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AleksandrR [38]
3 years ago
9

Gabriella wants to buy socks for $13. She gives the cashier $20. What is her change?​

Mathematics
1 answer:
pychu [463]3 years ago
7 0

Answer:

Gabriella has $7 in change.

Step-by-step explanation:

First minus $13 from $20.

Then get $7 left over.

Finally $7 is your awnser.

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X = – 2y – 1<br> x = – 5y + 5
motikmotik

Answer:

x = -5

y = 2

Step-by-step explanation:

x = – 2y – 1

= -x - 2y - 1

-x - 2y = 1

x = – 5y + 5

= -x - 5y + 5

-x - 5y = -5

-x - 2y = 1

-x - 5y = -5

___________--

3y = 6

y = 6/3

<u>y = 2</u>

-x - 2y = 1

-x - 2(2) = 1

-x - 4 = 1

-x = 1 + 4

-x = 5

<u>x = -5</u>

6 0
3 years ago
According to a poll, 30% of voters support a ballot initiative. Hans randomly surveys 5 voters. What is the probability that exa
VMariaS [17]

The probability that exactly 2 voters will be in favor of the ballot initiative is 0.309.

<h2>Given</h2>

Number of voters who support ballot initiative = 30 % = 0.30

Number of voters who does not support this initiative = 1 - 0.30 = 0.70

Number of voters selected for Surveying = 5

<h3>What is probability?</h3>

The probability of success and failure remain the same throughout the trials.

The probability that exactly 2 voters will be in favor of the ballot initiative is given by;

If P denotes Success and Q denotes failure;

\rm = ^{5}C_2 \times (0.3)^2 \times (0.70)^3\\\\= 10 \times 0.09 \times 0.343\\\\= 0.309

Hence, the probability that exactly 2 voters will be in favor of the ballot initiative is 0.309.

To know more about Probability click the link given below.

brainly.com/question/20344726

3 0
3 years ago
Simplify! Thank you so much if you help! This is urgent!!
Crank
The simplified form is 12x-40
4 0
3 years ago
Read 2 more answers
Sin5A-sin7A-sin4A+sin8A/cos4A-cos5A-cos8A +cos7A
Anna11 [10]
Sin1A/-cos1A=iddkkkk
5 0
3 years ago
Find the values of X and Y.
Natasha_Volkova [10]

Answer:

x = 90°

y = 43°

Step-by-step explanation:

We know that one angle equals 47°.

The two triangles are right triangles, so that makes x = 90°.

To find y, we add 90 + 47.

That would give us 137°.

All triangles add up to 180°.

180 - 137 = 43.

43° is the answer.

3 0
3 years ago
Read 2 more answers
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