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sergiy2304 [10]
2 years ago
9

Pls find total area of the shape below.A. 54CM²B. 50CM²C. 52CM²D. 42CM²​

Mathematics
2 answers:
crimeas [40]2 years ago
7 0

Answer:

A

Step-by-step explanation:

A

bija089 [108]2 years ago
5 0
The answer would be A i think!
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deb has 25 buttons. her grandmother gives her more buttons. then deb gives her sister 11 buttons. now deb has 57 buttons. how ma
klemol [59]
The answer would be 43 .
5 0
3 years ago
the ages of three siblings are all consecutive integers the sum of their ages is 39 how old is the youngest sibling variable equ
Verdich [7]

Answer:

Step-by-step explanation:

Let x = the age of the youngest child

Let x + 1 = the age of the middle child

Let x + 2 = the age of the oldest child

x + x + 1 + x + 2 = 39

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8 0
2 years ago
Explain how to perform a​ two-sample z-test for the difference between two population means using independent samples with known
iren2701 [21]

Answer:

The steps 1-7 have been explained

Step-by-step explanation:

The steps are;

1) We will verify that the population standard deviations are known and that the population is normally distributed which means the sample size must be a minimum of 30.

2) We will state the null and alternative hypothesis

3) We will determine the critical values from the relevant tables

4) From the critical values gotten, we will determine it's corresponding region where it can be rejected.

5)We will calculate the value of the test statistic from the formula;

z = [(x1' - x2') - (μ1 - μ2)]/√[((σ1)²/n1) + ((σ2)²/n2)]

6) If the value of the test statistic gotten from step 5 above falls in the region of rejection noted in step 4,then we will reject the null hypothesis

7) After rejection of the null hypothesis, we will now give a decision/conclusion on the claim.

5 0
2 years ago
How can i solve it <br>which method or way should I use <br>............. ..​
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Aliaa got a mark of 60 in her first 4 tests, so her total mark is 60 x 4 = 240. On her fifth test, she got a mark of 80.
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8 0
3 years ago
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