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2 years ago

Which 2 number have the mean of 10 and range of 4

Mathematics

1 answer:

BigorU [14]2 years ago

5 0

Answer:

12 and 8

Step-by-step explanation:

→ Set up two equations

x - y = 4

$\frac{x+y}{2} =10 \\ \\x + y = 20$

→ Add the 2 equations together

2x = 24

→ Solve for x

x = 12

→ Substitute into original equation

12 - y = 4

→ Solve

y = 8

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10)

ddd [48]

77, 80, 87, 88, 92, 94, 99
the median is 88
Q1 is 80 and Q3 is 94
94-80 = 14 which is the interquartile range

therefore, your answer is D) 14

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4 years ago

Which equation is quadratic in form?

Drupady [299]

we know that

A quadratic equation is a polynomial with an order of two. Its general form is

$ax^{2} + bx + c = 0$

case a) $6(x + 2)^{2} + 8x + 2 + 1 = 0$

$6(x + 2)^{2} + 8x + 2 + 1 = 0 \\ 6(x^{2} +4x+4)+8x+3=0\\ 6x^{2} +24x+24+8x+3=0\\ 6x^{2} +32x+27=0\\\\ a=6\\ b=32\\ c=27$

The case a) is a quadratic equation

case b) $6x^{4} + 7x^{2} - 3 = 0$

The case b) is a grade $4$ polynomial

case c) $5x^{6} + x^{4} + 12 = 0$

The case c) is a grade $6$ polynomial

case d) $x^{9} + x^{3} - 10 = 0$

The case d) is a grade $9$ polynomial

therefore

the answer is

$6(x + 2)^{2} + 8x + 2 + 1 = 0$

4 0

3 years ago

Read 2 more answers

Find y and x intercept

Svetlanka [38]

-2x + 3y = 12
x intercept y = 0
-2x = 12
x = -6

y intercept x = 0
3y = 12
y = 4

answer
y intercept (0,4)
x intercept (-6,0)

3 0

4 years ago

A flying squirrel's nest is 6 meters high in a tree. From its nest, the flying squirrel glides 8 meters to reach an acorn that i

il63 [147K]

Answer:

2 meters

Step-by-step explanation:

7 0

3 years ago

mr lim gave $1200 to his mother. he then spent 3/5 of his remaining money on a computer. in the end he had 1/5 of his original a

Harlamova29_29 [7]

Let the original amount be x so ,
according to question,
3x/5 + 1x/5 + 1200 = x
or, 1200 = x - 4x/5
or, 1200 = 1x/5
or, x = 6000

5 0

3 years ago