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4 years ago

Ratio tables 10 every 15 minutes how many in a hour

Mathematics

2 answers:

BaLLatris [955]4 years ago

6 0

Answer:

Step-by-step explanation: If 10 : 15, then 4 times both of those should be an hour. This would be 40 : 60. That is why 40 is the correct answer.

Nastasia [14]4 years ago

3 0

Answer:

Step-by-step explanation:

1 hour = 60 minutes

60/15 = 4

10 × 4 = 40

so the answer is 40.

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Hi :) I need help with q8 , new to this so I’m not sure how to solve it. Thank you sm :))

Marat540 [252]

Step-by-step explanation:

for part a

initial means starting point and starting point is always 0

so the question means number of thousands of bacteria in 0 hours, your n being the number of hours. so in part a u will simply just put 0 as n in equation

2^(0+3)

2³=8 thousands of bacteria

in part b

2^(n+3) means total number of bacteria

2^(n-1) is number of groups

its asking for number of bacteria in each group

so u will simply divide number of bacteria by groups

its like u have 30 candies and there are 5 groups and they ask u to find number of candies in each group so u simply divide 30 by 5

so 2^(n+3)/2^(n-1)

base is same so powers will subtract since there is division sign

2^(n+3-(n-1))

2^(n+3-n+1)

2^(3+1)

2^4= 16 thousands of bacteria in each group

8 0

3 years ago

A local catering

julia-pushkina [17]

To feed 50 people it would be $325

7 0

3 years ago

Read 2 more answers

Help fast please !! Represent the following sentence as an algebraic expression, where "a number" is the letter x. 4 is added to

Oduvanchick [21]

The answer is 2x + 4 :)

5 0

3 years ago

Ms. Mendez ate 18 red skittles, which represented 24% of the entire packet. How many skittles were in the entire packet?

postnew [5]

Answer:

Step-by-step explanation:

When you normally find a percentage of something you multiply. So, if you do the reverse operation, or divide, you'll get your answer.

18/24% is 75. And when you double check this by multiplying 75 by 24% you get 18. So, the bag of skittles <u>had</u> a total of 75 skittles.

3 0

3 years ago

What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y = 27 − x^2? show your

LUCKY_DIMON [66]

Answer:

Option B.

Step-by-step explanation:

The given curve is

$y=27-x^2$

We need to find the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve $y=27-x^2$ .

Let the vertex in quadrant I be (x,y), then the vertex in quadrant II is (-x,y) .

Length of the rectangle = 2x

Width of the rectangle = y

Area of a rectangle is

$Area=Length\times width$

$Area=2x\times y$

Substitute the value of y from the given equation.

$Area=2x(27-x^2)$

$A=54x-2x^3$ .... (1)

Differentiate with respect to x.

$\frac{dA}{dx}=54-6x^2$

Equate $\frac{dA}{dx}=0$ , to find the critical points.

$0=54-6x^2$

$6x^2=54$

Divide both sides by 6.

$x^2=9$

$x=\pm 3$

The value of x can not be negative because side length can not be negative.

Substitute x=3 in equation (1).

$A=54(3)-2(3)^3$

$A=162-54$

$A=108$

The area of the largest rectangle is 108 square units.

Therefore, the correct option is B.

7 0

3 years ago