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
love history [14]
2 years ago
9

Can someone help me do this problem and explain it to me step by step? If so I’ll mark you brainliest

Mathematics
1 answer:
Advocard [28]2 years ago
7 0

Answer:

-21

28

Step-by-step explanation:

1) if r = -4

Substitute r = -4 in 3r - 9

= 3 * (-4) - 9

= -12 - 9

= -21

2) ( 4 / 7 ) * x = 16

 4 * x = 16 * 7

 x = 4 * 7

 x = 28

You might be interested in
A library had 6422 music CDs stored on 26 shelves. If the same number of CDs were stored on each shelf, how many CDs were stored
sattari [20]
Simply divide the number of CDs by the number of shelves. 6422 / 26 = 247  247 CDs per shelf.
8 0
3 years ago
Read 2 more answers
Write a question to finish the word problem then solve the problem. The art teacher has 9 boxes of crayons there are 8 crayons i
ikadub [295]
How many crayons are there in total? The answer is 9 boxes multiplied by 8 crayons which equals 72 total crayons.
7 0
3 years ago
Which country was the first to industrialize on the continent of Europe
maxonik [38]

britain is your answer

5 0
2 years ago
Which could you use to prove triangle AED is congruent to triangle CEB?
Hunter-Best [27]

Answer:

Option (C)

Step-by-step explanation:

Given:

In right triangles ΔAED and CEB,

m∠AED = m∠CEB = 90°

DE ≅ BE

AD ≅ BC

To prove:

ΔAED ≅ ΔCEB

                    Statements                         Reasons

1). m∠AED = m∠BC = 90°              1). Given

2). DE = BE                                     2). Given

3). AD = BC                                    3). Given

4). ΔAED ≅ ΔCEB                          4). By HL theorem of congruence

Option (C) is the answer.

4 0
3 years ago
A cylinder and its dimensions are diameter 8.4 cm and height 10.9 cm. Which measurement is closest to the lateral surface area o
Vanyuwa [196]

Answer:

287.64

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • -3 (9x +20) > 15x -20
    14·1 answer
  • You flip 3 coins. Is the probability of obtaining 2 heads and 1 tail in any order the same as the probability of obtaining a hea
    10·1 answer
  • A principal of $1,000 is invested in an account paying an annual interest rate of 6%.
    10·2 answers
  • The CEO of a large corporation asks his Human Resource (HR) director to study absenteeism among its executive-level managers at
    10·1 answer
  • Divide 28 into 2 groups so the ratio is 3 to 4
    11·1 answer
  • I = PRT what is the value of I IF p =8000 r = 0.6 t = 1
    8·1 answer
  • 2x+12 can you tell me plz
    7·2 answers
  • I need help with this please
    8·1 answer
  • Someone please help me!
    9·1 answer
  • A quadratic function is defined by p(x)=(x−1)(x+3).
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!