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Novay_Z [31]
2 years ago
11

There are a total of 30 white and black marbles in a box. There are 14 more white marbles than black marbles. How many black mar

bles are in the box?​
Mathematics
1 answer:
disa [49]2 years ago
7 0

Answer:

16

Step-by-step explanation:

30-14=16

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given that (y+2) (y+3) and (2y^2+1) are consecutive terms of an arithmetic progression, find the possible value of y​
mafiozo [28]

Answer:

<em>-3/2 and 1</em>

Step-by-step explanation:

Given the  arithmetic sequence  (y+2) (y+3) and (2y²+1), the common difference is gotten by taking the difference in their terms. For example if we have 3 terms T1, T2, T3... the common difference d = T2-T1 = T3-T2

From the  sequence given;

T1 = y+2, T2 = y+3 and T3 = 2y²+1

d = y+3-(y+2) = 2y²+1- (y+3)

open the parenthesis

y+3-y-2 = 2y²+1- y-3

1 = 2y²+1- y-3

1 = 2y²- y-2

2y²- y-2-1 = 0

2y²- y-3 =0

Factorize the resulting expression

2y²- y-3 =0

2y²- 2y+3y-3 =0

2y(y-1)+3(y-1) = 0

(2y+3)(y-1) = 0

2y+3 = 0 and y-1 = 0

2y = -3 and y =1

y = -3/2 and 1

<em>Hence the possible values of y are -3/2 and 1</em>

8 0
3 years ago
Which of the following a, b, and c values would you use in the Quadratic formula to solve:
aliina [53]
The answer would be B
4 0
3 years ago
Does anyone know how to do this ??
german

Answer:

Step-by-step explanation:

8 0
3 years ago
Is a tray with a circumference of 32 inches is big enough to
yKpoI14uk [10]

Answer:

Yes

Step-by-step explanation:

Circumference formula is C=2 pi r, if you divide the pizza by 2 to get the radius,5, then input it into the formula to get 31.41592654, and since this number is smaller than 32 it will fit. If 10 is the radius it will not fit.

7 0
3 years ago
Identify a pair of perpendicular lines in the given figure.
Ksju [112]

the answer is c

Step-by-step explanation:

because lines q and s are perpendicular to each other

4 0
2 years ago
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