All categories

3 years ago

IF you help me I will give you 14 points and a brainist and thank you and 5 stars

Mathematics

2 answers:

ElenaW [278]3 years ago

5 0

Answer:

Step-by-step explanation:

Nutka1998 [239]3 years ago

5 0

Answer:

Step-by-step explanation:

for every 10 apples there are 8 strawberries\

have a nice day T_T

You might be interested in

What is the inverse of the function f(x) = one-ninthx + 2?

Bumek [7]

Answer: 9x - 18

<u>Step-by-step explanation:</u>

Inverse is when you swap the x's and y's and solve for y

$\text{Given: }\quad y=\dfrac{1}{9}x+2\\\\\text{Swapped: }x=\dfrac{1}{9}y+2\\\\.\qquad \quad x-2=\dfrac{1}{9}y\\\\.\qquad 9(x-2)=y\\\\.\quad \large\boxed{9x-18=y}$

3 0

3 years ago

The earth is 146 000 000 kilometres from the sun, what is the number in standard form?

Tanya [424]

<span>1.46 X 10(8) (to the eighth) Km</span>

7 0

3 years ago

A 55% decrease followed by a 25% increase

Lina20 [59]

Let's say the item starts off at $100.

A 55% decrease means 100%-55% = 45% of the value is still there. The item is now worth 0.45*100 = 45 dollars.

Now increase this by 25%. The long way to do this is to add 25% of 45 onto 45

(25% of 45) + (45) = 0.25*45+45 = 11.25+45 = 56.25

Or, we can multiply 45 by 1.25 since the multiplier 1.25 represents a 25% increase

1.25*45 = 56.25

-----------------------------------------------------

The item was $100, it drops to $45 after the 55% decrease, then it is $56.25 after the 25% increase.

Let's compute the percent difference

A = 100 = old value

B = 56.25 = new value

C = percent difference

C = 100*(B-A)/A

C = 100*(56.25-100)/100

C = -43.75%

The negative C value indicates a percent decrease.

So combining a 55% decrease and a 25% increase leads to an overall decrease of 43.75%

-----------------------------------------------------

A shortcut is to multiply 0.45 and 1.25 to get 0.5625

Then subtract this from 1 to get 1-0.5625 = 0.4375

This is another way to see we have a 43.75% decrease.

8 0

4 years ago

The population of mosquitoes in a certain area as a function of inches of rainfall is modeled in the table. The function is quad

torisob [31]

Answer:

The x-intercept represents that after 10 in. of rain there are mosquitoes.

The x-intercept represents that after 0 in. of rain there are no mosquitoes.

Step-by-step explanation:

We are given a table that represents the population of mosquitoes in a certain area as a function of inches of rainfall :

RAINFALL(in.) POPULATION (millions.)

0 0

1 9

3 21

4 24

5 25

6 24

We will first find the function P(t) which denotes the number of mosquitoes after t inches of rainfall.

As the function is quadratic.

Hence , let:

$P(t)=at^2+bt+c$

At t=0 we have, P(t)=0

$c=0$

at t=1 we have: P(t)=9

i.e.

$a+b=9-----(1)$

Also at t=2 we have: P(t)=21

i.e.

$9a+3b=21-------(2)$

On solving equation (1) and (2) we get:

a= -1 and b=10

Hence,

$P(t)=-t^2+10t$

We know that the x-intercept of a graph is a point where the y-value is zero.

i.e. it is the inches of rainfall when the population of mosquitoes is zero i.e. there are no mosquitoes.

i.e. we have to find t such that:

P(t)=0

i.e.

$-t^2+10t=0\\\\i.e.\\\\t(10-t)=0\\\\i.e.\\\\ t=0\ or\ t=10$

Hence, we have got two x-intercept.

one at t=0 and the other at t=10.

The x-intercept represents that after 10 in. of rain there are no mosquitoes.

The x-intercept represents that after 0 in. of rain there are no mosquitoes.

5 0

4 years ago

Read 2 more answers

Please help me on this

Sphinxa [80]

Since NS bisects QNR, the angles SNQ and SNR will be congruent.

They are congruent that means they are equal to each other. We will set them equal to each other and find the value of x first.

6x - 57 = 2x + 15
6x = 2x + 72
4x = 72
x = 18

Now we will substitute 18 for x in each angle measure and find measure of them.

Angle SNQ = 6(18) - 57 = 51
Angle SNR = 2(18) + 15 = 51

Now we will add both angles to find the total measure of angle QNR.

51 + 51 = QNR
102 = QNR

Hope this helps :)

5 0

3 years ago