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3 years ago

I NEED HELP !!!! PLEASEEEEEEEEEEEE

Mathematics

1 answer:

tankabanditka [31]3 years ago

4 0

Vertex form: y = (x + 1)^2 - 25
vertex: (-1, -25)

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Jacob invested $300 in a savings account and earned $81 in interest at the end of 9 years. What was the interest rate?

ollegr [7]

R = (1/t)(A/P - 1)r = (1/9)((300/81) - 1)Reduce the expression by cancelling the common factors.r=(1/9)(100/27−1)Combine 100/27 and −1 using a common denominator.r=(1/9)(100−1⋅27/27)Simplify the numerator.r=(1/9)(73/27)r = 0.30041152converting r decimal to a percentageR = 0.30041152 * 100 = 30.0412%/yearA. 3%
hope this helps

8 0

4 years ago

An angles vertex is located at (0,0) and the initial ray of the angle points in the 3 oclock direction. Let theta represent the

MrRa [10]

your question is incomplete, here you can find the complete question below:

An angles vertex is located at (0,0) and the initial ray of the angle points in the 3 oclock direction. Let theta represent the varying radian measure of the angle.

a. if the terminal ray of the angle passes through the point(3.38,2.32), whta is the slope of the terminal ray of the angle?

b. if the terminal ray of the angle passes through the point(1.49,3.82), whta is the slope of the terminal ray of the angle?

c. if the terminal ray of the angle passes through the point(1.1,3.95), what is the slope of the terminal ray of the angle?

Answer:

a. 1.45

b. 2.56

c. 3.59

Step-by-step explanation:

As we know that formula to find the slope is change in y-coordinates divided by change in x-coordinates.

$slope=\frac{chnage\ in\ y}{chnage\ in\ x}=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

It is given that initial point is (x1,y1)=(0,0)

Part(a)

initial point is (x1,y1)=(0,0)

terminal point is (x2,y2)=(3.38,2.32)

so the slope of the terminal ray is

$slope=\frac{3.38-0}{2.32-0}=\frac{3.38}{2.32}= 1.45$

Part(b)

initial point is (x1,y1)=(0,0)

terminal point is (x2,y2)=(1.49,3.82)

so the slope of the terminal ray is

$slope=\frac{3.82-0}{1.49-0}=\frac{3.82}{1.49}=2.56$

Part(c)

initial point is (x1,y1)=(0,0)

terminal point is (x2,y2)=(1.1,3.95)

so the slope of the terminal ray is

$slpoe=\frac{3.95-0}{1.1-0}=\frac{3.95}{1.1}= 3.59$

6 0

3 years ago

Tiffany made 1 gallon of tea. Which of these is equal to 1 gallon? A) 6 cups B) 6 pints C) 8 cups D) 8 pints

gayaneshka [121]

Answer:

Your answer is D) 8 pints

Step-by-step explanation:

I multiplied 4 by 2 and got 8 when I looked at the problem it only said pints and not cups

4 0

3 years ago

III

docker41 [41]

Answer:

8x+6=-8

x=-1,75

Step-by-step explanation:

8x+6=-8

8x=-8-6

8x÷8=-14÷8

x=1,75

3 0

3 years ago

What is the value of x?<br> Enter your answer in the box.

Mekhanik [1.2K]

It's a heptagon.

The formula of the sum of internal angles in the polygon:

$S=(n-2)\cdot180^o$

Therefore

$120^o+158^o+126^o+125^o+121^o+139^o+x^o=(7-2)\cdot180^o\\\\789^o+x^o=900^o\ \ \ \ |-789^o\\\\x^o=111^o$

5 0

3 years ago