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
Kazeer [188]
3 years ago
6

If ab = 5 and a² + b² = 25, then (a + b)² =​

Mathematics
2 answers:
matrenka [14]3 years ago
5 0
Answer:
35
Explanation:
Recall that (a+b)^2=a^2+2ab+b^2.
We can rearrange it in a way that would make it easier to solve our problem:
(a^2+b^2)+2ab
Now, we just plug in 25 for a^2+b^2, and plug in 5 for ab:
25+2*5
=25+10
=35
prisoha [69]3 years ago
3 0

Answer:

100

Step-by-step explanation:

because 5+5=10

the 10^2=10*10=100

You might be interested in
Pls help I will give u brainlest whoever is first and gets it right!
Viktor [21]

Answer:

the answer is D

Step-by-step explanation:

3 0
3 years ago
A sales person is paid a weekly salary of $760, plus a commission of 7.5% of all her sales for the week. Express her weekly inco
Elis [28]

Answer:

1. We can see that salesperson's weekly income is the sum of her constant weekly salary ($760) and a commission which is variable and depends on her weekly sales.

So, if we say that y is her weekly income and x is her weekly sales, we can write this as:

y = 760 + 0.075x

Note that we had to change percentage to decimal number dividing it by 100.

2  Since for each value of x there is only one corresponding value of y, we can say that this is a function. For any value of x we input there is only one solution we get - that is the main feature of function and a way to tell if something is really a function.

Since this is a function, it can also be written as:

f(x) = 760 + 0.075x

3. Domain of a function is, basically, set of all values of x for which the function can work. That practically means that, since x is weekly sale, it can not be negative (one cannot make -$500 sale, for example). However, it is possible that she doesn't make a sale one week, making it possible for x to be 0. Also, the value of her sales doesn't have to be integer (it is quite possible that she makes $673.50 sale).

All this means that appropriate domain for this function are positive real numbers including 0.

6 0
3 years ago
The histogram below shows cell phone data usage in megabytes (Mb).
k0ka [10]

Answer:

200 – 300 Mb

Step-by-step explanation:

Becuse 200-300 is in the middle of the graph its a really simple qustion

4 0
3 years ago
What digit is in the ten thousands place in the number 925,634,780?
Ludmilka [50]

Answer:

3 because pretend the rest of the numbers are not there it is 3

3 0
3 years ago
It takes Karl 6 hours to drive 372 miles. If he drives at a constant speed during the 6 hours, what is his unit rate? At this ra
Vikki [24]
He drives 62 miles per hour.
And yes, you are right, (496 miles after 8 hours)
5 0
3 years ago
Other questions:
  • Cynthia completed 2 thirds of the items on her to do list in the morning and finished 1 eighth of the item during her lunch brea
    10·1 answer
  • 6. Trapezoid FGHI is similar to trapezoid KLMN. What<br>is the length of GH?​
    5·1 answer
  • Which number produces an irrational number when multipled by 1/4
    12·1 answer
  • Megan picks a card from a deck of cards numbered 1-10 and rolls a number cube. What is the probability she chooses a card with a
    11·2 answers
  • Define intersecting lines
    10·1 answer
  • A ship of height 9 meters is sighted from a lighthouse. From the top of the lighthouse, the angle of depression to the top of th
    5·1 answer
  • Evaluate the following expression. Round to the nearest hundredth when necessary.<br> 27
    7·1 answer
  • Please help what is the answer a b c or d
    11·1 answer
  • I need your help<br><br> what is the meaning of math?
    9·2 answers
  • Martin bought 5 bottles of olive oil. Each bottle contained quart ¾ of oil. What is the total number of quarts of olive oil that
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!