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3 years ago

Which expression can be used to determine 50% of 42?

Mathematics

2 answers:

Masja [62]3 years ago

8 0

Answer: B 42 divided by 2

Step-by-step explanation:

snow_lady [41]3 years ago

4 0

Answer: 42 divided by 2

Step-by-step explanation: 50% is one half, and 42/2 is one half of 42.

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Solve plz -4p-2r-15p

IrinaVladis [17]

Answer:

-2r-19p

Step-by-step explanation:

-4p-2r-15p

add like terms

-2r-19p

3 0

3 years ago

Use the compound interest formula A =P(1 + r) t and the given information to solve for r.

Dmitry [639]

Answer:

Rounding to nearest hundredths gives us r=0.06.

So r is about 6%.

Step-by-step explanation:

So we are given:

$A=P(1+r)^t$

where

$A=2300$

$P=1600$

$t=6$ .

$A=P(1+r)^t$

$2300=1600(1+r)^6$

Divide both sides by 1600:

$\frac{2300}{1600}=(1+r)^6$

Simplify:

$\frac{23}{16}=(1+r)^6$

Take the 6th root of both sides:

$\sqrt[6]{\frac{23}{16}}=1+r$

Subtract 1 on both sides:

$\sqrt[6]{\frac{23}{16}}-1=r$

So the exact solution is $r=\sqrt[6]{\frac{23}{16}}-1$

Most likely we are asked to round to a certain place value.

I'm going to put my value for r into my calculator.

r=0.062350864

Rounding to nearest hundredths gives us r=0.06.

8 0

4 years ago

a family of two adults and four children is going to and an amusement park. admission is 421.75 for adults and $15.25 for childr

MAXImum [283]

421.75
2
_____
843.50
+

15.25
4
____
61.00

843.50
+ 61.00
_______
904.50

7 0

3 years ago

Liam invests $5,000 in an account that pays 2.5% compound interest annually. He uses the expression P(1+r)t to find the total va

Zanzabum

Total = Principal × ( 1 + Rate )^years

Total = 5,000 * (1.025)^3
Total = 5,000 * 1.076890625 
Total = 5,384.45 

Source:
http://www.1728.org/compint.htm

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3 years ago

(-2)5 . (-2)3 Product of powers property

cupoosta [38]

Answer:

$-2^{8}$

Step-by-step explanation:

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3 years ago