All categories

3 years ago

Evaluate 11.3v + 10.7w when v=7 and w=8

Mathematics

1 answer:

Elina [12.6K]3 years ago

3 0

Answer:

164.7

Step-by-step explanation:

So if v= 7 and w=8, then the problem would become - 11.3 x 7 plus 10.7 x 8.

simplified, this would be 79.1 + 85.6, so add that and you should get 164.7

You might be interested in

What is the formula that relates circumference and radius?

posledela

C=2•pi•r because C= pi•d and d=2•r

3 0

4 years ago

Read 2 more answers

Graph the following piecewise function and then find the range.. help please!!!

kipiarov [429]

Parabola : @x =-4,6 make an empty bubble
Line : fill in bubble @x=6, empty bubble @x=9

6 0

4 years ago

Please help me with this question

wlad13 [49]

Answer:

-3

Step-by-step explanation:

Remember the following:

cos(x)=cos(x/2 + x/2) = cos(x/2)*cos(x/2) -sin(x/2)*sin(x/2)

cos(x)=cos2(x/2) - sin2(x/2)

We also know that sin2(a)+cos2(a)=1,

so sin2(x/2)=1 - cos2(x/2). obtained from previous step.

So, our first expression can be written as:

cos(x)=cos2(x/2)-1+cos2(x/2)

Where we obtain that: cos(x/2)= sqrt( 1+ cos(x))/ sqrt(2)

If we again use sin2(a)+cos2(a)=1, we will obtain the following relation:

sin(x/2)= sqrt(1-cos(x))/sqrt(2)

Next Tang(x/2)= sin(x/2) / cos(x/2)= sqrt(1-cos(x))/sqrt(1+cos(x))=

SQRT(9/1)=3

In the given range, cos(x), hence tan(x/2) is also negative

6 0

3 years ago

A car is traveling at a speed of 108 kilometers per hour. What is the cars speed in kilometers per minute? How many kilometers w

cluponka [151]

The distance travelled by the car will be 3.6km in 2 minutes.

<u>Explanation:</u>

Given:

Speed, s = 108 km/hr

s in km/min = ?

1 hr = 60 min

So,

108 km/hr = $\frac{108}{60} km/min$

= 1.8 km/min

time, t = 2 min

Distance, d = ?

We know:

distance = speed X time

$d = 1.8 X 2\\\\d = 3.6km$

Therefore, the distance travelled by the car will be 3.6km in 2 minutes.

6 0

3 years ago

Read 2 more answers

Jeremy has 9 roses. One-third of the roses are white. How many roses are white?

evablogger [386]

3 roses my guy........

6 0

3 years ago