All categories

2 years ago

Which expression represent the approximate length of BC HEEEEELLLLPPP!!!

Mathematics

1 answer:

Bumek [7]2 years ago

5 0

Answer:

Step-by-step explanation:

Using the Sine rule in Δ ABC

$\frac{sinA}{BC}$ = $\frac{sin38}{AB}$ , substitute values

$\frac{sin66}{BC}$ = $\frac{sin38}{3}$ ( cross- multiply )

BC sin38° = 3 sin66° ( divide both sides by sin38° )

BC = $\frac{3sin66}{sin38}$ → A

You might be interested in

If the original price of pair of pants is $40 and they are on sale for $28. What is the percent discount?

vazorg [7]

Answer:

7.2

Step-by-step explanation:

the original is 40 and discount is 28% so $40-28%

6 0

2 years ago

Read 2 more answers

What’s the answer to number 4 ?

Marizza181 [45]

Answer:

$4.36*10^-^1$

Step-by-step explanation:

Given:

$(3.6*10^-^2)+(4.0*10^-^1)$

Make the power of '10' equal by shifting the decimal place of any one value.

$(0.36*10^-^1)+(4.0*10^-^1)$

Taking the ' $10^-^1$ ' common

$10^-^1*(0.36+4.0)$

Adding the values in the bracket gives:

$4.36*10^-^1$

7 0

3 years ago

Read 2 more answers

What is angle A + angle B 34° 56° 90° 180°

STALIN [3.7K]

Answer:

a + b = 90°

Step-by-step explanation:

It’s obvious that this is a right angle then

a + b = 90°

6 0

2 years ago

Read 2 more answers

You plant a spruce tree that grows 4 inches per year and a hemlock tree that grows _____ inches per year. The initial heights ar

UNO [17]

Complete Question:

You plant an 8-inch spruce tree that grows 4 inches per year and a 14-inch hemlock tree that grows 6 inches per year.

The initial heights are shown.

Write a system of linear equations that represents this situation.

Answer:

$s(x) = 8 + 4x$

$h(x) = 14 + 6x$

Step-by-step explanation:

Given

Spruce Tree (s):

$Initial\ Height = 8$

$Growth = 4$ (yearly)

Hemlock Tree (h):

$Initial\ Height = 14$

$Growth = 6$ (yearly)

Required

Represent as system of linear equations

Let the number of years be x.

In both cases, the equation can be formed using:

$Equation = Initial\ Height + Growth * x$

For Spruce Tree (s):

$s(x) = 8 + 4 * x$

$s(x) = 8 + 4x$

For Hemlock Tree (h):

$h(x) = 14 + 6 * x$

$h(x) = 14 + 6x$

Hence, the equations are $s(x) = 8 + 4x$ and $h(x) = 14 + 6x$

3 0

2 years ago

A town's recreation department is updating its parks. The parks must have slides and swings.

Fittoniya [83]

Number of swings = x
Number of slides = y

First condition:
number of slides must be more than 3 times number of swings
This means that: y > 3x

Second condition:
each swing cost 275$ and each slide costs 168$. They cannot spend more than 1250$. This means that the sum of costs of swings and slides should not exceed 1250$ (should be less than or equal to 1250$)
This means that: 275x+168y ≤ 1250

Based on this:
The correct choices are: b and d

5 0

2 years ago

Read 2 more answers