3 years ago

Please help i don't understand

Mathematics

1 answer:

dalvyx [7]3 years ago

5 0

C is about 55 a is about 95. Step by step explanation:

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Could yall help me pls?

kaheart [24]

Answer:

240 cm^2

Step-by-step explanation:

area of each triangle

=(10 x 7)/2 cm^2

=35 cm^2

area of four triangles

=35 x 4 cm^2

=140 cm^2

area of the square

=10 x 10 cm^2

=100 cm^2

area of the polygon

=(100 + 140) cm^2

=240 cm^2

8 0

3 years ago

Aaron is a high school graduate working as a retail clerk. He earns a median salary for a high school graduate. Aaron is thinkin

sergiy2304 [10]

Answer:

i would say c

Step-by-step explanation:

5 0

3 years ago

The department of public safety has an old memo stating that the number of accidents per week at a hazardous intersection varies

marysya [2.9K]

Answer:

C. 0.1515

Step-by-step explanation:

The main objective here is to find the P-value for the test of $H_0$

Given that ;

the mean value = 2.2

the standard deviation = 1.4

number of recorded accident per week = 52

The null hypothesis is : $H_o: \mu =2$

The alternative hypothesis is : $H_A = \mu < 2$

The Z- value can be calculated as:

$z = \dfrac{x- \mu}{\dfrac{\sigma }{\sqrt{n}}}$

$z = \dfrac{2- 2.2}{\dfrac{1.4 }{\sqrt{52}}}$

$z = \dfrac{- 0.2}{\dfrac{1.4 }{7.211}}$

z = -1.03

From the normal distribution table for probability;

P(z< -1.03 ) = 0.1515

6 0

4 years ago

Evaluate the expression when x=6 and y=-3.<br> -x+7y

lys-0071 [83]

Answer:

-27

Step-by-step explanation:

Let x = 6 and y = -3

$-(6)+7(-3)\\-6-21\\-27$

3 0

3 years ago

Please help 2/6 is wrong explain how to do

Zielflug [23.3K]

Answer:

1/3

Step-by-step explanation:

12(multiplication problems) /36 (total problems 12+24)

12/36=1/3

5 0

3 years ago

Please help i don't understand ​

Please help i don't understand