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jek_recluse [69]

3 years ago

11

Is the following relation a function? (6,2) (-2,2) (4,1) (-1,1)

1 answer:

yulyashka [42]3 years ago

6 0

If each x term corresponds to exactly

one y term, the relation is a function.

In the data set shown here, notice that each x term, 6, -2, 4, and -1 appears only once. This means that each x term corresponds to exactly one y term. So yes, the relation is a function.

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line m contains (6,8) and (-1,2). Line n contains (-1,5) and (5,y). what is the value of y if line m is perpendicular to line n

irakobra [83]

Answer:

djg

Step-by-step explanation:

mdfgndajfghladjfghadjkfghdafjkkkkkkhkljsfjlk;dsajlkdsajlksdaljkdfjlksdajdkljlsdkjlksdljakljkfsdjlsdljksfadjfas;lkdfj;lksjf;ksjfksajdfsakdjf;laskjfkadj;fsfj

3 0

3 years ago

Jose needs 6.2 lb of organic blueberries to make smoothies. Organic blueberries are on sale for $2.85 per pound. Jose estimates

guajiro [1.7K]

Answer:

Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.

Step-by-step explanation:

When we round 6.2 lb to the nearest pound we round down, because the digit after point is less than 5 (2<5), so

$6.2\ lb\approx 6\ lb$

When we round $2.85 to the nearest dollar we round up, because the digit after point is greater than 5 (8>5), so

$\$2.85\approx \$3$

Now, 6.2 lb of blueberries will approximately cost

$\$3\cdot 6=\$18$

Hence, Jose incorrectly rounded $2.85 down to $2. The estimate should be $18.

5 0

3 years ago

Read 2 more answers

A train traveling nonstop to its destination is able to make the trip at an average speed of 70 miles per hour. On the return tr

larisa86 [58]

Answer:

Return trip travel time: 7h

Step-by-step explanation:

Let d be the distance.

Index 1 refers to initial trip, index 2 refers to the return trip.

v1=70mi/h

v2=40mi/h

t2=t1+3h, or t1=t2-3h (travel times)

d=v1×t1=v2×t2

v1×(t2-3)=v2×t2

v1 t2 -3 v1=v2 t2

v1 t2 - v2 t2=3 v1

t2(v1-v2)=3v1

t2=3v1/(v1-v2)

Or

t2=3×70/(70-40)=3×70/30=7h

3 0

3 years ago

Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula? Qu

sergejj [24]

Answer:

The answer in the procedure

Step-by-step explanation:

we have

$2=-x+x^{2} -4$

$x^{2}-x-4-2=0$

$x^{2}-x-6=0$

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}-x-6=0$

so

$a=1\\b=-1\\c=-6$

substitute in the formula

$x=\frac{-(-1)(+/-)\sqrt{(-1)^{2}-4(1)(-6)}} {2(1)}$

$x=\frac{1(+/-)\sqrt{25}} {2}$

$x=\frac{1(+/-)5} {2}$

$x=\frac{1(+)5} {2}=3$

$x=\frac{1(-)5} {2}=-2$

8 0

3 years ago

Help please thank you so much

siniylev [52]

Answer:

14

Step-by-step explanation:

If you count the dots (excluding 3 because it says more than three hours) you get 14.

7 0

3 years ago