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3 years ago

Write an equation in point slope form that passes through (-1,3) (2,-3) and has a slope of 1/3

Mathematics

1 answer:

shtirl [24]3 years ago

4 0

Step-by-step explanation:

Using point (-1, 3)

y - 3 = 1/3 (x + 1)

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A spinner is half red and half blue. If you spin the spinner twice, what is the probability that you will get red both times?

Usimov [2.4K]

Answer: Probability of getting red both times is $\frac{1}{4}$

Step-by-step explanation:

Since we have given that

A spinner is half red and half blue.

Probability of getting red is given by

$\frac{1}{2}$

Probability of getting blue is given by

$\frac{1}{2}$

Since he spins the spinner twice.

Probability that you will get red both times is given by

$\frac{1}{2}\times \frac{1}{2}\\\\=\frac{1}{4}$

Hence, Probability of getting red both times is $\frac{1}{4}$

4 0

3 years ago

A recipe for trail mix calls for 50 grams of almonds for every 2 cups of oats. The line represents the relationship between the

AnnyKZ [126]

Answer: for every 1 cups of oats there are 25 grams of almonds

Step-by-step explanation:

u would divide 50 by 2 and divide 2 by 2

3 0

3 years ago

A survey of 391 children given at a local elementary school showed that 175 like chocolate ice cream, 150 like pistachio ice cre

poizon [28]

Answer:

325

Step-by-step explanation:

Just add the number of kids who like chocolate, 175 to the number of kids of like pistachio, 150, and you get 325 children

6 0

2 years ago

Y=x+1 y=x^2-1 please help i don't understand

ololo11 [35]

ANSWER

The solution is

$(x=1,y=2),(x=2,y=3)$

EXPLANATION

We have

$y=x+1---(1)$

and

$y=x^2-1---(2)$

Let us substitute equation (1) in to equation (2). This gives us,

$x+1=x^2-1(2)$

We rewrite this as a quadratic equation as the highest degree is 2.

$x^2-x-1-1=0$

This implies that

$x^2-x-2=0$

we factor to obtain,

$x^2+x-2x-2=0$

$x(x-1)-2(x-1)=0$

$(x-1)(x-2)=0$

This means,

$(x-1)=0\:\: or\:\:(x-2)=0$

$x=1\:\: or\:\:x=2$

We substitute this values into any of the above equations, preferably equation (1)

When, $x=1$ , $y=1+1=2$

When, $x=2$ , $y=2+1=3$

The solution is

$(1,2),(2,3)$

8 0

3 years ago

Please help someone

DiKsa [7]

The first equation is x = -1

The second and third equations are no solution

The third equation is all rel numbers.

We can tell each one by solving them. In the first one, you get the following.

4 + x = -8x - 5 ----> Add 8x to both sides

4 + 9x = -5 ----> Subtract 4 from both sides

9x = -9 ----> Divide both sides by 9

x = -1

For the middle two, when you attempt to solve, you get untrue statements. This shows there are no solutions. See the example below.

7 + 2x = 2x - 7 ----> Subtract 2x from both sides

7 = -7 (UNTRUE)

And for the last one, each term cancels out, which shows that we have all real solutions.

-3x + 3 = 3( 1 - x) ----> Distribute the 3

-3x + 3 = 3 - 3x ----> Add 3x to both sides

3 = 3 (TRUE)

8 0

3 years ago