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jeyben [28]
3 years ago
14

If it rains 40% of the days in April, how many days will it rain? (HOW DID YOU GET YOUR ANSWER. PLEASE SHOW WORK!! ONLY ANSWER I

F YOU SHOW ON HOW YOU GOT YOUR ANSWER!!!)
A. 12
B. 1/169
C. 11 1/8
D. 60%
E. 0.5
F. 2/112
G. 25%
H. 0.25
I. 25
Mathematics
2 answers:
Simora [160]3 years ago
6 0

9514 1404 393

Answer:

  A.  12

Step-by-step explanation:

"Of" means "times" when you're talking about percentages. 40% of 30 means 40% times 30:

  40% × 30 = 40/100 × 30 = 1200/100 = 12

40% of 30 days is 12 days

_____

In general "%" and "/100" are interchangeable. They mean the same thing.

Marat540 [252]3 years ago
3 0

Step-by-step explanation:

40% of 30 dsys =12 by dividing

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Solve the equation using square roots.
Virty [35]

Answer: LAST OPTION.

Step-by-step explanation:

1. You have the following equation:

6x^{2}=54

2. Then you must solve for x, as following:

x^{2}=54/6\\x^{2}=9\\x=\sqrt{9}\\x=+/-3

Therefore, as you can see above, the answer for the exercise is the last option.

7 0
3 years ago
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A 15 ft ladder makes a 52° angle with the ground. How far will the top of the ladder be above the ground.
levacccp [35]

Answer:

11.820 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that ...

Sin = Opposite/Hypotenuse

The length of the ladder is the hypotenuse of a right triangle with 52° as the base angle. The side opposite is the height up the building where the top of the ladder rests. So, you have the relation ...

sin(52°) = height/(15 ft)

Multiplying by the denominator gives you ...

height = (15 ft)·sin(52°) ≈ 11.820 ft

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You may need to round this number appropriately.

5 0
3 years ago
What is the surface area of a triangular pyramid if each face has an area of 30 mm2?
coldgirl [10]
The answer must be 120\quad m{ m }^{ 2 } since the triangular pyramid has 4 faces and each has an area of 30 m{ m }^{ 2 } we should multiply that by 4 , so :

4\cdot 30\quad m{ m }^{ 2 }=\quad 120\quad m{ m }^{ 2 }
7 0
3 years ago
Read 2 more answers
Please help!! ASAP
Kryger [21]

Answer:

The answer is 117.3 in^{3}.

Step-by-step explanation:

To solve for the volume of the cone, use the cone volume formula, which is   V = \frac{1}{3} \pi  r^{2} h.

Next, plug in the information given from the problem, and the formula will look like V = \frac{1}{3} (\pi) (4 in^{2}) (7 in).

Then, solve the equation, and the answer will be 117.3 in^{3}.

6 0
3 years ago
(3,4) and (12,19) find the equation of the line that passes through it
harina [27]

Answer:

The equation of the line will be:

y=\frac{5}{3}x-1

Step-by-step explanation:

Given the points

  • (3, 4)
  • (12, 9)

Finding the slope between (3, 4) and (12, 9)

\left(x_1,\:y_1\right)=\left(3,\:4\right),\:\left(x_2,\:y_2\right)=\left(12,\:19\right)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

m=\frac{19-4}{12-3}

m=\frac{5}{3}

The equation of the line can be obtained using the point-slope form of the equation of the line

y-y_1=m\left(x-x_1\right)

substituting the values m = 5/9 and the point (3, 4)

y-4=\frac{5}{3}\left(x-3\right)

y-4+4=\frac{5}{3}\left(x-3\right)+4

y=\frac{5}{3}x-1

Therefore, the equation of the line will be:

y=\frac{5}{3}x-1

5 0
3 years ago
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