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lara [203]
3 years ago
8

PLEASE HELP ME.

Mathematics
2 answers:
lakkis [162]3 years ago
8 0
<h3>Answer is  y = -x+4  (choice D)</h3>

======================================

Work Shown:

Find the slope of the line through

(x1,y1) = (0,4) and (x2,y2) = (3,1)

Use the slope formula

m = (y2 - y1)/(x2 - x1)

m = (1 - 4)/(3 - 0)

m = (-3)/(3)

m = -1

The y intercept is 4, so b = 4. This is where the graph crosses the vertical y axis. The y intercept is always where x = 0.

With m = -1 and b = 4, we go from y = mx+b to y = -1x+4 which is y = -x+4

Vladimir79 [104]3 years ago
7 0
The answer is D. Y=-x+4
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Doug is a dog, and his friend Bert is a bird. They live in Salt Lake City, where the streets are 1/16 miles apart and arranged i
DerKrebs [107]

No map given but it shouldn't matter.

E is the 5th letter, L the 12th.

Start at S(6,12).  End at E(10,5)

The vector between them, E-S=(4,-7)

Each unit is 1/16 of a mile, though that probably doesn't matter that much.

Doug has to stay on the grid, so has to run |4|+|7|=11 units.  At 30 mi/hr that takes (11/16)/30 =  0.022916 hours.

Bert can go diagonally, so flies √(4²+7²)=√65 ≈ 8.06 units.  At 20 mi/hr that takes (8.06/16)/20 = 0.025194 hours.

Answer:  Doug wins

Why? Because it's quicker to cover 4+7 at 30 mph than it is to cover √(4²+7²) at 20 mph.  That is, Doug is 1.5 times faster and the 1.5 times the diagonal distance is more than the grid distance.

5 0
3 years ago
Read 2 more answers
I need help ASAP plzzzzz P = 2a + b for a.
dezoksy [38]

Answer:

Step-by-step explanation:

P=2a+b

Solve for a.

Divide both sides by 2 to isolate a.

P=2a+b

P/2=a+b/2

When you rewrite the equation, it becomes:

a=P/2-b/2 (The sign changes from a positive to a negative because you need to move P/2 to the other side to get a to one side)

Therefore, your final answer is: a=P/2-b/2

Hope this helped!

5 0
4 years ago
If SR is 4.5cm and TR is 3cm, what is the measure in degrees of angle S?
kow [346]

Answer: The measure in degrees of angle S is 33.7°

Step-by-step explanation: Please see the attachments below for the complete question as well as the Step-by-step explanation

5 0
3 years ago
Find the product of (3 x 109) and (2 x 109). Write the final answer in scientific notation.
chubhunter [2.5K]

The  product of (3 x 109) and (2 x 109) in scientific notation is 6*10^9

<h3>What is scientific notation?</h3>

scientific notation can be described as the expression in the form  a x 10^b where a is a number or decimal number a is greater than or equal to one.

(3 x 109) * (2 x 109) =6*10^9

Therefore, option D is correct.

Learn more about scientific notation at:

brainly.com/question/27862246

#SPJ1

5 0
2 years ago
Please I need help with questions 3-5 and it’s very hard and I’m struggling with it and if you need to see the picture big then
topjm [15]
3.
m/_QOR + m/_ROS = 90 (because the two angels together make a right angle)

Substitute.

x + 5 + 2x + 7 = 90

3x + 12 = 90
-12 -12

subtract 12 from both sides

3x = 78

Divide each side by 3 to get x by itself

x = 26

4. those two angles in the picture are vertical, which means they're congruent.

with that in mind...the ray makes a right angle on one and the other, w, you dont know. so to get the whole angle you need to add both angles to get the whole thing so...

m/_w + 90 = 125

subtract 90 on both sides

m/_w = 35

4 0
3 years ago
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