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4 years ago

What's 7n-4=31? What's n=??

Mathematics

2 answers:

levacccp [35]4 years ago

7 0

Answer:

Step-by-step explanation:

solve for n. subtract 4 from 31 and you get 35 then divide 7 by 35 in order to get n which is 5.

sveticcg [70]4 years ago

4 0

Answer:

n=5

Step-by-step explanation:

You might be interested in

A car rental costs a fee of $150 plus $35 per

lutik1710 [3]

Answer:

5 hours

Step-by-step explanation:

We know that Joey spent a total of $325. He first paid the fee of $150. Let's subtract $150 from $325.

$325 - $150 = $175

Now, we know that it costs $35 per hour to rent the car. So, we divide $175 by $35 to find out how many hours Joey rented the car for.

$175 ÷ $35 = 5 hours

3 0

3 years ago

t hits the square dartboard shown below at a random point. Find the probability that the dart lands in the shaded circular regio

masha68 [24]

Given:

Required:

To find the probability that the dart land will be in the shaded region.

Explanation:

Area of the circle is given by the formula:

$A=\pi r^2$

Where r = radius

Thus the area of the circular region

$\begin{gathered} =(3.14)\times(2)^2 \\ =3.14\times4 \\ =12.56\text{ square in.} \end{gathered}$

The area of the square is given by the formula:

$=(side)^2$

Thus the area of the given square

$\begin{gathered} =(6)^2 \\ =36\text{ square in.} \end{gathered}$

The probability of an event is given by the formula:

$P=\frac{number\text{ of possible outcomes}}{Total\text{ number of outcomes}}$

The probability that the dart land will be in the shaded region

$=\frac{Area\text{ of the shaded region}}{Area\text{ of the square}}$

Thus probability

$\begin{gathered} P=\frac{12.56}{36} \\ P=0.3488 \\ P=0.349 \end{gathered}$

Final answer:

Thus the probability that the dart land will be in the shaded region is 0.349.

6 0

1 year ago

1/6 of a loop around the circle would be a rotation of how many degrees (q)?

Verizon [17]

Answer:

Step-by-step explanation:

A circle is 360 degrees

1/6 of 360

1/6 * 360 = 60

6 0

3 years ago

On the day their child was born, her parents deposited $25,000 in a savings account that earns 11% interest annually. How much i

tankabanditka [31]

Total = Principal * (1 + rate)^years
Total = 25,000 * (1.11)^16
Total = 25,000 * 5.3108943321 
Total = 132,772.36 
 (This is the second answer)

3 0

3 years ago

Tan A+ Tan (90-A) = secA .sec (90-A)

sergeinik [125]

Answer:

see explanation

Step-by-step explanation:

Using the cofunction identities

tan(90 - A) = cotA and cscA = sec(90- A)

Consider the left side

tanA + tan(90 - A)

= tanA + cotA

= $\frac{sinA}{cosA}$ + $\frac{cosA}{sinA}$

= $\frac{sin^2A+cos^2A}{cosAsinA}$

= $\frac{1}{cosAsinA}$

= $\frac{1}{cosA}$ × $\frac{1}{sinA}$

= secA × cscA

= secA. sec(90 - A) = right side ⇒ verified

6 0

3 years ago