MATHEMATICS MIDDLE SCHOOL

PLEASE HELP ASAP! you WILL get BRAINLIEST! Ameena's boat travels 35 miles per hour. The best fishing spot in the lake is 27 miles away from her starting point.

a. If she drives her boat for 2/3 of an hour, will she make it to the best fishing spot in the lake?

b. How long will Ameena need to drive to get to the best fishing spot in the lake? Express your answer in both a portion of an hour and in minutes.

Answers

Answer 1
Answer:

Answer:

A. no she will not reach the best spot

b. she will need to drive about 47 minutes to reach the best spot

Step-by-step explanation:


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HIGH SCHOOL

A well of diameter 4m is dug 14m deep. The earth taken out is spread evenly all around the well to form a 40cm high embankment. Find the width of the embankment

Answers

Answer:

82.72m

Step-by-step explanation:

Volume = πr2h

= 3.142*7*7*14

= 2,155.41m³

Now that we hav the volume of earth, we go on to find the raduis of the spread

2155.41m³ = 3.142*r²*0.4

2155.41m³ = 1.26r²

r² = 1,710.64

r = 41.36m

Width = diameter = 2r = 82.72m

MIDDLE SCHOOL

Simplify -6 (x - 3) - 4 (y +5) + ( -5) (7 -2b)

Answers

6x/34a I think I'm not sure
MIDDLE SCHOOL

What are the significant digits in the number 12080

Answers

There are a few rules to significant figures. The first is that any non-zero digits count as significant figures, so 1, 2 and 8 are significant figures. Now we have 3 significant figures so far.

(significant figure = sigfig = sf)

There are a few cases in which zero can count as a significant figure. If it is between two non-zero digits, like in 405 (3 sig fig) or in 6074 ( 4 sig fig), so the zero between the 2 and the 8 counts as a significant figure, raising the total of significant figures up to four.

Another case is when a zero is added on the end of a decimal, like in the example 2 (1sf) versus 2.0 (2sf) This is essentially the same as 2, but has 0 added on the end, after the decimal. This zero counts as a significant figure. 12080 has no decimal point, so this does not matter in this example.

The total number of significant figures is 4.
HIGH SCHOOL

Boris's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Boris $5.45
per pound, and type B coffee costs
$4.20
per pound. This month, Boris made
178
pounds of the blend, for a total cost of
$870.10
. How many pounds of type B coffee did he use?

Answers

X=pounds of Type A coffee
y=pounds of Type B coffee

QUANTITY EQUATION:
x+y=178

COST EQUATION:
$5.45x + $4.20y=$870.10

STEP 1:
Solve for one variable in equation one.  Then substitute it in equation two.

x+y=178
subtract y from both sides of the equation
x=178-y


STEP 2:
substitute x=178-y in equation two

5.45x + 4.20y=870.10
5.45(178-y) + 4.20y=870.10
multiply 5.45 by everything in parentheses

(5.45*178)+(5.45*-y)+4.20y=870.10
970.10-5.45y+4.20y=870.10
combine like terms

970.10-1.25y=870.10
subtract 970.10 from both sides

-1.25y=-100
divide both sides by -1.25

y=80 pounds of type B coffee


STEP 3:
Substitute y=80 in either equation to solve for x

x+y=178
x+80=178
subtract 80 from both sides
x=98 pounds of type A coffee


ANSWER:
x=98 pounds of type A coffee
y= 80 pounds of type B coffee


CHECK:
Substitute answers for x & y into either equation to be sure it checks.

5.45x+4.20y=870.10
5.45(98)+4.20(80)=870.10
534.10+336=870.10
870.10=870.10

Hope this helps!  :)

MIDDLE SCHOOL

What is the probability of rolling a dice at most 3 times until a 6 occurs

Answers

Answer:

Probablity of getting six in at most three roll= 0.199.

Step-by-step explanation:

Given: Dice rolled at most 3 times untill a 6 occurs.

First, finding the probablity of getting 6 in a dice if rolled once.

Probablity=

We know, dice have six side, therefore, total number of event will be 6.

∴ Probablity of getting six in one roll=

As given, Dice is rolled at most 3 times.

Now, finding the probablity of getting 6 in a dice if rolled 3 times.

∴ Probablity of getting six in three roll=

⇒ Probablity of getting six in three roll=  

Taking LCD 216

⇒Probablity of getting six in three roll=

⇒Probablity of getting six in three roll=

∴Probablity of getting six in three roll=0.199

           

MIDDLE SCHOOL

Is it true that 50 is 1/10 of 500

Answers

No because 1/10 of 500 would be in the hundreds not the tens (I could be wrong im a beginner)
No because it's in the tens and 10 is not even close to being a 1 tenth of 500 ...if it were to be in the hundreds then it would probably be true
COLLEGE

Peter sold some stock at $37 per share. This was $9 a share less than twice what she paid for it. What price did she pay for the stock? Please simplify thanks

Answers

Suppose she paid x shillings for the shares;
Then;
37+9=2x
46=2x
x=23
She bought each share at 23 dollars


MIDDLE SCHOOL

Add.

Express your answer in simplest form.

5 tenths + 3 tenths = ?

Answers

 0.5

+0.3
---------
0.8
The answer is 8 tenths

ANSWER: 0.5+0.3=0.8 tenths

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MIDDLE SCHOOL

Why would negative numbers not make sense for the values of the variables

Answers

Values are positive numbers, and if the numbers were negative there would infinitely be no numbers to be valued.
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