HELP WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 98 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!At the middle school, the bell rings every 40 minutes to tell the students to change classes.
Across the street the clock above city hall chimes every 30 minutes. Both the school bell
and the clock ring at noon. When will both bells ring again at the same time? Use Prime Factorization

Answer:

Step-by-step explanation:

In order to resolve correctly this combined calculation, we need to resolve it in order:

First, the operation in parenthesis. Secondly,  the powers. Then multiplications and divisions, and after all, substraction and adittion.

So, we first resolve the parenthesis:

We multiply 12 by 2, and 3 by 1.  The result is

Then we resolve the powers:

Thirdly, we resolve the multiplications:

= 72

And finally, the addition:

16 + 72 - 7 = 81

Answer:

85 messages

Step-by-step explanation:

The system of equations for this is

35 + .10x

18 + .3x

where x = the number of text messages

Usually, you would use substitution or elimination to solve this problem. However, because the answer choices were given, you can just plug in the values.

When you plug in 85, or x = 85, you get 43.5 for both equations because

35 + .10(85) = 43.5     18 + .3(85) = 43.5

Therefore, the answer would be 85 messages becuase both plans will cost the same when you send 85 text messages!

:)

Here is the full question:

When a species has several variants of a phenotype passed on from generation to generation, we can form a hypothesis about the genetics of the trait based on Mendelian theories of genetic inheritance. For example, in a two-gene dominant epistatic model, the first gene masks the effect of the second gene, leading to the expression of three phenotype variants. Crossing the dominant and recessive homozygote lines would result in a second generation represented by a mix of dominant, intermediate, and recessive phenotype variants in the expected proportions: and respectively, also called a 12:3: 1 ratio.

Such a model can provide the basis for the null hypothesis in a significance test. A cross of white and green summer squash plants gives the number of squash in the second generation F2: 131 white squash, 34 yellow squash, and 10 green squash. Are these data consistent with a 12: 3: 1 dominant epistatic model of genetic inheritance( white being dominant)?

The null hypothesis for the chi-square goodness-of-fit test is                

Answer:

The null  hypothesis for the chi-square goodness-of-fit test is :

Step-by-step explanation:

The objective of this question is to state the null hypothesis for the  chi-square goodness-of-fit test.

Given that:

There are three colors associated with this model . i,e White , yellow and green and they are in the ratio of 12:3:1

The total number of these color traits associated with this model = 12 + 3 + 1 = 16

Thus ;

The null  hypothesis for the chi-square goodness-of-fit test is :

Answer: Rational because it is a decimal that terminates.

Step-by-step explanation:

A rational number can be expressed as a ratio/ fraction of two integers so there are several methods of knowing if a number is rational or irrational.

One such way is if it is a decimal that terminates. A terminating decimal is one that has a set amount of numbers after the decimal and hence does not continue forever. This number is rational because it can be expressed as a fraction.

0.84375 in fraction form would be, 84,375/100,000.

Answer:

18 gallons

Step-by-step explanation:

Step 1:

140 : 10 = x : 5      Equation / Ratio

Step 2:

10x = 700     Multiply

Step 3:

x = 70     Divide

Step 4:

322 miles - 70 miles     To find how many miles are needed to get to 322

Step 5:

252 miles ÷ 14        To find the amount of gas  / Divide

Answer:

18 gallons more

Hope This Helps :)

Answer:

Meters Per Minute (12 meters per minute)

Step-by-step explanation:

480/40 = 12