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3 years ago

(x + 6)2 - 49 What the answer

Mathematics

2 answers:

Leokris [45]3 years ago

7 0

Answer:

2x-37

Step-by-step explanation:

(x+6)2-49

Step 1: Distribute

2x+12-49

Step 2: Solve

2x-37

stich3 [128]3 years ago

3 0

Answer:

x=-1 so the answer is -39

Step-by-step explanation:

(28x-6)29 5E2=49 Start with the given equation.

x-6=22 22 2B-sqrt 2849 29 Take the square root of both sides.

x-6=sqrt 2849%29 or x-6=-sqrt 2849%29 Break up the "plus/minus" to form two equations.

x-6=7 or x-6=-7 Take the square root of 49 to get 7.

x=6%2B7 or x=6-7 Add 6 to both sides.

x=13 or x=-1 Combine like terms.

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For a 95% confidence interval what would the sample size need to be as it's most conservative to have a 2% margin of error

aleksley [76]

Answer:

The size of the sample 'n' = 2401

Step-by-step explanation:

Step:1

Given that the margin of error = 2 % = 0.02

The margin of error is determined by

$M.E = \frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }$

we know that the proportion

$\sqrt{p(1-p)} < \frac{1}{2}$

Step:2

The margin of error is determined by

$0.02 = \frac{1.96( \frac{1}{2} ) }{\sqrt{n} }$

$\sqrt{n} = \frac{1.96}{2 X 0.02}$

√n = 49

Squaring on both sides, we get

n = 49 × 49

n = 2401

Final answer:-

The size of the sample 'n' = 2401

8 0

3 years ago

6th grade math help me plzzzz

balu736 [363]

Answer:

4.11

Step-by-step explanation:

7(p-9)=-34.3

first you want to apply what is outside of the parenthesis to the inside of the parenthesis. After applying you would get

7p-63=34.3

Next you wanna get the variable to one side and the whole numbers to the other side. to do this you add 63 to each side, you end up with

7p=28.8. Then you want to get p by itself. In order for this to happen you divide each side by 7 to get p=4.114285714

7 0

3 years ago

Help me please and I'm going to change my avatar in brainly to ice kachang babe

Finger [1]

Answer:

Q1: $1.2 Q2: 5 pens

Step-by-step explanation:

4 0

3 years ago

Help please!!!!;;;;;;;;;;;;;;;;;;;;

kozerog [31]

Hey!

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Solution:

= (-18) - (4)

= -18 - 4

= -22

When you subtract a positive to a negative number the end result will always be negative.

-----------------------------------------------

Answer:

B. 22

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Hope This Helped! Good Luck!

3 0

4 years ago

Lines C and d are perpendicular. If the slope of line c is -4, what is the slope of line d?

CaHeK987 [17]

The slope of line D is also -4 because the lines are perpendicular.

6 0

3 years ago