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faltersainse [42]
2 years ago
13

Helen has only $10 and $2 bills with her.

Mathematics
2 answers:
olchik [2.2K]2 years ago
8 0

Answer:

i think it is d

Step-by-step explanation:

sp2606 [1]2 years ago
8 0

Answer:

2 and 5

Step-by-step explanation:

10x + 2y = 30

x = 2

y = 5

10(2)+2(5) = 30

20+10 = 30

30=30

-Gage Millar, Algebra 2 tutor

You might be interested in
Please show work! Please and thank you!
My name is Ann [436]
Question 5(A)
Answer:51
Explanation
Step 1:evaluate the power
Step2:add the numbers
Step 3:calculate the square root
Step4:reduce the fraction with 4
Step5:calculate the sum or the difference and ur final answer is 51

Question 5(B)
Answer:9/2
Explanation:
Step 1:calculate the difference
Step 2:evaluate the power
Step 3:subtract the numbers
Step 4:calculate the sum
And ur final answer is 9/2

Question 6:(A)
Answer:x=36/11
Explanation:
Step 1:distribute 4 through the parentheses
Step 2:move variable to the left hand side and change its sign
Step 3:move constant to the right hand side and Change it’s sign
Step 4:collect like items
Step 5:add the numbers
Step 6:divide both sides of the equation by 11
And ur final answer is x=36/11

Question 6(B)
Answer:x=192
Explanation:
Step 1:multiply both sides of the equation by 3
Step 2:move the constant to the right hand side and change its sign
Step 3:add the numbers
And ur final answer is x=192

Question 7
Answer B($60)
Explanation:the shape is rectangular and it is 12 feet long and the other is 5 feet wide it’s like finding the area of it so u basically need to multiply 12 by 5 and ur answer is 60

Here is the answers and the explanations step by step I hope it helps
Have a great day and stay safe

6 0
3 years ago
Solve and i give brainliest
Temka [501]

Answer:

0.25

Step-by-step explanation:

-9/6 divided by 3/-2 = 0.25

i am sorry

4 0
2 years ago
Read 2 more answers
Factor the expression.<br> x squared-25
grin007 [14]
X2<span> - 25 = x</span>2<span> - 5</span>2<span> = (x - 5)(x + 5)

</span>
4 0
3 years ago
If the sudent has grades of 62,67,75, and 89 what is the student's grade befire taking the final exam?
MrMuchimi

Answer:

73.25

Step-by-step explanation:

Add all numbers and divide by 4 to get the average grade.

3 0
3 years ago
Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.
oksian1 [2.3K]

Answer:

0.36 = 36% probability that the land has oil and the test predicts it

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

45% chance that the land has oil.

This means that P(A) = 0.45

He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil.

This means that P(B|A) = 0.8

What is the probability that the land has oil and the test predicts it?

This is P(A \cap B). So

P(B|A) = \frac{P(A \cap B)}{P(A)}

P(B \cap A) = P(B|A)*P(A) = 0.8*0.45 = 0.36

0.36 = 36% probability that the land has oil and the test predicts it

5 0
2 years ago
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