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kolezko [41]
2 years ago
15

My little brother needs help and tbh I forgot all abt this

Mathematics
2 answers:
klasskru [66]2 years ago
6 0

Answer:

15

Step-by-step explanation:

Rectangle Formula:

a = b * w

a = area

b = base

w = width

Replace variables with numbers given:

375 = 25 * w

Divide both sides by 25

w = 15

Svetach [21]2 years ago
5 0

Answer:

Well by the looks of it its H. The other options are way off it looks like.

Step-by-step explanation:

However, is this the entire question something is definitely missing from there so I can not fully assist with the question.

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Simplify please: 7x^{2}-4x^{2}y-x^{2}+8x^{2}y
Andre45 [30]

Answer: 6x^(2)+4x^(2)y or 4x^2y+6x^2

8 0
3 years ago
The length of a rectangle is 1 more yd than twice the width, and the area of the rectangle is 66 yd squared. Find the dimensions
Salsk061 [2.6K]

Width = 5.5yd  

Length = 12yd

<u>Explanation:</u>

Area of rectangle =  66yd^{2}

Let width of the rectangle = b ,  

So, length = 2b+1  

Area of rectangle = (length X width) - eqn 1

Putting the value of length and width in above equation 1,

66yd^{2} = (2b+1) X b\\66yd^{2} = 2b^{2} + b\\2b^{2} +b-66 = 0\\

On solving the equation we get,

b = 5.5yd

So, width (b) = 5.5yd

and length = 2(5.5) + 1

l = 12yd

Hence,  

Width = 5.5yd  

Length = 12yd

6 0
3 years ago
The mean annual premium for automobile insurance in the United States is $1,499. Being from Pennsylvania, you believe automobile
timama [110]

Answer:

a) Then, t(s) is in the rejection region. We can not support that the mean annual premium in Pennsylvania is lower than the national mean annual premium

b) The point estimate of the difference is  59 $

Step-by-step explanation:

From sample we get:

sample size    n  =  25

annual mean   x  =  1440

standard deviation of the sample   s  =  150

mean for the mean annual premium    μ  = 1499

Hypothesis Test:

Null Hypothesis                      H₀           x  =   μ

Alternative Hypothesis          Hₐ           x  <   μ

Alternative Hypotesis indicates that the test is a one-tail test to the left

Let´s assume  confidence Interval 95 %    then  α  =  5 %   α = 0.05

As  n < 30 and we assume normality we will make a t-student test

degree of freedom    df  =  n  -  1    df  = 24

With df = 24  and  α = 0.05 and from t-student table we get t(c) =  - 1.711

To calculate t(s) we apply:

t(s)  =  (  x  -  μ ) / s/√n

t(s)  =  ( 1440  -  1499 ) * 5 / 150

t(s)  =  - 59/ 30

t(s)  =  - 1.96

Comparing t(s)  and t(c)  

|t(s)| > |t(c)|

Then, t(s) is in the rejection region. We can not support that the mean annual premium in Pennsylvania is lower than the national mean annual premium.

b) The point estimate for the difference is :   x  - μ  =  59 $

3 0
2 years ago
PLEASE HELP ASAP!! I'LL GIVE THE FIRST PERSON BRAINLIEST!
Arturiano [62]

Answer:

y=2

Hope this helps!

4 0
3 years ago
Read 2 more answers
Jason had 2 dices what is the probabilty that it will land on 6 on all the dices
Sunny_sXe [5.5K]
There is a 1/3 chance both will land on 6.
3 0
2 years ago
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