8th grade algebra question

8th Grade Algebra Question

Answers

Answer 1

Answer:

x-int : 6,  y-int : 9

Step-by-step explanation:

Hope this helps :)

Let me know if you want a full explanation


Related Questions

Luke wants to send 21 parcels by the Express service.
He does the calculation 20 x £15 = £300 to estimate the cost.
(b)
Explain why Luke's calculation shows the actual cost will be more than £300

Answers

Answer:

Because he has to send one more parcel than the estimation.

Step-by-step explanation:

Find the angle between the given vectors to the nearest tenth of a degree.

u = <-5, 8>, v = <-4, 8>

2.7°
-7.3°
5.4°
15.4°

Answers

9514 1404 393

Answer:

  (c) 5.4°

Step-by-step explanation:

We can simply determine the difference between the angles of the vectors:

  arctan(8/-5) -arctan(8/-4) = 122.005° -116.565° = 5.440°

The angle between the vectors is about 5.4°.

__

Alternate solutions

1) We could also determine the angle of their ratio.

  u/v = (-5 +8i)/(-4 +8i) = (-5 +8i)(-4 -8i)/(4² +8²) = (84 +8i)/80 = 1.05 +0.1i

  angle = arctan(0.1/1.05) = 5.440°

__

2) Tan(a-b) = (tan(a)+tan(b))/(1 -tan(a)(tan(b))

  tan(∠u -∠v) = ((tan(∠u) -tan(∠v))/(1 +tan(∠u)tan(∠v))

  = (-1.6 -(-2))/(1 +(-1.6)(-2)) = 0.4/4.2

  ∠u -∠v = arctan(2/21) = 5.440°

6.
Write an equation of a line with the given slope and y-intercept.
m = (4)/(5), b = 2

A. y= (4)/(5)x - 2

B. y= (4)/(5)x + 2

C. y= (5)/(4)x + 2

D. y= 2x + (4)/(5)

Answers

Answer:

B. y= (4)/(5)x + 2

Step-by-step explanation:

Use the slope-intercept form  

y = m x + b  to find the slope  m  and y-intercept  b .

Slope:  

5

3

y-intercept:  ( 0 , − 2 )

Which is a better estimate for the volume of a conditioner bottle?

1 quart
or
1 Fluid Ounce

Answers

Answer:

1 Fluid Ounce

Step-by-step explanation:

Plz helpppppppppppppp helpppppppppppppp ​

Answers

Answer:

(A).option is correct..54cm2

7(x-2)<2x+3 as a improper fraction

Answers

Answer:

-23/3

Step-by-step explanation:

sorry if i am wrong

-23/3 :)))))) i hope u have a nice day

PLEASE HELP ME WITH THIS I WILL GIVE BRAINLIEST

Answers

Answer:

12, 24, and 60

A certain hurricane travels at 20.88 kilometers per hour. The distance
from Cuba to Key West is 145 kilometers. Write and solve a multiplication
equation to find about how long it would take the hurricane to travel from
Cuba to Key West.

Answers

Answer:

6.94 hours

Step-by-step explanation:

20.88 = 145/t

20.88t = 145

t=145/20.88t

t=6.94

Answer:

6.94 hours

Step-by-step explanation:

plz help i can not figure this out

Answers

Answer: 30 cubic units

Step-by-step explanation:

Since the base has a volume of 2x3 or 6 and he plans on making the height 5 we must mutliply the base by height to get the new voulme so 6*5=30

Answer:30 cubic units

7 of 10
© Brian invests £990 into his bank account. He receives 2% per year simple interest. How much
will Brian have after 4 years? Give your answer to the nearest penny where appropriate.

Answers

Answer:

1071.61

Step-by-step explanation:

That's how much

If the diagonals of a quadrilateral are congruent, is the quadrilateral always a rectangle?

Answers

Answer:

Yes

Step-by-step explanation:

The only quadrilaterals with congruent diagonals are squares and rectangles and squares are technically rectangles so the answer is yes.

If the diagonals of a quadrilateral are congruent. Then the quadrilateral is always a rectangle which is false.

What is a quadrilateral?

The quadrilateral has four sides and four angles. The sum of internal angles is 360 degrees.

It is a polygon with four sides. The total interior angle is 360 degrees. A rectangle's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.

If the diagonals of a quadrilateral are congruent. Then the quadrilateral can be a square or a rectangle.

If the diagonals of a quadrilateral are congruent. Then the quadrilateral is always a rectangle which is false.

More about the quadrilateral link is given below.

https://brainly.com/question/13805601

#SPJ5

HELP PLEASE 2 Based on past experience, a pencil factory owner believes that 3 out of every 150 pencils will be defective in some way. Using this information. What is the best prediction of the number of defective pencils in a shipment of 3.000 pencils?

Answers

First you find out the percentage of 3 out of 150... which is 2% now what is 2% of 3,000?
The answer is 60. You’re welcome.

Lucas is making 12 jumbo muffins to sell at his class bake sale . He has 2 bowls full of batter what fraction of a bowl of batter should Lucas put in each muffin cup ?

Answers

Answer:

1/6 of a bowl of batter

Step-by-step explanation:

Find out how much muffins is needed for 1 bowl.

2 bowls = 12 muffins

1 bowl = 12 ÷ 2 = 6 muffins

Since 1 bowl can fill 6 muffins, it's 1/6

Chloe makes beaded keychains to sell at local craft fairs. To make k keychains, she uses 15k beads. On Saturday, Chloe made 50 beaded keychains. How many beads did Chloe use to make the keychains?

Answers

Answer:

750 beads

Step-by-step explanation: you multiply 15,000 by 50, then removing the 3 extra zeros

Answer:

750

Step-by-step explanation:

what is this equal to
[tex] \frac{a + 8}{2} = \frac{a - 4}{8} [/tex]

Answers

The answer is bc you do 8(a+8)=2(a-4) then it turns to 8a+64=2(a-4) to 8a-2a+64=-8 to 6a=-8-64 to 6a=-72 to the answer A=-12

A computer game was originally priced at $59.99. It was marked down 15%. What was the final price of the computer game?

Answers

Answer: $50.99

Step-by-step explanation:

Given

The computer game is Priced at [tex]\$59.99[/tex]

It is marked down by [tex]15\%[/tex]

Final price is

[tex]\Rightarrow 59.99-15\%\ \text{of}\ 59.99\\\Rightarrow 59.99(1-0.15)=59.99\times 0.85\\\Rightarrow \$50.99[/tex]

Ariana made cookies. She used 3 7/8 cups of flour and 2 1/8 cups of sugar. How much more flour than sugar did Ariana use?

Answers

Answer:

1 6/8 cups of flour

Step-by-step explanation:

Just subtract 2 1/8 from 3 7/8

1 6/8 more flour than sugar

Find the measure of each angle indicated.
23°
128°

Answers

Find the acute angle in the first quadrant used as a reference for

23, 128, 337, 128

Which angle is supplementary to ∠1?

Answers

Answer: angle 2 is supplementary to angle 1
the answer is angle 2

Lakmini decided to measure the circumference of the Earth
using a very long tape measure. She held the tape measure
Im from the surface of the (perfectly spherical) Earth all the
way round. When she had finished her friend said that her
measurement gave too large an answer and suggested taking
off 6 m. Was her friend correct?
[Take the radius of the Earth to be 6400 km (if you need it).]

Answers

Answer:

Step-by-step explanation:

[tex]\Delta C=2\pi(r_2-r_1)\\ \\ \Delta C=2\pi(6400001-6400000)\\ \\ \Delta C=2\pi\\ \\ \Delta C\approx 6.283m\\ \\ \text{So taking off 6 meters is reasonable.}[/tex}

A table is sold hire purchase. The sales price consists of deposit of $306 and six monthly instalments of $60 each. How much does a customer pay for the table?

Answers

Answer: $666

Step-by-step explanation: 306+ 60(6)= 666

I’ll give points but please help me on this and if you don’t know the answer please don’t answer the question thank you

Answers

The figure consists of two thing hemisphere and a cone
The volume of the hemisphere is equal to V = 56.5486678 ft3 or 18pi
And the cone volume is
V = 47.1238898 ft3 or 15pi
The total volume will be 103.6725576ft3
Or 33pi ft3

Use the distributive property to write an expression that is equivalent to 10(10x - 4).

Answers

Answer:

100x-40

Step-by-step explanation:

10*10x and  10* -4

for brainiest:):):):):):):)

Answers

I used 3.14 for pi to solve easier.

6. 6.28

7. 21.98

8. 94.2

What would be the first step in solving the equation 7/9x + 34 = 174?

Answers

Answer:

[tex] \frac{7}{9} x + 34 = 174 \\ => \frac{7x}{9} = 174 - 34 \\ = > \frac{7x}{9} = 140 \\ = > 7x = 140 \times 9 \\ = > 7x = 1260 \\ = > x = \frac{1260}{7} = 180 \\ { \huge{ \pink{x = 180}}}[/tex]

❤️❣️❤️

Line AB contains points A (8, −4) and B (1, −5). The slope of line AB is (5 points) Group of answer choices −7 negative 1 over 7 1 over 7 7

Answers

Answer:

1/7

Step-by-step explanation:

Given that :

Line AB contains points A (8, −4) and B (1, −5)

Slope = Rise / Run

Rise = y2 - y1 = - 5 - (-4) = - 5 + 4 = - 1

Run = x2 - x1 = 1 - 8 = - 7

Slope = Rise / Run = - 1 / - 7

Slope = 1/7

t/12 = 4
solve for the solution

Answers

T/12=4
Then t=12*4=48

Checks can be used to:
make purchases
pay rent
pay bills
all of the above​

Answers

Answer:

all of the above

Step-by-step explanation:

according to your question

The correct choice is all of the above

4x – 5.2y + 6y + 7.9x – 8x *

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\textsf{4x - 5.2y + 6y + 7.9x - 8x}[/tex]

[tex]\huge\text{COMBINE your LIKE TERMS}[/tex]

[tex]\large\textsf{(4x + 7.9x - 8x) + (-5.2y + 6y)}[/tex]

[tex]\large\textsf{4x + 7.9x - 8x =}[/tex]

[tex]\large\textsf{4x + 7.9x = 11.9x}[/tex]

[tex]\large\textsf{11.9x - 8x = 3.9x}[/tex]

[tex]\large\textsf{4x + 7.9x - 8x = 3.9x}[/tex]

[tex]\large\textsf{(3.9x) + (-5.2y + 6y)}[/tex]

[tex]\large\textsf{-5.2y + 6y = 0.8y}[/tex]

[tex]\boxed{\boxed{\large\textsf{Answer: \huge \bf3.9x + 0.8y }}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

3.9x+0.8y

Step-by-step explanation:

4x−5.2y+6y+7.9x−8x

Combine −5.2y and 6y to get 0.8y.

4x+0.8y+7.9x−8x

Combine 4x and 7.9x to get 11.9x.

11.9x+0.8y−8x

Combine 11.9x and −8x to get 3.9x.

3.9x+0.8y

It can also be converted to fraction form:

[tex]\frac{4y}{5}+\frac{39x}{10} = 3.9x+0.8y[/tex]

Is this correct ? What’s the answer??

Answers

Answer:

Im not sure Im sorry Im just trying to get points but I will send to a friend to help

Step-by-step explanation:

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