All categories

3 years ago

Anybody good in geometry!?

Mathematics

2 answers:

Ivahew [28]3 years ago

8 0

8) z = 80 degrees
Because :
Angles on a straight point add up to 180 degrees so 180-132=48
180-128=52
Angles in a triangle add to 180 degrees
So 52+48= 100
180-100 = 80

crimeas [40]3 years ago

5 0

7th:

Y + 128° = 180° (Linear Pair)

Y = 180 - 128 = 52°

You're welcome...Please mark as brainliest 

au revoir madame

You might be interested in

Katy is older than Alex and Beth. Sarn is

Sholpan [36]

This would be Delores because it goes katy, Delores, Alex, Sam, Beth

8 0

3 years ago

If you have 3/12 of an orange, how many fourths do you have?

Mrac [35]

Answer:

Answer: one fourth

Fourth is a word that used to describe a number value of 1/4. To answer this question, you need to change the number you got (3/12) into x/4 form. To convert 12 into 4, then you need to divide the numerator and denominator with 3. The equation would be (3/3)/(12/3)= 1/4.

To determine how much fourth the number has, you need to divide the result with 1/4. The calculation would be: (1/4)/ (1/4)= one fourth

hope its help

thank you

good day

8 0

3 years ago

What math symbol is this? Σ

omeli [17]

Answer:

summation

Step-by-step explanation:

This symbol is the summation symbol

It means to sum what comes after it

3 0

3 years ago

Read 2 more answers

An empty box is shaped like a rectangular prism. the box has a base area of '9/10' square foot and a height of '1/3' foot. How m

maxonik [38]

Answer:3/10

Step-by-step explanation:

9 divided by 3 is 3 so that it

Next to 3/10 the denominator away stays the same,

3 0

3 years ago

Suppose you read online that children first count to 10 successfully when they are 32 months old, on average. You perform a hypo

creativ13 [48]

Answer:

$p_v =2*P(t_{(35)}$

Step-by-step explanation:

Assuming this info from R

hist(gifted$count)

## Min. 1st Qu. Median Mean 3rd Qu. Max.

## 21.00 28.00 31.00 30.69 34.25 39.00

## Sd

## [1] 4.314887

Data given and notation

$\bar X=30.69$ represent the mean

$s=4.3149$ represent the sample standard deviation

$n=36$ sample size

$\mu_o =32$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is different than 32, the system of hypothesis would be:

Null hypothesis: $\mu = 32$

Alternative hypothesis: $\mu \neq 32$

If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$t=\frac{30.69-32}{\frac{4.3149}{\sqrt{36}}}=-1.822$

P-value

The first step is calculate the degrees of freedom, on this case:

$df=n-1=36-1=35$

Since is a two sided test the p value would be:

$p_v =2*P(t_{(35)}$

7 0

3 years ago