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Nina [5.8K]
2 years ago
9

Q · 7/9 = 4 What is q?

Mathematics
1 answer:
FrozenT [24]2 years ago
4 0

Answer:

q = 36/7  or 5 1/7

Step-by-step explanation:

q · 7/9 = 4

Multiply each side by 9/7

q · 7/9 *9/7 = 4*9/7

q = 36/7

If we want it as a mixed number instead of an improper fraction

7 goes into 36 5 times with 1 left over

q = 5 1/7

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it's 8-3m

Step-by-step explanation:

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Convert Зcis 180° to rectangular form.<br> А. -3<br> в. -3i<br> с. з<br> D. Зі.
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Answer:

-3

Step-by-step explanation:

3 cis(180^\circ) means 3(\cos(180^\circ)+i \sin(180^\circ))

What is the x-coordinate value that corresponds to \theta=180^\circ. That value is -1.

What is the y-coordinate value that corresponds to \theta=180^\circ. That value is 0.

So this implies \cos(180^\circ)=-1 \text{ and } \sin(180^\circ)=0.

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5 0
3 years ago
$10,000 at an annual rate of 7%, compounded semi-annually, for 2 years
forsale [732]

Answer:

\$13,107.96

Step-by-step explanation:

Since interest is compounded semi-annually (half a year or 6 months), in a spawn of 2 years, the interest will have been compounded 4 times. As given in the problem, each time the interest is compounded, the new balance will be 107% or 1.07 times the amount of the old balance.

Therefore, we can set up the following equation to find the new balance after 2 years:

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8 0
2 years ago
What is 6.564671128 x 10^-7 meters converted into nanometers?
fomenos

Answer:

656.4671128 nanometer

Step-by-step explanation:

1 nano meter = 10 ^-9 meter

Now given 6.564671128 × 10^ -7 meters

so in nano meter ,

\frac{6564671128 times 10^-7}{10^9}

= 656.4671128 × 10^-9 meter

= 656.4671128 nanometer    Answer

3 0
3 years ago
Identify each of the following variables as categorical or quantitative. a. Noise levels in a city (in decibels )b. Dream vacati
Colt1911 [192]

Answer:

a. Quantitative variable.

b. Categorical variable.

c. Categorical variable.

d. Quantitative variable.

Step-by-step explanation:

Categorical variables are usually labels or words that describe a property.

Quantitative variables are countable numeric values and represent some sort of measurement. (Note that numbers can also be categorical variable if they are used to simply label something instead of providing numeric value.)

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Represents the amount of noise in a countable quantity, Quantitative variable.

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