Need help to solve Solving system of equation by Substitution method ( standard form)
y= -7x-23
3x-4y= 30

This is what I have so far, but I'm stuck at the last part where I have to divide -25x with 122 which gave me a decimal number. ​

Answer:

A) 31.4

B)78.5

Step-by-step explanation:

A)2(pi)(r)

2*3.14*5=31.4

B)(pi)(r^2)

3.14*5^2=78.5

Answer:

Each pen costs $6

Step-by-step explanation: $40 total -$10 from the book=$30 left.

$30 left divided by 5 pens = $6 each pen.

Answer: $6

Step-by-step explanation:

This is because you got a book for $10 so you would first minus 10 for the $40 you have and then you have $30 dollars left and 6 x 5 is 30 so then when you add back 10 and the 30 dollars you get the total amount of money.

Answer:

Isosceles triangle basically has two equal sides and angles opposite to these equal sides are also equal.Therefore

50° = 2x°

50/2 = x

25 = x

There fore value of x is 25.

so,angle B = 2 × 25

hence angle B is 50

That's all i can solve, I'm also kinda stuck.

hope this helped

Answer:

A, B, C and D

Step-by-step explanation:

The ASA rule states that:

If two angles and the included side of one triangle are equal to two angles and included side of another triangle, then the triangles are congruent.

Answer:

No

Step-by-step explanation:

Sooooooooooooo no

P.S. The answer is accually (Deleted)

Answer:

it is not correct

Step-by-step explanation:

the answer is instead of 55 its 73

if this is wrong im sryyyyy

Answer:

14 months.

Step-by-step explanation:

3,450 - 8,650 = 5,200 divided by 350 = 14 months or 14.8 months if the answer requires a decimal.

Answer:

Step-by-step explanation:

Answer:

The correct answer is D

Step-by-step explanation:

I hope this helps!

Answer:

Now 7 remains without a pair and therefore 7 should be multiplied to 112 to make it a perfect square. Similarly 28 should be multiplied to 784 to make it a perfect cube.

Step-by-step explanation:

112 = 2⁴ * 7.

Next power after 2⁴ with a cube power = 2⁶.

Next power after 7 with a cube power = 7³.

Therefore k = 2² * 7² = 196.

Answer:

she travel 2hours and45 mins

Step-by-step explanation:

division

Answer:

33, 35, 37

Step-by-step explanation:

33 + 35 + 37 = 105

A)  2/3....

edited answer

B). 3/10

Answer:

it divides by five

Step-by-step explanation:

500/5=100

100/5=20

20/5=4

4/5=0.8!

Brainliest pls

Answer:

the amount of alex's monthly payment.

Step-by-step explanation:

he will need to pay each new month the same amount after a while.

The meaning of the slope in this equation will be ''the monthly payment pay by Alex for a new cell phone''.

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

Alex bought a new cell phone.

And, The amount that he will have to pay the cell phone company, C, is described by the equation;

⇒ C=24m+75

Where, m represents the number of months during which Alex will make payments.

Now,

Since,  The amount that he will have to pay the cell phone company, C, is described by the equation;

⇒ C = 24m+75

Where, m represents the number of months during which Alex will make payments.

Here, The value of slope = 24

Clearly, This represents the monthly payment pay by Alex for a new cell phone.

Thus, The meaning of the slope in this equation will be ''the monthly payment pay by Alex for a new cell phone''.

Learn more about the equation of line visit:

https://brainly.com/question/18831322

#SPJ2

Step-by-step explanation:

√a is defined only when a >= 0.

Therefore for √4x * √(x + 2) to be defined, both 4x and x + 2 must be non-negative.

When 4x >= 0, x >= 0.

When x + 2 >= 0, x >= -2.

x >= 0 and x >= -2, therefore we have x >= 0. (D)

Answer:

5(9x + 2y + 10)

or

x = 0

y = -5

Step-by-step explanation:

If you are just factoring this, you will factor a 5 out from everything.

5(9x + 2y + 10)

or if you are trying to solve just isolate one of the variables and then substitute it into the original equation

45x + 10y = 50

10y = 50 - 45x

y = 5 - 4.5x

45x + 10(5-4.5x) + 50

45x + 50 - 45x + 50

x=0

45(0) + 10y + 50

0 + 10y + 50

10y + 50

10y = -50

y = -5

and it would be x = 0 and y = -5

Answer:

cos and sec are positives bc it is in the 4th quadrant

Answer:

Math

Step-by-step explanation:

I hope ican help sorry

Answer:

3^5

Step-by-step explanation:

Keep dividing by 3 until you get to 1. Number of times you divided is the power.

243

81

27

9

3

1

Answer:

10 minutes would be 120 candy bars.

1 minute would be 12 candy bars.

7 minutes would be 84 candy bars.

Step-by-step explanation:

For 10 minutes you multiply 60 times 2, which would be 120 candy bars.

For 1 minute you divide 60 by 5, which would be 12 candy bars.

For 7 minutes you would add 60 and 24, which would be 84 candy bars.  

Answer: 90 stands

Step-by-step explanation:

Mistake was made in question. It should be, ''...which accounts for /...''

There are 30 stands and this translates to 1/3 of the total stands.

Assume the number of total stands is x:

1/3 *  x = 30

x = 30 ÷ 1/3

x = 90 stands

Answer:

root (29^2 - 20^2)

=root(841-400)

=root 441

=21

Answer: Y = 2/3x - 14/3

Answer:

2/3

Step-by-step explanation:

y+2=2/3 (x-4)

1. multiply parentheses (y+2=2/3x-8/3

2. subtract 2 from both sides (y=2/3x-2/3

3. 2/3x is the slope

Answer:

The correct answer is 28.

Step-by-step explanation:

Actually Jada makes problem simpler by adding and subtracting 1

that is

87 ₋ 59 ₋1 ₊ 1

so there would be no effect on our final answer because we have added 1 and also subtracted 1

Now,

87 - 59 -1 + 1

87 - 60 +1                ( ∵ -59 - 1 = -60 )

27 + 1                       (∵ 87 - 60 = 27 )

28

so the final answer is 28 .

Answer:

pedro

Step-by-step explanation:

in 14 minutes resham can read 6 pages and pedro can read 8 just x2 on resham

Answer:

1. between 4 and 4.5

2. between 3 and 3.5

3. between 5.5 and 6

Step-by-step explanation: