Solve the system.
x + 4y +z = 12
y – 3z = -7
z = 3
Enter your answer as an ordered triple.
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Answer:

Step-by-step explanation:= 21/4 divided by -5/2

= 21/4 x -2/5. flipped and multiplied

= -21/10

= -2 1/10

Answer:

-2 1/10

Step-by-step explanation:

5 1/4 = 21/4

-2 1/2 = -5/2

21/4 ÷ -5/2=-21/10 = -2 1/10

Answer:

0.125 is the answer of 1/8

Hey there!

“ -1 over 8”

= -1/8

= -1 ÷ 8

= -0.125

Therefore, your answer is: -0.125

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Guide:

2 negatives = positive

1 negative & 1 positive = negative

2 positives = positive

1 positive & 1 negative = negative

Answer:

15

Step-by-step explanation:

20/25 = 4/5

12 * 5/4 = 15

Hey there!

-2(7a + 9b)

DISTRIBUTE -2 WITHIN the PARENTHESES

= -2(7a) - 2(9b)

= -14a - 18b

Therefore, your answer is: -14a - 18b

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Step-by-step explanation:

h

Answer:

A. This conclusion was drawn using the law of detachment

Step-by-step explanation:

Definition:

Law of Detachment

If p equals q and p is also true. Then q is true.

if a number is a whole number, then it is an integer.

3 is a whole number (true statement) , so it 3 is an integer. (must be true)

Answer:

y = ½x - 4

Step-by-step explanation:

Given the linear equation in point-slope form, y + 2 = ½(x - 4):

To transform the equation into its slope-intercept form, y = mx + b:

y + 2 = ½(x - 4)

Distribute ½ into the parenthesis:

y + 2 = ½x - 2

Subtract 2 from both sides:

y + 2 - 2 = ½x - 2 - 2

y = ½x - 4 ← This is the slope-intercept form.

Answer:

Multiply the coordinate by the scale factor, 1/5 to get (7/25,-5/20).  You can simplify this to (7/25, -1/4)

Answer:

4

Step-by-step explanation:

( x1, y1 ) = ( 5, 3 )

Here,

x1 = 5

y1 = 3

( x2, y2 ) = ( 6, 7 )

Here,

x2 = 6

y2 = 7

Formula : -

Slope = ( y2 - y1 ) / ( x2 - x1 )

Slope = ( 7 - 3 ) / ( 6 - 5 )

= 4 / 1

Slope = 4

Answer:

(y−3)=4(x−5)

Step-by-step explanation:

Point slope form is defined by the formula [tex]y-y_{1}=m(x-x_{1})[/tex]

First, you find the slope using the slope equation [tex]\frac{y_{2} -y_{1}}{x_{2}-x_{1}}[/tex]. (7−3)/(6−5)=4. Then you plug it back into the point slope form equation, and also plug in the points from y1 and x1.

This is also y=4x−17 in slope-intercept form or −4x+1y=−17 in standard form.

Answer:

-42

Step-by-step explanation:

Answer:

(1,-4) is in quadrant IV.

Step-by-step explanation:

Answer:

x = [tex]\frac{16+b-4a}{4}[/tex]

Step-by-step explanation:

4(a + x) - b = 16 ( add b to both sides )

4(a + x) = 16 + b ← distribute parenthesis on left side

4a + 4x = 16 + b ( subtract 4a from both sides )

4x = 16 + b - 4a ( divide both sides by 4 )

x = [tex]\frac{16+b-4a}{4}[/tex]

This doesn’t make since

Answer:

She used 5.7 pounds

Step-by-step explanation:

Asked how much she used during summer so i think we subtract 20 out of 14.3 which gives us 5.7

Answer:

5.7 pounds

Step-by-step explanation:

20 pounds - 14.3 pounds = 5.7 pounds

AB=9m and BC=3m

Using Pythagoras theorem, In ΔABC

(AC)² +(AB)² +(BC)²

⇒(AC)² =(9)² + (5)²

⇒(AC)² =81 + 25

⇒(AC)² =106

⇒AC=10.3m

=AC+CB=10.3+3=13.3m

Answer:

none just divide and get 12.57

Answer:Explanation is in a file

Step-by-step explanation:cuft.ly/4RqtIvk

uhm, i think it would be 550 but im not entirely sure.

Answer:

550

Step-by-step explanation:

220 = 40%

5.5 = 1%

5.5 x 100 = 1% x 100

550 = 100%

Answer:

the answer is 103!

Step-by-step explanation:

Hope this helps :)

180°-77°=103 so your answer would be 103

Answer:

here ..

length=6cm

breadth=4cm

height=5cm

we know that,

Total Surface Area of Cuboid, (S )= 2 (lb + bh + lh)

=2(6*4+4*5+6*5)

=2(24+20+30)

=2*74

=148

Answer:

Suzanne's lessons are 20 minutes long.

Jim's lessons are 50 minutes long.

Step-by-step explanation:

Jim's lessons = 30min longer than Suzanne's lessons

Suzanne's lessons = 1/3 of Pedro's lessons

Pedro's lessons = 60min

First, you need to find Suzanne's lesson time because her lessons are linked to Pedro's. Since you know Pedro's lesson is 60 minutes long and Suzanne's are a third of that you do: 60/3. Which is 20. So you know Suzanne's lessons are 20minutes long.

Next, since you know Suzanne's lessons are 20minutes long and Jims are 30mins longer than Suzanne's you do: 20+30. Which equals 50minutes. So, Jim's lessons are 50minutes long.

Answer:

Step-by-step explanation:

its 70 min together

The product of the Expression is 3/ (a-2).

In mathematics, an expression is a phrase that has at least two numbers or variables and at least one math operation. Addition, subtraction, multiplication, or division are all examples of math operations. An expression's structure is as follows:

(Number/variable, Math Operator, Number/variable) is an expression.

We have,

(2a - 7)/ a x (3a²)/  (2a² -11a + 14)

Now, simplifying the expression as

(2a - 7)/ a x (3a²)/  (2a² -11a + 14)

= (2a - 7)/ a x (3a²)/  (2a² -7a - 4a + 14)

= (2a - 7)/ a x (3a²)/  a (2a -7) -2 (2a- 7)

= (2a - 7)/ a x (3a²)/ (a- 2)(2a-7)

= 3a² / a(a-2)

= 3/ (a-2)

Thus, the product is 3/ (a-2).

Learn more about Expression here:

https://brainly.com/question/14083225

#SPJ7

Eh?..

[tex] \: \: \: [/tex]

Answer:

Step-by-step explanation:

"jisoo"

j = 1

i = 1

s = 1

o = 2

[tex]p = \frac{n!}{k!} = \frac{5!}{2!} = \frac{5 \times 4 \times 3 \times 2 \times 1}{2 \times 1} = \frac{120}{2} [/tex]

P = 60 word order

------------

"cantik"

c = 1

a = 1

n = 1

t = 1

i = 1

k = 1

[tex]p = n! = 6! = 6 \times 5 \times 4 \times 3 \times 2 \times 1[/tex]

P = 720 word order

------------

"sudah"

s = 1

u = 1

d = 1

a = 1

h = 1

[tex]p = 6 \times 5 \times 4 \times 3 \times 2 \times 1[/tex]

P = 120 word order

Step-by-step explanation:

just think about the basic formulas for area and perimeter of rectangles, and what pieces of information we already have directly.

area = length × width

perimeter = 2×length + 2×width = 136 m

=> length + width = 68 m

then we know

length = 2×width + 8

this we use as substitute in the simplified perimeter equation :

2×width + 8 + width = 68

3×width + 8 = 68

3×width = 60

width = 20 m

and therefore

length = 2×width + 8 = 2×20 + 8 = 40+8 = 48 m

and now we can calculate the area :

area = length×width = 48×20 = 960 m²

please consider that for a length or distance we use m (or other length units), for and area then m². for a volume then m³. as a basic unit for an area is a square. and for a volume a cube.

Answer:

I'm not sure, but I think it's $176.4

Step-by-step explanation:

9x4= 36

36= Square foot

36 x 4.89= 176.4

Answer:

36

Step-by-step explanation:

Answer:

76

Step-by-step explanation:

Answer:

A. The rate of change of this graph is 3

B. The rate of change represent 3 Souvenirs are purchased in one day of vacation.

Step-by-step explanation:

A. By looking at the graph the x axis is changing by 1, and the y axis is chaning by 3 so the rate of change is 3.

B. The rate of change is 3 means 3souvenirs are purchases in 1 day of vacation.

Answer:

3i√11

I believe that’s the square root