5+5x5=?!?!?!??!?!?!?!?!?!????

Mathematics

2 answers:

professor190 [17]3 years ago

8 0

Order of operations says to do PEMDAS
So we will start with the 5*5 which is 25 the add 5 which is 30

Aloiza [94]3 years ago

8 0

5+5 is 10 and then times 5 is 50 so your answer is 50

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Sergio [31]

Answer:

x=-3

y=2

Step-by-step explanation:

To solve this problem you can use the elimination method:

- Multiply the second equation by -6:

$(-6)5x+y=-13\\-30x-6y=78$

- Add both equations:

$6x+6y=-6\\-30x-6y=78\\-------\\-24x=72\\x=-3$

- Substitute the value of x into one of the original equations and solve for y:

$6(-3)+6y=-6\\-18+6y=-6\\6y=12\\y=2$

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3 years ago

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What are the zeros of the function? f(x)=x2+17x+72

Semmy [17]

In order to find zeroes of a function, we will probably want to use our quadratic formula.

-b±√b^2-4(a)(c)/2a

If we know our values, we can plug it in.

Our values:

A=1 (Since there is no number in front of x, it is an assumed 1)
B=17
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Now, We can plug it into our formula.

BE SURE TO PUT PARENTHESIS AROUND ALL TERMS!

-(17)±√(17)^2-4(1)(72)/2(1)

Now we can type it into a calculator!

When we plug it into the formula. It gives us two real solutions (or zeroes) which are represented as:

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3 years ago

In an isosceles triangle, the vertex angle is 112 degrees. What is the measure of each base.

jeka94

Answer:

Step-by-step explanation:

The base angles of an isosceles triangle are congruent

The sum of the 3 angles in a triangle = 180°, hence

180° - 112° = 68°

base angle = $\frac{68}{2}$ = 34°