Mathematics Middle School

first right answer gets 10 points

First Right Answer Gets 10 Points

Answers

Answer 1

Answer:

Base: 16 cm

Height: 48 cm

Step-by-step explanation:

Let's call the length of the base b, and the length of the height h. Since the formula for the area of a triangle is bh/2, you can set up the following equations:

\(h=3b\\\dfrac{bh}{2}=384\\ \dfrac{b(3b)}{2}=384\\\dfrac{3b^2}{2}=384\\3b^2=768\\b^2=256\\b=16\\h=16\cdot 3=48\)

Hope this helps!

Related Questions

Please help i'm so stuck!

This figure represents an arrow painted on a walkway 12 times.
What is the area of the walkway that is painted with the 12 arrows?


70 cm²

90 cm²

840 cm²

1080 cm²

Please help i'm so stuck! This figure represents an arrow painted on a walkway 12 times.What is the area

Answers

The entire shape is 50cm squared. Multiply that by twelve, you get 600. Hope that’s right, and it helps!
It is 90cm squared also sorry if it’s wrong!

Jacob has a coin and a spinner with 3 equal sections, one colored red, one colored blue, and one colored green. Which tree diagram best represents all possible outcomes if Jacob spins the spinner once and flips the coin once?

Answers

Answer:

the red tree

Step-by-step explanation:

Answer:

red tree

Step-by-step explanation:

There are currently 6,210 fish in a lake. If the number of fish in the lake increased by 15 percent during the last year and 20 percent during the year before that, how many more fish are in the lake currently than in the last two years ago?

Answers

I’m pretty sure the answer should be 1,710 if not i’m sorry

Answer:

1710 fish

Step-by-step explanation:

Let the number of fish in the lake last year be 'x'

The equation becomes-
x + 15x/100=6210     (This is because 15% of x is added in x to become    
6210... hope you understand)

x + 15x/100 = 6210
115x/100 = 6210
23x/20 = 6210
x = 6210 * 20/23
x = 270 * 20
x = 5400

Therefore- The number of fish last year = 5400


Now, let the number of fish in the lake 2 years ago be 'y'

The equation becomes-
y + 20y/100 = 5400     (Same logic as last time)

y + 20y/100 = 5400
120y/100 = 5400
24y/20 = 5400
6y/5 = 5400
y = 5400 * 5/6
y = 900 * 5
y = 4500

Therefore- Fish in the lake two years ago = 4500 fish

Difference between current and two years ago = 6210-4500
                                                                               = 1710 fish

Hope you understood the answer and I hope it helps you :)


The price of broccoli is $1.25 per pound. Let Y be the total cost in dollars of buying x pounds of broccoli

Which equation represents this situation?
1. y=x + 1.25

2. x= 1.25y

3.x=y+1.25

4.y=1.25x

Answers

Answer:

4. y=1.25x

Step-by-step explanation:

y is the total cost

x are the pounds which will be multiplied to the price of the broccoli

4. Y= 1.25x
Total cost= 1.25 x pounds of broccoli

Here’s another! Offering a brainliest! JUST FOR FUN +10points

Heres another! Offering a brainliest! JUST FOR FUN +10points

Answers

Answer:

Brainilist Lost all of mine     you have26?

Step-by-step explanation:

hMMmmmmmm my guess 27

please answer quickk! Full understandable answer

please answer quickk! Full understandable answer

Answers

Answer:

Step-by-step explanation: 17 spins and 3 are blue so 3/17 is the probability written as a fraction in it's simplest form

3/17 because there is 17 options in all and 3 are blue!

Translate the sentence into an equation. Two less than the product of 5 and a number equals 9. Use the variable c for the unknown number.

Answers

Answer:

The equation is: \(5c-2=9\)

Step-by-step explanation:

Since 2 less than the product of 5 and a number c is equal to 9, it follows:

\(5c-2=9\)

5•C-2=9 would be the equation

9 | 20 + d and 20 ≤ 20 + d ≤ 29
1. What does the line mean?
2. What is the meaning of "|" in this equation and also in algeria? Please explain.

Answers

the line means like equal to so it’s like 20 is greater than or equal to 20
The line means absolute value of one number.

Please Help I am being timed!!

Please Help I am being timed!!

Answers

C i think would be the answer

2, 3, 5, 9, 17, 22, 31, 39

Regina kept track of the points she scored during her team’s first eight basketball games. What is Regina’s mean score?
Responses
A 3939
B 1616
C 3737
D 1313
E 17

Answers

Answer:

Mean = 16

Step-by-step explanation:

MEAN can be find bg the sum of all score divided by the amount of the score.

Mean = total amount / number of amount

Total amount = 2 + 3 + 5 + 9 + 17+ 22 + 31 + 39

= 128

number of amount = 2, 3, 5, 9, 17, 22, 31, 39

= 8

Then we can calculate mean as

Mean = 128/8

Mean = 16

16
2+3+5+9+17+22+31+39=128
128/8=16

1/4 divided by 1 1/8
pls help ill give big brain

Answers

We can turn 1 1/8 into improper fraction, which is 9/8.

1/4 divided by 9/8

keep change flip

keep the 1/4, change divide into multiplication, flip 9/8

1/4 * 8/9
8/36
2/9

Answer:

2/9

Step-by-step explanation:

1/4 divided by 1 1/8.

First rewrite 1 1/8 as an improper fraction.

You now have 1/4 divided by 9/8.

When dividing by a fraction you multiply by the reciprocal.

You now have 1/4 * 8/9.

Now Multiply the numerators across and the denominators across to get 8/36.

Simplify the fraction. 2/9

PLZ somebody help me I need help with these two problems

PLZ somebody help me I need help with these two problems
PLZ somebody help me I need help with these two problems

Answers

Answer:

the first questions answer is 3

the second questions answere is -2

Step-by-step explanation:

The absolute value is the positive value of the number given. The second question is simply adding the positive 7 to the negotiation 9 to have negative 2 left over.

The first one is 3 and the second one is -2

An experiment involves rolling two dice simultaneously. The following table shows the possible outcomes using the format of (die 1,die 2).
What is the probability of rolling 2 even numbers?

An experiment involves rolling two dice simultaneously. The following table shows the possible outcomes

Answers

To determine the probability of rolling two even numbers, we need to find the favorable outcomes (outcomes with two even numbers) and divide it by the total number of possible outcomes.

The possible outcomes when rolling two dice are:

(1,1), (1,2), (1,3), (1,4), (1,5), (1,6)

(2,1), (2,2), (2,3), (2,4), (2,5), (2,6)

(3,1), (3,2), (3,3), (3,4), (3,5), (3,6)

(4,1), (4,2), (4,3), (4,4), (4,5), (4,6)

(5,1), (5,2), (5,3), (5,4), (5,5), (5,6)

(6,1), (6,2), (6,3), (6,4), (6,5), (6,6)

Out of these, the favorable outcomes (outcomes with two even numbers) are:

(2,2), (2,4), (2,6), (4,2), (4,4), (4,6), (6,2), (6,4), (6,6)

Thus, there are 9 favorable outcomes.

The total number of possible outcomes is 36 (since each die has 6 possible outcomes).

Therefore, the probability of rolling 2 even numbers is:

\(\text{Probability} = \frac{\text{Number of Favorable Outcomes}}{\text{Total Number of Possible Outcomes}} = \frac{9}{36} = \frac{1}{4} = 0.25\)

Hence, the probability of rolling 2 even numbers is 0.25 or 1/4.

25% or 1/4 for rolling 2 even numbers

The table below represents a linear function f(x) and the equation represents a function g(x):

x f(x)
−1 −5. g(x)
0 −1. g(x) = 4x + 3
1 3

Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points)
Part B: Which function has a greater y-intercept? Justify your answer. (4 points)

Answers

Answer:

i have now idea but want is you teacher making you do

Step-by-step explanation:

Which scenario can be modeled by the linear function
y = -15x + 500?

A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.

B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.

C. A carpet cleaning service charges $500 plus an additional $15 for every hour.

D. A membership fee for a movie streaming service is free, but each rental costs $15.

Answers

I think the answer is C
The answer is a because it is able to be modeled unlike the rest

What does 28+87÷3⋅2^3 equal

Answers

Answer:

260

Step-by-step explanation:

28+29(23)

=28+(29)(8)

=28+232

The answer will be 260

There is only the answer for area. I need to find both area and perimeter.
thankss.‍

Answers

where is the question
Please show me the question

Use the Midpoint Rule with \(n=5\) to estimate the volume obtained by rotating about the y-axis the region under the curve \(y=\sqrt{1+x^3}\), \(0\leq x\leq 1\).

Answers

To estimate the volume using the Midpoint Rule with \(\displaystyle n=5\), we need to divide the interval \(\displaystyle 0\leq x\leq 1\) into \(\displaystyle n\) subintervals of equal width. Since \(\displaystyle n=5\), each subinterval will have a width of \(\displaystyle \Delta x=\frac{1-0}{5}=\frac{1}{5}\).

Now, let's calculate the volume using the Midpoint Rule. The formula for the volume obtained by rotating about the y-axis is:

\(\displaystyle V\approx 2\pi \sum _{i=1}^{n}y_{i}\Delta x\)

where \(\displaystyle y_{i}\) represents the value of the function \(\displaystyle y=\sqrt{1+x^{3}}\) evaluated at the midpoint of each subinterval.

First, let's find the midpoints of the subintervals. Since the width of each subinterval is \(\displaystyle \Delta x=\frac{1}{5}\), the midpoint of the \(\displaystyle i\)-th subinterval is given by:

\(\displaystyle x_{i}=\frac{\Delta x}{2}+\left( i-\frac{1}{2}\right) \Delta x=\frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\)

Substituting \(\displaystyle x_{i}\) into the function \(\displaystyle y=\sqrt{1+x^{3}}\), we obtain:

\(\displaystyle y_{i}=\sqrt{1+\left( \frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\right) ^{3}}\)

Now, we can calculate the approximate volume using the Midpoint Rule:

\(\displaystyle V\approx 2\pi \sum _{i=1}^{5}y_{i}\Delta x\)

Substituting the values of \(\displaystyle y_{i}\) and \(\displaystyle \Delta x\) into the formula, we can evaluate the sum and compute the estimated volume.

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

The answer your looking for is right above my

A quality control inspector rejects 253 can openers from a batch of 19,354. What is the experimental probability that a can opener will pass inspection?

Round your answer to the nearest hundredth.

Answers

Answer:

0.99

Step-by-step explanation:

To find the experimental probability, divide the number of can openers that passed inspection by the total number of can openers in the batch:

Passed inspection: \(19,354 -253=19.101\)
Experimental probability: \(19,101\)÷\(19,354=0.987\)
Which rounded to the nearest hundredth is 0.99

The answer is 0.99
19354-253=19101
19101/19354=0.987
Now round to nearest 0.99

Algebra: Find x
....

Algebra: Find x....

Answers

Answer:

d

Step-by-step explanation:

The triangles are similar, thus the ratios of corresponding sides are equal, that is

\(\frac{2x+1}{x+4}\) = \(\frac{40}{25}\) = \(\frac{8}{5}\) ( cross-  multiply )

5(2x + 1) = 8(x + 4) ← distribute parenthesis on both sides )

10x + 5 = 8x + 32 ( subtract 8x from both sides )

2x + 5 = 32 ( subtract 5 from both sides )

2x = 27 ( divide both sides by 2 )

x = 13.5 → d

Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.



What is the mean number of minutes spent on the phone?

Some students recorded how many minutes they spent on the phone in one day. They put the results in a

Answers

Answer:   31

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

Figure A is a scale image of Figure B.
whas the value of x?

Figure A is a scale image of Figure B.whas the value of x?

Answers

x = 30 because the ratio of 27/45 = .6 so 18/.6 is 30
x = 30, do 45 / 27. which equals 1.66 then times that by 18 to get 30

A stainless steel patio heater is a square pyramid. The length of one side of the base is 25.4 in. The slant height of the pyramid is 88.1 in. What is the height of the​ pyramid?

Answers

Answer:

Approximately 84.35

Step-by-step explanation:

Since we know that base^2+height^2=hypetenuse*2, then hypetenues^2-base^2=height^2

Answer:

The answer is 84.35

50 cents is _____% of the value of a dollar? Idk pls help me

Answers

Answer:

50

Step-by-step explanation:

Answer:

50 Cents is 50% of a dollar

Step-by-step explanation:

There is 100 cents in a dollar, so every 1 cent is 1%, so 50 cents = 50%.

Question is in picture, thank you

Answers

Answer:the answer is c

Step-by-step explanation:

Answer is c I’m sure hope that helps!!!

2 and 1/3 converted to a decimal by long division​

2 and 1/3 converted to a decimal by long division

Answers

Answer:

3.33

Step-by-step explanation:

the long division is supposed to be 7 on the outside and a 3 on the inside to start. youre supposed to use the mixed number (7/3)

3.33 is the correct answer to the problem

Factor out the coefficient of the variable term.

Factor out the coefficient of the variable term.

Answers

Answer:

4(x-5)

Step-by-step explanation:

you find the greatest common factor and in this case it is 4 so you divide everything by 4 and that's how i got the answer

Answer:

4

Step-by-step explanation:

in 4x-20, you take 4x and remove the variable or letter and then you get your answer which is 4

Using a proportion, how can we find 12% of 125? Please show your proportion set up and all work. HELP ME ASAPPPPPPPPP THE CORRECT ANWSER GETS A BRAINLIST I HAVE 3MINS SOMEONE PLEASE!!!!!

Answers

Answer: 15

Step-by-step explanation:

Write 12% as a fraction: 12/100

Since, finding the fraction of a number is same as multiplying the fraction with the number, we have: 12/100 of 125.

12/100 × 125

If you are using a calculator, enter 12÷100×125 which will give you 15 as the answer.

answer: 15! hope this helps.

The cost of a trail mix at the grocery store is normally $12 per pound but now the price has increased by 30%. What is the price per pound of trail mix now that the price has increased?

Answers

Answer:

15.6

Step-by-step explanation:

The price of trail mix has increased by $12 * 30/100 = $<<12*30/100=3.6>>3.6.

So the price per pound of trail mix now is $12 + $3.6 = $<<12+3.6=15.6>>15.6.

The required new price of the trail mix is $15.6 .

What is percentage?

Percentage is a measurement to find value of given number out of hundred.

Given that,

The normal cost of trail mix at the grocery store = $12 per pound.

Als0, the price of the trail mix increased by 30%.

To find the price of trail mix after increasing the price,

Use percentage property,

Let the initial price was 100 %

So after increasing 30%, the new price becomes 130%.

The new price = 12 x 130% = 12 x 130 / 100 = 1560/100 = 15.6

The increased price of the trail mix is $15.6.

To learn more on Percentage:

https://brainly.com/question/24120406

#SPJ2

A project will take a total of 720 person-days to complete. If the project must be completed in 30 days, how many people must be employed? PLEASE HURRY

Answers

Answer:

192 hours per day / 8 hours per person per day = 24 people

Step-by-step explanation:

Assuming each person works for 8 hours a day, the total number of hours needed to complete the project is:

720 person-days x 8 hours = 5,760 hours

To complete the project in 30 days, the total number of hours needed per day is:

5,760 hours / 30 days = 192 hours per day

It’s 24!! EXPLAIN-720/30=24 because you have to divide the amount of people by days p/d= e
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