3 years ago

Brainlyist pls give an explanation

Mathematics

1 answer:

hichkok12 [17]3 years ago

7 0

C reflection across y axis
It’s mirroring off the y axis

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What three consecutive even numbers added up together equal 42

sdas [7]

12+14+16=42 is your answe

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3 years ago

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the formula for glue says to add 60 ml of hardener to each container of resin. How much hardener should be added to 15 container

Aleonysh [2.5K]

Answer:

0.9 L of hardener

Step-by-step explanation:

Find the total mL then convert into L

60*15=900

900mL=0.9

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3 years ago

A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimat

Contact [7]

Answer: a. n= 1068

b. n= 164

Step-by-step explanation:

The formula to find the sample size :

$n=p(1-p)(\dfrac{z^{*}}{E})^2$

, where p=prior population proportion , z* = critical z-value and E = Margin of error.

Here , let p=proportion of computers that use a new operating system.

Given : Confidence level = 95%

i.e. z* = 1.96 [by z-table]

Margin of error : E = 3% =0.03

a. If p is unknown , then we assume p=0.5

Then, $n=(0.5)(1-0.5)(\dfrac{1.96}{0.03})^2=1067.11111\approx1068$

i.e. n= 1068

b. p=0.96

Then, $n=(0.96)(1-0.96)(\dfrac{1.96}{0.03})^2=163.908266667\approx164$

i.e. n= 164.

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3 years ago

A, B and C did a test, A got 3/5 of

Fiesta28 [93]

<h3>Answer:</h3>

C, B, A

<h3>Explanation:</h3>

Simply change all the numbers to decimals

A is .6
B is .62
C is .625

After you put them in order from greatest to least. And the anwser is .625, .62, .6. Which is C, B, A.

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3 years ago

Find t12 term in an arithmetic progression having t3 = 10 and t10 = −4 .

Marat540 [252]

Answer:

t12= -8

Step-by-step explanation:

a+2d=10 (1)

t10

a+9d=-4. (2)

From (1)

a=10-2d. (3)

Sub into (3) into equ (2)

a+9d=-4

10-2d+9d=-4

10+7d=-4

7d=-4-10

7d=-14

Divide both sides by 7

d=-14/7

d= -2

10=a+2d

10=a+2(-2)

10=a-4

10+4=a

14=a

a=14

t12=a+11d

= 14+11(-2)

=14-22

= -8

t12= -8

6 0

3 years ago