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
Anni [7]
2 years ago
5

A board 30 metres long is to be divided into 2pieces so that the larger piece is 3 metres longer than twice the shorter piece. H

ow long will the pieces be?
Mathematics
2 answers:
GREYUIT [131]2 years ago
7 0
The answer is : 9 and 21
yawa3891 [41]2 years ago
6 0

Answer: 9 and 21

Step-by-step explanation:

board=30m

divide by 2 pieces

one piece, we call it a

b, the other piece is b= 2a+3

a+b=30

a+2a+3=30

3a=30-3

3a=27

a=9

b=21

You might be interested in
Write an equivalent expression for 7¹² × 7⁴
ira [324]

Answer:

\huge\boxed{7^{16}}

Step-by-step explanation:

We can use exponent rules to try and simplify this expression down.

Exponent rules tell us that x^a + x^b = x^{a+b}.

This means that since we have the same base on both terms (7 and 7), we can add the exponents to get a simplified expression.

12 + 4 = 16

So our simplified expression is 7^{16}.

Hope this helped!

7 0
3 years ago
5k race surveyed runners about their finishing times (f) and the number of previous races they had run (n). The organizers found
vichka [17]
I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
 
SEE ATTACHED IMAGE, PLEASE.
 
The first thing we must do for this case is to define variables.
 n = number of 5k races covered
 f = end time.
 We have the following equation:
 f = -1.2n + 38.1
 We note that the slope of the line is:
 m = -1.2 minutes per race
 Therefore, the time decreases 1.2 minutes when the number of races increases n.
 Answer:
 
The model predicts that for each additional race to runner has run, the finishing time decreases by about 1.2 minutes

3 0
3 years ago
What is the slope of (1,2) (-3,-9)
kati45 [8]

Answer:

(11/4) is the slope

Step-by-step explanation:

1) Subtract the second y value (-9) by the first y value (2) in the coordinates. This equals 11.

2) Then, subtract the second x value (-3) by the first x value (1) in the coordinates. This equals 4.

3) Divide the answer you get for step one by the answer for step 2 and that's your slope. 11/4

8 0
3 years ago
Read 2 more answers
What is the value of
Len [333]

n-2=10n+42\qquad\text{add 2 to both sides}\\\\n=10n+44\qquad\text{subtract 10n from both sides}\\\\-9n=44\qquad\text{divide both sides by (-9)}\\\\\boxed{n=-\dfrac{44}{9}}

8 0
3 years ago
Read 2 more answers
To which set or sets does the number 8.25 belong
Tpy6a [65]

Rational sets also known as ratios

6 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone please help me on this
    5·1 answer
  • Do the equations 1/5x+2=6 and 1/5(x+2)=6 represent the same situation?
    7·1 answer
  • Algebra 2 help ASAP....
    7·2 answers
  • Your fixed expenses are $1,151.65/month. You saved 4 months' worth in an emergency fund, investing 25% in a savings account at a
    12·2 answers
  • Answer plz for brainliest
    9·1 answer
  • How do you find the x and y intercepts?
    7·1 answer
  • Paula is given a litre bottle of water during her fitness assessment at the gym she drinks 375millitres of the water how much is
    9·1 answer
  • Please help, find the exterior angles of the two polygon.
    15·1 answer
  • MADEAAA HELPPPPPPPPPPPPP MEEEEEEEEE
    9·1 answer
  • Janie and Jasmine are playing three games at an arcade. Each of the games requires either 2, 3, or 4 tokens. The girls plan to p
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!