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BartSMP [9]
3 years ago
15

Simplify the following expression using the distributive property

Mathematics
2 answers:
Karolina [17]3 years ago
7 0

Answer:

7z + 84

Step-by-step explanation:

Multiply 7 times z and 12

Elza [17]3 years ago
3 0

Answer:

7z +84

Step-by-step explanation:

7 x z = 7z then you do 7 x 12 = 84

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Triangle ABC is right angled at A. if AB is 20 cm and AC is 15 cm then find length of BC
zhannawk [14.2K]

Answer:

BC = 25

Step-by-step explanation:

To find the length of BC you need to use the pythagorean theorem.  

a^{2} +b^{2}=c^{2}

There are two part to a triangle that need to be put into this equation.  The hypotenuse(c) and the legs(a, b).  The legs would be the side NEXT to the right angle.  The hypotenuse is ACROSS from the right angle.  In this equation we are looking for the hypotenuse.  It doesn't matter which letter the legs replace just remember that the hypotenuse alway has to be C.

20^{2} +15^{2} =c^{2}

Now you have to square the numbers then add.

400+225=c^{2}

625=c^{2}

Now find the square root of 625 to get rid of the squared in the C.

c = 25

Hope this helped.

8 0
3 years ago
The following week, clare earns $75 from delivering newspapers and deposits it in her account. What will her account balance be
dezoksy [38]

Answer: Whatever the original balance was + 75

Step-by-step explanation:

You never gave a concrete value of what the balance of her account was before the new deposit so it is impossible for me to tell you the exact answer, but just add $75 to whatever it was before and you will be correct!  If you tell me the original value I would be more than happy to help you further :)  Have a great rest of your day!

6 0
3 years ago
How do variables help you model real-world situations? Give an example of a model that uses variables and explain how it helps p
Nata [24]
<span>How I use Variables is when i get my pay i get paid 7.50 a hour and work 40 hours a week x=40 Hope this helps =^)

</span>
5 0
3 years ago
Read 2 more answers
A circle has a diameter of 14.5cm
Alenkasestr [34]
The radius will be 7.25cm
The circumference will be about 45.55
The area will be about 165.13
7 0
4 years ago
Which of the following numbers is irrational?
baherus [9]
An irrational number is one that can’t be expressed as a simple fraction.

For instance, the first few digits of the square root of two is written as 1.414213562373095... The digits keep going and cannot be expressed as a fraction. But think of 0.33333... That can easily be written as one-third. The distinguishing feature is that there’s no pattern in the digits for the square root of two.

The first two options are integer fractions. We rule those out immediately. The square root of four is tempting, but realize that it is just equal to two. We come to π (pi).

Arguably the most famous irrational number is π, which starts off as 3.14159265358979... Here, there is again no pattern and the digits extend forever. This meets our definition of our irrational.
8 0
3 years ago
Read 2 more answers
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