Help PLEASE with this question also

Mathematics

1 answer:

PtichkaEL [24]3 years ago

7 0

I’d say it would be 6/2??? maybe no clue

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What is -2(x+1) simplified

IrinaVladis [17]

Answer:

-2x - 2

Step-by-step explanation:

-2(x + 1)

$(-2)(x+1)$
$(-2)(x)+(-2)(1)$
$-2x - 2$

Therefore, the answer is -2x - 2.

8 0

3 years ago

What is :<br><br>(49^x)(7^x^2)=2401^2

ludmilkaskok [199]

$(49^x)(7 ^{x^2})=2401^2 \\ \\( (7^2)^x)(7 ^{x^2})= (7^4) ^2 \\ \\ 7 ^{2x}\cdot 7^{x^2}=7^{8} \\ \\ 7 ^{2x+x^2} =7^{8} \\ \\2x+x^2 =8$

$x^2-2x-8 = 0\\ \\ a=1, \ b=-2, \ c=-8 \\ \\\Delta =b^2-4ac = (-2)^2 -4\cdot1\cdot (-8) = 4 +32 =36 \\ \\x_{1}=\frac{-b-\sqrt{\Delta} }{2a}=\frac{2-\sqrt{36}}{2 }=\frac{ 2-6}{2}=\frac{-4}{2}=-2 \\ \\x_{2}=\frac{-b+\sqrt{\Delta} }{2a}=\frac{2+\sqrt{36}}{2 }=\frac{ 2+6}{2}=\frac{8}{2}= 4 \\ \\Answer: \ x=-2 \ \ or \ \ x=4$

7 0

3 years ago

Read 2 more answers

Rewrite the equation in standard form y= 4/5x+0.85. Enter answer as ax+by=c or ax+by+c=0

Paraphin [41]

At very minimum, move (4/5)x to the other side of the given equation. Then:

-(4/5)x + y = 0.85. This is the equation in standard form.

3 0

3 years ago

The school band will sell pizzas to raise money for new uniforms. the supplier charges $100 plus $4 per pizza. If the band membe

evablogger [386]

7 x > 4 x + 100
7 x - 4 x > 100
3 x > 100
x > 100 : 3
x > 33.33
Answer: they have to sell 34 pizzas to make a profit.