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3 years ago

Helppppppppppppppppppp ill mark you brainlist

Mathematics

1 answer:

erastovalidia [21]3 years ago

5 0

c^2 = a^2 + b^2

c^2 = 16^2 + 20^2

c^2 = 256 + 400

c^2 = 756

Now, square root both sides.

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Express secΦ in terms of tanΦ

Sunny_sXe [5.5K]

Answer:

$\sec\theta=\sqrt{1+\tan^2\theta}$

Step-by-step explanation:

The trigonometric identity is :

$\sec^2\theta-\tan^2\theta=1\\\\or\\\\\sec^2\theta=1+\tan^2\theta$

We need to express secθ in terms of tanθ.

The above equation becomes,

$\sec\theta=\sqrt{1+\tan^2\theta}$

Hence, this is the required solution.

5 0

2 years ago

Thirty percent of Irma’s Boutique’s sales came from leggings. They sold $390 worth of leggings last week. What were the total sa

RUDIKE [14]

Answer:

The total sales of Boutique last week = $1300

Step-by-step explanation:

Given that:

Percent of sales came from leggings = 30%

Worth of leggings sold = $390

Let,

x be the total sales in the week.

30% of x = 390

$\frac{30}{100}x=390$

0.3x = 390

Dividing both sides by 0.3

$\frac{0.3x}{0.3}=\frac{390}{0.3}\\x=1300$

Hence,

The total sales of Boutique last week = $1300

5 0

2 years ago

The expression (secx + tanx)2 is the same as _____.

Pie

(secx + tanx)^2
<span>secxsecx + secxtanx + secxtanx + tanxtanx
</span>secxsecx + 2secxtanx + tanxtanx
tanxtanx + 1 + 2secxtanx + tanxtanx
2tanxtanx + 1 + 2secxtanx <span>

The expression (secx + tanx)2 is the same as </span>1 + 2tan2x + 2secx tanx. The answer is letter D.

3 0

2 years ago

Read 2 more answers

Jennie and Claire make lemonade. The ratio of lemon to water in Jennie's lemonade is 2:3 The ratio of lemon water in Claire's le

IrinaK [193]

Answer:

Claire's lemonade is stronger

Step-by-step explanation:

Jennie's lemonade

2/2=1

3/2=1.5

Claire's lemonade

3/3=1

4/3=1.334

Jennie's lemonade has more water in the lemonade per lemon, so Claire's is stronger.

I don't know if I used proportions though.

Hope I did this correctly!

8 0

2 years ago

what is the volume of a cylinder with diameter of the base 4 inches and the height of the cylinder 6 inches ?

Elodia [21]

Answer:

24π

Step-by-step explanation:

If the diameter is 4, the radius is 2

V = $\pi r^2 *h$

r = 2

h = 6

24π

7 0

3 years ago

Read 2 more answers