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
MA_775_DIABLO [31]
3 years ago
10

Multiply (-2/3) (5/4) Quick help!

Mathematics
1 answer:
ki77a [65]3 years ago
8 0

Answer: -\frac{5}{6}

Step-by-step explanation:

When you multiply fractions, you multiply straight across and simplify.

-\frac{2}{3}*\frac{5}{4}           [multiply]

-\frac{10}{12}               [simplify]

-\frac{5}{6}

Now, we know that the product is -\frac{5}{6}.

You might be interested in
I need help ill give out brainliest please don’t answer if you don’t know thank you
ratelena [41]

Step-by-step explanation:

I think it's right answer is c

7 0
3 years ago
A closed box with a square base is to have a volume of 85. 75 cm^3. the material for the top and bottom of the box costs ​$3.00
tiny-mole [99]

We can create two equations here:

(1) Volume = area of square * height of box

85.75 = s^2 h

(2) Cost = 3 * area of square + 1.5 * area of side box

C = 3 s^2 + 1.5 s h

 

From (1), we get:

h = 85.75 / s^2

 

Combining this with (2):

C = 3 s^2 + 1.5 s (85.75 / s^2)

C = 3 s^2 + 128.625 s-

 

Taking the 1st derivative and equating dC/ds = 0:

dC/ds = 6s – 128.625 / s^2 = 0

Multiply all by s^2:

6s^3 – 128.625 = 0

6s^3 = 128.625

s = 2.78 cm

 

So h is:

h = 85.75 / s^2 = 85.75 / (2.78)^2

h = 11.10 cm

 

So the dimensions are 2.78 cm x 2.78 cm x 11.10 cm

 

The total cost now is:

C = 3 (2.78)^2 + 1.5 (2.78) (11.10)

C = $69.47

8 0
2 years ago
At the end of the season, Lawrence softball team has to win-to-loss ratio 5:2. What is the ratio of wins to games played?
Sergeeva-Olga [200]
The answer is 5:9 or 5 to 9.

Please mark me as the brainiest answer if there's a chance :)
<span />
5 0
2 years ago
Factor the trinomial f(x) = 2x² + 5x – 12 ?
gavmur [86]

Answer:

(x + 4)(2x - 3)

Step-by-step explanation:

Given

f(x) = 2x² + 5x - 12

Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × -12 = - 24 and sum = + 5

The factors are + 8 and - 3

Use these factors to split the x- term

2x² + 8x - 3x - 12 ( factor the first/second and third/fourth terms )

2x(x + 4) - 3(x + 4) ← factor out (x + 4) from each term

(x + 4)(2x - 3)

Thus

f(x) = 2x² + 5x - 12 = (x + 4)(2x - 3) ← in factored form

5 0
3 years ago
Let V be the volume of the solid obtained by rotating about the y-axis the region bounded by y=√x and y=x^2. Find V either by sl
Ede4ka [16]

Answer:

The volume of the solid is 3\pi/10

Step-by-step explanation:

In this case, the washer method seems to be easier and thus, it is the one I will use.

Since the rotation is around the y-axis we need to change de dependency of our variables to have f(x)\rightarrow f(y). Thus, our functions with y as independent variable are:

x=\sqrt{y}\\ x=y^2

For the washer method, we need to find the area function, which is given by:

A=\pi\cdot [(\rm{outer\ radius)^2 -(\rm{inner\ radius)^2 ]

By taking a look at the plot I attached, one can easily see that for a rotation around the y-axis the outer radius is given by the function x=\sqrt{y} and the inner one by x=y^2. Thus, the area function is:

A(y)=\pi\cdot [(\sqrt{y} )^2-(y^2)^2]\\A(y)=\pi\cdot (y-y^4)

Now we just need to integrate. The integration limits are easy to find by just solving the equation \sqrt(y)=y^2, which has two solutions y=0 and y=1. These are then, our integration limits.

V=\pi\int_{0}^1 (y-y^4)dy\\ V=\pi (\int_{0}^1 ydy - \int_{0}^1 y^4dy)\\ V=\pi/2-\pi/5\\\boxed{V=3\pi/10}

3 0
3 years ago
Other questions:
  • Use Cramer's Rule to solve each system.<br> 5x – 3y = 8<br> -2x - y = 10
    6·2 answers
  • 4x^2+4x+1=9 solutions
    13·1 answer
  • Nic is saving to buy a game system &amp; games. He needs $500 total and earned $125 in one week. If he continues to make money a
    14·2 answers
  • Antonieo jogs 2 laps every 5 minutes witch point represents this relastionship
    13·1 answer
  • In a recent study, researchers found that 31 out of 150 boys aged 7-13 were overweight or obese. On the basis of this study can
    11·1 answer
  • John paid $300 for a new xbox with a discount of 40% what was the original price before discount
    12·2 answers
  • Help asap please gkhtkrkgkrkfkgfkd
    15·2 answers
  • Thomas has 21 singles, 30 triples, and 13 homeruns. What is his SLG so far if he has 198 at bats?​
    10·1 answer
  • A farmer sells eggs in containers holding a dozen eggs. If he has 2178 eggs, how many containers will be filled completely? How
    14·1 answer
  • “Find 24% of $240.”<br><br> I keep trying and getting a different answer each time, please help
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!