Mathematics Middle School

PLEASE PLEASE HELP ME IM GOING TO FAIL MY GRADE!!!!!

In a chemistry lab, there are 9.52 grams of a powdered substance in a container. Max needs to place an equal amount of the powdered substance into each of 3 glass plates. The amount of powdered substance he places into each glass plate is 1.98 grams.

Max estimates that there are about 4.5 grams of the powdered substance remaining in the container. Is his statement reasonable?
A.
This is not reasonable because 9.52 grams can be rounded to 9.5 grams and 1.98 grams can be rounded to 2 grams. Since 9.5 − 3(2) = 3.5, there would be about 3.5 grams of the powdered substance remaining in the container.
B.
This is reasonable because 9.52 grams can be rounded to 9 grams and 1.98 grams can be rounded to 2.5 grams. Since 9 − 3(2.5) = 1.5, there would be about 1.5 grams of the powdered substance remaining in the container.
C.
This is reasonable because 9.52 grams can be rounded to 9 grams and 1.98 grams can be rounded to 1.5 grams. Since 9 − 3(1.5) = 4.5, there would be about 4.5 grams of the powdered substance remaining in the container.
D.
This is not reasonable because 9.52 grams can be rounded to 9 grams and 1.98 grams can be rounded to 1 gram. Since 9 − 3(1) = 6, there would be about 6 grams of the powdered substance remaining in the container.

Answers

Answer 1

Answer:

Step-by-step explanation:

it is A because I did this before hope u get a A+

Answer 2

The answer is A because if you really think about it and read it it’s correct

Related Questions

I only have 2 hours helppp

Answers

120 cubic centimeters

math again please help

Answers

Answer:

Step-by-step explanation:

, vb .c c.,v.,c.,b v.b,c.,.bevy b,. cvb,c,v,,v2883/?soo200993

HELPPPP TY IF U HELP ME

Answers

Answer:

Step-by-step explanation:

If you simplify the fraction 45/5 it equals 9

the answer is 45 you have to flip the fraction and multiply

I need so much help whats 45+90 ???

Answers

Answer: 135

Step-by-step explanation:

45 + 90

take 10 of 45 and add it to 90 = 100

100 + 35 = 135

Answer:

135

Step-by-step explanation:

1.) A, B and C are collinear points with coordinates -4, 2 and -7 respectively. Determine which point is between the other two.

2.) A, B and C are collinear points with AB = 5, BC = 9 and AC = 4. Which is between the other two?

3.) If the coordinates of A and B are -5 and 7 respectively and C is the midpoint of line AB, find the CA. What is the coordinate of C?

4.) In ∠ABC, ray BD is the angle bisector of ∠ABC. If the m∠ABD = 2x + 5 and m∠DBC = 5x - 10, find:
a. value of x
b. m∠ABD
c. m∠ABC

Answers

The point between the other two is point A

2. The point between the other two is point A3. The coordinate of C is 14. x = 5, ABD = 15 and ABC = 30

The point between the other two.

Arranging the given points in order, we get:

C (-7) < A (-4) < B (2)

We can conclude that, the point A is between points C and B.

The point between the other two.

Since A, B, and C are collinear, we have:

BA + AC = BC

Substituting the given values, we get:

5 + 4 = 9

9 = 9 --- true

We can conclude that, the point A is between points C and B.

Midpoint of AB

Given that

A = -5

B = 7

We have

Midpoint C = (7 - 5)/2

Midpoint C = 1

The value of x and the angles

Here, we have

Bisector BD

This means that

2x + 5 = 5x - 10

Evaluate

3x = 15

x = 5

So, we have

ABD = 2(5) + 5

ABD = 15

Then, we have

ABC = 2 * 15

ABC = 30

This means that the measure of angle ABC is 30 degrees

Answers

Answer:

W=14×0.35

W 4.9

W=4.9

I hope this helps out

The total number of questions in the biology test are 40.

What is percentage?

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

For one biology test, Jhon correctly answered 14 questions. This gave him a score of 35%.

Let the total number of questions be w.

Now, 35% of w=14

35/100 ×w=14

35w=1400

w=1400/35

w=40

Therefore, the total number of questions in the biology test are 40.

To learn more about the percentage visit:

brainly.com/question/24159063.

#SPJ5

Please Help!!! I will give brainlist if right!!!

Caleb bought a jacket for $52 and 3 shirts for $12 each. The sales tax is 4.5%. How much did Caleb spend for all of the items, including tax?

Round to the nearest cent (hundredth). Include the $ symbol

Answers

Answer:

Caleb spent $91.96 for all of the items, including tax.

Step-by-step explanation:

First, let's calculate the cost of the shirts:

3 shirts * $12 per shirt = $36

Now, let's add the cost of the jacket and the shirts together:

$52 + $36 = $88

Next, let's calculate the amount of sales tax Caleb has to pay:

$88 * 4.5% = $3.96

Finally, let's add the sales tax to the total cost:

$88 + $3.96 = $91.96

Therefore, Caleb spent $91.96 for all of the items, including tax.

Answer:

same as the other guy

Step-by-step explanation:

evaluate -3|x|+2x if x=-5
THIS IS 15 POINTS PLS HELP!!

Answers

Answer:

-3|-5| + 2(-5)

= -3(5) + 2(-5)

= -15 + (-10) = -25

-3!-5!+2(-5)
Switch the absolute value
-3x5-2(-5)
Solve
-25

Which relationships describe angles 1 and 2?

Select each correct answer.

Answers

Answer:

complementary

Step-by-step explanation:

if you add angle 1 and 2 they equal 90 degrees that means it's complementary

Complementary is the answer

Simplify:
(3 · 5) − 10 + 50

Answers

Answer:

Step-by-step explanation:

U dum for this problem

3x5=15

15-10=5

5+50=65029452

Answer: 55.

Step-by-step explanation:

Using PEMDAS rules, first do 3 times 5. (15) after this subtract 10 from 15. You will get 5. Add the 50 at the end, and you will get 55.

I hope this helped you! A brainilist is highly appreciated and helpful! <3

A telephone pole 60 feet high casts a shadow 80 feet long at the same time that a tree casts a shadow 120 feet. What is the height of the tree

Answers

The height of the tree would be 90 feet. To solve the problem, you would need to cross multiply so you would put 60( the height of the telephone pole) over x( the height of the tree) times 80 (the shadow of the telephone pole) over 120 ( the shadow of the tree). You multiply x and 80 and get 80x and multiply 120 and 60 and get 7,200. 80x=7,200, so the last step would be to divide 7,200 by 80 and you get 90. Make sure to add the units also in your answer (feet).

Since a telephone pole is 60 feet and it’s shadow is 80 you would say subtract 60 from 80 and it equals 20 . So that means you would do 120 - 20 and that equals 100

write each expression without using the absolute value symbol |14-(x-6)|
THIS IS 15 POINTS PLSSSSSSSSSSSSSS HELP

Answers

To start, we need to recognize that absolute value is a way of expressing the magnitude of a number, regardless of its sign. Thus, to get rid of the absolute value, we need to consider the two cases in which the expression can have either a positive or a negative sign.

For the case of a positive sign, we can simply write the expression as: 14-(x-6)

For the case of a negative sign, we can multiply both sides of the equation by -1 to get: -14 + (x-6)

Overall, we can express the expression without the absolute value symbol as:

14-(x-6) or -14 + (x-6)

We need the whole equation

puzzle five percent digital escape answer key
I NEED HELP ASAP!!

Answers

1. 70% x 49 = 34.30 - H
2. 20% x 8 = 1.60 - B
3. 112.75 x 20% = 22.55 + 112.75 = 135.30 - I
4. 55% x 15 = 8.25 - G

HBIG

(I hope this is right) (If you need an explanation, let me know!)

CAN SOMEONE PLEASE HELP ME GIVING BRAINLYESTT

Answers

Answer:

(10 / 2) + (1 + 4) - 5

Sorry I cannot answer 10 rn but I will soon

Answer:

9:
-3.8

Step-by-step explanation:

I just did the math- theres not really a explanation...

What scale factor was used to produce figure 1 from figure 2?

two triangles labeled figure 1 and figure 2, where figure 1 has legs that are 2 units long and figure 2 has legs that are 4 units long

4
2
one half
one fourth

Answers

It’s 4 :) hope this helps

Answer: the first dude is wrong the answer is two

Step-by-step explanation:

its double the size of figure 1... so the answer is obviously 2

Linear Inequalities

The length of a rectangle is 5cm less than twice it's width. If the perimeter of the rectangle is no more than 80cm, what are the maximum possible dimensions?

Answers

Answer:

15 cm and 25 cm

Step-by-step explanation:

First let's mark the width with the letter b, and the length with a:

width: b

length: a = (2b - 5)

Then we have an inequality (P = 2a + 2b):

2 × (2b - 5) + 2b ≤ 80

4b - 10 + 2b ≤ 80

6b ≤ 80 + 10

6b ≤ 90 / : 6

b ≤ 15

a ≤ 2 × 15 - 5

a ≤ 25

Answer:15 cm and 25 cm

Step-by-step explanation:

PLEASE HURRYYYY!!!!!!

Answers

Answer:

n-m/800

Step-by-step explanation:

N-m/800

I had this before and got it right

Which angle is vertical to DEA?

Answers

Answer:

[tex]\large\boxed{\tt \angle BEC}[/tex]

Step-by-step explanation:

[tex]\textsf{We are asked for which angle is \underline{Vertical} to} \ \tt \angle DEA.[/tex]

[tex]\large\underline{\textsf{What are Vertical Angles?}}[/tex]

[tex]\textsf{Vertical Angles are 2 angles that are opposite from each other, and are formed}[/tex]

[tex]\textsf{by the same intersecting lines. Vertical Angles also have to share a common Vertex.}[/tex]

[tex]\textsf{*Vertical Angles are also congruent to each other.}[/tex]

[tex]\large\underline{\textsf{What is a Vertex?}}[/tex]

[tex]\textsf{A Vertex marks the point where 2 lines intersect. This is the point where angles}[/tex]

[tex]\textsf{are formed.}[/tex]

[tex]\large\underline{\textsf{Finding the Vertical Angle;}}[/tex]

[tex]\textsf{Our primary focus should be} \ \tt \angle DEA. \ \textsf{Remember that Vertical Angles are primarily angles}[/tex]

[tex]\textsf{opposite from each other. This only leaves one option which is} \ \tt \angle BEC. \ \textsf{Note how}[/tex]

[tex]\textsf{both angles are opposite from each other, and they share a common vertex point.}[/tex]

[tex]\textsf{Lastly, they are formed by the same intersecting lines, which guarantees they're}[/tex]

[tex]\textsf{vertical angles.}[/tex]

HELPPPPPPPPPPPP I NEED HELLP

Answers

He can make 18/5 servings or 3 3/5 servings

3/ (5/6)
3/1 • 6/5
=18/5
3 3/5 servings

Last year, there were 48 members in a chess club. This year, there are 55 members in the club. Find the percent (%) increase in the number of members clubs. Round your answer to the nearest whole number.

Answers

Answer:

hence girls put more effort they are the hardest working people

Answer:

Step-by-step explanation:

i need help with this.

Answers

28 tenths, 2 ones, 8 tenths, the product is 2.8

PLEASEEE HELP GOING TO FAIL!!!

The original price of a ski jacket was $270. It was on sale at a 25% discount. Arianna had a coupon for an additional 10% off the sale price.

What price did Arianna pay for the ski jacket?
A.
$182.25
B.
$202.50
C.
$192.50
D.
$175.50

Answers

The answer is A) $182.25

My work: 275/100 = 2.75 * .75 *.90 = 1.8225 and then multiply it by 100

It’s D. $170.50 Ez. 25%+10%=35%
So $270 35% of $270 = #170.50

Brainliest ONLY if correct

Polygon PSRT is drawn with vertices at P(1, 5), S(1, 0), R(−2, −3), T(−4, 2). Determine the image vertices of R′ if the preimage is rotated 270° counterclockwise.

R′(−3, 2)
R′(2, 3)
R′(3, −2)
R′(−2, −3)

Answers

Answer: R'(2, 3)

Step-by-step explanation: I think

The answer is R’(2,3)

help for 10 points :DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

Answers

Answer: 339 1/2

Step-by-step explanation: To solve, you have to do 48 1/2 x 7, and you will get 339 1/2

Answer:

339 1/2 ounces

Step-by-step explanation:

48.5 x 7= 339.5=339 1/2

Please answer the question

Answers

Answer:

Step-by-step explanation:

i dont have an answer sorry but i just wanted to say im struggling w u (i'm doing delta mathhhh)

Basically just increasing the shape by 2 so if you have (2,2) multiply by 2 and its going to br (4,4)

Please help as quick as you can!

Answers

Tiffany is correct because she is

help me and thank you :DDDDDD

Answers

Answer:

6.701

Step-by-step explanation:

Answer: 6,000 and 7,000

Step-by-step explanation:

600 and 700 turns into thousands so its 6,000 and 7,000

What is the area of the parallelogram?

18 square units

28 square units

21 square units

16 square units

Answers

Answer:

I'm sorry, but there is no information provided about the parallelogram, so I cannot determine its area. Please provide me with more information or context so that I can answer your question better.

We can’t see what the parallelogram looks like therefore we can’t solve it

what does 2.1 represent if you had to turn it into a fraction?

Answers

2.1 as a fraction is 21/10

please help I cant get the answer

Answers

Answer:

125 degrees

Step-by-step explanation:

the total is 180 degrees and it gives us 55. 180-55 is 125

Answer:125

Step-by-step explanation: 180 is the angle of a straight line. 180-55=125

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