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Dafna11 [192]
2 years ago
5

Find all real values of $x$ such that $x^2-5x + 4=0$.

Mathematics
2 answers:
IRISSAK [1]2 years ago
8 0

Answer:

Find the 58th term of the arithmetic sequence

−20

Step-by-step explanation:

Luda [366]2 years ago
5 0

Answer:

x=4 && x=1

Step-by-step explanation:

x^2 - x - 4x + 4=0

x(x-1) - 4(x - 1)=0

(x-4)(x-1)=0

X=4 and x=1

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Solve y=3x-7 and 4x+3y=18 by substitution
Schach [20]

Answer:

x = 3

y = 2

Step-by-step explanation:

4x + 3(3x - 7) = 18 <em>Substitute</em><em> </em><em>y</em>

4x + 9x - 21 = 18 <em>Simply</em>

13x - 21 = 18 <em>Add</em><em> </em><em>like</em><em> </em><em>terms</em>

13x = 39 <em>Add</em><em> </em><em>2</em><em>1</em>

x = 3 <em>Divide</em><em> </em><em>by</em><em> </em><em>1</em><em>3</em>

y = 3(3) - 7 <em>Substitute</em><em> </em><em>x</em>

y = 9 - 7 <em>Simply</em>

y = 2 <em>Subtract</em>

Let's check:

4(3) + 3(2) = 18

12 + 6 = 18

18 = 18

It works!

5 0
3 years ago
Read 2 more answers
A pack of confectioneries contains candies in four (4) flavors (berry, lemon, orange and cacao), 3 pieces each. Candies are dist
suter [353]

Answer:

The probability is 0.4909

Step-by-step explanation:

The following equation for nCk give as the number of ways in which we can select k elements from a group of n elements:

nCk=\frac{n!}{k!(n-k)!}

Then, there are 220 ways in which we can select 3 candies from the 12 that are in the pack. It is calculated as:

12C3=\frac{12!}{3!(12-3)!}=220

On the other hand, there are 108 different ways to select the 3 candies in which they are all different flavors. It is calculated as:

4C3 * 3C1 * 3C1 * 3C1 = 108

Because, 4C3 give us the number of ways to select 3 flavors from the 4 flavors. From this 3 flavors selected, we are going to select one candie from each one, so we multiply 3 times by 3C1, one for each flavor.

Finally, the probability is the division between the number of ways in which we can select 3 candies with different flavors and the total number of ways in which we can select 3 candies from the 12 in the pack. This is:

P=\frac{108}{220}=0.4909

7 0
3 years ago
Lines c and d are intersected by line p. At the intersection of lines c and p, the bottom left angle is (3 x + 45) degrees. At t
anzhelika [568]

Answer:

its 18

Step-by-step explanation:

i just took the test on edg :)

4 0
3 years ago
In the figure below, which term best describes point V?
Sauron [17]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
Evaluate to 212 base 3 - 121 base 3 + 222 base 3​
aksik [14]

Answer:

212 bp^3 (base pairs cubed) - 121 bp^3 (base pairs cubed) + 222 bp^3 (base pairs cubed) = 313 bp^3 (base pairs cubed

Step-by-step explanation:

5 0
3 years ago
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