Please help i will give brainlest

Mathematics

1 answer:

kodGreya [7K]2 years ago

8 0

13.9

about 14 squares units

You might be interested in

7. There are approximately 1.2 x 108 households

Vikentia [17]

Answer:

the answer would be 35

Step-by-step explanation:

8 0

3 years ago

Evaluate the function f (x)  4 • 7x for x  1 and x = 2. Show your work

SashulF [63]

The function and the first value stated for x are confusing.

Doing some research, I found that the problem is to evaluate the function $f(x)=4.7^x$ for x = - 1 and x 2.

The solution is:

1) For x = - 1

$f(-1)=4. 7^{-1} =4. (1/7)=4/7$

2) For x = 2

$f(2)=4.7^2=4(49)=196$

5 0

2 years ago

A tunnel is in the shape of a parabola. The maximum height is 31 m and it is 13 m wide at the base as shown below.

yan [13]

Using the given values from the problem and the illustration, three points are known which are (0,0), (6.5,-31), (-6.5,-31). The first step in solving this problem is to determine the equation of the parabola.
y = ax²
-31 = a(6.5)²
-31 = 42.25a
a = -31/42.25
a = -124/169

Therefore, the equation of the parabola is y = (-124/169)x². The value 4.5 is then substituted in the equation as x to get the answer which is 16.14 meters.

6 0

2 years ago

Lester’s car can go 15.4 miles on 1 gallon of gas. How far can he go on 0.7 gallon?

MAVERICK [17]

Answer:

He can go 10.78 miles

Step-by-step explanation:

This problem can be solve by creating a proportion, knowing that 15.4 miles is to one gallon the same as "x" miles (our unknown) is to 0.7 gallons. This can be set in math terms as the equation that relates these two ratios of miles per gallon:

$\frac{15.4\,miles}{1\,gallon} =\frac{x }{0.7\,gallon}$