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julia-pushkina [17]
3 years ago
7

I need 25 or more minutes to get ready. Write an iniquality

Mathematics
1 answer:
Charra [1.4K]3 years ago
7 0
X > 25 or x is greater then or equal to 25
-
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There are two values of a for which the equation 5x2+ax+7x+5=0 has only one solution for x. What is the sum of those values of a
JulsSmile [24]

Answer:

-14

Step-by-step explanation:

First of all, we know that 5x^2+ ax+7x +5=0 only has one root. That means that b^2 - 4ac=0, and we can use this to find the discriminant, ax + 7x.

Now, if we simplified 5x^2+ ax+7x +5=0, by dividing it all by 5, it would be x^2+(a+7)/5x + 1 = 0.

After, we can plug what we know into the formula, b^2 - 4ac=0. It would be:

(a+7)^2 / 25 - 4 = 0

(a+7)^2 / 25 = 4

(a+7)^2 = 100

Since this is a square root, a+7 can be both negative or positive.

a+7= 10, or a+7 = -10

a=3, or a=-17

The question asks for the sum of a, which is 3 + (-17) = -14

Therefore, the answer is -14.

:) have fun with your rsm problems, assuming you got this from the portal.

7 0
3 years ago
What's number 19?? And how did u set it up?
Novay_Z [31]
12x=x^2-64
you have to do quadratic formula
6 0
3 years ago
The other two options are…
Sunny_sXe [5.5K]
It’s B

Explanation: use desmos or trust me lol
8 0
3 years ago
A shipment of sugar fills 4 1/3 containers. If each container holds 2 1/7 tons of sugar, what is the amount of sugar in the enti
mr Goodwill [35]

The entire shipment contains 9 2/7 tons of sugar

Step-by-step explanation:

  • Step 1: Find the total amount of sugar in the entire shipment.

Number of containers in the shipment = 4 1/3 = 13/3

Number of tons of sugar = 2 1/7 = 15/7

⇒ Total amount of sugar = 13/3 × 15/7 = 65/7 = 9 2/7 tons

5 0
3 years ago
Read 2 more answers
Need help, please what is the Domain<br> Range<br> Thanks
s2008m [1.1K]

Answer:

See below.

Step-by-step explanation:

The domain which is all the posible values of x is: x is real and  in the interval

[1, 6].

The range is real f(x) in the interval [1, 7].


5 0
3 years ago
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