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3 years ago

6

A construction crew is lengthening a road. Let L be the total length of the road (in miles). Let D be the number of days the cre

w has worked. Suppose that L=2D+200 gives L as a function of D. The crew can work for at most 90 days.

1 answer:

Inessa05 [86]3 years ago

7 0

L = 54 + 2d d represents the number of days

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What is: 7x + 1.8 + 2.2 = 30<br><br> Step-by-step explanation pls! :)

Paha777 [63]

The answer is 3.71
First u add 1.8 and 2.2 and get 4. Then u subtract 30 by the 4 u got. Finally u divide 26 by 7 and get x = 3.71 :)

7 0

3 years ago

How much feet will it require to make 1.5 yards?

swat32

1 yard is equal to 3 feet
3÷2=1.5
1.5+3=4.5 feet

1.5 yards= 4.5 feet

Hope this helps!

3 0

3 years ago

Could someone explain a). There is an attachment

Anna [14]

All of these angles can be compared to each other.

There are:

- Alternate interior angles

-- Angles that share one line and two parallel lines and are less than 90 degrees (angles 10, 12). These angles are equal to each other.

- Alternate exterior angles

-- Angles that share one line and two parallel lines and are more than 90 degrees (angles 1,5) These angles are equal to each other.

- Vertical Angle

-- Angles that share a point and are opposite of that point (angles 2,3) These angles are equal to each other.

-Supplementary angles

-- Angles that are on the same side of one line and share the side of another (angles 9,10). These angles are always equal to 180 degrees.

Using this we know:

a. m of angle 5 = to the m of angle 3 = 102

m of angle 5 = 102 degrees

3 0

3 years ago

Given f(x) =17 -x2 what is the average rate of change in f(x) over the interval [1,5]

Artist 52 [7]

By definition <span>the average rate of change is given by:
</span> $AVR = \frac{f(x2) - f(x1)}{x2-x1}$
<span>We have the following function:
</span> $f(x) =17 - x^2$
We evaluate the function for the given interval:
For X = 1:
$f(1) =17 - 1^2$
$f(1) =17 - 1$
$f(1) =16$
For X = 5:
$f(5) =17 - 5^2$
$f(5) =17 - 25$
$f(5) =-8$
Then, replacing values we have:
$AVR = \frac{-8 - 16}{5-1}$
$AVR = \frac{-24}{4}$
$AVR = -6$
Answer:
<span>the average rate of change in f(x) over the interval [1,5] is:
</span> $AVR = -6$

6 0

4 years ago

Cho tam giác ABC vuông ở A có AB=12 cm, AC=5cm

tensa zangetsu [6.8K]

English pls coz I don’t understand

7 0

3 years ago