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Snowcat [4.5K]
3 years ago
15

Will mark brainliest and thank you!!! Please help!

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0
The correct answer is maybe 3
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Is 5 a solution to -3x=15
viva [34]

Answer:

No

Step-by-step explanation:

<u>Step 1:  Set x to 5 and check</u>

<u />-3x = 15

-3(5) = 15

-15 \neq  15

So... 5 is not a solution

Answer:  No

3 0
3 years ago
Read 2 more answers
A(n) _____ in the money supply will cause interest rates to decrease, which, in turn, causes spending to _____.
sweet-ann [11.9K]
I think the correct answer from the choices listed above is option B. <span>An increase in the money supply will cause interest rates to decrease, which, in turn, causes spending to increase. Decrease of interest rate means money is cheap which will result to more spending.</span>
6 0
3 years ago
Read 2 more answers
The profit function for a new product is given by p(x) = -4x^2+28x-40, where x is the number sold in thousands. How many items m
Ivenika [448]
The break even point is when profit is equal to zero, or in this case when p(x)=0

4x^2-28x+40=0

4(x^2-7x+10)=0

4(x^2-2x-5x+10)=0

4(x(x-2)-5(x-2))=0

4(x-5)(x-2)=0

So the break even points are when x=2 and 5, which is when 2000 and 5000 units are sold.
3 0
3 years ago
The wildflowers at a national park have been decreasing in numbers. There were 300 wildflowers in the first year that the park s
Scorpion4ik [409]
Although the number of new wildflowers is decreasing, the total number of flowers is increasing every year (assuming flowers aren't dying or otherwise being removed). Every year, 25% of the number of new flowers from the previous year are added.
The sigma notation would be:
∑ (from n=1 to ∞) 4800 * (1/4)ⁿ , where n is the year. 
Remember that this notation should give us the sum of all new flowers from year 1 to infinite, and the values of new flowers for each year should match those given in the table for years 1, 2, and 3
This means the total number of flowers equals:
Year 1: 4800 * 1/4 = 1200 ]
+
Year 2: 4800 * (1/4)² = 300
+ 
Year 3: 4800 * (1/4)³ = 75
+  
Year 4: 4800 * (1/4)⁴ = 18.75 = ~19 (we can't have a part of a flower)
+
Year 5: 4800 * (1/4)⁵ = 4.68 = ~ 5
+ 
Year 6: 4800 * (1/4)⁶ = 1.17 = ~1
And so on. As you can see, it in the years that follow the number of flowers added approaches zero. Thus, we can approximate the infinite sum of new flowers using just Years 1-6:
1200 + 300 + 75 + 19 + 5 + 1 = 1,600

8 0
3 years ago
The circumference of a circle is 25.12 yards. What is the radius of the circle?
ANEK [815]
The circumference is pi times diameter, so put 25.12 over pi to get the diameter. That would be 8. Then divide by 2 to get the radius. That would be 4
6 0
3 years ago
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