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4 years ago

Pls help would be appreciated.

Mathematics

1 answer:

Bezzdna [24]4 years ago

3 0

Answer: The answer is 1,200 students.

Step-by-step explanation:

Well, 3/5 is 60%. So 60% + 15% is 75%. if the rest of the students are English revision then that is 25%. Since 25% is 40 and 25% times 3 is 75% then 40 times 3 would be the answer. The answer is 1,200 students.

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HELP I NEED TO GRADUATE

Kitty [74]

Answer:

Step-by-step explanation:

17/20 x 2/3

Then 17/10 x 1/3 = 17/30

5 0

3 years ago

Write a function to represent the set of ordered pairs.

salantis [7]

Answer:

option B) f(x) = x³ - 3

Step-by-step explanation:

we know that

If the function represent the set of ordered pairs, then the ordered pairs, must be satisfy the function

<u><em>Verify each function</em></u>

case A) f(x) = -2x

verify the ordered pair (2,5)

For x=2

substitute the value of x in the function and then compare the result with the y-coordinate of the ordered pair

$f(2)=-2(2)=-4$

$-4\neq 5$

the ordered pair not satisfy the function

The function nor represent the set of the ordered pairs

case B) f(x) = x³ - 3

Verify (1,-2)

For x=-1 ---> $f(1)=1^{3}-3=-2$ ---> is ok

Verify (2,5)

For x=-2 ---> $f(2)=2^{3}-3=5$ ---> is ok

Verify (3,24)

For x=3 ---> $f(3)=3^{3}-3=24$ ---> is ok

Verify (4,61)

For x=4 ---> $f(4)=4^{3}-3=61$ ---> is ok

the ordered pairs satisfy the function

therefore

The function represent the set of ordered pairs

case C) f(x) = x² - 3

verify the ordered pair (2,5)

For x=2

substitute the value of x in the function and then compare the result with the y-coordinate of the ordered pair

$f(2)=2^2-3=1$

$1\neq 5$

the ordered pair not satisfy the function

The function nor represent the set of the ordered pairs

case D) f(x) = 5x² - 7

verify the ordered pair (2,5)

For x=2

substitute the value of x in the function and then compare the result with the y-coordinate of the ordered pair

$f(2)=5(2)^2-7=13$

$13\neq 5$

the ordered pair not satisfy the function

The function nor represent the set of the ordered pairs

3 0

3 years ago

(PLEASE HELP QUICKLY) Three years ago, Claire borrowed money from her father to pay for a class trip. She agreed to pay 6% simpl

saw5 [17]

Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

Let's first establish the simple interest formula which we will require to solve this problem as displayed below:

Simple Interest = Principal × Rate of Interest × No. of Time Periods

I = PRN

Now let's substitute the values from the problem into this formula as displayed below:

I = $90

P = ?

R = 6%

N = 3 years

I = PRN

90 = P × 0.06 × 3

P = 90 / 0.06 × 3

P = 90 / 0.18

P = $500

ANSWER:

As the principal and the amount borrowed is the same, Claire borrowed $500. Therefore, the answer is:

D ) $500

Please mark as brainliest if you found this helpful! :)
Thank you <3

7 0

3 years ago

Hannah wants to laminate the tabletop in her study room. The tabletop is the shape of an isosceles trapezoid shown here. If lami

kondaur [170]

Answer:

$16

Step-by-step explanation: I did the math in the comments.

5 0

3 years ago

Read 2 more answers

How do you solve, 3r+2(12r+7)less then or equal to 5r-8

nignag [31]

Answer:

r ≤ -1

Step-by-step explanation:

Given in the question

<h3> 3r+2(12r+7) ≤ 5r-8</h3><h3>It can be solve by Simplifying and Reordering the terms</h3>

3r + 2(12r) + 2(7) ≤ 5r - 8

3r + 24r + 14 ≤ 5r - 8

27r + 14 ≤ 5r - 8

27r - 5r +14 + 8 ≤ 0

22r + 22 ≤ 0

22r ≤ -22

Move term containing r to the left, all term to the right.

r ≤ -22/22

simplifying

r ≤ -1

all negative integers which are smaller than or equal to -1

6 0

3 years ago