z_c= 1.96$

Now using the formula from the question to construct the 95% confidence interval we have

$(\r p_1 - \r p_2 )- z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2} }$

Here $\r q_1 = 1 - \r p_1$

=> $\r q_1 = 1 - 0.084$

=> $\r q = 0.916$

and

$\r q_2 = 1 - \r p_2$

=> $\r q_2 = 1 - 0.092$

=> $\r q_2 = 0.908$

$(0.084 - 0.092 )- (1.96)* \sqrt{ \frac{0.092* 0.916 }{1068000} + \frac{0.084* 0.908 }{1476000} }$

$-0.00870$

3 0

3 years ago