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Savatey [412]
3 years ago
9

What is the sum of the first 40 even intergers? A.1720 B.1840 C.1580 D.1640

Mathematics
1 answer:
3241004551 [841]3 years ago
4 0

Answer:

if so 2130.12548...x^2

THATS BOT REALLY THE ANSWER.. I JUST REALLLY NEED TO LVL UP.. IM SO SORRY :(

Step-by-step explanation:

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An account earns simple interest $600 at 5% for 2 years find the interest earned
iVinArrow [24]

Answer:

so your answer would be 60$

Step-by-step explanation:

I = P * r * t

Here, P = $600

r = 0.05 (decimal value for 5%)

t = 2 years

Part a)

The interest earned will be:

I = P * r * t

I = 600 * 0.05 * 2

I = $60  

Part b)  

The balance in the account will be $600 plus the interest earned or:

$600 + 60 = $660

7 0
3 years ago
What is the circumference and area of a circle with a radius of 4 meters? Round your answer to the nearest tenth.
Dmitry_Shevchenko [17]
Circumference is 8
Area is 25.12
5 0
3 years ago
Maddy has a bag of 36 marbles. The probability of picking green is 1 in 2, the probability of picking red is 1 in 3, and the pro
KonstantinChe [14]

Answer:  1 in 18

This is the same as writing the fraction 1/18

==============================================================

Explanation:

Since she has 36 marbles total, and the probability of picking green is 1 in 2, this means (1/2)*36 = 18 marbles are green.

Then she also has (1/3)*36 = 12 red marbles and (1/9)*36 = 4 blue marbles.

So far, that accounts for 18+12+4 = 34 marbles in all. That leaves 36-4 = 2 marbles left over that must be black, as it's the only color left.

From that, the probability of choosing a black marble is 2/36 = 1/18.

There's a 1 in 18 chance of Maddy picking a black marble.

1/18 = 0.0556 = 5.56% approximately

7 0
2 years ago
Explain how to find the x-intercept of the graph of y=-8x-12.
jeyben [28]
The x-intercept is when y=0, so we plug that in our equation,
0=-8x-12. +12 on both sides to get 12=-8x. Divide by -8 to get x=-1.5
8 0
3 years ago
Re-write the quadratic function below in Standard Form<br> y=-3 (x - 2)² – 7
pav-90 [236]

Answer:

y=-3x^2+12x-19

Step-by-step explanation:

we know that

The quadratic equation in standard form is equal to

y=ax^{2} +bx+c

we have

y=-3(x-2)^{2}-7

This is a quadratic equation in vertex form

Convert to standard form

y=-3(x^2-4x+4)-7

Apply distributive property

y=-3x^2+12x-12-7

Combine like terms

y=-3x^2+12x-19 ----> quadratic equation in standard form

3 0
2 years ago
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