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avanturin [10]
3 years ago
9

20. Apply the rules for order of operations to simplify 2 + 3 - 4 + (5 * 4).

Mathematics
1 answer:
maria [59]3 years ago
7 0

Answer: D. 21

Step-by-step explanation: {From what I learned} Using P-E-M-D-A-S We take the parentheses first, (5*4)=20, next is addition and subtraction, 2+3-4=1, 1+20= 21

Parentheses

Exponents

Multiply

Divide

Add

Subtract

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Caleb has an offer from a credit card issuer for 0% APR for the first 30 days and 17.68%
svetlana [45]

Solution:- Answer is 19.33%

Annual percentage rate (APR) is the yearly rate for a price which have to pay for borrowing money through credit card.

Here Caleb has an offer from a credit card issue for i=0% APR for the first 30 days.

now, effective interest rate for n= 30 days  

=r=(1+\frac{i}{n} )^n-1\\\Rightarrow\ r=(1+\frac{0}{30} )^{30}-1\\\Rightarrow\ r=(1+0)^{30}-1=1-1=0

After 30 days APR =17.68%=0.1768

n=365-30=335 days

now the effective interest rate for n=335 days

=r=(1+\frac{i}{n} )^n-1\\\Rightarrow\ r=(1+\frac{0.1789}{335} )^{335}-1\\\Rightarrow\ r=(1+0.000527)^{335}-1=(1.000527)^{335}-1=1.1933-1=0.1933

=19.33%

So the effective interest rate for 365 days =0+19.33% =19.33%

So fourth option is correct.

6 0
4 years ago
Read 2 more answers
The students at Walden Middle School are selling tins of popcorn to raise money for new uniforms. They sold 42 tins in the first
sdas [7]

Answer:

$388.50

Step-by-step explanation:

42 tins

$9.25/tin

42*9.25=388.5

So, they raised $388.50

3 0
3 years ago
Read 2 more answers
Each baby dinosaur made 15 paintings and each adult dinasour made 7 paintings. The entire herd made 208 paintings in total, and
Serggg [28]

Answer:

there are 6 baby dinos and 2

Step-by-step explanation:

6 0
3 years ago
`If I measure from the very top point of one wave to the same top point on the next wave, what have I measured?
morpeh [17]
I believe it’s wavelength!
7 0
3 years ago
What is the equation of the line passing through the points (3,6) and (2,10)
andrezito [222]

Answer: y= - 4x+18

Step-by-step explanation:

Equation: y=mx+b

***remember: b is the y-intercept and m is the slope.

m=\frac{y2-y1}{x2-x1}

3= x1

2= x2

6= y1

10=y2

m=\frac{10-6}{2-3}= \frac{4}{1}= -4

m=-4

Now we have y=-4x+b , so let's find b.

You can use either (x,y) such as (3,6) or (2,10) point you want..the answer will be the same:

   (3,6). y=mx+b or 6=-4 × 3+b, or solving for b: b=6-(-4)(3). b=18.

   (2,10). y=mx+b or 10=-4 × 2+b, or solving for b: b=10-(-4)(2). b=18.

Equation of the line: y=-4x+18

3 0
4 years ago
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