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3 years ago

OPEN ENDED QUESTION

Mathematics

1 answer:

posledela3 years ago

4 0

Answer: I hope this helps :)

Substitution: 45+15(6-1)

Simplify: 120

Step-by-step explanation:

Calculate within parenthases (6-1) =5 =45+15(5)

Multiply left to right 15(5)=75 =45+75

Add leftg to right 45+75=120

Answer = 120

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Please please please do all questions in the photo will give brainlest

Jobisdone [24]

1.) 403.97
2.)36
3.)8

1.)20
2.) 5/14
3.) 15.6

4 0

3 years ago

Read 2 more answers

Reduce 7y + 2y 2 - 7 by 3 - 4y.

NARA [144]

Answer:

D. $2y^2+11y-10$ .

Step-by-step explanation:

Given:

We need to reduce $7y+2y^2-7$ by $3-4y$

Solution:

To reduce the equation means we need to subtract the one equation from other.

First we will arrange the equation n proper format we get;

$2y^2+7y-7$ ⇒ equation 1

Also Arranging other equation we get;

$-4y+3$ ⇒ equation 2

Now we will subtract equation 2 from equation 1 we get;

$(2y^2+7y-7)-(-4y+3)$

Now Applying distributive property for the sign we get;

$2y^2+7y-7+4y-3$

Now Arranging the like terms we get;

$2y2+7y-+4y-7-3\\\\2y^2+11y-10$

Hence the reduce form of the given equation is $2y^2+11y-10$ .

7 0

3 years ago

Find the values of x and y

valentina_108 [34]

Answer:

x = 3, y = 1

Step-by-step explanation:

2 raised to what power gives you 16?

2*2*2*2 = 16 so 2^4

3 raised to what power gives you 9?

3*3 = 9 so 3^2

the exponent cannot be negative so x has to be greater than y and x cannot be the same as y otherwise you will get a 0.

x = 3 , y = 1

2^(3+1) = 2^4 = 16

3^(3-1) = 3^2 = 9

7 0

3 years ago

Read 2 more answers

Someone help me do the first problem so that I can do the rest

Novay_Z [31]

Answer:

C = 69.1 ft

Step-by-step explanation:

The circumference is given by

C = 2*pi*r

C = 2* 3.14 * 11

C =69.08

Round to the nearest tenth

C = 69.1 ft

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4 years ago

Express the confidence interval (0.086 comma 0.130 )in the form of ModifyingAbove p with caret minus Upper E less than p less th

Nitella [24]

Answer:

C.I = 0.108 ± 0.022

Step-by-step explanation:

In this case, we are given a symmetric confidence interval, and the sample proportion p', is derived by finding the average of the two values.

Therefore, the sample proportion will be:

$p' = \frac{0.086 + 0.130}{2}$

$= \frac{0.216}{2}$

= 0.108

p' = 0.108

To find the margin of error, we have:

M.E = ½ * length of confidence interval

Where length of confidence interval = 0.130 - 0.086

= 0.044

Therefore,

$M.E = \frac{1}{2} * 0.044 = 0.022$

Margin of error = 0.022

The confidence interval is expressed as:

p' ± M.E

= 0.108 ± 0.022

5 0

3 years ago