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3 years ago

Please help me asap will appreciate it a lot

Mathematics

1 answer:

attashe74 [19]3 years ago

6 0

Answer:

Step-by-step explanation:

So for this type of problem we use the formula $m= \frac{y_{2}-y_{1} }{x_{2}-x_{1} }$ with each variable (besides m which is slope) representing a different coordinate. (e.g. -3 could be $y_{2}$ in this case.) First, let's define which is which:

(3,2): $x_{1}, y_{1}$

(-2,-3): $x_{2}, y_{2}$

Now we need to replace the variables with their known values: $m=\frac{-3-2}{-2-3}$

Next, let's do the subtraction to simplify: $m=\frac{-5}{-5}$

And we can complete the division (all fractions are division!) to simplify even further: $m = 1$

Therefore, the slope of the line passing through the points (3,2) and (-2,-3) is 1.

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I need help please. Thank you.

AfilCa [17]

The answers are C and B.
Answer A has infinite solutions, and D has no solutions

8 0

3 years ago

Una recta con pendiente -2 ´pasa por el punto P(5, -1). La abscisa del punto Q que está en esa recta es 1. Encuentre la ordenada

oksian1 [2.3K]

Answer:

La ordenada de Q es 7.

Step-by-step explanation:

La ecuación de una recta es:

y = a*x + b

donde a es la pendiente y b es la ordenada al origen.

Para este problema, sabemos que la pendiente es -2

Entonces:

a = -2

y = -2*x + b

También sabemos que esta recta pasa por el punto (5, -1)

Esto significa que cuando evaluamos la ecuación en x = 5, y toma el valor y = -1

Si reemplazamos esos valores en la ecuación, obtenemos:

-1 = -2*5 + b

-1 = -10 + b

-1 + 10 = b

9 = b

Entonces la ecuación de la recta es:

y = -2*x + 9

Sabemos que el punto Q está en la línea, y la abscisa de este punto es 1.

Entonces este punto es Q (1, k)

donde k es la ordenada de este punto.

Porque nuestra línea también pasa por este punto, podemos concluir que cuando x = 1, y = k

Reemplazando eso en la ecuación tenemos:

k = -2*1 + 9 = -2 + 9 = 7

k = 7

La ordenada de Q es 7.

7 0

3 years ago

There are 550 students at Martin Middle School. One bundred and eighty- seven students walk to school. what percent of the stude

Anvisha [2.4K]

For a question like this, all you have to do is remember that a percentage is simply a fraction expressed as a decimal. So, all we have to do is:
$\frac{187}{550}$ , and then multiply our decimal answer by 100 to get the percentage:
$\frac{187}{550}$ = 0.34
0.34 x 100 = 34
Therefore 34% of the students walk to school.
I hope this helped and remember to please try and understand the maths that got the answer, not just writing the answer down :))

4 0

3 years ago

Systems of the Body Constructed Response

fiasKO [112]

Answer:

note: there may be other possible explanations and more body systems can be involved and I can go into much greater detail

1: Nervous system signals your muscles in mouth to abduct and adduct as well as your salivary glands to produce saliva to break down the food, as well as prepare the stomach to digest the food

2: Muscular system moves muscles in mouth to break food down into smaller pieces so there is greater surface area for digestive enzymes to work on the food, then muscles in oesophagus move food to stomach, where stomach muscles churn the broken down food around to speed up digestion

3: Digestive system releases numerous digestive enzymes into the food to break down lipids, carbohydrates and proteins. Small intestines absorb nutrients into bloodstream, and large intestine absorbs water.

4: Excretory system removes excess mostly dry waste through the anus as well as urine from ureter.

6 0

3 years ago

Ben and Tom each take a driving test.

GaryK [48]

Answer:

(b)0.56

Step-by-step explanation:

(a)The tree diagram is attached.

P(Ben Fails)=1-0.8=0.2

P(Tom Fails)=1-0.7=0.3

(b)Probability that both will pass their driving test.

P(both will pass)=0.8 X 0.7 =0.56

(c)Probability that only one of them will pass their driving test.

P(Tom Bass, Ben Fails OR Ben Pass, Tom Fails)

=(0.7 X 0.2)+(0.8 X 0.3)

=0.14+0.24

=0.38

3 0

3 years ago