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2 years ago

14

NEED HELP ASAP MARK YOU BRAINLIEST what is 30+35+30=

1 answer:

Degger [83]2 years ago

7 0

Answer:

95

Step-by-step explanation:

30+30 is 60

60+35 is 95

Another way to do this is to use multiplication then add. (30x2=60)

Hope I helped!

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A perfume manufacturer uses 0.875 pounds of rose petals to make each bottle of perfume. How many pounds of rose petals would be

trapecia [35]

To solve this problem
Let X be pounds of rose petals needed.
ATQ
0.875 pounds of rose petals are in 1 bottle.
So, 0.875 / 1 = X / 86
( because we have to find how many petals {in pounds}are there in 86 perfume bottles )
cross muliplying both side.
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What is 0.01 rounded to the nearest hundredth

Novosadov [1.4K]

Answer:

It is already rounded to the nearest tenth! Hope this helps!

Step-by-step explanation:

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2 years ago

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Stella [2.4K]

<u>Question:</u>

Find the number of real number solutions for the equation. x^2 + 5x + 7 = 0

<u>Answer:</u>

The number of real solutions for the equation $x^{2}+5 x+7=0$ is zero

<u>Solution:</u>

For a Quadratic Equation of form : $a x^{2}+b x+c=0$ ---- eqn 1

The solution is $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Now , the given Quadratic Equation is $x^{2}+5 x+7=0$ ---- eqn 2

On comparing Equation (1) and Equation(2), we get

a = 1 , b = 5 and c = 7

In $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$ , $b^2 - 4ac$ is called the discriminant of the quadratic equation

Its value determines the nature of roots

Now, here are the rules with discriminants:

1) D > 0; there are 2 real solutions in the equation

2) D = 0; there is 1 real solution in the equation

3) D < 0; there are no real solutions in the equation

Now let solve for given equation

$D= b^2 - 4ac\\\\D = 5^2 - 4(1)(7)\\\\D = 25 - 28 \\\\D = -3$

Since -3 is less than 0, this means that there are 0 real solutions in this equation.

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3 years ago

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Answer:

8 = 8

Step-by-step explanation:

If the numbers are the same, they are equal ( = )

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2 years ago

Select the postulate that is illustrated for the real numbers.

jeka57 [31]

The answer would be 1. The commutative postulate for multiplication. Hope this helped! Good luck! :)

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