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3 years ago

Please help me!! How do I do this?

Mathematics

2 answers:

Margarita [4]3 years ago

5 0

Answer:

I think 12 * 12/ 60 = ?

12*12= 144

144/ 60= ?

ivanzaharov [21]3 years ago

5 0

Answer:

360°

Step-by-step explanation:

I think

1/2 base ×height

1/2×60×12

30×12

=360

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Ben needs 1 3/8 feet of fabric to make one banner. How many banners can he make from 4 1/2 yards of fabric?

skelet666 [1.2K]

Answer:

x = 9.818

x≈10

The number of banners that can be made are 10

Step-by-step explanation:

We can use the knowledge of proportion to solve this.

First we need to convert yard to feet.

1 yard = 3 foot

4 1/2 yard = y

cross-multiply

y = 4 1/2 × 3

=9/2 × 3

y = $\frac{27}{2}$ feet

This implies 4 1/2 yards = $\frac{27}{2}$ feet

Let x be the numbers of banners needed to make from 4 1/2 yards of fabric.

1 3/8 feet = 1 banner

$\frac{27}{2}$ feets = x

cross multiply

1 3/8 × x = $\frac{27}{2}$

$\frac{11x}{8}$ = $\frac{27}{2}$

cross-multiply

22x = 216

Divide both-side of the equation by 22

22x/22 = 216/22

x = 9.818

x≈10

The number of banners that can be made are 10

3 0

3 years ago

How to find this answer using sine or cosine law?

SashulF [63]

We know that According to Law of Sines :

$\frac{SinA}{a} = \frac{SinB}{b} = \frac{SinC}{c}$

where A - B - C are the Angles of the Three Vertices of the Triangle

a - b - c are the lengths of the Opposite sides of the Angles of the Respective Vertices A - B - C

From the Given Triangle we Can Notice that :

$\frac{SinC}{28} = \frac{Sin92}{41}$

$SinC = \frac{0.999\times28}{41}$

$SinC = \frac{27.98}{41}$

SinC = 0.682

$C = \sin^-^1(0.682)$

C = 43°

5 0

3 years ago

For the function f (x) = 3 (x + 7), find -1().

AlekseyPX

Given:

The function is $f(x)=3(x+7)^{\frac{1}{4}}$ .

To find:

The function $f^{-1}(x)$ .

Solution:

We have,

$f(x)=3(x+7)^{\frac{1}{4}}$

Substitute f(x)=y.

$y=3(x+7)^{\frac{1}{4}}$

Interchange x and y.

$x=3(y+7)^{\frac{1}{4}}$

Divide both sides by 3.

$\dfrac{x}{3}=(y+7)^{\frac{1}{4}}$

Taking power 4 on both sides.

$\left(\dfrac{x}{3}\right)^4=y+7$

Subtract 7 from both sides.

$\left(\dfrac{x}{3}\right)^4-7=y$

$y=\left(\dfrac{x}{3}\right)^4-7$

Substitute $y=f^{-1}(x)$ .

$f^{-1}(x)=\left(\dfrac{x}{3}\right)^4-7$

Therefore, the correct option is C.

5 0

3 years ago

A rectangle has a length of 12 cm and a diagonal of 13 cm. What is the width? *Hint: Draw a picture

Hitman42 [59]

Answer:

width = 5cm

Step-by-step explanation:

hope it helps

3 0

3 years ago

Need math help ASAP:))

vladimir1956 [14]

Answer:

50°

Step-by-step explanation:

(3x + 5) + (3x - 5) = 90

6x = 90

x = 15

∠P = 50°

4 0

3 years ago