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jonny [76]
2 years ago
14

Select ALL the equations represented by this tape diagram.

Mathematics
2 answers:
BlackZzzverrR [31]2 years ago
4 0

Answer:

A, C, and D

Step-by-step explanation:

A is one answer because if you were to add 3.9 and the value of ?, you would get 8.6. The same would apply to C, just backwards because it is 8.6 = 3.9 + ?. Finally, D is another answer because if you subtract 3.9 from 8.6, you will get the value of ?.

stepladder [879]2 years ago
3 0

Answer:

I think A, C and D

fillerfillerfiller

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What is 3,700,000 in scientific notation??
lawyer [7]
<h3>Answer:    Choice D)  3.7 * 10^6</h3>

=========================================================

Explanation:

Place a decimal point between the first two digits 3 and 7.

Now ask yourself how you can go from 3.7 back to the original value. Notice we can move the decimal point 6 spots to the right to go from 3.7 back to 3,700,000

Therefore, the exponent over the 10 is 6. The exponent is positive to mean we move the decimal point to the right. If we had a negative exponent, then we'd move left.

You can use a calculator to confirm that 3.7 * 10^6 = 3,700,000

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Side notes:

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3,700,000 = 3.7 million

7 0
3 years ago
1. The table shows the probabilities of a response chocolate or vanilla when asking a child or adult. Use the formula for condit
Stels [109]
\begin{matrix}&\text{chocolate}&\text{vanilla}&\text{total}\\\text{children}&0.14&0.26&0.40\\\text{adults}&0.21&0.39&0.60\\\text{total}&0.35&0.65&1.00\end{matrix}

a. "Chocolate" and "Adults" (whatever those mean) will be independent as long as

P(\text{chocolate}\cap\text{adults})=P(\text{chocolate})\cdot P(\text{adults})

"Chocolate" has the marginal distribution given by the second column, with a total probability of P(\text{chocolate})=0.35. Similarly, "Adults" has the marginal distribution described by the third row, so that P(\text{adults})=0.60. Then

P(\text{chocolate})\cdot P(\text{adults})=0.35\cdot0.60=0.21

Meanwhile, the joint probability of "Chocolate" and "Adults" is given by the cell in the corresponding row/column, with P(\text{chocolate}\cap\text{adults})=0.21.

The probabilities match, so these events are indeed independent.

Parts (b) and (c) are checked similarly.

b. Yes;


P(\text{children})\cdot P(\text{chocolate})=0.40\cdot0.35=0.14
P(\text{children}\cap\text{chocolate})=0.14

c. Yes;

P(\text{vanilla})\cdot P(\text{children})=0.65\cdot0.40=0.26
P(\text{vanilla}\cap\text{children})=0.26
5 0
3 years ago
Using elimination to solving systems of linear equations how would you solve
Amiraneli [1.4K]
12x+y=10 -----> 12x + y = 10
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12x - 2 = 10
x = 1
8 0
3 years ago
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