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4 years ago

Two different types of candy cost 2x, 7x. If you buy 2 of each type, write down an algebric expression of the total cost

Mathematics

1 answer:

deff fn [24]4 years ago

5 0

Answer:

$(18x)

Step-by-step explanation:

2(2x)+2(7x)

=4x+14x

=18x

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The width of a rectangle is one more than twice its length. If the rectangle's perimeter is 44 cm, then its length is ____ cm.

EleoNora [17]

Answer:

Part 1) The length is 7 cm

Part 2) The rate of return is r=11%

Step-by-step explanation:

Part 1)

Let

x ----> the length of rectangle

y ----> the width of rectangle

we know that

The perimeter of rectangle is equal to

$P=2(x+y)$

$P=44\ cm$

$44=2(x+y)$

simplify

$22=x+y$ -----> equation A

The width of a rectangle is one more than twice its length

$y=2x+1$ ----> equation B

substitute equation B in equation A

$22=x+(2x+1)$

solve for x

$3x+1=22\\3x=21\\x=7$

therefore

The length is 7 cm

Part 2) we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=1\ year\\ P=\$1,100\\ I=\$121\\r=?$

substitute in the formula above

$121=1,100(r*1)$

solve for r

$121=1,100(r)$

$r=121/1,100\\r=0.11$

Convert to percentage (Multiply by 100)

$r=0.11*100=11\%$

8 0

3 years ago

Tyrone's hourly wage is $18 and his net pay is 72% of his earnings Tyrone spends about $1800 on his monthly expenses if Tyrone w

allsm [11]

Answer:

The monthly cash inflow is $273.6

Step-by-step explanation:

It is given that hourly wage is $18 and his net pay is 72% of his earnings.

First, calculate the 72% of $18.

72% of his earnings is $\$18\times \frac{ 72}{100}= \$12.96$ .

Tyrone works 40 hours per week .

The number of working hours in a month is: $40\times4=160 \text{ hours}$

For 1 hour is he was getting $12.96.

For 160 hours he will get: $160\times 12.96=\$2073.6$

His total monthly cash inflow is $2073.6 - $1,800=$273.6

Hence, the monthly cash inflow is $273.6

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4 years ago

Find the area of the rhombus.

antiseptic1488 [7]

The formula for the area of a rhombus using the diagonal dimensions is 1/2 * d1*d2.

Area = 1/2 * 10 * 18 = 90 m^2.

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3 years ago

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BlackZzzverrR [31]

Answer:

Answer is 12, D

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Write 13/25 as a decimal and as a percent

tamaranim1 [39]

Decimal: 0.52
percent: 52%

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