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Alenkinab [10]
3 years ago
12

Joanne and Betty have a combined age of 60 years. If Joanne is 18 years old, how old is Betty?

Mathematics
2 answers:
denis23 [38]3 years ago
8 0

Answer:

42

Step-by-step explanation:

kirill115 [55]3 years ago
3 0

Answer:

42

Step-by-step explanation:

Let Joanne age be x

let betty age by y

. ° . x + y = 60

if joanne is 18

y = 18

x + 18 = 60

x = 60 - 18

x = 42

. ° . betty = 42

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The size of any video depends on resolution of video, FPS and Audio Quality too. Uncompressed 1080p video of is 120–130mb per minute average
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In what quadrant does the angle 9pi/ 5 terminate?
aev [14]

the angle 4pi/5 in quadrent 2

3 0
3 years ago
Read 2 more answers
Given that f(x)=x2-1 and g(x)=2x+8 find (g-f)(10)
irga5000 [103]

Answer:

<h2>(g-f)(10) = - 71</h2>

Step-by-step explanation:

f(x) = x² - 1

g(x) = 2x + 8

To find (g-f)(10) first find ( g - f)(x)

To find ( g - f)(x) subtract f(x) from g(x)

That's

( g - f)(x) = 2x + 8 - ( x² - 1)

Remove the bracket

( g - f)(x) = 2x + 8 - x² + 1

Simplify

( g - f)(x) = - x² + 2x + 9

To find (g-f)(10) substitute the value in the bracket that's 10 into ( g - f)(x)

That is

(g-f)(10) = -(10)² + 2(10) + 9

= - 100 + 20 + 9

= - 100 + 29

= - 71

Hope this helps you

7 0
3 years ago
A deli sells two types of sandwiches, tuna salad and BLT. The profit on the sandwiches is $1.50 for tuna and $2.50 for the BLT.
Korolek [52]
X = tuna, y = BLT

x + y = 30
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x = 10

20 BLTs for $2.50, 10 tuna for $1.50
7 0
3 years ago
Read 2 more answers
1 and 16/24 + 1 and 21/24
AlexFokin [52]

Answer:

turn into improper fractions

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work out how many times 24 goes into 85 to get back to a mixed number.

24 goes into 85 three times with 13 left over so the answer is

3 and 13/24

6 0
3 years ago
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