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3 years ago

Does the equation below have infinitely many or no solutions? x ≤ −1

Mathematics

1 answer:

alina1380 [7]3 years ago

7 0

It has infinitely solutions because x could be any number below or equal to -1

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Expand(2x-1)(x+5) please answer this ASAP thank you.

hjlf

Answer:

2x² + 9x - 5

Step-by-step explanation:

Given

(2x - 1)(x + 5)

Each term in the second factor is multiplied by each term in the first factor, that is

2x(x + 5) - 1(x + 5) ← distribute both parenthesis

= 2x² + 10x - x - 5 ← collect like terms

= 2x² + 9x - 5

4 0

3 years ago

I need help on #10. very confused

RideAnS [48]

Step-by-step explanation:

$\displaystyle f'(x) = \lim_{h \to 0} \dfrac{f(x + h) - f(x)}{h}$

$\:\:\:\:\:\displaystyle = \lim_{h \to 0} \dfrac{(x+h)^2 -7 -(x^2 - 7)}{h}$

$\:\:\:\:\: \displaystyle= \lim_{h \to 0} \dfrac{(x^2 +2hx + h^2 -7) - (x^2 -7)}{h}$

$\:\:\:\:\: \displaystyle= \lim_{h \to 0} \dfrac{2hx + h^2}{h}$

$\:\:\:\:\: \displaystyle= \lim_{h \to 0} (2x +h)$

$\:\:\:\:\: \displaystyle= 2x$

3 0

3 years ago

Triangle VDG- triangle VNQ <br> What is the value of x? <br> Enter your answer in the box.

AleksAgata [21]

Question:

The image of the question is attached below.

Answer:

x = 40

Solution:

Given ΔVDG $\sim$ ΔVNG.

DG = 207, NQ = 138, GQ = 60, QV = x

In two triangles are similar, then the measures of the corresponding sides are in proportional to each other.

$$\Rightarrow\frac{DG}{NQ}=\frac{GQ}{QV}$

$$ \Rightarrow\frac{207}{138}=\frac{60}{x}$

Do cross multiplication, we get

$$ \Rightarrow{207\times x}=138\times60$

$$ \Rightarrow{207\times x}=8280$

$$ \Rightarrow{207x}=8280$

Divide by 207 on both sides of the equation, we get

$$ \Rightarrow\frac{{207x}}{207} =\frac{8280}{207}$

$$ \Rightarrow x =\frac{8280}{207}$

⇒ x = 40

⇒ QV = 40

Hence the value of x is 40.

3 0

4 years ago

Read 2 more answers

How long would it take to count to 1 million if it takes an average of 1 second to say each number? Give your answer to the near

uysha [10]

Answer:

i am going to say it takes 1 mill seconds? lol.

Step-by-step explanation:

6 0

3 years ago

Debby was packing up some of her old stuff into a box a box can hold 9 pounds but she only filled it up 8/10 full how much weigh

Vikentia [17]

Multiply pounds box can hold by percent full.

= 9 * 8/10
= (9*8)/10
= 72/10
= 7.2 pounds full

ANSWER: 7.2 pounds was in the box

Hope this helps! :)

4 0

4 years ago