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3 years ago

11

On Saturday you spent $33, give me $15 to a friend, and receive $20 for mowing your neighbors lawn. You have $21 left. Use two m

ethods to find how much money you started with a day.

1 answer:

Lemur [1.5K]3 years ago

6 0

Answer:

Step-by-step explanation:

M = 33+15+21-20

M = 49

Day started with $49

#1. 49-33=16

#2. 16-15=1

#3. 1+20=21

So basically if you do a step by step process you will most likely get $49

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Perform the indicated operation. 5 2/3 ÷ 2 1/8

bezimeni [28]

5 2/3 ÷ 2 1/8 = 17/3 ÷ 17/8 = 17/3 x 8/17 = 8/3 = 2 2/3

8 0

2 years ago

A competitive cheer team allows only the top 4% of athletes who try out to be part of the team. If the team tryout scorecard has

Marina86 [1]

Answer:

C.) 217

Step-by-step explanation:

If the top 4% of athletes are allowed to be part of the team, then the bottom $1-4\%=96\%$ will not qualify.

We look for a z-score below which $96\%$ of the population lie.

Reading from the z-table as shown in the attachment, this z-value corresponds to $1.74$ .

We now use the z-score formula to find the required minimum qualifying score.

$Z=\frac{x-\mu}{\sigma}$

where $\mu=200,\sigma=10,and\:z=1.74$

We substitute and solve for x.

$1.74=\frac{x-200}{10}$

$x-200=17.4$

$x=200+17.4$

$x=217.4$

$x\approx217$

The correct choice is C

8 0

3 years ago

Y = (x - 5)(x + 1) <br><br> What is the vertex of the parabola ?

Phantasy [73]

Answer:

(2,-9)

Step-by-step explanation:

Multiply out the polynomial to get:

x^2-4x-5

the vertex formula is -b/2a (use the coefficients of the equation above)

-(-4)/2(1) = 4/2 = 2

we know the x value of the vertex is 2. Now we can plug that into the original equation to get the y value.

(2-5)(2+1)

(-3)(3) = -9

so the coordinate is (2,-9)

7 0

2 years ago

*Will give brainliest. I don't understand what I'm doing wrong. Please help

harkovskaia [24]

Alright, so let's look at the variables that we have already.
We have P (1500)
We have R (6.75%, .0675 in decimal form)
And, we have A (7300).
So, let's plug this into the formula
A=P(1+r)^t
7300=1500(1.0675)^t
/1500 /1500
4.866...=1.0675^t
Logarithms are the inverse of exponents, (if y=b^x then logarithm with base b of y =x)
So, we know that
t=logbase1.0675(4.866666)
can also put into your calculator as
t= (log4.8666)/(log1.0675)
Thus:
t=24.22569158
This rounds to (in hundredths)
<u>24.23 years</u>.
Looks like a minor rounding issue is all.

4 0

3 years ago

Annapolis, Maryland has an approximate population of 36,000. Columbus, Ohio has an approximate population of 7.3 x 105. Which of

amid [387]

Given, Annapolis, Maryland has an approximate population of 36,000.

And Columbus, Ohio has an approximate population of $(7.3)(10)^5$ .

First we have to multiply $(7.3)(10)^5$ .

$(7.3)(10^5) = (7.3)(100000) = 730000$

We can see the population of columbus is larger than population of Annapolis.

Now we will divide the population of Columbus by the population of Annapolis to find how much times the population of columbus is larger. We will get,

$\frac{730000}{36000}$ = 20.28 ( Approximately taken upto two decimal place)

So it is more than 20 times.

We can say, The population of columbus is approximately 20 times larger than Annapolis.

We have got the required answer.

Option 3 is correct.

4 0

2 years ago