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
hoa [83]
3 years ago
15

BRAINLIEST AND 20 POINTS

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
3 0
<span>1. Which ratios form a proportion?
a. 4/5, 20/25   -----> 4/5, 4/5 Yes
b.8/12, 18/24  -----> 2/3, 3/4 No
c. 1/3, 7/24     ------> 8/24,7/24 No
d. 2/5, 6/16</span>     -----> 2/5, 3/8 No

<span>2.Which ratio forms a proportion with 9/15 = 3/5
a.3/6 = 2/3 No
b.2/3 No
c.12/30 = 2/5 No
d. 6/10</span> = 3/5 Yes

<span>3.Which proportion has cross products of 5 x 24 and 8x15?
a. 5/8=15/24 ----> 5 * 24 = 8 * 15   Yes
b.5/24=8/15  ----> 5 * 15 = 8 * 24   No
c.8/24=15/5  ----> 5 * 8 = 15 * 24   No
d. 15/8=5/24  </span>----> 15 * 24 = 5 * 8  No
You might be interested in
PLEASE HELP!!!!
KIM [24]
1. 3rd one

2. f(x) = 7x - 5
    f(2) = 7(2) - 5
    f(2) = 14 - 5
    f(2) = 9

3. c(n) = 0.75n - 0.25

4. (0,0)(2,4)
    slope = (4 - 0) / (2 - 0) = 4/2 = 2
    answer is : y = 2x

7 0
3 years ago
Read 2 more answers
The sides, top, and bottom of a storage bin are made of wood. The storage bin measures 2 meters wide, 3 meters long, and 2 meter
Firlakuza [10]
I'm pretty sure that it's b. meters squared.
8 0
3 years ago
Read 2 more answers
Create a proportion using the form = to represent the following word problem.
olga nikolaevna [1]

Answer:

60/100 and x/20 and x=12

Step-by-step explanation:

60 % of 20

60/100 = x/20

cross product

60 * 20 = 100x

divide by 100

1200/100 =x

12=x

Answer:60/100 = x/20    x= 12

hope it's right

5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bd%7D%7Bdx%7D%20%5Cint%20t%5E2%2B1%20%5C%20dt" id="TexFormula1" title="\frac{d}{dx} \
Kisachek [45]

Answer:

\displaystyle{\frac{d}{dx} \int \limits_{2x}^{x^2}  t^2+1 \ \text{dt} \ = \ 2x^5-8x^2+2x-2

Step-by-step explanation:

\displaystyle{\frac{d}{dx} \int \limits_{2x}^{x^2}  t^2+1 \ \text{dt} = \ ?

We can use Part I of the Fundamental Theorem of Calculus:

  • \displaystyle\frac{d}{dx} \int\limits^x_a \text{f(t) dt = f(x)}

Since we have two functions as the limits of integration, we can use one of the properties of integrals; the additivity rule.

The Additivity Rule for Integrals states that:

  • \displaystyle\int\limits^b_a \text{f(t) dt} + \int\limits^c_b \text{f(t) dt} = \int\limits^c_a \text{f(t) dt}

We can use this backward and break the integral into two parts. We can use any number for "b", but I will use 0 since it tends to make calculations simpler.

  • \displaystyle \frac{d}{dx} \int\limits^0_{2x} t^2+1 \text{ dt} \ + \ \frac{d}{dx} \int\limits^{x^2}_0 t^2+1 \text{ dt}

We want the variable to be the top limit of integration, so we can use the Order of Integration Rule to rewrite this.

The Order of Integration Rule states that:

  • \displaystyle\int\limits^b_a \text{f(t) dt}\  = -\int\limits^a_b \text{f(t) dt}

We can use this rule to our advantage by flipping the limits of integration on the first integral and adding a negative sign.

  • \displaystyle \frac{d}{dx} -\int\limits^{2x}_{0} t^2+1 \text{ dt} \ + \ \frac{d}{dx}  \int\limits^{x^2}_0 t^2+1 \text{ dt}  

Now we can take the derivative of the integrals by using the Fundamental Theorem of Calculus.

When taking the derivative of an integral, we can follow this notation:

  • \displaystyle \frac{d}{dx} \int\limits^u_a \text{f(t) dt} = \text{f(u)} \cdot \frac{d}{dx} [u]
  • where u represents any function other than a variable

For the first term, replace \text{t} with 2x, and apply the chain rule to the function. Do the same for the second term; replace

  • \displaystyle-[(2x)^2+1] \cdot (2) \ + \ [(x^2)^2 + 1] \cdot (2x)  

Simplify the expression by distributing 2 and 2x inside their respective parentheses.

  • [-(8x^2 +2)] + (2x^5 + 2x)
  • -8x^2 -2 + 2x^5 + 2x

Rearrange the terms to be in order from the highest degree to the lowest degree.

  • \displaystyle2x^5-8x^2+2x-2

This is the derivative of the given integral, and thus the solution to the problem.

6 0
2 years ago
What is 42.9 × 3.45 someone please
GaryK [48]

Answer:

148.005

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • An ice cream shop uses the following ingredients to make 1 sundae.
    14·1 answer
  • What is the middle term and first term of (2x-4)2
    9·1 answer
  • Write the fraction or mixed number as a decimal
    6·1 answer
  • 8 is what percent of 25
    7·2 answers
  • A cook used all of a two-pound chunk of cheese in making three recipes. Recipe I used one-third as much cheese as Recipe II did,
    7·1 answer
  • Find the value of y and<br>simplify completely.<br>27<br>y = [?]​
    12·1 answer
  • Officials begin to release water from a full man-made lake at a rate that would empty the lake in 14 weeks, but a river that can
    8·1 answer
  • Anyone? please i need help
    9·2 answers
  • X(x-1)-x^2+2x=5 :))))))
    10·2 answers
  • Draw diagonals and on rectangle ABCD. Measure and record the lengths of the diagonals.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!