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kumpel [21]
2 years ago
14

25. Find the number whose square is 3 less than 4 times the number.

Mathematics
2 answers:
SOVA2 [1]2 years ago
8 0

Answer:

\huge\boxed{\sf x =\{3,1\}}

Step-by-step explanation:

Let the number be x

<u>Given condition:</u>

x² = 4x - 3

Subtract 4x to both sides and add 3 to both sides

x² - 4x + 3 = 0

Using mid-term break

x² - 3x - x + 3 = 0

Take common

x(x-3) - 1(x-3) = 0

Take (x-3) common

(x - 3)(x - 1) = 0

<u>Using zero's method</u>

Either,

x - 3 = 0     OR     x - 1 = 0

x = 3          OR      x = 1

\rule[225]{225}{2}

KonstantinChe [14]2 years ago
4 0

Answer:

1 or 3

Step-by-step explanation:

hope this helps:)

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If a seed is planted, it has a 80% chance of growing into a healthy plant.
AlladinOne [14]

Answer:

0.336

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1-p).

Here, n = 8, r = 7, p = 0.8, and q = 0.2.

P = ₈C₇ (0.8)⁷ (0.2)⁸⁻⁷

P = 0.336

3 0
3 years ago
Figure A is a scale image of Figure B. What is the value of x?
kari74 [83]

Hey there! :)

Answer:

x = 21 units.

Step-by-step explanation:

Since we know Figure A is just Figure B scaled, we can set up a proportion:

\frac{45}{35}= \frac{27}{x}

Cross multiply to solve for x:

45 · x = 35 · 27

45x = 945

Divide both sides by 45:

x = 21 units.

4 0
3 years ago
Brainliest question Please help me now plz
V125BC [204]
Side a = 10.98991
Side b = 11.69522
Side c = 4

Angle ∠A = 70° = 1.22173 rad = 7/18π
Angle ∠B = 90° = 1.5708 rad = π/2
Angle ∠C = 20° = 0.34907 rad = π/9


6 0
3 years ago
Simplify the sum. (7u3 + 8u2 + 7) + (8u3 – 3u + 7)
bazaltina [42]
= (7u³ + 8u² + 7) + (8u³ - 3u + 7)
Operate like terms together:

= 7u³ + 8u³ + 8u² - 3u + 7 + 7
= 15u³ + 8u² - 3u + 14

In short, Your Answer would be: 15u³ + 8u² - 3u + 14

Hope this helps!
8 0
2 years ago
Read 2 more answers
What is this? 3/4(x+8)&gt;1/2(2x+10)
joja [24]

Answer:

-8 < x < -5 or x > -4

Step-by-step explanation:

(Work cannot be showed due to issue occured)

3 0
2 years ago
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