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zavuch27 [327]
2 years ago
7

a 5 digit number had the digits 0,5,7,9, and 0. to the nearest thousand, it rounds to 80000 what is the number? explain.

Mathematics
1 answer:
Murljashka [212]2 years ago
7 0
The Number is 79500, since the nearest thousand for 79500 is 80000
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Class A has 11 pupils and class B has 15 pupils.
Pavlova-9 [17]

Answer:

The mean score in the math test for class B=28.47

Step-by-step explanation:

<em>Step 1: Determine the total number of students in both Classes</em>

Total number of students=number in class A+number in class B

where;

number in class A=11 pupils

number in class B=15 pupils

replacing;

Total number of students=11+15=26 students

<em>Step 2: Determine total score for both classes</em>

Total score for both classes=total score for class A+total score for class B

total score for both classes=mean score for both classes×total number of students

total score for both classes=(49×26)=1,274

total score for class A=mean score for class A×total number of class A students

total score for class A=(77×11)=847

total score for class B=mean score for class B×total number of class B students

total score for class B=m×15=15 m

replacing;

1,274=847+15 m

15 m=1,274-847

15 m=427

m=427/15=28.47

The mean score in the math test for class B=28.47

7 0
3 years ago
Webster Digital received a promissory note of $8,000 for 9 months at 7% simple interest from one of its customers. After 4 month
podryga [215]
Maturity value is given by

FV=P(1+rt)

where: P is the initial value of the promissory note, r is the simple interest rate, and t is the time period (in years).

Given that <span>Webster Digital received a promissory note of $8,000 for 9 months at 7% simple interest from one of its customers.

P = &8,000; t = 9 months = 9 / 12 = 0.75 years; r = 7% = 0.07

FV=8000(1+(0.07\times0.75)) \\  \\ =8000(1+0.0525)=8000(1.0525) \\  \\ =\$8,420

The proceed from a discounted promisory note is given by

X=FV(1-dt)

where: FV is the maturity value of the promissory note, d is the discount rate and t is the number of years remaining from the time the note was discounted to the maturity date.

Given that </span>a<span>fter 4 months, the note was discounted at Bank of Aventura at a discount rate of 10%.

t = 9 months - 4 months = 5 months = 5 / 12 years; d = 10% = 0.1; FV = $8,420

X=8420\left(1-\left(0.1\times \frac{5}{12} \right)\right) \\  \\ =8420\left(1- \frac{1}{24} \right)=8420\left( \frac{23}{24} \right) \\  \\ =\$8,069.17

Therefore, the proceed is $8,069.17
</span>
7 0
2 years ago
Find the total cost of these items, including tax. Round
solniwko [45]

Answer:

Flashlight ;  = $2.99

Water bottle = $1.50

Toothbrush = $1.29

Compass = $3.29

Step-by-step explanation:

Sales tax = 7%

Item: _____ price

Flashlight ;  = $3.20

Water bottle = $1.61

Toothbrush = $1.38

Compass = $3.52

Total cost = price of item + sales tax

Sales tax = 7%

Total cost = (1 + 7%) * price of item

Total cost = (1 + 0.07) * price of item.

Total cost = 1.07* price

Flashlight = 1.07*1.29 = $3.20

Water bottle = 1.07*1.50 = $1.61

Toothbrush = 1.07*1.29 = $1.38

Compass = 1.07*3.29 = $3.52

6 0
3 years ago
Elizabeth earns money by babysitting on the weekends. Last weekend she babysat for 5 hours on Saturday and 2.5 hours on Sunday.
alexandr402 [8]
$15 multiplied by 7.5 equals $112.50
4 0
2 years ago
Read 2 more answers
Explain how to find the exact value of cos(75°).
DanielleElmas [232]

Answer:

\cos(75 \degree)  =  \cos(45 \degree + 30\degree)  \\  \\  =  \cos(45\degree)  \cos(30\degree)  -  \sin(45\degree)  \sin(30\degree)  \\  \\  = ( \frac{1}{ \sqrt{2} } ).( \frac{ \sqrt{3} }{2} ) - ( \frac{1}{ \sqrt{2} } ).( \frac{1}{2} ) \\  \\  =  \frac{ \sqrt{3} }{2 \sqrt{2} }  -  \frac{1}{2 \sqrt{2} }  \\  \\  =  \frac{ \sqrt{3}  - 1}{2 \sqrt{2} }  \\  \\   =  \frac{0.73205}{2.828427}  \\  \\  = 0.2588

4 0
3 years ago
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