1 year ago

Simplify the algebraic expression by combining like terms. -7x² +19x² Simplify your answer.

Mathematics

1 answer:

enot [183]1 year ago

4 0

Wouldn’t u just subtract 7 from 19 since they have the same variable

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Kate and David each have $10. Together they flip a coin 5 times. Every time the coin lands on heads, Kate gives David $1. Every

olga55 [171]

Answer:

4 possible ways this could happen

Step-by-step explanation:

1. $11

2. $12

3. $13

4. $14

hope this was helpful

8 0

3 years ago

Need help ASAP (You dont have to show work, just answer it)

anyanavicka [17]

Answer:

$50.40 is the answer

Step-by-step explanation:

12% of 45 is 5.40 so if we add $5.40 and $45 we get $50.40

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2 years ago

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A room has 9 tables with 6 chairs each and 7 tables

lora16 [44]

Answer:

110

Step-by-step explanation:

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2 years ago

There are some sweets in a bag 18 of the sweets are toffees and 12are mints write down the ratio of them in the simplest form

weeeeeb [17]

Answer:

3:2

Step-by-step explanation:

18:12

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8 0

3 years ago

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What is the value of log 43? Use the calculator. Round your answer to the nearest tenth.

Bad White [126]

Answer:

The value of log 43is 1.633

Step-by-step explanation:

Explanation:

Suppose you know that:

$\begin{array}{l}{\log 2 \approx 0.30103} \\{\log 3 \approx 0.47712}\end{array}$

Then note that:

$43=\frac{129}{3} \approx \frac{128}{3}=\frac{2^{7}}{3}$

$\log 43 \approx \log \left(\frac{2^{7}}{3}\right)=7 \log 2-\log 3 \approx 7 \cdot 0.30103-0.47712=1.63009$

We know that the error is approximately:

$\log \left(\frac{129}{128}\right)=\log 1.0078125=\frac{\ln 1.0078125}{\ln 10} \approx 0.00782 .3=0.0034$

So we can confidently give the approximation:

$\log 43 \approx 1.633$

6 0

2 years ago