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Kaylis [27]
3 years ago
13

Solve this system of equations algebraically: y – 10 = 11x + x2 y – 12x = 30

Mathematics
1 answer:
boyakko [2]3 years ago
6 0
(5, 90) 

You can solve both equations for y and then set equal to each other. Then use the quadratic equation to solve for x
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Nadir saves $1 the first day of a month, $2 the second day, $4 the third day, and so on. He continues to double his savings each
Leto [7]

The answer is $16,384. If this helps you please make it brainliest as it helps me out.

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16,384

6 0
3 years ago
Find the value of x.
Sergio039 [100]

Answer:

can you please show attachments?

3 0
2 years ago
Read 2 more answers
BRAINLIEST+ STARS!!
nasty-shy [4]

<u>To find the density:</u>

 ⇒ must find the relationship between the density, mass, and volume

    ⇒ Density = \frac{mass}{volume}

<u>Let's examine the information given:</u>

  • weight: 1890g
  • dimensions: 8cm * 5cm* 5cm

<u>Let's first find the volume:</u>

   ⇒ the volume is the dimensions multiplied together

      Volume = 8cm * 5cm * 5cm = 200cm^3

<u>LEt's calculate the density now:</u>

  Density = \frac{1890g}{200cm^3} =9.45g/cm^3

<u>Answer:</u> The density of the copper is <u>9.45g/cm^3</u> or <u>Choice (A)</u>

<u></u>

Hope that helps!

6 0
2 years ago
Please help! 9th grade math
Rzqust [24]

Answer:

They switched the w and the -15 at the end

Step-by-step explanation:

When you switch the inequality sign after multiplying or dividing a number, the variable stays on the side its on, even if it looks weird.

5 0
2 years ago
10) please help<br> I don't understand this question at all
malfutka [58]
We can determine this to be a Geometric Sequence with:

a = 2
r = 1/2
an = ?

We must first find an. We know that an = 1/256, therefore we can use this formula to discover an:

an = a * r^n-1
1/256 = 2 * 1/2^n-1
<span>1/256 / 2 = 1/2^n-1
</span>1/512 = 1/2^n-1
<span>log(1/512) = log(1/2^n-1)
</span>9 = n - 1
10 = n

Therefore, we know an = 10

Now we input it into this equation and solve:

Sn = a(1-r^n/1-<span>r)
</span>Sn = 2(1-1/2^10/1-1/2<span>)
</span>Sn = 2(1023/1024 / 1 / 2)
Sn = 2(1023/1024 * 2 / 1)
<span>Sn = 2(2046/1024)
</span><span>Sn = 2(1023/512)
</span>Sn = 1023/256
Sn = 3.992

Geez, that took awhile... xD




3 0
3 years ago
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