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
kupik [55]
3 years ago
7

Evaluate zx-xy-7 use x=-3, y=8, and z=-9*​

Mathematics
2 answers:
trapecia [35]3 years ago
8 0

Answer:

44

Step-by-step explanation:

1. substitute variables with their constants

(-9)(-3) - (-3)(8) - 7

2. multiply all like terms

(27) - (-24) - 7

3. Combine all like terms

27 + 24 - 7

51 - 7

= 44

lbvjy [14]3 years ago
3 0

Answer:

44

Step-by-step explanation:

Evaluate z x - x y - 7 where x = -3, y = 8 and z = -9:

z x - x y - 7 = -9 (-3) - -3×8 - 7

Hint: | Multiply -9 and -3 together.

-9 (-3) = 27:

27 - -3×8 - 7

Hint: | Multiply -1 and -3 together.

-(-3) = 3:

27 + 3×8 - 7

Hint: | Multiply 3 and 8 together.

3×8 = 24:

27 + 24 - 7

Hint: | Evaluate 27 + 24 using long addition.

| 1 |  

| 2 | 7

+ | 2 | 4

| 5 | 1:

51 - 7

Hint: | Subtract 7 from 51.

| 4 | 11

| 5 | 1

- | | 7

| 4 | 4:

Answer: 44

You might be interested in
What is the mode of this data set 55 78 43 39 78 61 75 50 43 78
Rom4ik [11]

Mode means MOST.  Which number is displayed the most?

39, 43, 43, 50, 55, 61, 75, <u>78, 78, 78</u>

Answer: 78

Note: I placed the data set into numerical order because it will help you to easily find the mode and also the median (middle number).

5 0
3 years ago
How can I figure out this math problem: Stanley ran a 5 kilometer race in 30 minutes. What was his speed in kilometers per hour?
stiv31 [10]
Since the question is asking for the time units to be in hours, you want to convert 30 minutes to an hour; 0.5

We’re able to use the basic motion formula for velocity to work out this question.

Velocity = distance / time
Velocity = 5 / 0.5
Velocity = 10km/h

Therefore, Stanley’s average speed was 10 kilometres per hour. :)
3 0
2 years ago
How do you rewrite 6^4×6^4 as a single power?
tensa zangetsu [6.8K]

Answer:

6^8

Step-by-step explanation:

6^4 * 6^4

We know that a^b* a^c = a^(b+c)

6^4×6^4  = 6^(4+4) = 6^8

6 0
3 years ago
Read 2 more answers
Paula owns a shoe store in Los Angeles. Whenever she orders a new style of shoe, she orders 5 pairs of that style in each of the
suter [353]

She orders 5 pair in 5 different sizes:

5 x 5 = 25 pair

She orders 3 pair in 3 different sizes:

3 x 3 = 9 pair

Total pairs = 25 + 9 = 34 pair.

7 0
2 years ago
Question 2.2 write down the general formula for the nth term of sequence. Mystic Rose
Misha Larkins [42]

Answer:

The nth term of an arithmetic sequence is given by. an = a + (n – 1)

5 0
2 years ago
Read 2 more answers
Other questions:
  • Dorrian graphed the distance, y, traveled by 2 bikes in x seconds. If the two bikes are racing a distance of 100 feet, which bik
    12·2 answers
  • A $104,000 selling price with $24,000 down at 8 1/2% for 25 years results in a monthly payment of
    14·1 answer
  • What expression is equivalent to -3+2/3y-4-1/3y
    5·1 answer
  • X/4 + 1 = 3x/8<br><br> please help
    13·1 answer
  • How to round to the nearest hundred
    8·2 answers
  • How can I find the fair share of a set of measurements?
    10·2 answers
  • For the same food trailer mentioned in Example 1, explain how to find the experimental probability that the next order is two pi
    10·1 answer
  • -3÷(-2/5) simplify the expression
    12·1 answer
  • Fahim is 6 feet tall. At noon, he stands with the sun behind him casting a shadow. The distance from the top of Fahim's head to
    15·2 answers
  • Ssignment-make sure I can open it.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!