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krek1111 [17]
3 years ago
15

Solve (2x + 3) - (9x - 3)

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
3 0

Answer:

-7x + 6

Step-by-step explanation:

You might be interested in
The sum of 5 consecutive even numbers is 250. What is the fourth number in this sequence?
Sophie [7]

Answer:

Our fourth number is 52.

Step-by-step explanation:

Let our first even number be <em>x</em>.

Then the second even number must be (<em>x</em> + 2), the third (<em>x</em> + 4), fourth (<em>x</em> + 6), and the fifth (<em>x </em>+ 8).

They sum to 250. Hence:

x+(x+2)+(x+4)+(x+6)+(x+8)=250

Solve for <em>x</em>. Combine like terms:

5x+20=250

Subtract 20 from both sides:

5x=230

And divide both sides by five. Hence:

x=46

Thus, our sequence is 46, 48, 50, 52, and 54.

Hence, our fourth number is 52.

4 0
3 years ago
Is it true or false! I need help fast thanks!
ladessa [460]

The answer is True.

On differentiating using product rule,

\mathsf {\frac{d}{dx}[xe^{x}] = x(e^{x})+e^{x}(1)}

\mathsf {\frac{d}{dx}[xe^{x}] = e^{x}(x + 1)}

The general form of product rule :

\boxed {\frac{d}{dx}(ab) = a(b')+b(a')}

8 0
2 years ago
Can someone please answer this for me I'm begging
GrogVix [38]
If the length of JK is 16.4 miles, it will be diameter of this circle, the radius will be JK/2 = 8.2 miles

As we know the length of circle is 2π*r  in this case r = 8.2

The arc JM is 1/4 length of the whole circle so arc JM = (2π*8.2)*(1/4) = 2π*8.2/4 = π*8.2/2 = π*4.1

if we assume that π=3.14 the answer will be 3.14 * 4.1 = 12.874.... And as the answer needs to be rounded to the nearest tenth it will be 12.874≈12.9

So the answer will be 12.9
8 0
4 years ago
You have vials containing 250 milligrams of aminophylline in 10 milliliters. How many milliliters are required to administer 300
Dima020 [189]

Answer:

<em>Answer: 12 milliliters</em>

Step-by-step explanation:

<u>Proportions</u>

Each vial contains 250 milligrams of aminophylline in 10 milliliters. This means the concentration of aminophylline in the vials is 250/10 = 25 milligrams/milliliter.

To administer 300 milligrams of aminophylline, we need to find the number of milliliters according to the concentration calculated above.

If each milliliter adds up to 25 milligrams, then to have 300 milligrams, 300/25 = 12 milliliters of aminophylline vials are needed.

Answer: 12 milliliters

4 0
3 years ago
There are 12 girls at a slumber party. 2/3 of the girls brought a sleeping bag. How many girls brought a sleeping bag?
Alborosie

Answer:

8 girlies

Step-by-step explanation:

12/3=4

4x2=8

8 0
3 years ago
Read 2 more answers
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