2 years ago

Claire has $18. She wants to buy a book and magazine. The book costs $13.28. How much can Claire spend on a magazine?

Mathematics

1 answer:

dedylja [7]2 years ago

7 0

Claire can spend $4.72 on a magazine

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What is the sST for the data set (1, 5), (2, 8), (4, 14)? 14 42 25 9

ohaa [14]

Answer:

Step-by-step explanation:

SST = ∑ ( y − ¯ y ) ² (¯ y = mean of y values)

¯ y = (5+8+14)/3 = 27/3 = 9

∑ ( y − ¯ y ) ² = ( 5 − 9 ) ² + ( 8 − 9 ) ² + ( 14 −9 ) ²

= ( − 4 ) ² + ( − 1 ) ² + ( 5 ) ²

= 16 + 1 + 25

= 42

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2 years ago

A rabbit can run short distances at a rate of 35 miles per hour . A fox can run short distances at a rate of 21 miles per half h

Veronika [31]

The rabbit is faster by 14 mph.
35-21=14

Hope my answer helped you :)

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2 years ago

Miguel tells his teacher1/5 is the same as 20%. Which best justifies Miguel’s answer? a.5 goes into 100 twenty times, so 20% is

svetoff [14.1K]

Answer:

C. 5 goes into 100 twenty times, and 1 times 20 is 20

Step-by-step explanation:

Since, we know that when we multiply both numerator and denominator of a fraction by a same number then we obtain an equivalent fraction,

Here, the given fraction,

$\frac{1}{5}$

By the above statement,

$\frac{1}{5}=\frac{1\times 20}{5\times 20}=\frac{20}{100}$

Now,

$a\%=\frac{a}{100}$

$\implies \frac{20}{100}=20\%$

Hence,

$\frac{1}{5}=20\%$

Option C is correct.

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2 years ago

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What is the simplified expression for

kiruha [24]

5/2 should be as simplified as it can get. Hope this helps!

6 0

3 years ago

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x + 3y = 7 x - 3y = 1 Solve the system of equations. A) x = 4, y = 1 B) x = 1, y = 4 C) x = - 2 3 , y = 3 D) x = 3, y = - 2 3

Alik [6]

X+3y=7
x-3y=1
add them together

x+3y=7
x-3y=1 +
2x+0y=8

2x=8
divide 2
x=4
subsitute
x+3y=7
4+3y=7
subtract 4
3y=3
divid 3
y=1

x=4
y=1

answer is A

6 0

3 years ago

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