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babymother [125]
3 years ago
9

Answers please! I’m a bit confused

Mathematics
2 answers:
scoray [572]3 years ago
5 0

Answer:

all work is shown and pictured

Dmitry [639]3 years ago
4 0

The answers are \frac{7}{120} and 1 \frac{1}{22}. See the attached image for the explanation.

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Pieces of paper with each letter of the alphabet are placed into a jar. A student draws
Snowcat [4.5K]

Answer:

0.71 to 2 decimal places.

Step-by-step explanation:

The Probability that a letter A through G is drawn in 1 draw = 7/26.

The probability that a different draw other A-G is made = 1 - 7/26 = 19/26.

Probability ( No A-G drawn in 4 draws) = (19/26)^4 = 0.2852.

Therefore, the probability that A-G is drawn at least once = 1 - 0.2852.

= 0.71 to 2 decimal places.

3 0
2 years ago
Find the value of each determinant
Ksenya-84 [330]

Answer:

−4304

Step-by-step explanation:

1. The given determinant is :

\begin{vmatrix}7 &31 \\  142& 14\end{vmatrix}

We need to find its determinant . It can be solved as follows :

\begin{vmatrix}7 &31 \\  142& 14\end{vmatrix}=7(14)-142(31)\\\\=-4304

So, the value of determinant is equal to −4304.

6 0
2 years ago
Hi!! Please help, thank you lots !!!
11Alexandr11 [23.1K]
3k²+11k+6, or (k+3)(3k+2), which is the 3rd one. :)
7 0
3 years ago
For the first one the answer are
BigorU [14]

Answer:

1. add 1/2x to both sides

a. you want to combine the like terms. in this case, it is the x variable.

you are left with 7/6x = 5

2. multiply by 6/7

a. the reciprocal of 7/6 will cancel out the values

4 0
3 years ago
the length of a rectangle is 7 cm more than its width and the area is 30 cm find the length, width and the perimeter
mariarad [96]

Answer:

Step-by-step explanation:

let width=x

length=x+7

x(x+7)=30

x²+7x-30=0

x²+10x-3x-30=0

x(x+10)-3(x+10)=0

(x+10)(x-3)=0

either x=-10 (rejected being negative)

or x=3

width=3 cm

length=3+7=10 cm

Perimeter=2(10+3)=2×13=26 cm

6 0
3 years ago
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