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
(5-(-4)^2)^2)
stepladder [879]

Answer:

121

Step-by-step explanation:

You are missing a parentheses

Assuming you just mean to close the parentheses

((5-(-4)^2)^2)

The first step is to complete the inside parentheses

PEMDAS

(5-(-4)^2)

Do the exponents first

(5-(16))

-11

Put this in the equation for (5-(-4)^2)

(-11) ^2

121

6 0
2 years ago
Math!! please please helppp!!!
ololo11 [35]

Answer:

D

Step-by-step explanation:

you can use the slope intercept form: y = mx + b.

y = y cooordinate

m = slope

x = x coordinate

b = y intercept

the y intercept is 4.

the point (1, 7) is what we're going to use.

so the new equation is

7 = m + 4 (it would be 1m, but i rewrote it to be mathmatically correct)

subtract 4 from both sides, you should have 3 = m.

the slope is 3

3 0
2 years ago
PLZ HELPPP MEEEE What is the difference between a rate and a unit rate
slega [8]

A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. ... When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.

hope this helps!

5 0
2 years ago
Please correct answer
erica [24]

Answer:

your right good job

Step-by-step explanation:

3 0
2 years ago
What can you times by 9 to 1296 <br> What can you multiply by 9 to get 1296
ozzi

Answer:

144, would be your answer

Step-by-step explanation: Multiply 144 by 9 and you get 1296.

7 0
3 years ago
Other questions:
  • AEFG - ALMN. Find LM.
    8·1 answer
  • Help with math, please! I need help with 3 questions!
    11·1 answer
  • Thaddeus wants to attend a sports camp this spring that costs $190.00 for the week. He rakes leaves during the fall and earns $6
    13·1 answer
  • Anna lives 0.8 miles from the mall. Which fraction is equivalent to 0.8
    11·2 answers
  • B
    11·1 answer
  • 10x - 22 = 29 - 7x. What is the value of x
    7·1 answer
  • The surface area of a rectangle that has a base of 15in , height of 7in , and a width of 8in
    7·1 answer
  • PLEASE Help this is due today
    15·2 answers
  • Shela has $89 in her bank account. If she uses 30% of her money how mutch was the bill
    7·1 answer
  • Express as a trinomial.<br> (x + 9) (3x + 9)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!