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
Rus_ich [418]
2 years ago
14

What is the value of r in: 1/7(105+r)=20

Mathematics
1 answer:
stealth61 [152]2 years ago
6 0
Use the distributive property.

1/7(105 + r) = 20
15 + (1/7)r = 20

Then subtract each side of the equation by 15.

15 + (1/7)r = 20
(1/7)r = 5

Divide both sides by 1/7.

(1/7)r = 5

r = 35

So, the answer to this question is r is equal to 35.
You might be interested in
Ben made a model that was 5 3/4 inches tall. Laquisha made a model that was 70 11/12 inches tall. How many times as tall was Laq
tatyana61 [14]

Answer:

Her model is 37 times as tall as Ben's.

Step-by-step explanation:

70 11/12 ÷ 5 3/4

851/12 ÷ 23/4

851/12 x 4/23

37/1 x 1/1 = 37 times as tall

6 0
3 years ago
Triangle Proofs Please help
oksian1 [2.3K]

Explanation:

There may be a more direct way to do this, but here's one way. We make no claim that the statements used here are on your menu of statements.

<u>Statement</u> . . . . <u>Reason</u>

2. ∆ADB, ∆ACB are isosceles . . . . definition of isosceles triangle

3. AD ≅ BD

and ∠CAE ≅ ∠CBE . . . . definition of isosceles triangle

4. ∠CAE = ∠CAD +∠DAE

and ∠CBE = ∠CBD +∠DBE . . . . angle addition postulate

5. ∠CAD +∠DAE ≅ ∠CBD +∠DBE . . . . substitution property of equality

6. ∠CAD +∠DAE ≅ ∠CBD +∠DAE . . . . substitution property of equality

7. ∠CAD ≅ ∠CBD . . . . subtraction property of equality

8. ∆CAD ≅ ∆CBD . . . . SAS congruence postulate

9. ∠ACD ≅ ∠BCD . . . . CPCTC

10. DC bisects ∠ACB . . . . definition of angle bisector

4 0
2 years ago
the population of a town today is 50000 people if the population decreased by 5% a year what will the towns population be in 10
kramer

The population of the town in 10 years would be 29,937.

5 0
3 years ago
Can someone help me pls!!
nordsb [41]

Answer:

a=1

Step-by-step explanation:

A parallelogram is a quadrilateral with two pairs of parallel sides. Opposite sides of a parallelogram are equal.

Therefore, set any two opposite sides equal to each other to solve for a:

a+3=2a+2,\\\\3=a+2,\\a=\boxed{1}

7 0
2 years ago
Read 2 more answers
Number 8 please help 10 points no links pleAse
vampirchik [111]
The answer is A (3). In the question you are given a list of numbers, these are the results from the science project. In the list, the number 12 appears 5 times, therefore 5 dots are added above the number 12 on the dot plot. 11 appears once, 13 appears 3 times, 14 appears 3 times and 15 appears three times. Hope this helps.
4 0
3 years ago
Other questions:
  • If PQ and RS intersect to form four right angles which statement is true
    14·2 answers
  • A parking garage charges ​$1.08 for the first hour and ​$0.50 for each additional hour or part of an hour. What is the maximum l
    11·1 answer
  • Helpppp plsssssssss !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • According to Wine-Searcher, wine critics generally use a wine-scoring scale to communicate their opinions on the relative qualit
    12·1 answer
  • A bike rider is traveling at a speed of 15 feet per second. Write an expression for the distance the rider has traveled after s
    8·1 answer
  • What does this symbol means *
    10·2 answers
  • ​m = 3 and the line goes through the point (2,4)
    15·2 answers
  • What is 6 times 340 = ?
    9·2 answers
  • 291 divided by 30 standard algorithm​
    8·2 answers
  • Will give brainliest answer please help
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!