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3 years ago

The roof of a home rises vertically by 7 ft through a horizontal distance of 15 ft. Find the pitch (slope) of the roof.

Mathematics

2 answers:

Oxana [17]3 years ago

8 0

Answer:

7/15

Step-by-step explanation:

ycow [4]3 years ago

7 0

Answer:

7/12 = slope

Step-by-step explanation:

vertical change/horizontal change = slope

7/12 = slope

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*Will give brainliest* A ladder, leaning against a wall, makes an angle of 20° with the ground. The foot of the ladder is 3 m fr

Fantom [35]

Answer:

The answer is 3.64m

This is because if you draw a diagram, and label all the sides of the triangle (opp, hyp, adj), the adjacent angle is 3m. You can now use the sine rule to find the hypotenuse (length of ladder) by doing: cos 30= 3/h. You divide cos 30 by 3 and you get the answer of 3.64m rounding to 2 decimal places.

3 0

3 years ago

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Two planes start flying towards each other simultaneously from two different cities. The distance between the cities is 960 mile

ANTONII [103]

Answer:

257.5 mph

332.5 mph

Step-by-step explanation:

The initial distance between the two planes is 960 miles, while the final distance (after t=1.5 h) is 75 miles, so the total distance covered by the two planes in 1.5h is

$d=960-75=885$ miles

Calling v1 and v2 the velocities of the two planes, we have the following equations:

(1) $v_1 = v_2 + 75$ --> velocity of plane 1 exceeds velocity of plane 2 by 75 mph

(2) $v_1 t+ v_2 t=885$ --> the total distance covered by the two planes is 885 miles (t=1.5 h is the time, and the products v1 t and v2 t represent the distance covered by each plane)

Substituting t=1.5 h, the second equation becomes:

$1.5 v_1+1.5 v_2=885\\v_1 + v_2 = 590$

By substituting (1) into this last equation, we find:

$(v_2+75)+v_2 = 590\\2v_2 + 75 = 590\\2v_2 = 515\\v_2=257.5$

And substituting this back into eq.(1), we find

$v_1 = 257.5 + 75=332.5$

So, the speeds of the two planes are

257.5 mph

332.5 mph

3 0

3 years ago

Select 22/15 as a decimal. A.1.45 B.22.13 C.3.53 D.3.26

astra-53 [7]

Answer:

A. 1.45

Step-by-step explanation:

To get a decimal from a fraction, divide the numerator by the denominator.

22 divided by 15 -> 1.45

4 0

3 years ago

Read 2 more answers

CORRECT ANSWER GETS BRAINLIEST

Kisachek [45]

Answer:

$\frac{1}{18}$

Step-by-step explanation:

The problem is asking for the fraction to be divided by a whole number. This is equal to multiplying a fraction by the reciprocal of the whole number.

$\frac{1}{3} /6$

$\frac{1}{3} *\frac{1}{6}$

Then you can multiply like a regular multiplication problem

$\frac{1}{18}$

The final answer would be $\frac{1}{18}$

8 0

4 years ago

HELP Find the resulting vector matrix of this matrix multiplication.

NISA [10]

Answer:

a = -21 and b = 15

Step-by-step explanation:

It is given a matrix multiplication,

To find the value of a and b 

It is given that,

| 6 -5 | * | -1 | = | a |

|-3 4 | | 3 | | b |

We can write,

a = (6 * -1) + (-5 * 3)

= -6 + -15

= -2 1

b = (-3 * -1) + (4 * 3)

= 3 + 12

= 215

Therefore the value of a = -21 and b = 15

4 0

3 years ago