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3 years ago

It math questions: true or false!

Mathematics

2 answers:

NNADVOKAT [17]3 years ago

7 0

Answer:

1: True 2: False 3: True 4: True 5: False

siniylev [52]3 years ago

4 0

Answer:

1 true 2true 3false 4true 5 true

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Solve x2 + 4x – 4 = 0

Damm [24]

Answer:

Quadratic Equations! Yes!

Step-by-step explanation:

Now, there are three methods to solving this:

1.Quadratic Formula

2.Factoring

3. Completing the square

Now, Based on the answers, I think it would be better if we used Quadratic Formula, as you cannot get the answer easily with factoring, and I'm a bit rusty on completing the square.

So, Quadratic Formula! To solve it using this method, we have to find x using this: $x=\frac{-b+-\sqrt{b^{2} -4ac} }{2a}$ (the +- before the square root means it could be both positive or negative)

Where a, b are coefficients and c is a term(in a quadratic equation form: $ax^{2} +bx+c=0$ )

So, we just have to input the stuff from our equation into the formula!

$x=\frac{-4+-\sqrt{32} }{2}$

Now, we can simplify the square root of 32 into 4 times the square root of 2

$x=\frac{-4+-4\sqrt{2} }{2}$

And, we can divide 2 from it all!

$x=-2+-2\sqrt{2}$

So, there you have it! The Answer is C, or 3.

Hope this helps!

4 0

3 years ago

King David was a skilled general and a great ruler, who unified Israel. What type of sentence is this? A. a complex sentence B.

tekilochka [14]

Answer:

C. a simple sentence

Step-by-step explanation:

Simple sentences have one subject and one verb or predicate. Some of these have a direct object or a modifier, but they still only have one subject and one verb. If you need to brush up on these parts of speech, read up on Understanding Subjects, Predicates, and Objects.

plz mark brainliest

5 0

3 years ago

Let the x and y represent the tens digit and ones digit of a two digit number respectively. The sum of the digits of a two-digit

olga2289 [7]

Answer:

The Original Number is 36 :)

explanation:

4 0

3 years ago

(5a-2)(5a+2)-3(1-a)-3a=

attashe74 [19]

So first we need to know the order of operations
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction

Then the special cases:
(I have attached a picture below)

Lets get into action!
(5a - 2)(5a + 2) - 3( 1 - a ) - 3a
25a² - 4 - 3 + 3a - 3a
25a² - 7
25a² - 7 is the answer