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3 years ago

3. Calculate. a) 0 - 9 =

Mathematics

2 answers:

sweet [91]3 years ago

4 0

Answer:

Step-by-step explanation:

-9

mamaluj [8]3 years ago

3 0

That would be -9 should be Roth

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For each equation how many solutions why?<br> Question e

Kay [80]

Answer:

one real solution

Step-by-step explanation:

it has only one solution since it is a linear graph and only intercepts the x axis once

4 0

3 years ago

Unit 8: Right Triangles & Trigonometry<br> Homework 2: Special Right Triangles

Vsevolod [243]

Answer:

Part 1) $x=14\sqrt{2}\ units$

Part 2) $y=14\ units$

Part 3) $z=14\sqrt{3}\ units$

Step-by-step explanation:

see the attached figure with letters to better understand the problem

step 1

In the right triangle ABC

we know that

The triangle ABC is a $45^o-90^o-45^o$

Is an isosceles right triangle

The legs are equal

therefore

AC=AB

$x=14\sqrt{2}\ units$

step 2

Find the length side BC

Applying the Pythagorean Theorem]

$BC^2=AB^2+AC^2$

$BC^2=(14\sqrt{2})^2+(14\sqrt{2})^2$

$BC^2=784\\BC=28\ units$

step 3

Find the value of y

In the right triangle BCD

$sin(30^o)=\frac{BD}{BC}$ ----> by SOH (opposite side divided by the hypotenuse)

$sin(30^o)=\frac{y}{28}$

Remember that

$sin(30^o)=\frac{1}{2}$

$\frac{y}{28}=\frac{1}{2}\\\\y=14\ units$

step 4

Find the value of z

In the right triangle BCD

$cos(30^o)=\frac{DC}{BC}$ ----> by CAH (adjacent side divided by the hypotenuse)

$cos(30^o)=\frac{z}{28}$

Remember that

$cos(30^o)=\frac{\sqrt{3}}{2}$

$\frac{z}{28}=\frac{\sqrt{3}}{2}\\z=14\sqrt{3}\ units$

3 0

3 years ago

Read 2 more answers

I need help with question 1.

Kamila [148]

Math requires a lot of thing and a procedure of steps for each topic. Yes I agree

6 0

3 years ago

Goran is running for president of the chess club, and he received 24 votes. There are 40 members in the club. What percentage of

Paha777 [63]

Answer:

60%

Step-by-step explanation:

$\sf Percentage=\left(\dfrac{Value}{Total\:value}\right) \times 100$

Given:

value = 24 votes
Total value = 40 members

Substituting these into the formula:

$\implies \sf \left(\dfrac{24}{40}\right) \times 100=0.6 \times 100 = 60 \%$

Therefore, 60% of the club members voted for Goran.

5 0

2 years ago

I’m confused on this one

Sphinxa [80]

Perimeter is the length of the whole outside of the shape, in this case the perimeter is 38. 7+7= 14 and 12+12= 24, 14+24= 38

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3 years ago