What causal link can be inferred from this statement? As weather conditions change, birds migrate from one region to another for breeding.Weather changes cause birds to breed.
Weather changes cause bird migration.
Migrating birds cause weather changes.
Breeding birds cause weather changes.
Bird breeding causes bird migration.

Answers

Answer 1

Answer: Weather changes cause bird migration.

Answer 2

Answer:

B weather changes cause bird migration

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Lim (h->0) (sqrt(25+h)-5)/h.

Answers

$\lim_(h \to 0) ( √(25+h) -5)/(h)= (0)/(0)$
We have to multiply numerator and denominator by: √(25-h)+ 5:
$\lim_(h \to 0) ( √(25+h)-5)/(h)* ( √(25+h) +5)/( √(25+h)+5) = \n \lim_(h \to 0) (25+h-25)/(h( √(25+h)+5) ) = \n \lim_(h \to 0) (1)/( √(25+h) +5) = \n = (1)/(5+5)=$ = 1/10 = 0.1

Given the formula: t = (sq. rt. d)/4 what is the value of t when d is 900 minutes?

Answers

$t=(√(d))/(4) = (√(900))/(4) = (√(30\cdot 30))/(4) = (30)/(4) = 7.5$

Make a formula to find the of the diameter 'a' if the area is 'A'.

Answers

Answer:

$2\sqrt{(A)/(\pi)} = a$

Step-by-step explanation:

I am assuming that you are referring to the diameter and area of a circle. If this is false, then please note that my answer is wrong.

Ok, we know that the area formula for a circle is A = $\pi r^(2)$ , where r is the radius.

We also know that the diameter, a, is two times the radius. Thus, $a = 2r$ , which also means that $(1)/(2) a = r$ . This means that we can substitute the radius (r) with half the diameter ( $(1)/(2)a$ ) in the area formula equation:

$A = \pi *((1)/(2) a)^(2)$

Your question asks us to find the diameter, which means we must solve for, or isolate, the diameter (a):

$A = \pi *((1)/(2) a)^(2)\n(A)/(\pi) =((1)/(2) a)^(2)\n(A)/(\pi) =(1)/(4) a^(2)\n(4A)/(\pi) = a^(2)\n\sqrt{(4A)/(\pi)} = a\n2\sqrt{(A)/(\pi)} = a$

Express the ratio 45 seconds to 30 minutes as a fraction in simplest form.

Answers

Answer: The required ratio in simplest form is 1 : 40.

Step-by-step explanation: We are given to express the ratio 45 seconds to 30 minutes as a fraction in simplest form.

We know that

1 minute = 60 seconds.

So, 30 minutes = (30 × 60) = 1800 seconds.

Therefore, the ratio is given by

$45~\textup{seconds}:30~\textup{minutes}\n\n=\frac{45~\textup{seconds}}{30~\textup{minutes}}\n\n\n=\frac{45~\textup{seconds}}{1800~\textup{seconds}}\n\n\n=(1)/(40)\n\n=1:40.$

Thus, the required ratio in simplest form is 1 : 40.

$1min=60s\to30min=30\cdot60s=1800s\n\n45s:30min=45s:1800s=45:1800=(45)/(1800)=(45:45)/(1800:45)=(1)/(40)$

What is the value of -4 + 91 + 72?

Answers

Answer:

159

Step-by-step explanation:

-4+91=87

87+72=159

Answer:

159

Step-by-step explanation:

A student conducts a survey to determine which students at the high school completed an algebra course during their freshman year. 49, 34, and 48 students are selected at random from the Sophomore, Junior, and Senior classes. Each class has a population of 496, 348, and 481 respectively. Which type of sampling did the student use?random

stratified

systematic

cluster

Answers

The type of sampling done on the students is

STRATIFIED

Since the population are divided into strata (groups) according to their year level and random samples are taken from each of the stratum.

Random sampling is done when the samples are randomly taken from all the population. Systematic sampling is done when there is an interval used to determine which sample is to be taken. Cluster sampling is done when the population is grouped into cluters and samples are taken from random clusters. Cluster sampling does not ensure that samples will be taken from all clusters.

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Could anyone help with math?? Will up vote, thanks!If a cone-shaped vase can hold 45 cubic centimeters of water and has a radius of 2 centimeters, what is the height of the vase? Use 3.14 for pi. Round your answer to the nearest hundredth. 7.45 centimeters 10.75 centimeters 14.33 centimeters 22.50 centimeters