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3 years ago

can someone pls help me with the matching pls I will really appreciate helpful answer pls I will mark you the brainly!

Mathematics

1 answer:

Igoryamba3 years ago

4 0

ANSWER

AREA OF A SECTOR)1/3

VOLUME OF A PYRAMIND4/3 SUFACE AREA OF A SPHERE 4R

Step-by-step explnation

i only know

You might be interested in

Which expression is equivalent to 15n−24?

Makovka662 [10]

Answer: Hi!

To solve this, find the GCM (greatest common multiple) of 15 and 24.

We can do this by finding the prime factorization.

15/3 = 5

3·5

24/2 = 12

12/2 = 6

6/2 = 3

2·2·2·3 Both prime factorizations have the number 3 in common. So the GCM is 3.

Divide both numbers by 3.

15n/3 = 5n

-24/3 = -8

Since the GCM is 3, 3 goes outside the parentheses.

The numbers that go inside the parentheses are 5n-8

The answer is 3(5n-8)

You can check your answer by using the distribution property.

3·5n = 15n

3·(-8) = -24

15n-24

Hope this helps!

Step-by-step explanation:

7 0

3 years ago

You are fencing a rectangular puppy kennel with 25 ft. of fence. The side of the kennel against your house does not need a fence

Vikentia [17]

W = width
l = length = 9
Perimeter = 2*w+2*l
Normally you would face the whole perimeter but "the side of the kennel against your house does not need a fence." So you actually fence 2*w+1*l

2w+l=25
2w+9=25
2w=16
w=8

The dimensions of the kennel are:
w=8 ft
l=9ft

3 0

4 years ago

Pls help me with this one

svetoff [14.1K]

Answer:

It's not proportional

Step-by-step explanation:

The first 2 days are proportional because, they travel at an increment of 60 miles an hour.

But, on the third day, it is not proportional because they travel at an increment of 90 miles an hour.

360 / 4 = 90

120 / 2 = 60

60 / 1 = 60

3 0

3 years ago

Read 2 more answers

Which term refers to a pictorial representation of given set of data involving two variables?

timofeeve [1]

C. formula

I hope this helps, thank you.

6 0

3 years ago

Read 2 more answers

An automobile manufacturer claims that its car has a 28.0 miles/gallon (MPG) rating. An independent testing firm has been contra

d1i1m1o1n [39]

Answer:

The calculated value z = 1.3145 < 2.326 at 0.02 level of significance

The null hypothesis is accepted

Hence An automobile manufacturer claims that its car has a 28.0 miles/gallon (MPG) rating.

Step-by-step explanation:

Step(i):-

An automobile manufacturer claims that its car has a 28.0 miles/gallon (MPG) rating.

The mean of the Population 'μ' = 28.0miles/gallon

Given data after testing 270 cars, they found a mean MPG of 27.8. Assume the variance is known to be 6.25.

The sample size 'n' = 270

Mean of the sample 'x⁻' = 27.8

Given Population variance 'σ² = 6.25

The standard deviation of Population 'σ' = √6.25 = 2.5

Step(ii):-

Null hypothesis :H₀: 'μ' = 28.

Alternative hypothesis :H₁: 'μ' ≠28.

The test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{27.8-28 }{\frac{2.5}{\sqrt{270} } } = \frac{-0.2}{0.15214}$

Z = -1.3145

|Z| = |-1.3145|= 1.3145

Step(iii):-

The tabulated value of z-score at 0.02 level of significance = 2.326

The calculated value z = 1.3145 < 2.326 at a t 0.02 level of significance

The null hypothesis is accepted

Hence An automobile manufacturer claims that its car has a 28.0 miles/gallon (MPG) rating.

8 0

4 years ago