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netineya [11]
3 years ago
9

Hi i need some help on this, please explain

Mathematics
1 answer:
DedPeter [7]3 years ago
4 0

Answer:

w = 32

Step-by-step explanation:

Remark

The value of the exterior angle (marked w + 33) = the sum of the two angles not connected to it. w and w + 1

Equation

w + w + 1 = w + 33

Solution

2w + 1 = w + 33      Subtract w from both sides.

2w - w + 1 = 33       Combine

w + 1 = 33               Subtract 1 from both sides.

w = 33 - 1

w= 32        

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(4x^3 - 5x^2 + 3) - (6x^3 + 2x^2 - x) Which of the following expressions is equivalent to the expression above?
weqwewe [10]

Answer:

c

Step-by-step explanation

    Factoring:  2x3-5x2+7x-6

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1:  7x-6

Group 2:  2x3-5x2

so its c

Pull out from each group separately :

Group 1:   (7x-6) • (1)

Group 2:   (2x-5) • (x2)

Bad news !! Factoring by pulling out fails :

The groups have no common factor and can not be added up to form a multiplication.

6 0
3 years ago
A department store wants to know what fraction of its customers in a certain market have store credit cards, and what their aver
bearhunter [10]

Answer:

The 98% confidence interval for the average credit card balance is

(564.04, 635.96).

Step-by-step explanation:

We have to calculate the 98% confidence interval on the average credit card balance.

The sample will consist of the n=30 customers that have credit card.

The sample has a mean of $600 and a standard deviation of $80.

As the population standard deviation is estimated from the sample standard deviation, we will use a t statistic.

The degrees of freedom are:

df=n-1=30-1=29

The critical value for a 98% CI and 29 degrees of freedom is t=2.463 (this can be looked up in a t-table).

Then, the margin of error is:

E=t\cdot s/\sqrt{n}=2.463*80/\sqrt{30}=197.04/5.48=35.96

Then, the upper and lower bounds of the confidence interval are:

LL=\bar X-E=600-35.96=564.04\\\\UL=\bar X+E=600+35.96=635.96

4 0
3 years ago
Please help with these questions (no links)
seraphim [82]
If the cakes are circles,
3.14(4)2= 50.24
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#1 is 28.26
3 0
3 years ago
Help me ill give Brainly if u do lolzzzzzzz
fredd [130]
The answer is 4
Hope i helped
6 0
3 years ago
Read 2 more answers
Solve the system of equations. 2x + 3y = 1 5x + 2y = 8 What is the solution?
aalyn [17]

Answer:

(2,-1)

Step-by-step explanation:

7 0
4 years ago
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