Write the expression in expanded form.
(4.2z)(-5y-3)

Answers

Answer 1
the answer is -21yz - 12.6z

Related Questions

A train travels 1 kilometre in 1 minute 20 seconds. Picture of steam train Question prompt At this rate, how many kilometres will the train travel in 1 hour?

Answers

Answer:

45km

Step-by-step explanation:

Distance covered in 1min 20sec (80sec) = 1km

Distance covered in 1 min (60sec) = 1km/80sec

Distance covered in 1Hr (3600sec) = (1/80)*3600 = 45km.

answer in scientific notation.
4,672,000

Answers

Answer:

4.672 × 10⁶

Step-by-step explanation:

HELP. NEED NOW. WILL MARK BRAINLIEST.
Use the method of completing the square to transform the quadratic equation into the equation form (x+p)^2.
-6x^2+-6x+12=0

Answers

Answer:x=1 or x=−2

Step-by-step explanation:

Calculate 18% tip on a 6250 dinner bill

Answers

The 18% tip would be 1,125 therefore, leading the total to be 5125. :)

PLEASE HELP!! Which of the following are considered skew lines?

A- AC and CD
B- DH and BF
C- EG and FH
D- AE and GH

Answers

Answer:

A

Step-by-step explanation:

Hope this helps hope you get it right

can you help me with this please​

Answers

Answer:

a)  y = 2 x - 1

b)  y = - x + 7

c)  y = 7 x + 2

Step-by-step explanation:

Use a pair of (x1, y1) and (x2, y2) points to find the equation of the line for each tables:

a) (5, 9) and (10, 19)

slope: (y2 - y1) / (x2 - x1) = (19 - 9) / (10 - 5) = 10 / 5 = 2

Then  y = 2 x + b

solve for b in:  9 = 2 (5) + b

b = 9 - 10 = -1

Then   y = 2 x - 1

b) (2, 5) and (5, 2)

slope: (y2 - y1) / (x2 - x1) = (2 - 5) / (5 - 2) = -3 / 3 = -1

Then  y = - x + b

solve for b in:  5 = - (2) + b

b = 5 + 2 = 7

Then   y = - x + 7

c) (3, 23) and (6, 44)

slope: (y2 - y1) / (x2 - x1) = (44 - 23) / (6 - 3) = 21 / 3 = 7

Then  y = 7 x + b

solve for b in:  23 = 7 (3) + b

b = 23 - 21 = 2

Then   y = 7 x + 2

What is the vortex of the quadratic function fox (x-8)(x-2)?

Answers

Answer:

Vertex is (5,-9)

Step-by-step explanation:

Answer: The vertex is (5,-9).

Step-by-step explanation:

The figure below shows an upside-down pyramid with a square base.
Which shape does the intersection of the horizontal plane with the pyramid look like?

Answers

Answer:

B

Step-by-step explanation:

A square pyramid is one with a square base. The correct option is B.

What is a square pyramid?

A square pyramid is one with a square base. It is a right square pyramid with C4v symmetry if the top is perpendicular to the centre of the square. It is an equilateral square pyramid if all edge lengths are equal.

The place at which the up-side down pyramid will intersect with the plane will be a square.

Hence, the correct option is B.

The complete question is:

If a vertical plane cuts through a square pyramid down from the vertex, which of the following best describes the shape of the cross-section?

A. Pentagon

B. Square

C. Rectangle

D. Triangle

Learn more about Square Pyramid:

https://brainly.com/question/15219357

#SPJ2

What are the solutions to the equation y^2-1 = 80?

Answers

Answer:

y^2-1=80

y^2=81

y = positive and negative 9

y2−1=80

Step 1: Add 1 to both sides.

y2−1+1=80+1

y2=81

Step 2: Take square root.

y=±√81

y=9 or y=−9

Answer:

y=9 or y=−9

what is the area of a rectangle whose length is (2x-1) cm and whose width is (X+2) cm?

help.​

Answers

Answer:

2x^2 + 3x - 2

Step-by-step explanation:

=> area of rectangle = length*width

=> length = (2x -1)

=> width = (x + 2)

=> area = (2x - 1) (x + 2)

=> area= 2x(x + 2) - 1(x + 2)

=> area = 2x^2 + 4x - 1x - 2

=> area = 2x^2 + 3x - 2

hope it helps

AGAIN SORRY BUT PLS HELP WILL MARK YOU BRAINLIEST AND GIVE 5 STARS IF UR RIGHT!​

Answers

Answer:

Scale factor=8

Step-by-step explanation:

height =(64/8=8)

Length (40/5=8)

Hope this helps ;)

Answer:

Scale Factor: 1/8

Step-by-step explanation:

8/64 simplified (divided by 8) = 1/8

5/40 simplified (divided by 5) = 1/8

Determine whether the following statement is true or false.
The graph of f(x) = (x + 2)2 + 4 has its vertex at (2,4).
Choose the correct answer below.
O True
0 False

Answers

Answer:

Step-by-step explanation:

No it doesn't. When you get stuck on a question like this one, you should go to Desmos and graph the equation. I've done that for you.

Correctly stated the equation should read f(x) = (x + 2)^2 + 4

As you can see from the graph the vertex is at -2,4. To find the x value of the vertex, create a small equation

x + 2 = 0

x = - 2

That will turn what is inside the brackets into 0. The value for x is always what will turn (x + a) to zero.

PLS HELP ASAP! GIVING BRAINLIST!

Answers

D is your answer. 6a^2 b^2(2a - b)

A rectangular room must have a perimeter of 20 feet and an area of at least 20 square feet. Describe the possible widths of the room. Round your answers to the nearest tenth of a foot.

Answers

Answer:

Step-by-step explanation:

A rectangular room must have a perimeter of 20 feet and an area of at least 20 square feet. Describe the possible widths of the room. Round your answers to the nearest tenth of a foot

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

L + W = 10 --> W = 10 - L

---

L*W >= 20

----

Solve L*W = 20

L*(10 - L) = 20

-L^2 + 10L - 20 = 0

The perimeter of a regular hexagon is 24x + 48. Which expression below can represent the
length of one side?
А 3x + 6
B 6x + 12
c 4x + 8
D 8x + 16

Answers

Answer:

I believe it would be D, sorry if I didn't get it right!

Step-by-step explanation:




13. Tikboy earns P 320 a day. This is 4% of her monthly income. How much is her monthly incom
a. 800
b. 80
c. 8,000
d 80,000

Answers

Answer:

b is the answer okkkkkkkkkkkkkkkk

320 4%
X 100%
X= 320•100/4
X=8,000

Find the volume and explain your answer round to the nearest tenth!!

Answers

I think the answer is 616m^3

Answer the photo below
Answer in detail
TY

Answers

To find the area of said parallelogram you use the equation A=b*h then you plug in the numbers A=24*8 which ultimately gives you A=192cm^2

Which value for w makes the equation TRUE? − 8 w + 2 = 3
A. -1/2
B. -1/8
C. 8
D. 9

Answers

Answer:

B. -1/8

Step-by-step explanation:

A. -8(-1/2) + 2 = 6 (incorrect answer)

B. -8(-1/8) +2 = 3 (correct answer)

C. -8(8) + 2 = -62 (incorrect answer)

D. -8(9) + 2 = -70 (incorrect answer)

I hope this helps :)

3w-1 divided by 3 minus 2w+1 divided by 3 =1

Answers

Answer:

w = 5

Step-by-step explanation:

(3w - 1) ÷ 3 - (2w + 1) ÷ 3 = 1

(Graph, just switch w to x)

Answer:

higkygbjoknmmnnnbv

Which of the following fractions is equivalent to 3/8


️ 6/14


️9/24


©️4/9


R 15/35

plzzz help I'm on a test I'll give u brainliest​

Answers

Answer:

9/24

Step-by-step explanation:

This is because when we multiply 3/8 with 3 in both numerator and denominator we get,

[tex] \frac{3 \times 3}{8 \times 3} = \frac{9}{24} [/tex]

Hence, 9/24 is required answer.

Answer:

9/24

Step-by-step explanation:

Fraction             Equivalent Fractions

3/8          6/16               9/24

will mark brainliest and rate 5/5

Answers

B OR D IT WAS confusing.

Step-by-step explanation:

I tried different equations multiple ways I'm pretty sure I did it wrong

Answer:

Here, hope that answers your question

Amanda's computer weighs 56 ounces. How many pounds does it weigh? Amanda's computer weighs______pounds. What is the answer ?

Answers

Answer:

Amanda's computer weighs 3.5 pounds

Step-by-step explanation:

33 m
44 m
What is the length of the hypotenuse?
C=
meters

Answers

Answer:

3

Step-by-step explanation:

Use the reverse form of the pythagorean theorem.

c^2 - b^2 = a^2

25 - 16 = 9

square root of 9 is 3

Solve.

-5p + 28= 13

p =

Answers

Answer:

3?

Step-by-step explanation:

Answer:

p=3

Step-by-step explanation:

-28 on both sides. should come up with this:

-5p = -15

now divide 5 with both sides. should come up with this

p=3

then youre done!!! hope this helps have a good day :)

find the difference between (14-3x) and (-9x+7)

Answers

Answer:

Step-by-step explanation:

The difference between 14 - 3x and - 9x + 7 is

= 14 - 3x - ( - 9x + 7)

= 14 - 3x + 9x - 7

= 6x + 7

hope it helps :)

0.6 + 15 b + 4 = 25.6.

Answers

Answer:

0.6 + 15b + 4 = 25.6

15b +4 = 25

15b = 25 - 4

15b = 21

b = 21/15

b = 7/5

hope it helps

Answer:

Exact Form:

b=7/5

For which value of theta is sine theta = negative 1?

A unit circle is shown. A radius with length 1 forms angle theta in the first quadrant.
StartFraction pi Over 2 EndFraction
Pi
StartFraction 3 pi Over 2 EndFraction
2 pi

Answers

Answer:

1) 270 degrees

2)  pi/4 rad

Step-by-step explanation:

1.) For which value of theta is sine theta = negative 1?

Given

sintheta = -1

theta = arcsin(-1)

theta = -90degrees

Since sin is negative in the third and 4th quadrant

In the third quadrant, theta = 180 + 90 = 270degrees

In the fourth quadrant, theta = 360 - 90 = 270 degrees

Hence the required value of theta is 270degrees

2) Given the radius of the circle to be 1, the y axis value will also be 1 units

Opposite = 1

adjacent = 1

hyp = √1²+1²

hyp = √2

sin theta = opp/hyp

sin theta = 1/√2

theta = arccsin(1/√2)

theta = 45 degrees

Express in radians

45 degrees = pi/4 radians

Hence the required angle in the first quadrant is pi/4 rad

Answer:

3pi/2

Step-by-step explanation:

that is only one that makes sine negative. others make it 0 or positive

Margie wants to collect 3600 cans of food to donate to the community food bank.She plans to collect equal number of can for 4 months how many cans she should collect

Answers

Answer:

If its per month then its 900

Step-by-step explanation:

3600/4 = 900

900*4 = 3600

Without solving what can you tell about the solution

Answers

Answer:

n has to be negative

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