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Oksi-84 [34.3K]
3 years ago
7

What 2 numbers multiply to 30 and add to -11

Mathematics
1 answer:
MissTica3 years ago
4 0

Answer:

-5 and -6

Step-by-step explanation:

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Please help me! :) I will give 15 thank yous! Please help<br> 
Korvikt [17]
80 because if you multiply all them you would get 64,000 then divide it
3 0
3 years ago
A hardware store receives a shipment of bolts that are supposed to be 12 cm long. The mean is indeed 12 cm, and the standard dev
Yuliya22 [10]

Answer: 0.9104

Step-by-step explanation:

Given : A hardware store receives a shipment of bolts that are supposed to be 12 cm long.

Mean : \mu=12\text { cm}

Standard deviation : \sigma= 0.2\text{ cm}

Sample size : n=10

Since, they will declare the shipment defective and return it to the manufacturer if the average length of the 100 bolts is less than 11.97 cm or greater than 12.04 cm.

So for the shipment to be satisfactory, the length of the bolts must be between 11.97 cm and 12.04 cm.

We assume that the length of the bolts are normally distributed.

Let X be the random variable that represents the length of randomly picked bolt .

For Z score : z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x = 11.97

z=\dfrac{11.97-12}{\dfrac{0.2}{\sqrt{100}}}=-1.5

For x = 12.04

z=\dfrac{12.04-12}{\dfrac{0.2}{\sqrt{100}}}=2

By using the standard normal distribution table ,  the probability that the shipment is found satisfactory will be :-

P(511.97

Hence,  the probability that the shipment is found satisfactory=0.9104

3 0
3 years ago
Consider the quadratic equation x^2=4x-5. How many solutions does the equation have
alexandr402 [8]
There is no solution

8 0
3 years ago
Whats 753×5648÷-4519
SIZIF [17.4K]

Answer:

It equals -941.12.... There is a thing caled a calculator you can use for that ;D

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
In triangle DEF measurement angle D = 45 degrees meausrement angle E = 63 degrees and EF = 24 inches. What is DE to the nearest
alexandr1967 [171]
Since the angles add to 180°, angle F is 72°.

Using the law of sines,

DF/sin72° = 24/sin45°
x = 32.28

So, did you just guess at A?

This is just an answer from another website, but it should still work.
7 0
3 years ago
Read 2 more answers
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