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2 years ago

I don’t know the answer I just need some points to ask more questions !!! have a good day !!

Mathematics

1 answer:

Dahasolnce [82]2 years ago

5 0

Answer:

what ??

Step-by-step explanation:

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3 pts

lesya692 [45]

Answer:

22.5

Step-by-step explanation:

You subtract 3 from both sides and then divide 2 from both sides which should look like this

3(2x)=48

-3 -3

2x=45

-:- 2

x=22.5

7 0

3 years ago

What is the value of k

Orlov [11]

Answer:

Step-by-step explanation:

I think

4 0

2 years ago

Find the estimates of x^2-x-2=3

Julli [10]

Answer:

$x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-x-2=3\\x^2-x-5=0$

Roots of the quadratic equation $ax^2+bx+c=0$ are

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

So, for the given equation roots are

$x=\frac{1\pm\sqrt{(-1)^2-4(1)(-5)}}{2\cdot 1}\\x=\frac{1\pm\sqrt{21}}{2}\\so, x=\frac{1+\sqrt{21}}{2}\approx 2.79\\or\ x=\frac{1-\sqrt{21}}{2}\approx -1.79$

5 0

2 years ago

The morales family is driving for Philadelphia to Boston so far they have driven 167 miles this is 129 miles less than the total

andrezito [222]

Answer:

296 miles

Step-by-step explanation:

The total distance is the sum of the distance traveled so far and the distance left to go:

167 + 129 = 296

The total distance they must travel is 296 miles.

5 0

3 years ago

I need help!!! :))))

timurjin [86]

Answer:

Step-by-step explanation:

6 0

2 years ago

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