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vodomira [7]
2 years ago
13

1. What is the slope of the line that passes through points (-8,3) and (1,9)?

Mathematics
2 answers:
Serggg [28]2 years ago
8 0

Answer:

The slope should be 8 1/3 which is also 25/3

Step-by-step explanation:

nika2105 [10]2 years ago
7 0

Answer:

2/3 (the first one)

Step-by-step explanation:

let's use

\frac{y2-y1}{x2-x1}

plug in the numbers

\frac{9-3}{1-(-8)}

which becomes

\frac{9-3}{1+8}

then simplify to

\frac{6}{9}

then can be simplified again to

\frac{2}{3}

if you divide 6/9 by 3

so

m = 2/3

which is the first one

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Delaney is saving money in an account that offers 9% simple interest. She deposits 2000 from her grandmother into the account an
Brrunno [24]

Answer:

15years

Step-by-step explanation:

Given data

Rate= 9%

Principal= $2000

Final amount= $4700

The simple interest formula is given as

A= P(1+rt)

Substitute

4700=2000(1+0.09*t)

4700= 2000+ 180t

4700-2000= 180t

2700=180t

t= 2700/180

t= 15 years

Hence the time is 15years

6 0
2 years ago
The sum of corresponding angles is always 180 true or false
Molodets [167]
Your answer is true so yeah
4 0
3 years ago
Read 2 more answers
2) WILL MAKE BRAINLIEST <br><br> write the slope-interception form of the equation of each line.
Norma-Jean [14]

Answer:

1.)  y= 3

2.)  y = 3/4 x -3

Step-by-step explanation:

8 0
2 years ago
I need help with this please!! ​
vovangra [49]

Answer:

{6x}^{3}  +  {9x}^{2}  - 18x + 3

Step-by-step explanation:

1. Expand by distributing sum groups.3x( {2x}^{2}  + 5x - 1) - 3( {2x}^{2}  + 5x - 1)

2. Expand by distributing terms.

{6x}^{3}  +  {15x}^{2}  - 3x - 3( {2x}^{2}  + 5x - 1)

3.Expand by distributing terms.

{6x}^{3}  +  {15x}^{2}  - 3x - ( {6x}^{2}  +  15x - 3)

4. Remove parentheses.

{6x}^{3}  +  {15x}^{2}  - 3x -  {6x}^{2}  - 15x + 3

5. Collect like terms.

{6x}^{3}  +  {15x}^{2}  -  {6x}^{2} ) + ( - 3x - 15x) + 3

6. Simplify.

{6x}^{3}  +  {9x}^{2}  - 18x + 3

Thus. the answer is,

{6x}^{3}  +  {9x}^{2}  - 18x + 3

5 0
2 years ago
Let μ denote the true average radioactivity level(picocuries per liter). The value 5 pCi/L is considered thedividing line betwee
VMariaS [17]

Answer:

H0: μ = 5 versus Ha: μ < 5.

Step-by-step explanation:

Given:

μ = true average radioactivity level(picocuries per liter)

5 pCi/L = dividing line between safe and unsafe water

The recommended test here is to test the null hypothesis, H0: μ = 5 against the alternative hypothesis Ha: μ < 5.

A type I error, is an error where the null hypothesis, H0 is rejected when it is true.

We know type I error can be controlled, so safer option which is to test H0: μ = 5 vs Ha: μ < 5 is recommended.

Here, a type I error involves declaring the water is safe when it is not safe. A test which ensures that this error is highly unlikely is desirable because this is a very serious error. We prefer that the most serious error be a type I error because it can be explicitly controlled.

7 0
2 years ago
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