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STALIN [3.7K]
3 years ago
10

What are the answers for question 1 and 2??

Mathematics
2 answers:
lukranit [14]3 years ago
7 0

Answer:

1) Answer: 3)  ~~x = -3 \pm \sqrt{7}

2) Answer: 3) 2 and -6

Step-by-step explanation:

xeze [42]3 years ago
6 0

Answer:

1) Answer: 3)  ~~x = -3 \pm \sqrt{7}

2) Answer: 3) 2 and -6

Step-by-step explanation:

1)

(x + 3)^2 = 7

x + 3 = \pm \sqrt{7}

x = -3 \pm \sqrt{7}

Answer: 3)~~x = -3 \pm \sqrt{7}

2)

2(x + 2)^2 - 4 = 28

2(x + 2)^2 = 32

(x + 2)^2 = 16

x + 2 = \pm \sqrt{16}

x + 2 = \pm 4

x + 2 = 4   or   x + 2 = -4

x = 2   or   x = -6

Answer: x = 2 or x = -6

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One pound of tomatoes costs $1.59.One pound of bananas costs $1.87. How much more do 5 pounds of tomatoes costs than 2 pounds of
Bad White [126]

when you multiply $1.59 by 5 you get $7.95

when you multiply $1.87 by 2 you get $4.74

so when you subtract them you get $3.21

3 0
3 years ago
Plzzz help need answer asap!! i will give brainliest!!​
SCORPION-xisa [38]

the top is adding 1 and the bottom is subtracting 5

4 0
4 years ago
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Assume that x equals x (t )and y equals y (t ). Let y equals x cubed plus 4 and StartFraction dx Over dt EndFraction ​=2 when xe
nika2105 [10]

Answer:dy/dt(x=3)=54

Step-by-step explanation:

We know that we can write:

\frac{dy}{dt}=\frac{dy}{dx} *\frac{dx}{dt}

and so evaluate it as a product of functions, that is for a given value of x or t, we get that  

\frac{dy}{dt}(s)=\frac{dy}{dx} (s) * \frac{dx}{dt}(s).

Now we are told that:

1. x=x(t),\ 2.y=x^3+4,\ \frac{dx}{dt} =2,\ for \ x=3,

whenever it happens, this means the influence of t is hidden, and we only consider the result, that is, how much is x when the derivative has the value of 2, we are not concerned for what value of t it happens, since we get all the necessary information beforehand.

Now we need to calculate

\frac{dy}{dx}=3x^2 \rightarrow \frac{dy}{dx}(3)=3(3)^2=27.

Therefore

\frac{dy}{dt}(x=3)=\frac{dy}{dx} (x=3) * \frac{dx}{dt}(x=3) or

\frac{dy}{dt}(x=3)=27 *2 = 54.

7 0
4 years ago
A rectangle has a height of 3 cm and width of 5cm. A proportional rectangle has a height of 12cm. What would be the width?
Schach [20]

The ratio will be same

  • Let width be x

\\ \sf\longmapsto \dfrac{3}{5}=\dfrac{12}{x}

\\ \sf\longmapsto 3x=5(12)

\\ \sf\longmapsto 3x=60

\\ \sf\longmapsto x=\dfrac{60}{3}

\\ \sf\longmapsto x=20cm

5 0
3 years ago
Read 2 more answers
PLSSS HELP IF YOU TURLY KNOW THISS
Montano1993 [528]
It is 7

2*2x = 4x + 2 = 30

4x = 28

x = 7
6 0
3 years ago
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