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SVEN [57.7K]
3 years ago
7

James was asked to add 5 to a number and multiply the result by 5. He however first subtracted 5 from the number and then divide

d by 5, getting 5 as the answer. What is the correct answer?​
Mathematics
1 answer:
notka56 [123]3 years ago
8 0

Answer:

175

Step-by-step explanation:

Let's see what James DID to the number (let it be x):

x - 5 [firstly he did this]

then

(x - 5)/5

This is equal to 5.

So,

\frac{x-5}{5}=5\\x-5=25\\x=30

So, this number is 30

The correct answer would thus be:

Adding 5 to 30, which gives us 35

And then multiply by 5, which gives us 35 * 5 = 175

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In right △ABC , the right angle is at C, m∠A=30∘ , and AC=5√ 5 units.
Makovka662 [10]

Answer:

5\sqrt{15}+5\sqrt{5}

Step-by-step explanation:

The core uses the value of the Pythagorean theorem and special angles.

6 0
3 years ago
50 POINTS!!! A side of the triangle below has been extended to form an exterior angle of 148°. Find the value of x.
Bingel [31]
Answer: x= 58°
explanation: interior angles of all triangles add up to 180.
5 0
3 years ago
What is the area of a room that is 3 3/4 yards long and 3 1/3 yards wide
Andreas93 [3]

Answer:

12 1/2 yd^2

Step-by-step explanation:

The area is length times width

A = 3 3/4 * 3 1/3

Change to improper fractions

A = 15/4 * 10/3

Rewriting

A = 15/3 * 10/4

   = 5 * 5/2

   = 25/2

Changing back to a mixed number

   = 12 1/2

6 0
3 years ago
Read 2 more answers
A + (b + c) = (A + b) + c<br><br><br> What property is this equation
Free_Kalibri [48]

Answer:

Step-by-step explanation:

Associative property

7 0
3 years ago
Find the sum of the first one hundred positive integers. see fig 6.26
nignag [31]
Here's a pattern to consider:
1+100=101
2+99=101
3+98=101
4+97=101
5+96=101
.....
This question relates to the discovery of Gauss, a mathematician. He found out that if you split 100 from 1-50 and 51-100, you could add them from each end to get a sum of 101. As there are 50 sets of addition, then the total is 50×101=5050
So, the sum of the first 100 positive integers is 5050.

Quick note
We can use a formula to find out the sum of an arithmetic series:
s =  \frac{n(n + 1)}{2}
Where s is the sum of the series and n is the number of terms in the series. It works for the above problem.
8 0
3 years ago
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