3 years ago

The sum of twice a number and 5 less than the

Mathematics

1 answer:

Daniel [21]3 years ago

7 0

Answer:

-6

Step-by-step explanation:

Let the number be x.

2x + (x-5) = x - 17

2x + x - 5 = x - 17

3x - x = -17 + 5

2x = -12

: x = -12/2

x = -6

You might be interested in

Mrs. Gomes found that 40% of students at her high school take chemistry. She randomly surveys 12 students. What is the probabili

Virty [35]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is the answer of K < -5 ?

alexira [117]

To your question, "K<-5", that is the answer. So the answer is K<-5

8 0

4 years ago

Michael has $1.95 totally in his collection, consisting of quarters and nickels. The number of nickels is three more than the nu

madreJ [45]

6 quarters = $1.50
9 Nickels = $0.45

Total= $1.95

Answer is 6 quarters and 9 nickels.<span />

4 0

3 years ago

Read 2 more answers

X = ????????? Geometry

bazaltina [42]

Answer:

$\boxed{x = 6}$

Step-by-step explanation:

Using Chord-Chord Power theorem:

=> (2)(x) = (4)(3)

=> 2x = 12

Dividing both sides by 2

=> x = 6

7 0

3 years ago

Please show me how you find x and determine what x is <br> Thank you I appreciate it :)

AfilCa [17]

well, let's notice something, we have two 45° angles, now each of those will give use an equal opposite side, namely if that one side is "x", the other is her twin, "x" as well.

is a right-triangle, so we can use the pythagorean theorem, and we know the sides are x,x,6.

$\bf \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies 6^2=x^2+x^2 \qquad \begin{cases} c=\stackrel{hypotenuse}{6}\\ a=\stackrel{adjacent}{x}\\ b=\stackrel{opposite}{x}\\ \end{cases} \\\\\\ 36=2x^2\implies \cfrac{36}{2}=x^2\implies 18=x^2\implies \sqrt{18}=x\implies \sqrt{9\cdot 2}=x \\\\\\ \sqrt{3^2\cdot 2}=x\implies \boxed{3\sqrt{2}=x}$

7 0

3 years ago