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AnnyKZ [126]
3 years ago
12

Hii please help i’ll give brainliest

Mathematics
1 answer:
mojhsa [17]3 years ago
8 0
The second one looks like an answer. hope this helps !
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Is graphite all of the following?
AnnZ [28]

Answer: Yes!

Step-by-step explanation:

Yes, graphite is composed of 100%carbon. With this, can we say that graphite is an element or compound of carbon? Compound is composed of two or more elements combined in a substance in definite proportions, in the form of molecules held together by chemical bonds.

6 0
3 years ago
A 100-point test has x questions worth 2 points apiece and y questions worth 4 points apiece. Write an equation in Standard Form
Fofino [41]

Answer:

<h3>2x+2y = 100</h3>

Step-by-step explanation:

Total number of points in the test = 100points

If the test has x questions worth 2 points apiece, then the total number of points for x questions with 2 points each will be 2 * x i.e 2x........  1

Also, if y questions worth 4 points apiece then the total number of points for y questions with 4 points each will be 4 * x i.e 4x ....... 2

Total points = eqn 1 + eqn 2

100 = 2x+ 2y

Rearrange

2x+2y = 100

Hence an equation in Standard Form that would model this situation is 2x+2y = 100

6 0
3 years ago
What’s the correct answer for this question?
vladimir2022 [97]

Answer:

B.

Step-by-step explanation:

A cone with a radius of 1-unit will be obtained by rotating the 3-D figure.

8 0
3 years ago
Find a formula for the product P of the solutions of the quadratic equation ax²+bx+c=0 .
Ede4ka [16]

Answer:

product of the roots= c/a

Step-by-step explanation:

The the two roots(α and β) of the quadratic equation ax²+bx+c=0  as given by shridharacharya formula are

\alpha= \frac{-b+\sqrt{b^2-4ac} }{2a}

\beta= \frac{-b-\sqrt{b^2-4ac} }{2a}

now product of the roots

αβ= \frac{-b+\sqrt{b^2-4ac} }{2a}×\frac{-b-\sqrt{b^2-4ac} }{2a}

use formula (a+b)(a-b)= a^2-b^2 and solve we get

αβ= c/a

therefore product of the roots= c/a

8 0
3 years ago
A group of 20 people visited Anglesey for a weekend break.
morpeh [17]

Answer:

A = 4, B = 3, C = 7, D = 6

Step-by-step explanation:

A = 4 because A represents the number of people who didn't visit either place. This means that B + C + D = 20 - 4 = 16. To find C, which is the overlap we can do 10 + 13 - 16 = 7 so C = 7 which means B = 10 - 7 = 3 and D = 13 - 7 = 6.

6 0
3 years ago
Read 2 more answers
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