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
lora16 [44]
3 years ago
6

Evaluate the expression below when x = 7 and y = 8. 5x2−3y

Mathematics
1 answer:
Ghella [55]3 years ago
5 0

Answer:

221

Step-by-step explanation:

Substitute x = 7 and y = 8 into the expression

5(7)² - 3(8)

= 5(49) - 24

= 245 - 24

= 221

You might be interested in
Find the area of the figure.
Vesnalui [34]

Answer:

AREA = 4,850

Step-by-step explanation:

split into two pieces  

formula for triangles- base x height divided by 2

20 x 50 = 100 / 2 = 50

(130 - 50 = 80)

80 x 120 = 9,600 / 2 = 4,800

add...

4,800 + 50 = 4,850

5 0
3 years ago
Top Cat Car wash buys liquid soap in 5 gallon buckets. How many liters in one 5 gallon bucket?
Mandarinka [93]

Answer:

Answer would be C.

1 Gallon=3.78

3.78x5

= 18.9

Step-by-step explanation:

5 0
3 years ago
please help asap!!!!!!!!!! Ashley and Kristin are selling wrapping paper for a school fundraiser. Customers can buy rolls of pla
SCORPION-xisa [38]

Answer:

4x+3y=68

9x+2y=77

plain= 5 shiny=16

Step-by-step explanation:

plain=x shiny=y

6 0
4 years ago
What is the definition of “i”? What do we use it for? Demonstrate with an example of your own.
lyudmila [28]

Answer:

The letter "i" is used to signify that a number is an imaginary number.

Step-by-step explanation:

An imaginary number is one that gives a negative result when squared. This differs from when you square real numbers where you always get a positive result. For example:

i = √-1

Imaginary numbers can be especially useful when trying to find the square root of a real negative number such as -16. Normally we cannot find the square root of -16 but through the use of imaginary numbers we can:

√-16 = 4i

~Hope this helps!~

6 0
3 years ago
What’s the median ?<br> Marking Brainliest!!
NemiM [27]

Answer:

I'm not going to give you the answer because you need to learn this on your own because it isn't hard.

Step-by-step explanation:

There are 4 main things you investigate in a number line: the median, the mode, the range, and mean. The median is the middle of your data set. You find the number of all of your data and find out the middle of that number. You find what line it is in on your data set. The range is the variety of numbers in your data set (for yours its 10). The mean is the average of your data set. The mode is the number that pops up the most (in your case, 2).

8 0
4 years ago
Other questions:
  • What’s the answer for -3(r-4)_&gt;0
    8·1 answer
  • The perimeter of a stage is 116 feet. It is 17 feet wide. How long is it?
    10·1 answer
  • You are repairing a fence and have 7.9 metres of wood. You need 10 metres.
    13·1 answer
  • How do you find largest angle​
    8·1 answer
  • Which describes this angle?
    5·1 answer
  • What is 1 year old have to do with 2years old
    6·1 answer
  • IM DEAD PLS HELP ASAP
    15·1 answer
  • Please tell me what is the answer for this question.
    13·2 answers
  • What is the value of x, rounded to the nearest tenth?
    14·2 answers
  • What is Seventeen less than three times a number
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!