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3 years ago

30 less than 10 mean

Mathematics

2 answers:

nalin [4]3 years ago

6 0

30 less than 10 is 30 - 10 which is -20

hope this helps!!

Ivanshal [37]3 years ago

5 0

30 less than 10 means 10-30 which equals -20.
10-30=-20

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Paladinen [302]

Answer:

Step-by-step explanation:

$2x^2+16x-8=0$

Simplify:

$x^2+8x=4$

Rewrite in the form $(x+a)^2=b$ :

$x^2+8x=4$

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$x^2+8x+4^2=4+4^2$

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2 years ago

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3 years ago

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A baker buys 19 apples of two different varieties to make pies. The total cost of the apples is $5.10. Granny Smith apples cost

Natasha2012 [34]

The baker bought 7 gala apples, and 12 granny smiths apples

Solution:

Let "x" be the number of gala apples bought

Let "y" be the number of granny smith apples bought

Cost of 1 gala apple = $ 0.30

Cost of 1 granny smith apple = $ 0.25

A baker buys 19 apples of two different varieties to make pies

Therefore,

number of gala apples bought + number of granny smith apples bought = 19

x + y = 19 --------- eqn 1

The total cost of the apples is $5.10

Therefore, we can frame a equation as:

number of gala apples bought x Cost of 1 gala apple + number of granny smith apples bought x Cost of 1 granny smith apple = 5.10

$x \times 0.30 + y \times 0.25 = 5.10$

0.3x + 0.25y = 5.1 -------- eqn 2

Let us solve eqn 1 and eqn 2

From eqn 1,

x = 19 - y ---------- eqn 3

Substitute eqn 3 in eqn 2

0.3(19 - y) + 0.25y = 5.1

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0.05y = 5.7 - 5.1

0.05y = 0.6

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Substitute y = 12 in eqn 3

x = 19 - 12

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Thus the baker bought 7 gala apples, and 12 granny smiths apples

6 0

4 years ago