MATHEMATICS HIGH SCHOOL

The cost of 3 kg of apples and 6 kg of oranges is Rs 300. If the cost of 1 kg of oranges is Rs 30, find the cost of 8 kg of apples.​

Answers

Answer 1
Answer:

Answer:

Cost of 1 = 30

So cost of 8kg apples=8*30

=240

Step-by-step explanation:

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On the distant planet Cowabunga, the weights of cows have a normal distribution with a mean of 483 pounds and a standard deviation of 70 pounds. The cow transport truck holds 5 cows and can hold a maximum weight of 2840. If 5 cows are randomly selected from the very large herd to go on the truck, what is the probability their total weight will be over the maximum allowed of 2840

The 2015 senior class from Puma High School raised funds for an end of the year party at Club Sizzle. If costs $4,000 to rent out Club Sizzle plus $20 per student for food and drinks. If the senior class raised $11,000, how many students can attend the end of year party?

Answers

Answer:

There are 350 students that will be able to go to the party

Step-by-step explanation:

First we must analyze the statement and build a equation based on that, for do that, we will divide the statement a take the information.

1. The 2015 senior class raised funds of $11,000: we will represent this incomes with with a T, so:

T = 11,000

2. The cost to rent out the club sizzle is $4,000 and we will represent this cost with a C, so:

C = 4000

3. The cost per students is $ 20 and we will represent this with a S, then:

S = 20

The question is: how many students can attend, to the party so, we will form the equation:

C + S*X = T

Where X is the number of students that can attend to the party. This equation means that the cost of the club plus 20 dollars per person have to be equal to 11,000.  

Replacing values of T, C and S, we get:

$4,000 + $20*X = $11,000

Now, we will solve for X

20*X = 11000-4000

X = (11000-4000)/20

X = 350

Finally, 350 students will be able to go to the party.

$11,000-$4,000=$7,000
$7,000/$20=350
350 students can attend the end of the year party

Expanded form of 3(z +5)?

Answers

Answer:

3z+15

Step-by-step explanation:

By using the distributive property of equality you can distribute the 3 into the parenthesis to find that 3 times z is 3z and 3 times 5 is 15 so 3z+15

Answer:

3z+15

Step-by-step explanation:

Carlos is walking on a moving walkway. His speed is given by the function C(x) = 3 x
2
+ 3x - 4, and the speed of the walkway is W(x) = x
2 - 4x + 7.
20. What is his total speed as he walks along the moving walkway?
21. Carlos turned around because he left his cell phone at a restaurant.
What was his speed as he walked against the moving walkway?

Answers

His speed was 2x² + 7x - 11 as he walked against the moving walkway.

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

We are given that Carlos is walking on a moving walkway. His speed is given by the function

C(x) = 3x² + 3x - 4,

The speed of the walkway is W(x) = x² - 4x + 7.

The total speed as he walks along the moving walkway is;

x² - 4x + 7+ 3x² + 3x - 4,

= 4x² - x + 3,

Given Carlos turned around because he left his cell phone at a restaurant.

If he walked against the moving walkway

- x² + 4x - 7 + 3x² + 3x - 4,

2x² + 7x - 11

Learn more about function here:

brainly.com/question/2253924

#SPJ2
Well, for 20 you just add them, to get 4x^2-x+3. For 21, you do a substraction: 2x^2+7x-11. It'd take him quite some time (does this one even have zeros? :)) )

Subtract. -21 - (-13)

Answers

Answer:

-8

Step-by-step explanation:

-21-(-13)

=-21+13

=-8 is the answer......

Answer:

-8

Step-by-step explanation:

-21 - (-13)is the same as -21+13, so the answer is -8.

Oop- help me;-;
please..

Answers

answer:
5c+4=2(c-5)
opening the parentheses we get:
5c+4=2c-10
putting like terms together we get
5c-2c=-10-4
3c=-14
c=-14/3

so the answer would be A. C = - 4 2/3

Moira borrowed $4,500 from her grandfather to pay for her first year of college. Three years later, she repaid the $4,500 a long with an interes of $143. What was the annual interes rate?

Answers

Answer: The annual interest rate is 1.06%

Step-by-step explanation: This is a simple interest computation.

The formular for a simple interest is given as;

I = (P ×R × T)/100

Where I represents the interest paid,

P represents Principal borrowed at the beginning

R represents the rate at which the interest is calculated

T represents the Time measured in number of years

If the interest is calculated as I = (P×R×T)/100, we should first of all make R the subject of the formular;

Multiply both sides by 100

100I = P×R×T

Divide both sides of the equation by P and T

(100I)/(P × T) = R

Now we can insert the values into the rearranged formular

(100 × 143)/(4500 × 3) = R

14,300/13,500 = R

143/135 = R

1.0592592593 = R

Therefore, R which is the rate of interest equals approximately 1.06%
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