Andre and Elena are solving this system of equations: y=3x,
y=9x−30

Andre's first step is to write: 3x=9x−30
Elena’s first step is to create a new system: {3y=9xy=9x−30
Do you agree with either first step? If so which one and explain your reasoning

Answer:

5

Step-by-step explanation:

9n - 18 = 22 + n

8n = 40

n = 5

Answer:

42,676

Multiply the 7 with the 8, then the 0, and then the 9. After that, Do the same but with the 4. Once you have those integers add them together and that should give you this answer.

Answer:

42676

Step-by-step explanation:

:)))))))))))))

Answer:

264 minutes OR  4.4 hours OR 4 hours and 24 minutes (all the same)

Step-by-step explanation:

if he takes 2/5 of an hour to read the 1/11 of the book, he takes 24 minutes to read 1/11 of the book.

24 * 11 is 264.

Therefore he will take 264 minutes to finish the entire book.

Answer: x = -10/3 and 8/3

Add 1 to both sides:

∣3x+1∣=8+1

There are two equations:

3x+1=9  and -(3x+1)=9

Solve the first one:

3x+1=9  

3x=9−1

3x=8

x=8/3

Solve the second one:

-(3x+1)=9

−3x−1=9

−3x=9+1

−3x=10

x=-10/3

Answer:20

Step-by-step explanation:

solids quiz edg 2021

The number vertices does the polyhedron have is 20.

A polyhedron is a three-dimensional structure in geometry that has flat, polygonal faces, edges that are straight, and sharp vertices. A convex polyhedron is made up of finitely many points that are not all on the same plane and has a convex hull. Convex polyhedra include shapes like cubes and pyramids.

Using Euler formula

F + V = E + 2

As, From the figure the faces = 7 and edges = 30

12 + V = 30 + 2

12 + V = 32

V = 32- 12

V= 20

Learn more about Polyhedron here:

https://brainly.com/question/28718923

#SPJ6

Answer:

b.

Step-by-step explanation:

If de is = to 2 then the direction of the axis will hit the sun on different spots

Answer:

6(7 + 4) = 6(11) = 66

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

140/10=14

Answer:

No, Because BC is longer than AB

Answer:10600

Step-by-step explanation:

Answer:

24

Step-by-step explanation:

we have

x is-6*y

y is -4

according to question

x is -6*-4

x is 24

Answer:

a

Step-by-step explanation:

It's a constant slope

Answer:

D is the Answer

Step-by-step explanation:

Answer:

What expression??

Step-by-step explanation:

put the expression in the comments

Answer:j2+4j+2

Tap to view steps...

Step-by-step explanation:

(j is to the power of 2 btw, i couldnt write it

Answer:

63

Step-by-step explanation:

14/8 * 4/5 = 56/40 = 7/5

Answer:

y = 1/2x + 10.5

Step-by-step explanation:

Answer:

-5

Step-by-step explanation:

Answer:

[tex]the \: time \: will \: be \: \boxed{1.8 \: hrs} \to \: \\ this \: is \: true \: since \: the \: car \: traveled \: with \: lower \: speed : \\ it \: will \: then \: cover \: the \: same \: distance \\ \: with \: mor e\: time. \: this \: is \: true \:s ince \to \boxed{1.8 \: hrs \: > 1.6 \: hrs}[/tex]

Explanation:

[tex]since \: velocity \: is \: given \: as \to \\ v = \frac{d}{t} \\ then \: the \: time \: is \to \\ t = \frac{d}{v} \: since \: (d) \: is \: constant \: in \: this \: case \to \\ when \: (v\: is \: 100 \: km {(h)}^{ - 1} ) \: then \: the \: time \: is \to \\ t = \frac{160}{100} = 1.6 \: hrs \\ \\ when \: (v\: \: is \: 90 \: {km(h)}^{ - 1}) \: then \: the \: time \: is \to \\ t = \frac{160}{90} = 1.7777777778 \\ hence \: the \: time \: will \: be \: \boxed{1.778 \: hrs}[/tex]

♨Rage♨

Answer:

165

Step-by-step explanation:

sorry if wrong - pls mark brainliest <3

Answer:

Yes

Step-by-step explanation:

Answe

yes

Step-by-step explanation:

3/4ths is equal to .75 so its more tha it

Answer:

the third number is 70000

Answer:

[tex]24x(3 \times 2) 4x + 2y + 6 = \\ 576x {}^{2} + 2y + 6[/tex]

Step-by-step explanation:

[tex]if \: 24x(3 \times 2) 4x + 2y + 6 \\ = 576x {}^{2} + 2y + 6 \\ \\ \\ \\ \\ ♨Rage♨[/tex]

Answer:

576x + 2y + 6

Step-by-step explanation:

so let's work this out

first as you can see we need to work this out in BODMAS Method, but there are also expression.

First do the brackets

3 x 2 = 6

so it is simplified to

24x X 6 X 4x + 2y + 6

We can multiply 24x to 6, even if it doesn't have the same pro numeral since, when multiplying we don't have to look for pro numeral, but if we are adding or subtracting, we can't add or subtract a number with a number that doesn't have the same pro numeral.

so

24x X 6 = 144x X 4x = 576x

Then it is simplified to

576x + 2y + 6

we can't simplify it anymore, since it doesn't have the same pro numeral.

Answer = 576x + 2y + 6

Hope you understand

:-)

Step-by-step explanation:

Hello

According to fithaghores law:

[tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]

So

[tex] {5}^{2} + {12}^{2} = 25 + 144 = 169 \\ {c}^{2} = 169 \\ c = \sqrt{169 } = 13[/tex]

Let's continue

Tan A = a/b= 5/12

So A is about 22 or 23 degrees.

You know sum of the triangle angles are 180

So sum 90 +23

Then 180-(90+23)=180-113=67

B is about 67 degrees.

I hope this help you.

Answer:

Both 79°.

Step-by-step explanation:

In geometry, when an angle is said to be bisected, it implies that the angle is divided into two equal parts.

Therefore, if an angle that measures 158° is bisected, it is divided into two equal angles. That is:

[tex] \frac{158}{2} = 79 [/tex].

Therefore, the bisecting of an angle of 158° will result into two resulting angles of 79° each.

Answer:

their average present age should be 40

Step-by-step explanation:

they were 35, 5 yrs ago. just add the 5yrs to 35 yrs old and you will get their present age.

Answer:

Step-by-step explanation:

Average age 5 years ago: 35

Sum of ages 5 years ago: 2(35), or 70

Sum of ages now: 70 + 2(5), or 70 + 10 = 80

Current average: 80/2 = 40

So, their average age is 40!

Hope this helps :)

Answer:

8:15

Step-by-step explanation:

Because the two figures are similar, we know that one of them is enlarged.

So, the ratio would be the side of the smaller length to the side of the larger length.

In this case, 8 and 15 are both on the same side in terms of both figures, so you ratio would be 8:15