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3 years ago

14

Willie wants to save for a new racing bike. If he deposits $250 in a savings account at 4% simple annual interest, what will his

balance be after 3 years?
A. $15
B. $30
C. $265
D. $280

1 answer:

lyudmila [28]3 years ago

6 0

$250x4%=10

$10x3years=$30

$250+$30= $280

Answer- D. $280

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2 years ago

What are the X- and y- intercepts of the line? 2x + 3y = -12

Lera25 [3.4K]

Subtract 2x from both sides.

3y = - 2x - 12

Divide every term by 3 to get the y-variable by itself.

y = - 2/3x - 4

Since the equation is not in slope-intercept form (y = mx + b), your y-intercept is just the number in the b slot. Y-intercept is - 4 or (0, - 4).

Now to find your x-intercept, plug in 0 where the y-variable is and solve for x.

0 = - 2/3x - 4
4 = - 2/3x

Multiply both sides by - 3/2 to isolate the variable.

4(- 3/2) = x
- 12/2 = x
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Your x-intercept is - 6 or (- 6, 0).

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3 years ago

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Does the graph of the equation y = 7 - 2x increase or decrease? A) decreases because the x values decrease from left to right B)

Nutka1998 [239]

Y=mx+b
m=slope=rise/run
if slope>0, then it increases
if slope<0, then decreases because it is going down

y=7-2x
y=-2x+7
-2<0
decreasing
because the y values decrease from left to right
the x values always increase if you go from left to right

B is the answer

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I need help on number two

soldi70 [24.7K]

I believe a would be on the first line.

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2 years ago

Question 8 of 10 What is sin 30º? 60 2 901 D A B. c.. () E. E )

levacccp [35]

Answer:

A. $\displaystyle \frac{1}{2}$

General Formulas and Concepts:

<u>Trigonometry</u>

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

sin 30°

<u>Step 2: Solve</u>

Since sin is opposite over hypotenuse, we need to find the length of the opposite leg of the angle and the length of the hypotenuse.

Given the triangle and it's values, the opposite leg to the 30° angle is 1 and the hypotenuse is 2.

Substituting it into sin, we have:

sin 30° = 1/2 = 0.5

∴ our answer is A.

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2 years ago