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
SVEN [57.7K]
2 years ago
9

Guys pls ı need help really....

Mathematics
1 answer:
cestrela7 [59]2 years ago
5 0

Answer:

Step-by-step explanation:

Calculus....finally something FUN to answer!

This is integration, but here you have the area under the curve, you just don't have the upper bound. Setting that problem up looks like this:

28=\int\limits^b_1 {7x} \, dx  and using the First Fundamental Theorem of Calculus, that will integrate to look like this:

28=\frac{7x^2}{2} from 1 to b and applying the FTC:

28=\frac{7b^2}{2}-\frac{7}{2}  Multiplying everything by 2 to get rid of the denominators gives you:

56=7b^2-7\\\\56=7(b^2-1)\\8=b^2-1\\9=b^2\\b=3

You might be interested in
In a group of 25 girls, 8 ran for the cross country team, 13 are on the math league team, and 6 are on both teams. How many of t
Anna11 [10]

Answer:

10 girls are not on either team

Step-by-step explanation:

first subtract 6 from 8 to get 2 (since it's easier) because those 6 girls are on the math league team as well

next add 2 and 13 to get 15

last subtract 15 from 25 to get 10

8 0
3 years ago
Jasmine is making cookies for everyone in her class and she wants to make sure everyone gets at least one cookie. The recipe cal
andreev551 [17]

Answer:

1.5 or 3/2 teaspoons

Step-by-step explanation:

If her class has 36 students, and there are 12 cookies in every batch, then she needs 3 batches to give everyone in her class 1 cookie each. It takes 1/2 teaspoon for every recipe, so she needs 3 of those. 3 × 1/2 = 1.5 (or 3/2)

7 0
3 years ago
The function V(t)=1,000(1.06)^t models the value of an investment after t years. What does the ".06" represent in the function?
slamgirl [31]

Answer:

A

Step-by-step explanation:

Looking at the function, we have;

V(t) = 1,000(1.06)^t

Mathematically, the amount earned on an investment that offers a particular constant percentage return to a particular number of years can be written as;

V = I(1 + r)^t

where V is the value of the investment after some certain number of years

I is the initial amount invested

r is the constant percentage increase

and t is the number of years.

Let’s now re-write what we can deduce in the question.

This is;

V(t) = 1000(1 + 0.06)^t

Thus what this 0.06 represents is r which is the constant interest rate

8 0
3 years ago
1/4 to 1/2 find the percent of change-increase or decrease
Vika [28.1K]
The percent of change would be -33.3% which would then equal a 33.3% decrease (when decimal is rounded) 

what I did was turn 1/4 and 1/2 into decimals to make it easier to solve 

8 0
3 years ago
Read 2 more answers
HELP!!!!! hurry pls ​
valentina_108 [34]

Answer:

100

Step-by-step explanation:

since its collinear it has to be 180 -80 which equals 100.

4 0
3 years ago
Other questions:
  • Carla bought a T-shirt for $17.65 and a sweater for $31.79.
    10·1 answer
  • What is the area of the figure?
    6·1 answer
  • Which expression represents the sum (7z−15)+(8−6z)
    11·2 answers
  • A bathroom has a length of 10 feet and a width of 9 feet. Kade wants to put down tiles on the floor that are each 1 sq foot. The
    14·2 answers
  • On the first
    7·1 answer
  • A circle is shown. Secant R T and tangent U T intersect at point T outside of the circle to form an angle with a measure of 21 d
    7·2 answers
  • I NEED HELP PLZ I WILL GIVE THANKS AND BRAINLIST
    11·1 answer
  • Solve the system of equations <br><br> 4x-5y=21<br> 3x+10y=-53
    7·1 answer
  • Select the correct answer. Consider these functions: f(x)=x+1 g(x)=2/x.Which polynomial is equivalent to (f ◦ g)(x)?
    12·1 answer
  • In triangles DEF and OPQ, ∠D ≅ ∠O, ∠F ≅ ∠Q, and segment DF ≅ segment OQ. Is this information sufficient to prove triangles DEF a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!