8th grade math! Please help. timed test

8th Grade Math! Please Help. Timed Test

Answers

Answer 1

Answer: c

Step-by-step explanation:


Related Questions

How are ∠1 and ∠4 related *please help*

Answers

Answer: They are adjacent

Step-by-step explanation:

Find the Area of the Circle.
a) 200.96
B) 25 12
C)30.24
D) 20.96 in
PLEASE HELP MEEEEEE

Answers

200.96
(A=pi*r^2)
It’s right just trust me.

What is the slope of the line that passes through the points (0, -4)) and (-2, -1)

Answers

Answer:

Step-by-step explanation:

y = mx + b

m is the slope (what you want)

b is the y-intercept, which is the value of y when x = 0

Oh, right, we already have b, isn't that great!

Given point (0, -4), so b = -4

Point (-2, -1), where x = -2 and y = -1

-1 = -2m -4 (solve for m)

3 = -2m

m = -3/2

Check:

y = -3x/2 -4

y = -3(-2)/2 -4  -> should get y = -1

y = 3 -4 = -1

Yay, we have the answer!

(-3,-3) rotated counterclockwise about the origin

Answers

Answer:

4.3

Step-by-step explanation:

please help with graph (will mark brainliest!!)

Answers

Answer:

The answer is in the screenshot.

Step-by-step explanation:

Ryan wants to buy a new guitar that costs $325.00. He already has $75 in his account and makes $20 per day. How many days will he have to work before he can buy the guitar?

Answers

Answer:I pretty sure it will be 12.5
I subtracted the total cost for the guitar by the money he already had and got 250
Then I did 250/20 and got 12.5
250 is the money that he still needs for the guitar

Hope it helps

Trina's car uses 12 gallons of gas to travel 132 miles. If she has 6 gallons of gas in the tank, how much more gas will she need to drive 220 miles?
A. 20 gallons
B. 11 gallons
C. 18 gallons
D. 14 gallons

Answers

Answer:

D

Step-by-step explanation:

132 divide w/ 12 u get 11

b and c are gone

multiple 20 x 11 u get 220

but bc u already have 6 gallons its 14

20-6

What are two numbers that add to 45 and multiply to 500

Answers

Answer:

It would be the numbers 20 and 25.

MATH HELP. ( please answer both questions ) thank you !

Answers

Answer:

A. 3500

B. The wall is unidentified, therefore we have to multiply 6 and 50 to recieve a, the height.

Step-by-step explanation:

IS IN SPANISH BUT CAN SOMEONE HELP ME?, i need to find the area for the following

Answers

Answer:

10.2 +16.6 = 26.8 x 4.5 = 120.6 divided by 2 = 60.3

Answer:

60.3 cm

Step-by-step explanation:

Be sure to mark me Brainliest!!! I am 10000% this is correct!

Write the number below in scientific notation.
450,000,000
O A. 4.5 x 107
B. 4.5 x 108
O C. 4.5 x 10‐⁷
D. 4.5 x 10​⁹

Answers

Answer:

B: 4.5 * 10^8

Step-by-step explanation:

I did the test and got it right

Solve this trinomial
Z^2 + z = -20

Answers

Answer:

your answer is a complex number making your question wrong

Step-by-step explanation:

First z²+z+20=0, just to make it a quadratic equation, so we can use the quadratric formula:

x=( -b±√b²-4ac)/2a

so to find a b and c we compare

YOUR QUESTION SHOULD BE Z² +Z-20=O.


A2 N and an 8 N force pull on an object to the right and a 4 N force pulls to the left a 0.5 kg
object. What is the acceleration on the object?

Answers

Answer:

12 units/time²

Step-by-step explanation:

F = 2 + 8 - 4 = 6

F = ma

6 = 0.5a

a = 12

It is 12 the answer

In a standard Normal distribution, 1.5% of observations lie above which z-score?
Find the z-table here.
A -2.17
B -1.03
C 1.03
D 2.17

Answers

Answer:

2.17

Step-by-step explanation:

math is so hard but I'm learning

When the door was left open, 36 pigeons flew the coop. If this was 40 percent of all the pigeons, how many pigeons were there originally?​

Answers

Answer:

100%

Step-by-step explanation:

Yall plzz helpp I dont want to fail math "what is the longest walking stick that can be placed in the bottom of a truck of length 80 cm and width 60cm"

Answers

Given:

Length of the truck = 80 cm

Width of the truck = 60 cm

To find:

The longest walking stick that can be placed in the bottom of a truck.

Solution:

The longest walking stick that can be placed in the bottom of a truck is the diagonal of the truck.

We know that, the diagonal of a rectangle is:

[tex]d=\sqrt{l^2+w^2}[/tex]

Where, l is the length and w is the width.

Putting [tex]l=80[/tex] and [tex]w=60[/tex], we get

[tex]d=\sqrt{(80)^2+(60)^2}[/tex]

[tex]d=\sqrt{6400+3600}[/tex]

[tex]d=\sqrt{10000}[/tex]

[tex]d=100[/tex]

Therefore, the length of the longest walking stick that can be placed in the bottom of a truck is 100 cm.

Answer the 4 questions please.

Answers

Answer: 1. y=2/3x+4

2. y=-4x-7

3. y=3x-5

4. y= -5/4x + 2

Hope I helped! :)

Step-by-step explanation:

Doug is buying a computer monitor that is 15 inches tall and has a distance of 39 inches between
opposite corners. What is the width of Doug's new monitor?

Answers

15*39 so it would be at least 200

On a map of Florida, the legend reads 1 inch = 25 miles. If The distance between Tallahassee and Jacksonville is approximately 160 miles, in inches, between the two cities?

A. 6 4/25 inches
B. 6 1/4 inches
C. 6 2/5 inches
D. 6 1/2 inches

Answers

Answer:

1 inch = 25 miles

x inches = 160 miles

1/25 = x/160

160=25x

x=6 2/5 inches

C is correct.

Let me know if this helps!

The answer would be 1in =25 miles

What are the coordinates of the image of AABC after a dilation with center (0,0) and a scale factor of 3? ​

Answers

Answer:

factor of 3

Step-by-step explanation:

Which of the following add carbon dioxide to the atmosphere

Answers

Answer:

Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.

Step-by-step explanation:

Answer:

Step-by-step explanation: The first one on the left

A chess Club with 60 members is electing a new president. Donna received 42 votes. What percentage of the club members voted for Donna?

Answers

She received 70%
42/60*100= 70

PLEASE HELP ME I WILL GIVE BRAINLYEST

What is 1,432,000,000,000 equivalent to?

$1.4 trillion

$14.3 trillion

$143.2 trillion

$1 trillion

Answers

The answer is 1.4 trillion

Answer:

The answer would be 1.4 trillion hope that helps!

Step-by-step explanation:

The ratio 132 : 60 as a fraction is....
The ratio 132 : 60 as a decimal is...
The ratio 132 : 60 as a percent is... %

Answers

Answer:

The ratio 132 : 60 as a fraction is 132/60

The ratio 132 : 60 as a decimal is 2.2

The ratio 132 : 60 as a percent is 220%

Solve the equation below.
2.3.= p + 0.6

Answers

Answer:

p = 1.7

Step-by-step explanation:

What is the explicit formula for the sequence 18, 9, 9/2, 9/4, 9/8

Answers

an = 18(1/2)^(n-1)

Alternatively, you could also do:

an = 36(1/2)^n

Marissa compared coffeepot prices at three different stores. One of the stores advertised a discount, one was an online store that charged shipping,
and one just showed a regular price. The prices are shown below:
Price
Discount
30%
Shipping Cost
NA
$149.49
Name
American
Discounters
The Coffee Hut
The Bean
$91.99
NA
15% of the cost of
the item
NA
$106.49
NA
Part A: Which place is the least expensive place to purchase the coffeepot? Support your answer using words or numbers. (Round to the nearest
cent when calculating.)
Part B: Sales tax for all 3 retailers is 7.5%. What is the cost to purchase the cheapest coffeepot? (Round your answer to the nearest cent.)

Answers

Answer:

American Discounters is the cheapest.

Step-by-step explanation:

American Discounters:

149.49 - 30%

149.49 - (149.49 * 0.3) = 44.847

149.49 - 44.847 = 104.643

The Coffee Hut:

91.99 + 15%

91.99 + 13.8 = 105.79

The Bean:

106.49

The approximate areas of two states are listed below.

Texas: 2.69×10^5 square miles
Rhode Island: 1.21×10^3 square miles
Determine the difference, in square miles, between the area of Texas and the area of Rhode Island. Write your answer in scientific notation.

Answer: _________________ square miles

Answers

Answer:

2.6779*10^5

Step-by-step explanation:

2.69 * 10^5 - 1.21 * 10^3

This is 2.6779*10^5 :)

The difference between the areas of Texas and the area of Rhode Island is given by equation A = 2.6779 x 10⁵ miles²

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the area of Texas be p = 2.69 x 10⁵ miles²

Let the area of Rhode Island be q = 1.21 x 10³ miles

Now , the difference of areas A = p - q

On simplifying the equation , we get

The difference between the area of Texas and the area of Rhode Island A = 2.69 x 10⁵ miles² - 1.21 x 10³ miles

A = 2.69 x 10⁵ miles² - 1.21 x 10³ miles

A = 10³ ( 2.69 x 100 - 1.21 )

On further simplification , we get

A = 10³ ( 269 - 1.21 )

A = 267.79 x 10³

A = 2.6779 x 10⁵ miles²

Hence , the difference in areas is 2.6779 x 10⁵ miles²

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ7

Please help! Simplify the expression 2^4x3^y/8*3^x

Answers

Answer

the answer is (3×16^x×y)/(8-3^x )

Step-by-step explanation:

Jenae buys some scarves that are $14 each and 2 wallets that each cost $12. Jenae's total is $94. Write an equation that could be used to find s, the number of scarves Jenae buys .

Answers

Answer:

94-(2x12)/14=s

..............

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