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3 years ago

Pleaseeee help!!!!!!!! I will mark you as brainlinest for correct answer!!!!!!!!!!

Mathematics

1 answer:

user100 [1]3 years ago

3 0

Let x be the cost of gum 20 years ago.
3x - 3 = 75
3x = 78
X = 78/3
X = 26.
So the write answer is A) 3x - 3 = 75.

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How to make a bar graph shows that sport books received 9 votes if the scale is 0 to 20 by twos where should the bar and for the

skad [1K]

It would go in between 8 and 10 since the scale goes by 2's and 9 is in between 8 and 10. Hope this helps you!

7 0

4 years ago

The variable, y, varies directly with x. If y = 26 when x = 21,<br> what is y when x = 64?

STatiana [176]

Answer:

y=69

Step-by-step explanation:

first step:when y=26 and x=21

c=y-x

c=26-21

c=5

second step: when y is unknown and x=64

To find y we simply add the value of c to x

y=x+c

y=64+5

y=69

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3 years ago

(a) Boris runs 4 miles in 38 minutes. How many miles does he run per minute?

Eva8 [605]

(a) 0.105 miles per minute
(b) $4.4 an hour

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3 years ago

How long would it take you to double your money is the bank pays 3.6% interest, compounded

Lapatulllka [165]

Answer:

$t=19.25\ years$

Step-by-step explanation:

we know that

The formula to calculate continuously compounded interest is equal to

$A=P(e)^{rt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

e is the mathematical constant number

we have

$t=?\ years\\P=x\\r=3.6\%=3.6/100=0.036\\A=2x$

substitute in the formula above

$2x=x(e)^{0.036t}$

solve for t

simplify

$2=(e)^{0.036t}$

Apply ln both sides

$ln(2)=ln[(e)^{0.036t}]$

Applying property of exponents

$ln(2)=[0.036t]ln(e)$

Remember that ln(e) =1

$ln(2)=[0.036t]$

$t=ln(2)/[0.036]$

$t=19.25\ years$

7 0

4 years ago

2. A book costs $5. If the rate of exchange is $1 = 85. Find the cost in Naira.

Georgia [21]

Answer:

425 Naira

Step-by-step explanation:

Multiply your exchange rate by the book cost.

4 0

2 years ago