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3 years ago

I’m really struggling would really appreciate if someone could help!!!!!

Mathematics

1 answer:

ladessa [460]3 years ago

7 0

9514 1404 393

Answer:

A) 29/40

Step-by-step explanation:

The formula for this is ...

P(A or B) = P(A) + P(B) - P(A and B)

Filling in the given values, you have ...

P(A or B) = 9/20 +1/2 - 9/40

P(A or B) = 18/40 +20/40 -9/40 = (18+20-9)/40

P(A or B) = 29/40 . . . . matches choice A

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The diagram below shows the dimensions of a triangular park built in a new housing development. Two side lengths and one angle m

evablogger [386]

ANSWER

$x = 50.5 \degree$

EXPLANATION

We use the sine rule for solving triangles.

This is given by the formula,

$\frac{ \sin(A) }{a} = \frac{ \sin(B) }{b} = \frac{ \sin(C) }{c}$

From the triangle,

$\frac{ \sin(x) }{60} = \frac{ \sin(40) }{50}$

We multiply both sides of the equation by 60 to get,

$sin(x) = \frac{ 60\sin(40 \degree) }{50}$

$sin(x) = 0.7713$

We solve for x to obtain,

$x = arcsin(0.7713)$

$x = 50.475$

To the nearest tenth, we round to one decimal place to get,

$x = 50.5 \degree$

7 0

3 years ago

The negative reciprocal of -5/8 is: A. -5/8 B. 5/8 C. 8/5 D. -8/5

noname [10]

Answer:

+ 8/5

Step-by-step explanation:

Reciprocal is flip

Take the negative flip

- ( - 1 /(5/8))

+ 8/5

7 0

2 years ago

Read 2 more answers

I need Help fast asap thank you

Jobisdone [24]

Answer:

1.25

Step-by-step explanation:

Because they are equal triangles, all of their sides are equal

so, lets take one side of each triangle (4, 5)

the law:

the scale factor = the larger side ÷ the smaller side

x = 5 ÷ 4

x = 1.25

For checking:

the larger side = the smaller side × the scale factor

Y = 4 × 1.25

Y = 5

8 0

2 years ago

The endpoints of a line segment graphed on the coordinate system are (−7, 3) and (2, 5). What is the range of the graph?

Eduardwww [97]

I think the answer would be C

4 0

3 years ago

Whats 1/7 + 3/4 ?<br> Please help me?

Katen [24]

Answer:

25/28

Step-by-step explanation:

28 is the greatest common factor, found by multiplying 7 by 4 (the denominators)

1/7 = 4/28

3/4 = 21/28

21/28 + 4/28 = 25/28

6 0

3 years ago

Read 2 more answers