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Elza [17]
2 years ago
6

Use a calculator to find the value of these data. Round the value to three

Mathematics
1 answer:
insens350 [35]2 years ago
6 0

Answer:

-1, -1.1, 0.9, 1

Step-by-step explanation:

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Nicole sold 1 cherry pie and 9 pumpkin pies for $60. Lisa sold 11 cheery pies and 4 pumpkin pies for $90. what's the cost each o
zubka84 [21]
X= cost per cherry pie
y= cost per pumpkin pie

NICOLE
1x + 9y= $60

LISA
11x + 4y= $90


STEP 1
multiply Nicole's equation by -11

-11(1x + 9y)= -11($60)
multiply -11 by all terms

(-11 * x) + (-11 * 9y)= (-11 * 60)

-11x - 99y= -660


STEP 2
add Nicole's new equation from step 1 to Lisa's equation to solve for y (using the elimination method)

-11x - 99y= -660
11x + 4y= 90
the x terms "cancel out"

-95y= -570
divide both sides by -95

y= $6 per pumpkin pie


STEP 3
substitute y value into either original equation to solve for x

x + 9y= $60

x + 9(6)= 60

x + 54= 60
subtract 54 from both sides

x= $6 per cherry pie


CHECK
11x + 4y= $90
11(6) + 4(6)= 90
66 + 24= 90
90= 90


ANSWER: Each cherry pie costs $6 and each pumpkin pie costs $6.

Hope this helps! :)
3 0
3 years ago
3(h - 7) + 3 = 9 what is H =
MrRissso [65]

Answer:

9

Step-by-step explanation:

3(h-7)+3=9

3h-21+3=9

3h-18=9

3h=9+18

3h=27

h=27/3

h=9

Please mark me as Brainliest if you're satisfied with the answer.

7 0
3 years ago
Read 2 more answers
Linear equation 1/2X+Y=6
krek1111 [17]
You can graph it but cant answer it because there is two variables so try and change it to slope intercept form do you know how ???????

5 0
3 years ago
Prove this trigonometric identity<br>sin ​3x/sin x - cos 3x/cos x =2
Sveta_85 [38]

Step-by-step explanation:

LHS= sin 3x/sin x - cos 3x/cosx

Taking LCM,

<u>=</u><u>sin3xcosx- cos3xsinx</u>

sinxcosx

<u>=</u><u>sin(3x-x)</u>

sinxcosx

= <u>2sin2x</u>

2sinxcosx

=<u> </u><u>2sin2x</u><u> </u>

sin2x

=2

= RHS.

Proved.

8 0
3 years ago
Marge correctly guessed whether a fair coin turned up "heads" or "tails" on six consecutive flips. What is the probability that
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There is a 50% chance
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2 years ago
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