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3 years ago

How does knowing the double 6+6=12 help solve the near double 6+7=13?

Mathematics

1 answer:

Yakvenalex [24]3 years ago

7 0

Because, if 6 + 6 = 12, then in 6 + 7, 7 can be splitted into 6 + 6 + 1, and so you find it easier...!!

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9) Find the equation of a mirror line to the points Q (1,2) and Q1 (-1,2)<br><br>

Harman [31]

Answer:

x = 0

Step-by-step explanation:

Q(1, 2 ) and Q1(- 1, 2 ) are both 1 unit from the y- axis

Q is 1 unit to the right of the y- axis and Q1 is 1 unit is 1 unit to the left of the y-axis, thus

The y- axis is the mirror line with equation x = 0

8 0

4 years ago

2. A medical study tests a new cough medicine on 4250 people. It is effective for 3982 people. What is the experimental probabil

Nutka1998 [239]

Answer:

For a 9000 people, the approximate number of people for whom the medicine will be effect is 8432 people

Step-by-step explanation:

Here we have probability is given by

Probability = $\frac{Number\, of \, Success}{Number\, of \, Trials}$ Where:

Number of success = 3982 and

Number of trials = 4250. therefore;

$Probability \, of \, Success = \frac{3982}{4250} = \frac{1991}{2125}$

Therefore, when the medicine is used on 9000 people, the approximate number of people for whom the medicine will be effect is given by;

$\frac{1991}{2125} = \frac{x}{9000} \rightarrow x \times2125 = 1991 \times 9000\\x = \frac{1991 \times 9000}{2125} = \frac{143352}{17} = 8432\frac{8}{17}$

or ≈ 8432 people.

3 0

3 years ago

Tiffany spent 3/5 of her money to buy begonias and 1/2 of the remaining money to buy peas. What part of her money did she spend

Rufina [12.5K]

Answer:

Tiffany spent 1/5 of her money on peas.

Step-by-step explanation:

5/5 is the whole.

She spent 3/5 so now you only have 2/5 left.

1/2 of 2/5 is 1/5.

So she spent 1/5 of her money on peas.

6 0

3 years ago

Which shows the expression in the simplest form

Brut [27]

4x+3 because you divide the number of each

5 0

3 years ago

Read 2 more answers

Use the change of base formula to find log14, 18. Round to the nearest hundredth.

marin [14]

Answer:

Solution of the expression is 1.07

Step-by-step explanation:

The given logarithmic expression is $log_{14}18$

Since change of base formula says, $log_{b}(a)=\frac{log_{10}(a)}{log_{10}(b)}$

Therefore, the given expression can written as $\frac{log_{10}(18)}{log_{10}14}$ by using change of base formula.

Now $\frac{log_{10}(18)}{log_{10}(14)}=\frac{1.2253}{1.1461}$

= 1.069

≈ 1.07

Therefore, solution of the expression will be 1.07

3 0

4 years ago