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Darina [25.2K]
3 years ago
8

Solve the quadratic equation x2−5x=−20 by completing the square.

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0

Answer:

x = \frac{5}{2} + \sqrt[i]{55}/2

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Find the area of the shape below.
m_a_m_a [10]

Answer:

 A_{shape}=A_{triangle}+A_{square}\\\\A_{shape}=(\frac{bh}{2}+s^2)\ units^2

Step-by-step explanation:

I assume that it is a composed figure formed by a triangle and a square.Since you did not  give the dimensions of the triangle and the dimensions of the square, I will giveyou  a general explanation about how to solve this exercise.

The area of the shape will be the sum of the the area of the square and the area of the triangle.

Then, you need to remember that the area of a triangle can be calculated with the following formula:

A_{triangle}=\frac{bh}{2}

Where "b" is the base and "h" is the height.

And the area of a square can be found with this formula:

A_{square}=s^2

Where "s" is the length of any side of the square.

Therefore, the area of the shape will be

 A_{shape}=A_{triangle}+A_{square}\\\\A_{shape}=(\frac{bh}{2}+s^2)\ units^2

3 0
3 years ago
An automotive manufacturer has developed a new type of tire that the research team believes to increase fuel efficiency. The man
Stolb23 [73]

Answer:

One tailed

To conclude if there is an increase in the mean gas mileage due to new type of tire.

Step-by-step explanation:

We are given the following in the question:

The manufacture wants to compare increase in the mean gas mileage.

Population mean = 32 miles per gallon

Thus, the manufacture could carry a hypothesis test to compare mean.

A one tailed test (z-test or t-test) based on the information can be used to compare the increase in mean.

Thus,

The automotive manufacturer should perform a one tailed hypothesis test to conclude if there is an increase in the mean gas mileage due to new type of tire.

6 0
3 years ago
HELPPPPPP FASTTTTTTT PLS
e-lub [12.9K]

Answer:

a nd c

Step-by-step explanation:

5 0
2 years ago
The large sphere has a diameter of 12 feet. What is the volume of the shaded figure? Express the answer in terms of π.
Igoryamba

Answer: A 252 ft3

Step-by-step explanation:

answer is A

7 0
3 years ago
Read 2 more answers
Which of these expressions have positive values and which have negative values? Drag and drop each expression
marusya05 [52]

Answer:

7-(-4)= Positive

-3+(-2)= Negative

5-8= Negative

-10 +12= Positive

Step-by-step explanation:

4 0
3 years ago
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