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4 years ago

Use the data set below to answer questions 7 to 9

Mathematics

1 answer:

Mariana [72]4 years ago

8 0

Range: 16 (20 - 4)

Median: 9 (average 8 and 10)

Mean: 9.5 (average all the numbers)

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Use the 3 digits 5, 3, and 2 only once in each number how many 3 digit numbers can you make?

Dmitrij [34]

Answer:

532

523

325

352

235

253

so you can make 6

3 0

3 years ago

Norachai traveled to the recycling plant and back. The trip back took 5 hours. He averaged 9mph faster on the trip there than on

irina1246 [14]

Answer:

$His\ average\ speed\ to\ trip\ there\ =45\ mph\\\\His\ average\ speed\ in\ return\ trip=45-9=36\ mph\\\\His\ average\ speed\ during\ whole\ trip=40\ mph$

Step-by-step explanation:

$Let\ distance\ from\ one\ side=d$

Trip:

$Let\ speed\ when\ he\ was\ going=x\ mph\\\\Time\ taken=4\ hours\\\\distance=d\\\\distance=speed\times time\\\\d=x\times 4\\\\d=4x\ ...................................eq(1)$

Return Trip:

$Speed=x-9\ \ \ \ \ (as\ it\ is\ 9\ mph\ slower)\\\\Time\ taken=5\ hours\\\\Distance=d\\\\Distance=speed\times time\\\\Distance=5\times (x-9)\\\\d=5x-45\ ........................................eq(2)$

$from\ eq(1)\ and\ eq(2)\\\\5x-45=4x\\\\5x-4x=45\\\\x=45\ mph\\\\from\ eq(1)\\\\d=4\times 45=180\ miles$

$Average\ speed\ during\ whole\ trip=\frac{total\ distance}{total\ time}=\frac{2\times 180}{5+4}=\frac{360}{9}=40\ mph$

$His\ average\ speed\ to\ trip\ there\ =45\ mph\\\\His\ average\ speed\ in\ return\ trip=45-9=36\ mph\\\\His\ average\ speed\ during\ whole\ trip=40\ mph$

8 0

3 years ago

Dana graphs a point on a coordinate plane. The value of the x- coordinate of her is 5 more than the value of the y coordinate of

Natali5045456 [20]

The answer is c that what

7 0

4 years ago

8. The perimeter of an equilateral triangle is 45 cm. 9-15

Dima020 [189]

Answer:

a. 3x = 45

15cm

Step-by-step explanation:

Given the perimeter of an equilateral triangle = 45cm .

Using the equation

3x = 45

Divide both sides by 3

x = 45/3

= 15cm

The length of each side of the triangle is 15cm because an equilateral triangle has its three sides equal

7 0

4 years ago

Quick help

11Alexandr11 [23.1K]

Isn’t it because of dilation?

8 0

2 years ago

Read 2 more answers