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Mnenie [13.5K]
3 years ago
14

What are the zeros of f(x)=x^2+3x-10

Mathematics
2 answers:
Lelu [443]3 years ago
7 0

Answer:

x= -5 and x= 2

Step-by-step explanation:

vekshin13 years ago
4 0

You must remember that a polynomial is written like so...

ax^2 + bx + c

In this case...

a = 1

b = 3

c = -10

To factor you must find two numbers who both add up to b (3) AND multiply to c (-10)

-2 + 5 = 3

-2 * 5 = -10

so...

(x - 2)(x + 5)

To find the zero you must set each factor equal to zero and solve for for x like so...

x - 2 = 0

x = 2

x + 5 = 0

x = -5

Hope this helped!

~Just a girl in love with Shawn Mendes

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3/5 = x/6 that = 10 rightt??
Igoryamba
Yesss ur answer is correct
5 0
2 years ago
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The solution of the equation 3(p - 5) = 5p -27 is
inn [45]

Answer:

A)  p = 6

Step-by-step explanation:

Given equation:

3(p - 5) = 5p -27

<u />

Apply the <u>Distributive Property of Multiplication over subtraction law</u>:

⇒ 3 · p - 3 · 5 = 5p - 27

⇒ 3p - 15 = 5p - 27

Add 27 to both sides:

⇒ 3p - 15 + 27 = 5p - 27 + 27

⇒ 3p + 12 = 5p

Subtract 3p from both sides:

⇒ 3p - 3p + 12 = 5p - 3p

⇒ 12 = 2p

⇒ 2p = 12

Divide both sides by 2:

⇒ 2p ÷ 2 = 12 ÷ 2

⇒ p = 6

3 0
2 years ago
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A trader bought x mangoes at the rate of 4 mangoes for 10 naira five of the mangoes were bad so he sold the remaining at the rat
Ilya [14]

Answer:

20 mangoes.

Step-by-step explanation:

Given:

Total  number of mangoes, a trader bought = x

A trader bought at the rate of 4 mangoes for 10 naira.

Five of the mangoes were bad.

He sold the remaining at the rate of 5 mangoes for 20 naira.

He made a gain of 10 naira

Question asked:

Total  number of mangoes, a trader bought = x = ?

Solution:

Unitary method

Cost price of  4 mangoes =  10 naira.

Cost price of  1 mango = \frac{10}{4}

Cost price of x mango = \frac{10}{4}\times x= \frac{5}{2} x

As 5 of the mangoes were bad and he sold the remaining mangoes, then Total number of mangoes sold =  x-5

Sale price of 5 mangoes = 20 naira

Sale price of 1 mango = \frac{20}{5}

Sale price x-5 of mango = \frac{20}{5}\times(x-5)=4(x-5)=4x-20

Now, as we know,

Gain = Sale price - cost price

10 = 4x-20 -\frac{5}{2} x\\ 10=4x-\frac{5}{2} x-20\\10=\frac{8x-5x}{2} -20

10 =\frac{3x}{2} -20

Adding both sides by 20

30=\frac{3x}{2}

Multiplying both sides by 2

60 = 3x

Dividing both sides by 3

x=20

Therefore, total number of mangoes, a trader bought is 20.

3 0
3 years ago
How to solve 2+6|2x-6| &gt; 74
lesya692 [45]

Answer:

2 + 6 + 2x + 6 > 74

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8 0
3 years ago
How to solve y=x-1 2x-y=0
inn [45]
Solve the following system:
{y = x - 1 | (equation 1)
{2 x - y = 0 | (equation 2)

Express the system in standard form:
{-x + y = -1 | (equation 1)
{2 x - y = 0 | (equation 2)

Swap equation 1 with equation 2:
{2 x - y = 0 | (equation 1)
{-x + y = -1 | (equation 2)

Add 1/2 × (equation 1) to equation 2:
{2 x - y = 0 | (equation 1)
{0 x+y/2 = -1 | (equation 2)

Multiply equation 2 by 2:
{2 x - y = 0 | (equation 1)
{0 x+y = -2 | (equation 2)

Add equation 2 to equation 1:
{2 x+0 y = -2 | (equation 1)
{0 x+y = -2 | (equation 2)
Divide equation 1 by 2:
{x+0 y = -1 | (equation 1)
{0 x+y = -2 | (equation 2)
Collect results:
Answer:  {x = -1
                {y = -2
7 0
3 years ago
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