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BigorU [14]
3 years ago
5

Help? Will give brainliest!

Mathematics
1 answer:
Alex Ar [27]3 years ago
5 0

Answer:

Top one

Step-by-step explanation:

It is more appropriate to measure the speck of dust using millimeters because that is most similar to the scale of the speck's size.

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An orthocenter of a triangle is
Kamila [148]

Answer:

the intersection of the triangle's three altitudes.

Step-by-step explanation:

hope this helped </3

5 0
3 years ago
I need help with this question PLEASE<br> 2n+3n+9=-41
Tanzania [10]

Answer:

2n+3n=5n = -41-9= 50

5n=50

n = 10

8 0
4 years ago
Scott burned 20 calories per minute jogging for x minutes and 5 calories per minute for biking for y minutes. He spent a total o
stiv31 [10]

Answer:

x = 112

Step-by-step explanation:

We can create two equations 1. one that calculates calories burned and 2.another that calculates minutes:

20*x + 5*y = 1200

x + y = 120

Then we can solve for x

x = 120 - y

then we can plug that into the top equation:

20(120 - y) + 5y = 1200

divide by 5:

4(120 - y) + y = 240

distribute:

480 - 4y + y = 240

and then do all that combining like factors what not and simplify and solve:

480 - 3y = 240

-3y = -240

y = 8

NOW WE CAN JUST PLUG IN THE ANSWER FOR Y TO FIND X

8+x =120

x = 112

7 0
3 years ago
As the number of pages in a photo book increases, the price of the book also increases. There is an additional shipping charge o
BartSMP [9]

Let the maximum number of pages Jennifer can have be = x

Amount Jennifer has (P) = $62.10

Given equation is :

P = (20+0.5x)+0.15(20+0.5x)

Price is given = 62.10 , so equation is :

62.10=(20+0.5x)+0.15(20+0.5x)

62.10=20+0.5x+3+0.075x

62.10=23+0.575x

0.575x=39.10

x=68

Hence, Jennifer can have a maximum of 68 pages in her book.

5 0
3 years ago
Jumlah panjang rusuk sebuah kubus adalah 84cm. luas permukaannya adalah.....
antoniya [11.8K]

Answer:

Total surface area of cube = 294 cm²

Step-by-step explanation:

Given:

Perimeter of cube = 84 cm

Find:

Total surface area of cube

Computation:

Perimeter of cube = 12 x side

84 = 12 x side

Side = 7 cm

Total surface area of cube = 6(a)²

Total surface area of cube = 6(7)²

Total surface area of cube = 294 cm²

7 0
3 years ago
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