Twice the sum of a number and negative three is ten. Find the number. Round your answer to the nearest integer, if necessary.

Mathematics

2 answers:

andreev551 [17]3 years ago

6 0

Answer:

x=8

Step-by-step explanation:

2(x-3)=10

2x-6=10

2x=16

x=8

Lina20 [59]3 years ago

3 0

Answer:

x=8

Step-by-step explanation:

The equation is:

2(x + -3) =10

x=8

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Mice21 [21]

9514 1404 393

Answer:

Step-by-step explanation:

The Pythagorean triple (8, 15, 17) is often seen in algebra and geometry problems. You recognize it as choice A, so you know that is a right triangle.

A spreadsheet or graphing calculator can perform the tedium of comparing the sum of squares of the shorter sides to the square of the longer side. The attachment shows a spreadsheet used for that purpose. It identifies the triple (8, 15, 17) as the sides of a right triangle.