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2 years ago

Multiple choice please answer please

Mathematics

1 answer:

tankabanditka [31]2 years ago

3 0

Answer:

B. $cos^{-1} \bigg(\frac{4}{5}\bigg)$

Step-by-step explanation:

$\because \cos \angle B = \bigg(\frac{4}{5}\bigg)\\\\\therefore \angle B =cos^{-1} \bigg(\frac{4}{5}\bigg)\\$

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Line E: 5x + 5y = 40

Marianna [84]

Answer:

The correct answer is d, there are infinitely many solutions.

Step-by-step explanation:

If the variable terms are the same and the constants are the same, the equation has infinitely many solutions.

Ex: 5(3)+5(5)=40 3+5=8

5(4)+5(4)=40 4+4=8

Hope this helps! Brainliest please!

8 0

2 years ago

2/5 g+3h -6 when g=10 h=6

motikmotik

<h3>hello!</h3>

let's evaluate this expression

$\pmb{\displaystyle\frac{2}{5}g+3h-6 }$

$\pmb{\displaystyle\frac{2}{5} *10+3(6)-6}$

$\pmb{\displaystyle\frac{2}{5} *10+18-6}$

$\pmb{\displaystyle\frac{2}{5} *10+12}$

Multiply:

$\pmb{\displaystyle\frac{2}{5} *\frac{10}{1} =\frac{20}{5} =4}$

Final Step:-

$\pmb{4+12}$

$\pmb{16}$

======================================================

Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I'll comment and/or edit my answer :)

5 0

1 year ago

To win a lottery, 7 numbers are drawn at random from a pool of 21 numbers. Numbers cannot repeat. If a person has one ticket,

Aleks04 [339]

Answer:

the answer should be 3....this is not right btw

7 0

2 years ago

Read 2 more answers

In each of the following ,make y the subject and hence find the value of y when a=2, b=3 ,and c=4.

zvonat [6]

Part i

$\dfrac{2a-7}{6y} = \dfrac{3b-5}{2c}$

$y = \dfrac{ 2c(2a-7)}{6(3b-5)} = \dfrac{c(2a-7)}{9b-15}$

Substituting,

$y = \dfrac{4(2(2)-7)}{9(3)-15} = \dfrac{ -12}{12} = -1$

Answer: -1

Part ii

I'm not sure that one's typed in correctly but I'll solve it as written.

$3-34y + 2a = \dfrac{3b-5}{2c + 1}$

$34y = 3+2a-\dfrac{3b-5}{2c + 1}$

$y = \frac 1 {34}\left(3+2a-\dfrac{3b-5}{2c + 1} \right)$

We're not asked to simplify it so I wont. Substituting,

$y = \frac 1 {34}\left(3+2(2)-\dfrac{3(3)-5}{2(4) + 1} \right) = \frac 1 {34}(7-4/9) = \dfrac{59}{306}$

Answer: 59/306

3 0

3 years ago

Find the area + perimeter of the following triangle

White raven [17]

Answer:

Perimeter = 14 $\sqrt{2}$

Area = $\sqrt{42}$

Step-by-step explanation:

4 0

2 years ago