All categories

3 years ago

Pls help me on this question

Mathematics

1 answer:

Maksim231197 [3]3 years ago

7 0

The answer is selections 1 and 4

You might be interested in

1. The side view of Mrs. Marigold's roof on her house

Ostrovityanka [42]

Answer:

The height of Mrs. Marigold's roof is 10 feet.

Step-by-step explanation:

Given that,

Base of the given triangle = 48 ft

Hypotenuse = 26 ft

Half of the base = 24 ft

Using Pythagoras theorem,

$h=\sqrt{26^2-24^2}\\\\h=10\ ft$

So, the height of Mrs. Marigold's roof is 10 feet.

7 0

3 years ago

Rewrite the function by completing the square. f(x)= x^{2} -9 x +14f(x)=x 2 −9x+14

Bess [88]

Answer:

$f(x)=(x-4.5)^{2}-6.25$ or $f(x)=(1/4)(2x-9)^{2}-6.25$

Step-by-step explanation:

we have

$f(x)=x^{2}-9x+14$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$f(x)-14=x^{2}-9x$

Complete the square. Remember to balance the equation by adding the same constants to each side

$f(x)-14+4.5^{2}=x^{2}-9x+4.5^{2}$

$f(x)+6.25=x^{2}-9x+4.5^{2}$

Rewrite as perfect squares

$f(x)+6.25=(x-4.5)^{2}$

$f(x)=(x-4.5)^{2}-6.25$

$f(x)=(1/4)(2x-9)^{2}-6.25$

5 0

3 years ago

It takes an airplane 5/12 of a minute to fly 3/4 of a mile. What is the airplanes speed per minute?

Nikitich [7]

To make this a little easier, you would want to turn 3/4 into 9/12, to match 5/12's denominator.

You would then just add 7/1 to both fractions

(5/12+7/1=12/12 or 1 minutes)
(9/12+7/1=16/12=1 1/3)

So your answer would be 1.333... miles per minute

Hope this helps

7 0

3 years ago

Hay tres paralelos para el curso de cálculo diferencial y tres paralelos para algebra lineal. Un estudiante desea tomar ambos cu

Lelu [443]

Answer:

mi español no es tan bueno si hay algún error en esto entonces lo siento

cursos en diferencial = a, b, c

cursos de álgebra = p, q, r

conjunto de estudiantes tomando ambos = {(a, p), (a, q), (a, r), (b, p), (b, q), (b, r), (c,p),(c,q),(c,r)}.

Step-by-step explanation:

márcame como el más inteligente

7 0

3 years ago

-2x + 3y = 1

Andre45 [30]

Answer:

-2x+3y =1.......(1)

y=3x-9........(2)

Now,

putting the value of y in equation (1),

-2x+3(3x-9)=1

or,-2x+9x-27=1

or,7x-27=1

or,7x=28

x= 4

Now putting the value of X in equation (2),

y=3×4-9

= 12-9

(x,y)=(4,3)

6 0

3 years ago