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harina [27]
3 years ago
12

Help on my test very important

Mathematics
2 answers:
Rufina [12.5K]3 years ago
7 0

Hey buddy I am here to help!

The first one is false as the answer should be  diameter = 9cm

The second one i dont know sry

Hope it helps!

vichka [17]3 years ago
5 0
1. False, the diameter has to be bigger than the radius.
2. True, tangent lines have to be perpendicular.
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devin drew a rectangle that is 4 inches by 9 inches. it has an area of 36 square inches and a perimeter of 26 inches. which rect
Makovka662 [10]
A. 2 inches by 11 inches
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3 years ago
Find the seventh term of the geometric sequence 1, 2, 4, ... and the sum of the first seven terms. t7= S7=
IrinaK [193]

Answer:

Seventh term is 64

Sum of the first seven terms is 127

Step-by-step explanation:

The common ratio is 2

a_{n}  = a_{1} r^{n - 1}    

n = 7 and the first term is 1.  So,

a_{7}  =  1(2^{7 - 1} )  = 2^{6} = 64

Seventh term is 64

S_{n}  =  \frac{a_{1} (r^{n} -1)}{r - 1}

S_{7} = \frac{1(2^{7} -1)}{2 - 1}

    = \frac{128 - 1}{1} = 127

Sum of the first seven terms is 127

8 0
3 years ago
Explain how you know the responses to questions below. Don't forget to explain. ​
Pachacha [2.7K]

Answer:

i cant tell you the answer but one dot go to -1 and other one go to 5 then keep dotting

Step-by-step explanation:

use a ruler or ask your teachee

7 0
3 years ago
HELP!! ⚠️ In the diagram below, the two vertical segments are parallel. What is the total number of degrees in angles a, b, c, d
hodyreva [135]

Answer:

360°

Step-by-step explanation:

According to the properties of parallel lines, the following deductions can be made:

<a and <c are exterior angles of same side, therefore they are supplementary.

Thus,

m<a + m<c = 180°

<b and <d, are alternate interior angles, therefore, they are supplementary.

Thus, m<b + m<d = 180°.

The total numbers of degrees of a, b, c, d will all sum up to give 360°.

6 0
3 years ago
Which shows one way to determine the factors of 12x3 – 2x2 18x – 3 by grouping?.
Ksenya-84 [330]

The equation which shows the one way to determine the factors of provided equation by grouping is,

2x^2(6x-1)+3(6x-1)

<h3>What is a factor of polynomial?</h3>

Polynomial equations is the expression in which the highest power of the unknown variable is n (n is real number).

Factor of a polynomial is the terms in linear form, which are when multiplied together, give the original polynomial equation as result.

The provided polynomial equation is,

12x^3 - 2x^2 +18x - 3

To factorize the above polynomial equation, make the groups, by taking out the greatest common factor.

12x^3 - 2x^2 +18x - 3\\2x^2(6x-1)+3(6x-1)\\(6x-1)(2x^2+3)

Hence, the equation which shows the one way to determine the factors of provided equation by grouping is,

2x^2(6x-1)+3(6x-1)

Learn more about factor of polynomial here;

brainly.com/question/24380382

7 0
2 years ago
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