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3 years ago

Don leaves home 2pm. he drives 45 miles from home in the first hour

Mathematics

1 answer:

sveta [45]3 years ago

6 0

Answer:

if he leave at 2pm 45 miles in the first hr is the correct answer 3 pm

Step-by-step explanation:

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Directions: For the following systems, determine whether or not the ordered triple (1, -1, -2) is a solution to the equations be

uranmaximum [27]

Put the coordinate and check each

$\\ \rm\Rrightarrow 3x-3y-z=2$

$\\ \rm\Rrightarrow 3(1)-3(-1)-(-2)=2$

$\\ \rm\Rrightarrow 3+3+2=2$

$\\ \rm\Rrightarrow 6+2=2$

$\\ \rm\Rrightarrow 8\neq 2$

$\\ \rm\Rrightarrow 2(1)-3(-1)-2=-3$

$\\ \rm\Rrightarrow 2+3-2=-3$

$\\ \rm\Rrightarrow 3\neq-3$

Unless you did typing mistake on right hand side it's

$\\ \rm\Rrightarrow 1-1-2=-2$

$\\ \rm\Rrightarrow -2=-2$

Yes

$\\ \rm\Rrightarrow 1+2(-1)-(-2)=0$

$\\ \rm\Rrightarrow 1-2+2=0$

$\\ \rm\Rrightarrow 1\neq0$

$\\ \rm\Rrightarrow 5(1)+1-5(-2)=16$

$\\ \rm\Rrightarrow5+1+10=16$

$\\ \rm\Rrightarrow 16=16$

Yes

$\\ \rm\Rrightarrow 4(1)+5(-1)-6(-2)=-13$

$\\ \rm\Rrightarrow 4-5+12=-13$

$\\ \rm\Rrightarrow -1+12=-13$

$\\ \rm\Rrightarrow 11\neq -13$

8 0

2 years ago

WILLL GIVE A BRAINLESST AND 50PTS THANKS

Sedbober [7]

Your answer is B, (t4 - rs5) (t8 + rs5t4 + r2s10)
let me know if you need an explanation :)

3 0

3 years ago

Read 2 more answers

Find the 22nd term of the following sequence: 5, 8, 11, ... 63 71 14 68

Wittaler [7]

68 is the 22nd term of the following sequence.

Step-by-step explanation:

The given sequence is with the same common difference between the two consecutive number in the series thus it is said to be the Arithmetic progression ( AP).
For finding the nth term in the AP we have a formula tn = a + (n-1) × d
Here a is the first term , n is the number of the term to be founded and d is the common difference between the two consecutive number in the series.
Thus here tn = 5 + ( 22 - 1 ) × 3.
On subtracting we get tn = 5 + (21 ) × 3
On multiplying we get tn = 5 + 63
After adding we get tn = 68. It is the 22nd term in the given series.

5 0

4 years ago

Does this graph represent a function? Why or why not?

Yuliya22 [10]

Answer:

It’s D because no lines overlap so it passes the vertical line test

Step-by-step explanation:

5 0

3 years ago

Given: Point C is the midpoint of AB¯¯¯¯¯.

suter [353]

Answer:

See proof below

Step-by-step explanation:

If C is the midpoint of AB, then AC = CB

Given

AC=7x−10;

CB=3x+10

Then 7x - 10= 3x+10

Add 10 to both sides

7x-10+10 = 3x +10+10

7x = 3x + 20

7x - 3x = 10+10

4x = 20

x = 20/4

x = 5

Get AC

AC = 7x - 10

AC= 7(5) - 10

AC = 35-10

AC = 25 (Proved)

3 0

3 years ago