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2 years ago

Plz helpppppppppppppppppppppppppppppppppppppppppppppppppppppp

Mathematics

2 answers:

BigorU [14]2 years ago

8 0

D is the answer . . .

Alla [95]2 years ago

4 0

Answer:

d.....hope this will help u:))

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Oliver took a math quiz last week. There were 25 problems on the quiz and Oliver answered 80% of them correctly. How many proble

aleksandr82 [10.1K]

Answer:

He answered 20 questions correctly.

Step-by-step explanation:

25×.8(80%) = 20.

6 0

3 years ago

Evaluate the six trigonometric functions of the angle 0.

Arturiano [62]

Given:

Right triangle

To find:

The six trigonometric functions of θ

Solution:

Hypotenuse = 18

Adjacent side to θ = 10

Opposite side to θ = ?

Using Pythagoras theorem:

$\text {Hypotenuse}^2 = \text{adjacent}^2+\text{opposite}^2$

$18^2 =10^2+\text{opposite}^2$

$324=100+\text{opposite}^2$

Subtract 100 from both sides.

$224=\text{opposite}^2$

Taking square root on both sides.

$4\sqrt{14}=\text{opposite}$

Using trigonometric ratio formula:

$$\sin\theta =\frac{\text{opposite }}{\text{hypotenuse}}$

$$\sin\theta =\frac{4\sqrt{14} }{18}$

$$\csc\theta =\frac{\text{hypotenuse}}{\text{opposite }}$

$$\csc\theta =\frac{18}{4\sqrt{14} }$

$$\cos \theta=\frac{\text { adjacent side }}{\text { hypotenuse }}$

$$\cos \theta=\frac{10}{18}$

$$\sec \theta=\frac{\text { hypotenuse }}{\text { adjacent side }}$

$$\sec \theta=\frac{18 }{10}$

$$\tan \theta=\frac{\text { opposite side }}{\text { adjacent side }}$

$$\tan \theta=\frac{4\sqrt{14} }{10}$

$$\cot \theta=\frac{\text { adjacent side }}{\text { opposite side }}$

$$\cot \theta=\frac{10}{4\sqrt{14} }$

8 0

3 years ago

A bag contains eight marbles of equal size and weight. One marble is red, two marbles are white, and five marbles are blue. A ma

kiruha [24]

Its D 1/28 because I did the problem

6 0

3 years ago

Read 2 more answers

One number is 8 times another number. The numbers are both positive and have a difference of 70. Find the numbers. Which of the

worty [1.4K]

Let, the first (smaller) number = x
Larger number = 8x
Then, 8x - x = 70
7x = 70
x = 70/7
x = 10
& 8(10) = 80

In short, Your Numbers would be, 10 & 80

Hope this helps!

4 0

2 years ago

The highest common factor (HCF) of 140 and x is 20

Zielflug [23.3K]

Answer:

x=60

Step-by-step explanation:

Given that ,

HCF of 140 and x=20,

LCM of 140 and x =420.

Solution:

It is known that the product of two numbers is equal to the product of their HCF and LCM, i-e:

140*x= HCF*LCM

Putting in the values provided,

140*x=20*420

140*x=8400

x=8400/140

x=60

Hence the variable x is 60.

5 0

2 years ago