Mathematics Middle School

30 pts and brainliest! A toy pyramid has the dimensions shown below. The base of the pyramid is an equilateral triangle. What is the area of the base of this pyramid?



42 cm 2
27 cm 2
21 cm 2
31.5 cm 2

30 Pts And Brainliest! A Toy Pyramid Has The Dimensions Shown Below. The Base Of The Pyramid Is An Equilateral

Answers

Answer 1

Answer:

21cm^2

Step-by-step explanation:

base of pyramid= 6×7=42

42÷2=21

=21cm^2

Related Questions

2 birds had 14 babies. The mom kept having babies for the next 43 years. How many babies did she have

Answers

Answer:

14x43=602 babies

Step-by-step explanation:

Is this the whole context of the problem? Going off of the idea that 14 babies are born every year each year the amount of birds would increase by 14. For example after two years (14x2) there would be 28 birds then after three years (14x3) there would be 42 so on so forth.

602 because 14 times 43 equals 602 since she keeps have babies for the next 43 years

Please help I don't know the answer!

Answers

Answer:

128 in

Step-by-step explanation:

A=hb b/2

substitute the variables

A=8(32)/2

A=128

Air is composed of nitrogen, oxygen, and other gases. Based on that information, air can be described as

Responses

a compound.

a compound.

an element.

an element.

a mixture.

a mixture.

a molecule.

Answers

Step-by-step explanation:

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen

This is not math… also its a mixture

brainlist for person who gets right (put numbers in order please)

Answers

Answer:

-4x - 78 > 300

-4x > 378

x < -94.5

The correct solutions: 1 (-97),

6 (-100), and 8 (-99).

PLEASE HELP! hw is due soon


A boat travels at constant speed. After 20 minutes the boat had traveled 2.5 miles. How long does it take the boat to reach the bridge which is 15 miles away?

Answers

Answer:120 minutes

Step by step:

you have to divide 20 by 2.5 to find how many minutes it takes to drive 1 mile. lastly, multiply that by 15 miles

20 divided by 2.5

1 hour - 60 mins
20mins - 2.5 miles
2.5 • 3= 7.5 miles in 1hr
7.5+7.5=15 miles in 2hrs
answer: it takes 120 minutes or 2 hours to reach the bridge

What is the answer for this question

Answers

Answer:

B. 335.5 in.²

Step-by-step explanation:

The pencil decoration can be broken down into a rectangle and a triangle.

The area of the pencil decoration is the sum of the areas of the rectangle and triangle.

The rectangle has length b and width a.

The triangle has base a and height a.

total area = area of rectangle + area of triangle

total area = length × width + base × height / 2

total area = b × a + a × a / 2

From the given information, we see that a = 11 in., and b = 25 in.

total area = b × a + a × a / 2

total area = (25 in.) × (11 in.) + (11 in.) × (11 in.) / 2

total area = 275 in.² + 60.5 in.²

total area = 335.5 in.²

The answer is B 335.5 in

Hello, can someone please help me with this question?
The isosceles triangle has two sides with the same length. The base is one half the length of a side. The expression which represents the perimeter is s+s+1/2s. What is the value of this expression if s=8?

Answers

Answer: 20 units

Explanation: s = 8

Perimeter = s + s + 1/2 x s

= 8+8 + 1/2 x 8

= 8 + 8 + 4

= 20 units

Answer:20

Step-by-step explanation:

8+8+0.5x8 0.5x8 is 4 4 plus 8 plus 4 is 20 so 20

How do I graph y = -1 = 2x and y = -4 + 2x?

Answers

Answer:

Slope = Rise/Run

To graph, you first need the y-intercept.

In y = -1 + 2x, the y-intercept is -1. Start in -1 and then go two units up, and 1 unit to the right which will represent the slops, 2.

In y = -4 + 2x, the y-intercept is -4, so you'll start at -4, then go 2 u its up, and 1 to the right which will represent the slope, 2.

To find y-intercept:

y = mx + b            |      main things:      m = slope       b = y-intercept

Hope it helps!

Basically this is how it should look like when you follow the steps from the person who explained :]

If angle 4 is 100o, what is the measurement for angle 1?

Group of answer choices

60o

75o

80o

100o

Answers

The measurement for angle 1 is 100 too, they’re congruent
100°
They are congruent so it would have to be the same!

In two days, megan has read 62 pages of James and the Giant Peach. the book has 194 pages. if p represents the number of pahes Megan has left to read, which equation represents the situation?

A: 2p + 62 = 194
B: 194 - p = 62
C: 2p = 132
D: 132 - p = 194

Answers

Option B. 194-p=62 because the total she has read minus the amount she needs equals 62
b just read it and - the p

what is 1362 x 657 pixels in ratios.

Answers

to find the aspect ratio of an image with dimensions 1362 x 657 pixels, we need to divide the width by the height.

1362 ÷ 657 ≈ 2.073

Therefore, the aspect ratio of the image is approximately 2.073:1.

Help? Im confused on this and i need a grade!

Answers

Answer:

A

Step-by-step explanation:

You have to factor the -1/5(y-3) first to get -1/5y+3/5.

Then, you will add 5 to 3/5 to get 5 3/5.

Finally, you will combined the whole equation.

Hope this helps! :)

what is y=x+1 as a pair Pls I need help I'm dying

Answers

Answer:  y inverters in 4 so is 4

Step-by-step explanation: that means what or which numbers make that y and how is showing you what it is value its equal

ToPg pls help me with some aleks

Answers

Answer: well what is 4 times 12?

Step-by-step explanation: you are suppost to put the side of the triangle that has the line on, to the other side to make it a square

100 POINTS!!! BRAINLYIST 5 question

Javier has a model of a cone with a radius of 3 inches and a height of 10 inches. Javier increased his model’s volume by doubling its radius and height. What is the volume of the larger cone in cubic inches?

Q2
A large sphere at an amusement park is 165 feet in diameter. Which of the following is closest to the volume, in cubic feet, of the sphere?

261,000

2,351,000

18,810,000

41,210,000

Q3 (image attached)
A rancher wants to cut a metal cylinder in half to use as a watering trough as shown below.



If the cylinder has a diameter of 5 feet and a length of 9 feet, which value is closest to the volume of the trough in cubic feet?

176.6

141.3

88.3

70.7

Answers

Answer: 240 pi in. ^2

Step-by-step explanation:

Please help me...How can you make a high estimate for the sum of two fractions in a word problem? This is due tomorrow! :)

Answers

Answer: What is your fraction?????? turn them into decimals and then round them up. Remember 4 or less let it rest to 0. 5 or more let it score too 10.

Step-by-step explanation:

pls help i will give brainlist

Answers

Answer:

25

Step-by-step explanation:

48 × 1/6 = 8

15 + 8 = 23

48 - 23 = 25

Which expression is equivalet to (3x-1)-2.75(x+2)

A. 0.25x - 6.50

B. 0.25 + 1.00

C.0.25 + 4.50

D.0.25 -3.00


I would love an explanation to help me understand how to solve the other problems like this one

Answers

I think is B but I’m not sure

it is A. 0.25x - 6.50

You use distributed property first so the equation will be 3x - 1 - 2.75x - 5.50

Then you combine like terms so 3x - 2.75 will equal 0.25x

The subtraction symbol will stick with 1 making it -1 so the second part will be -1 - 5.50 will equal 6.50

And finally, the expression will be 0.25x - 6.50

Mary has 400 slices of pizza. She gives 30 to Cambri,96 to Maria,99 to Falli,43 to Sam and 32 to Callin. How many slices does she have left?

Answers

Answer:

The answer to your problem is, 100 slices.

Step-by-step explanation:

First lets add up all the numbers that she gives away

30+96+99+43+32 =

300.

If she gave out 300 slices of pizza then here left over is:

400 - 300 = 100.

Thus the answer to our problem is, 100 slices.

Mary has 100 slices left over because if you add all the slices she gave away then subtract from the starting amount would come out to 100


30+96+99+43+32=300

400-300=100

A city just opened a new playground for children in the community. An image of the land that the playground is on is shown.
What is the area of the playground?

900 square yards
855 square yards
1,710 square yards
1,305 square yards

Answers

D 1305 square yards I think

Answer:

D-1,305 square yards

Step-by-step explanation:

Mr. Fowler’s science class grew two different varieties of plants as part of an experiment. When the plant samples were fully grown, the students compared their heights. Plant variety Height of plant (inches) Mean Mean absolute deviation (inches) Variety A 20, 17, 19, 18, 21 19 1.2 Variety B 13, 18, 11, 9, 14 13 2.4 Based on these data, which statement is true?
A.Plants from variety A always grow taller than plants from variety B.
B.The height of a plant from variety A is likely to be closer to the mean.
C.The height of a plant from variety B is likely to be closer to the mean.
D.The maximum height for plants from variety B is greater than for variety A.

Answers

Answer:

jhhhhhh b jjb b jbj

Step-by-step explanation:nbbn bn bn bn nb bn bn bn b bnbnbnbnbbnnb bnnbnbnbnbnbnbhbhjbhjbjhbjhhjbhjbhjbhkbkhbkhkhbhbhj

Thats much text some guys

Lily had 6 lollipops. She got 5 times more the next day. How many lollipops does she have now?

Answers

Answer: 30

Step-by-step explanation: the question is basically saying what is 6x5 which would equal 30

If the cinema is located at (5, 1) on a map and the theater is at (-2, 7), how far apart are these two locations?
Justify your answer.

Answers

Well the slope is 6/7 which means that it goes 6 up the y axis and 7 over the x axis

A teacher asks four students to graph the opposite of 2.5
on a number line. The table shows the students’ answers.

Student Answer
1

2

3

4

Which statement is true?

Responses

Student 1
’s number line is correct because it shows the opposite of 2.5
is −2.5
.

Student 1 ’s number line is correct because it shows the opposite of 2.5 is − − 2.5 .

Student 2
’s number line is correct because it shows the opposite of 2.5
is −2.5
.

Student 2 ’s number line is correct because it shows the opposite of 2.5 is − − 2.5 .

Student 3
’s number line is correct because it shows the opposite of 2.5
is −2.5
.

Student 3 ’s number line is correct because it shows the opposite of 2.5 is − − 2.5 .

Student 4
’s number line is correct because it shows the opposite of 2.5
is −2.5
.

Answers

Answer:

Step-by-step explanation:

the statement that is true is 3.

Select ALL the expressions that are equivalent to -4(8x-3)
A) -20X
B) 4(3-8x)
C) -32x-12
D) 2(-16x+6)
E) 5-9(8x-3)

Answers

Answer:

B, D, and E

Step-by-step explanation:

-4(8x-3)= -32x+12

So we must choose the choices equivalent to this expression

A) -20x≠-32x+12

B)4(3-8x)≟-32x+12

  12-32x=-32x+12

C)-32x-12≠-32x+12

D)2(-16x+6)≟-32x+12

  -32x+12=-32x+12

E) 5-9(8x-3)≟-32x+12

  40x-15-72x+27≟-32x+12

  -32x+12=-32x+12

Please I need asap plsss

Answers

Multiply both sides by 3

C+15=27

Move constant to the right

C=27-15

Solution

C=12
The answer is c = 12

A dishwasher pumps 3 gallons of water out in 30 seconds. What is the flow rate?
gallons/ sec

Answers

Answer:

.1 gallons/ per 1 second

3 divided by 30

(give the person bellow brainliest for pointing out my mistake lol)

.1 gallons per 1 second

3 ÷ 30

every one second, the dishwasher pumps out .1 gallon of water, and after 30 seconds, the dishwasher will pump out 3 gallons of water.

Emily thinks the perfect tomato sauce has
15
1515 cloves of garlic in every
6
L
6 L6, start text, space, L, end text of sauce. Raphael's tomato sauce has
25
2525 cloves of garlic in every
9
L
9 L9, start text, space, L, end text of sauce.
What will Emily think of the amount of garlic in Raphael's tomato sauce?
Choose 1 answer:
Choose 1 answer:
(Choice A) Raphael's tomato sauce has too much garlic.
A
Raphael's tomato sauce has too much garlic.
(Choice B) Raphael's tomato sauce has too little garlic.
B
Raphael's tomato sauce has too little garlic.
(Choice C) Raphael's tomato sauce is perfect.
C
Raphael's tomato sauce is perfect.

Answers

Answer:

answer choice C

Step-by-step explanation:

REPOSTING FOR THE 3RD TIME. THE ANSWER IS NOT 5 OR OR 15!!!!!! PLEASE HELP ME!!! tHANK yOU

Answers

Answer:

The answer is 10%

Step-by-step explanation:

Add 5% and 5% to get 10%

What is it you need help on ?

The box-and-whisker plot below represents some data set. What percentage of the data values are less than 51?

Answers

Answer:

25

Step-by-step explanation 25%:

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