1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
algol [13]
3 years ago
15

I'm stuck on b.please help me!!!!​

Mathematics
1 answer:
Sloan [31]3 years ago
5 0

The area under the speed curve tells you how much distance the vehicle covers.

The distance for first 30 s corresponds to the area of a rectangle with height <em>k</em> m/s and length 30 s, or

(<em>k</em> m/s) (30 s) = 30<em>k</em> m

The distance for the last 20 s corresponds to the area of triangle with height <em>k</em> m/s and length 20 s, or

1/2 (<em>k</em> m/s) (20 s) = 10<em>k</em> m

If the total distance traveled was 1.7 km = 1700 m, then

30<em>k</em> + 10<em>k</em> = 1700

40<em>k</em> = 1700

<em>k</em> = 42.5

You might be interested in
Someone please help me with number 9 and 10
NemiM [27]
9 is c-point L
10 is a- $10,000
3 0
3 years ago
Can anyone help me on this I would appreciate it
kaheart [24]

Answer:

14

Step-by-step explanation:

Triangle=180

180-90 (RA) = 90

90-41= 39

(2x+11)=39

2x=28

x=14

3 0
3 years ago
Read 2 more answers
I don’t understand any of this
Nookie1986 [14]

Answer:

1. 1244.07

2. 653.45

3. 706.86

4. 141.37

5. 2309.07

6. 402.12

7. 863.94

8. 2001.19

9. 197.92

Step-by-step explanation:

6 0
3 years ago
Which is a simplified form of the expression -4(n + 1) – (n + 2)?
Nadya [2.5K]

Answer:

-(5 n + 6)

Step-by-step explanation:

Simplify the following:

-4 (n + 1) - (n + 2)

-4 (n + 1) = -4 n - 4:

-4 n - 4 - (n + 2)

-(n + 2) = -n - 2:

-4 - 4 n + -n - 2

Grouping like terms, -4 - 4 n - 2 - n = (-4 n - n) + (-4 - 2):

(-4 n - n) + (-4 - 2)

-4 n - n = -5 n:

-5 n + (-4 - 2)

-4 - 2 = -(4 + 2):

-5 n + -(4 + 2)

4 + 2 = 6:

-5 n - 6

Factor -1 out of -5 n - 6:

Answer: -(5 n + 6)

4 0
3 years ago
Read 2 more answers
If you have 2 different slopes what is true about the slopes
Anna007 [38]

Answer:

Step-by-step explanation:

If two lines have different slopes, they cannot be the same line. If they share a y-intercept, that means they cross the y -axis at the same y value.  If they share an x value and corresponding y value, they intersect at that point, in this case their y-intercept.

Hope this helped!!

8 0
3 years ago
Other questions:
  • Determine if the statement is always, sometimes, or never true. An exterior angle of a triangle is 180 degrees.
    5·2 answers
  • 3/5 of a fence was installed in 1 1/2 days. how many days to install the whole fence?
    11·2 answers
  • How do I solve for X?
    10·1 answer
  • Assume y varies directly as x.
    12·1 answer
  • A store owner bought a jacket for $20. She sold it in her store for $35.
    14·2 answers
  • Determine if x=-16 is a zero &amp; find the quotiant and the remainder​
    12·1 answer
  • Write an equivalent expression for 6−2(6−9x).<br><br> Equivalent is another way of saying equal.
    11·2 answers
  • Please help simplify each expression 11 points
    15·1 answer
  • How far is the Water Slide from the Restrooms?
    7·2 answers
  • 5x + 13 + (2y-7)i = -2 + i please please help
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!