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2 years ago

Solve using substitution

Mathematics

1 answer:

sattari [20]2 years ago

5 0

Answer:

The answer should be "No Solution" as these lines never meet each other

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John and Beth plan to visit a bookstore. Based on their previous visits to this bookstore, the probability distributions for the

lora16 [44]

Answer:

D) 0.1250

Step-by-step explanation:

Let P(J) = Probability of John to purchase 0 books

Let P(B) = Probability of Beth to purchase 0 books

P(J∩B) = Probability that both john and Beth will purchase 0 books .ie. a total of 0 books is purchased.

Since the decisions to purchase books are two independents events,

P(J∩B) = P(J) * P(B)

P(J) = 0.5

P(B) = 0.25

P(J∩B) = 0.5 * 0.25

P(J∩B) = 0.125

8 0

3 years ago

In triangle ABC, AB= 10cm, AC=9cm and angle B=60 degrees. Let BC=x cm. Use cosine rule to show that x is a solution of x^2-10x+1

stira [4]

Answer:

Step-by-step explanation:

3 0

3 years ago

I need help with these questions

m_a_m_a [10]

Answer:

1. -14

2. v=10

Step-by-step explanation:

- 22= - 8+k

-k-22=-8

-k=-8+22

-k=14/(-1)

k=-14

6 0

3 years ago

Two triangles are shown. The first triangle has sides x, 6 cm, and 12 cm, and the second triangle has corresponding sides 20 cm,

swat32

Answer:

Given the two triangles are shown:

First triangle has sides x cm , 6 cm and 12 cm.

and

Second triangle has sides 20 cm , 8 cm and 16 cm.

Since, the given two triangles are Similar.

⇒there corresponding sides are in proportion.

i,e

$\frac{x}{20}=\frac{6}{8}=\frac{12}{16}$

(a)

$\frac{x}{20}=\frac{12}{16}$

Solve for x;

By cross multiply we have;

$16x = 240$

Divide both sides by 16 we get;

$x = 15$ cm

(b)

Find x using the ratio sides:

$\frac{6}{8} = \frac{x}{20}$

By cross multiply we have;

$120 = 8x$

Divide both sides by 8 we get;

$15 = x$

$x = 15$ cm

The value of x =15 cm in both a and b is same because the given two triangles are similar,

by definition of similarity, the given triangles have their corresponding sides are in proportion.

5 0

3 years ago

(Geometry) PLZ HELP ASAP

Alborosie

Answer:

The height of the cylinder 'h' = 4 inches

Step-by-step explanation:

Explanation :-

Given diameter of the cylinder ' d' = 10 inches

Diameter of the cylinder d = 2 r

Radius of the cylinder

$r = \frac{d}{2} = \frac{10}{2} = 5$

Given Volume of the cylinder 'V' = 314 cubic inches

Volume of the cylinder Formula

V = π r² h

3 14 = 3.14 (5)² h

$h = \frac{314}{3.14 X 25}$

h = 4

The height of the cylinder 'h' = 4 inches

5 0

3 years ago