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3 years ago

Let 2? + 112 = 3What values make an equivalent number sentence after completing the square?

Mathematics

1 answer:

Alexandra [31]3 years ago

7 0

Answer:

Step-by-step explanation:

Here, x² + 13x = -3

Here, as x² + 13x would remain same, you have to add or subtract equivalent number from both sides,

x² + 13x + 3 = 0

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Maria needs to make a total of 80 deliveries this week. So far she has completed 48 of them. What percentage of her total delive

Amiraneli [1.4K]

What I always do to solve this, is find a common factor for each number first.

Usually 4 or 5 works best. I'll use 4.

4 goes into 80 20 times, which means that 4 = 5% of 80.

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(Another way to solve this problem is: simplify 48 / 80. This simplifies to 3/5.

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3 years ago

Solve. Round to the nearest tenth. 6 2-12 19 2x-2 HELP ASAP!!

Strike441 [17]

Answer:

$\displaystyle x = \frac{216}{7}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{6}{19} = \frac{x - 12}{2x - 2}$

Step 2: Solve for x

Cross-multiply: $\displaystyle 6(2x - 2) = 19(x - 12)$
Distribute: $\displaystyle 12x - 12 = 19x - 228$
Isolate x terms: $\displaystyle -12 = 7x - 228$
Isolate x term: $\displaystyle 216 = 7x$
Isolate x: $\displaystyle \frac{216}{7} = x$
Rewrite: $\displaystyle x = \frac{216}{7}$

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2 years ago

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Answer:

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3 years ago

Let 2? + 112 = 3What values make an equivalent number sentence after completing the square?​

Let 2? + 112 = 3What values make an equivalent number sentence after completing the square?