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
sattari [20]
2 years ago
6

7xy+4 for x = 5 and y=-2

Mathematics
2 answers:
lapo4ka [179]2 years ago
7 0

Answer:

-66

Step-by-step explanation:

7xy + 4 for x = 5 and y = -2

7(5)(-2) + 4 = 35(-2) + 4 = -70 + 4 = -66

solmaris [256]2 years ago
6 0

Hey!

------------------------------------------------

Solution:

= 7xy + 4

= 7(5)(-2) + 4

= 7(-10) + 4

= -70 + 4

= -66

------------------------------------------------

Answer:

-66

------------------------------------------------

Hope This Helped! Good Luck!

You might be interested in
This table shows numbers of sweets in some tubes, but a coffee stain has deleted one of the figures.
svlad2 [7]
To get the answer, you need to think of it like a see-saw.
Both sides must equal the same relative to 33.5. For example, 32 is 1.5 away from 33.5 so you could say you have 1.5*4 (because theres 4 tubes with 32 sweets). If you were to do this for the whole table, it would look something like this:

(1.5*4)+(0.5*x)=(0.5*9)+(1.5*1)+(2.5*1)

This simplifies to:

6+0.5x=8.5
0.5x=2.5
x= \frac{2.5}{0.5}
x=5

This method can sometimes be inefficient depending on how many values but is probably the simplest way to solve this problem.

hope this helps :)

(sorry the other way is kinda hard to explain possibly ask your teacher tomorrow)
6 0
2 years ago
Wendy and Joyce had the same amount of money. Wendy spent $960 while Joyce spent $2,500. In the end, Wendy had 3 times as much m
julia-pushkina [17]
Each of them started with $4620 at first
7 0
3 years ago
What is the slope of a line that has a y-intercept but no x intercept
IRINA_888 [86]

Answer:

The slope of a line that has a y-intercept but no x-intercept will be zero.

Step-by-step explanation:

If the line has no x-intercept, then it never intersects the x-axis, so it must be parallel to the x-axis.

If a line does not have an x-intercept, it means it would never intersect the x-axis.

Thus, it must be parallel to the x-axis, meaning its slope will be zero. It would be just a horizontal line.

For example, y=9 is the line equation that does not have an x-intercept and its slope is zero.

Therefore, the slope of a line that has a y-intercept but no x-intercept will be zero.

7 0
2 years ago
Determine whether the relation describe c as a function of w.
Delicious77 [7]

Answer:

Function:

c = f(w) = 0.49, 0 < w ≤ 1

            = 0.70,  1 < w ≤ 2

            = 0.91, 2 < w ≤ 3

Step-by-step explanation:

Yes, the relation described can be interpreted as a function.

Here, c is the cost of a mail letter. c depends upon w, which is the weights of the mail letter.

As described in the question, the relation can be expressed as a function.

c can be expressed as a function of w in the following manner:

c(cost of mail) = f(w), where w is the independent variable and c is the dependent variable

c = f(w) = 0.49, 0 < w ≤ 1

            = 0.70,  1 < w ≤ 2

            = 0.91, 2 < w ≤ 3

where, c is in dollars and w is in ounces.

5 0
3 years ago
Can someone please give me a lesson on angles of depression and elevation?
Romashka-Z-Leto [24]

Answer:

Angles of depression and elevation

The term angle of elevation denotes the angle from the horizontal upward to an object. The term angle of depression denotes the angle from the horizontal downward to an object. ... An observer's line of sight would be below the horizontal.

Step-by-step explanation:

I hope it's help u

8 0
3 years ago
Other questions:
  • Find the exact value of x using the rules of special right triangles. Show all of the work.
    11·1 answer
  • Given the quadratic equation below, determine which situation it could represent.
    13·1 answer
  • Use the coordinates of the labeled point to find the point-slope equation of the line.
    11·1 answer
  • Anastasia works at the local museum and has been tracking museum attendance. On Thursday, she counts 220 museum visitors under t
    9·1 answer
  • Identify the type of observational study described. A statistical analyst obtains data about ankle injuries by examining a hospi
    12·1 answer
  • What is the value of cos H?
    10·1 answer
  • Find the quotient.<br> 4/5 ÷ 40<br>a.50 <br> b.32  <br>c.5/10 <br> d.1/50
    7·2 answers
  • 3/4 of the class are girls. 1/6 of the girls have long hair. What fraction of the class with long hair? Place your answer in sim
    14·1 answer
  • Find the range of the function represented by the list of ordered pairs below.
    11·1 answer
  • Is 1.3 million bigger than 65 million
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!