1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Trava [24]
2 years ago
10

2. Write an algebraic expression for the total number of minutes in h hours and 20 minutes.

Mathematics
1 answer:
elixir [45]2 years ago
7 0

Answer:

The expressions are:

2. 60h+20\ minutes

3. 2+\frac{x}{60}\ hours

4. y+0.75\ hours

Step-by-step explanation:

The given expressions have to be converted into algebraic expressions.

So,

2. Write an algebraic expression for the total number of minutes in h hours and 20 minutes.

Here,

h is a variable that can have any value but the 20 minutes will remain same with any number of hours.

If h is for hour, the number of minutes in h hours will be: 60*h = 60h

And there are also 20 minutes so the algebraic expression is:

60h+20\ minutes

3. Write an algebraic expression for the total number of hours in 2 hours and x minutes.

In order to convert minutes into hour, the minutes are divided by 60

So converting x minutes into hour means

x\ minutes = \frac{x}{60}\ hours

There are 2 hours already so the expression will be:

2+\frac{x}{60}\ hours

4. Write an algebraic expression for the total number of hours in y hours and 45 minutes.

Converting 45 minutes to hours by dividing by 60

45\ minutes = \frac{45}{60}\ hours = 0.75\ hours

The expression is:

y+0.75\ hours

Hence,

The expressions are:

2. 60h+20\ minutes

3. 2+\frac{x}{60}\ hours

4. y+0.75\ hours

You might be interested in
7.3 as a mixed number simlified
joja [24]
Answer: 7 3/10
seven as a whole number, and .3 equals to 3/10 when converted
8 0
3 years ago
Which holds more a half gallon or a 2 liter bottle
yKpoI14uk [10]
A 2 liter bottle would hold more.
4 0
3 years ago
Read 2 more answers
6x^2 + 3x - 1 =0 Use the Quadratic Formula to solve for X
Citrus2011 [14]
The answer is :x=3±√3312x=3±3312x≈0.72871355,−0.22871355
Use the quadratic formula to find the solutions.<span><span><span><span>−b</span>±<span>√<span><span>b2</span><span><span>−4</span><span>(<span>ac</span>)</span></span></span></span></span><span>2a</span></span><span><span><span>-⁢b</span>±<span><span>b2</span><span><span>-4</span>⁢<span>a⁢c</span></span></span></span><span>2⁢a</span></span></span>Substitute the values <span><span>a=6</span><span>a=6</span></span>, <span><span>b=<span>−3</span></span><span>b=<span>-3</span></span></span>, and <span><span>c=<span>−1</span></span><span>c=<span>-1</span></span></span> into the quadratic formula and solve for <span>xx</span>.<span><span><span>3±<span>√<span><span><span>(<span>−3</span>)</span>2</span><span><span>−4</span>⋅<span>(<span>6⋅<span>−1</span></span>)</span></span></span></span></span><span>2⋅6</span></span><span><span>3±<span><span><span>-3</span>2</span><span><span>-4</span>⋅<span>6⋅<span>-1</span></span></span></span></span><span>2⋅6</span></span></span>Simplify.Tap for less steps...Simplify the numerator.Tap for less steps...Raise <span><span>−3</span><span>-3</span></span> to the power of <span>22</span> to get <span>99</span>.<span><span>x=<span><span>3±<span>√<span>9<span><span>−4</span>⋅<span>(<span>6⋅<span>−1</span></span>)</span></span></span></span></span><span>2⋅6</span></span></span><span>x=<span><span>3±<span>9<span><span>-4</span>⋅<span>6⋅<span>-1</span></span></span></span></span><span>2⋅6</span></span></span></span>Multiply <span>66</span> by <span><span>−1</span><span>-1</span></span> to get <span><span>−6</span><span>-6</span></span>.<span><span>x=<span><span>3±<span>√<span>9<span><span>−4</span>⋅<span>−6</span></span></span></span></span><span>2⋅6</span></span></span><span>x=<span><span>3±<span>9<span><span>-4</span>⋅<span>-6</span></span></span></span><span>2⋅6</span></span></span></span>Multiply <span><span>−4</span><span>-4</span></span> by <span><span>−6</span><span>-6</span></span> to get <span>2424</span>.<span><span>x=<span><span>3±<span>√<span>9+24</span></span></span><span>2⋅6</span></span></span><span>x=<span><span>3±<span>9+24</span></span><span>2⋅6</span></span></span></span>Add <span>99</span> and <span>2424</span> to get <span>3333</span>.<span><span>x=<span><span>3±<span>√33</span></span><span>2⋅6</span></span></span><span>x=<span><span>3±33</span><span>2⋅6</span></span></span></span>Simplify the denominator.Tap for less steps...Rewrite.<span><span>x=<span><span>3±<span>√33</span></span><span>2⋅6</span></span></span><span>x=<span><span>3±33</span><span>2⋅6</span></span></span></span>Multiply <span>22</span> by <span>66</span> to get <span>1212</span>.<span><span>x=<span><span>3±<span>√33</span></span>12</span></span><span>x=<span><span>3±33</span>12</span></span></span>The result can be shown in both exact and approximate form.<span><span>x=<span><span>3±<span>√33</span></span>12</span></span><span>x=<span><span>3±33</span>12</span></span></span><span>x≈0.72871355,<span>−0.22871355</span></span>
7 0
3 years ago
Need help! Find the area of the shaded region in the figure. ​
guapka [62]

Answer:

2.4584

Step-by-step explanation:

it's the same question as the other one

5 0
3 years ago
A hospital claims that the proportion, p, of full-term babies born in their hospital that weigh more than 7 pounds is 36%. In a
Natali [406]

Answer:

Claim :The proportion, p, of full-term babies born in their hospital that weigh more than 7 pounds is 36%.

n =  170

x = 56

We will use one sample proportion test  

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{56}{170}

\widehat{p}=0.3294

The proportion, p, of full-term babies born in their hospital that weigh more than 7 pounds is 36%.

H_0:p \neq 0.36 \\H_a:p= 0.36

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                       =\frac{0.3294-0.36}{\sqrt{\frac{0.36(1-0.36)}{170}}}

                                        =−0.8311

Now refer the p value from the z table

P-Value is .202987 (Calculated by online calculator)

Level of significance α = 0.05

Since p value < α

So we reject the null hypothesis .

Hence the claim is true

6 0
3 years ago
Other questions:
  • Graph the equations to solve the system<br><br> y= x+4<br> y= -x-6
    12·1 answer
  • Defined by two lines or rays diverging from a common point.
    12·2 answers
  • Fr fr though your friends don't want you to friend me cuz if you did i'd be ur cutest friend ;)
    10·2 answers
  • Help!! i cant figure it out
    14·2 answers
  • Adam drops a ball from a height of 12 feet. Each bounce is 50% as high as the previous bounce. What
    8·1 answer
  • What is the equation in vertex form of a parabola with vertex (-2, -2) that opens downward and is stretched by a factor of 5?
    10·1 answer
  • One more guys, can you guys help me?
    9·1 answer
  • Complete the following sentences based on the graph of the function.
    8·1 answer
  • 7 (2.268- 2.036) ? answer I need help
    8·2 answers
  • Simplify 15(10-4-2)<br> 14<br> 015/2<br> 52-4110<br> O 105-4110
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!