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Zinaida [17]
3 years ago
14

Can someone pls help on the last 4 on the bottom

Mathematics
1 answer:
Andrews [41]3 years ago
8 0
Ok I'm only in fifth grade what are we doing here
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Chloe is installing new windows in her house and needs to determine the amount of sealant she will need around the outside edge
irina [24]

Answer:

240

Step-by-step explanation:

because each side is 60 inches so do 60x4 and you get 240

4 0
3 years ago
35. the set, s consists of 900,000,000 whole numbers, each being the same number of digits long. howmany digits long is a number
weeeeeb [17]

Answer:

  • 9 digit long

Let the number of digits be n and the number of elements in set be s.

<h3>When n = 1</h3>
  • The set contains 1-digit numbers, 1 through 9,
  • The set consists of 10 - 1 = 9 numbers.

<h3>When n = 2</h3>
  • The set contains 2-digit numbers, 10 through 99,
  • The set contains 100 - 10 = 90 numbers.

<h3>When n = 3</h3>
  • The set contains 3-digit numbers, 100 through 999,
  • The set contains 1000 - 100 = 900 numbers.

The pattern we see helps us determine the relationship between s and n as follows.

When set contains n-digit numbers, the set contains:

  • s = 10ⁿ - 10ⁿ⁻¹ = 10ⁿ⁻¹(10 - 1) = 9*10ⁿ⁻¹ elements

We have s known, substitute it into equation above and solve for n:

  • 900000000 = 9*10ⁿ¹
  • 100000000 = 10ⁿ⁻¹
  • 10⁸ = 10ⁿ⁻¹
  • n - 1 = 8
  • n = 9

The numbers in the set s are 9-digit long.

4 0
2 years ago
What is the slope of the line that passes through the points (-1,1) and (1,-15)​
Luda [366]

Answer:

  • \boxed{\text{The slope is -8.}}

Step-by-step explanation:

To find the slope of the line, you have to use a slope formula.

<u>Slope formula:</u>

\Longrightarrow:\sf{\dfrac{y_2-y_1}{x_2-x_1} }

⇒ y2=(-15)

⇒ y1=1

⇒ x2=1

⇒ x1=(-1)

<u>Rewrite the whole problem down.</u>

\Longrightarrow: \sf{\dfrac{-15-1}{1-\left(-1\right)}=\dfrac{-16}{2}=\boxed{\sf{-8}}

  • <u>So, the slope is -8, which is our answer.</u>

I hope this helps you! Let me know if my answer is wrong or not.

5 0
2 years ago
Solve for x. 7(x+2)=6(x+5) ​
Eva8 [605]

Answer:

16

Step-by-step explanation:

7x+14=6x+30

Move x into one side and whole numbers to the other.

Solve like linear equation.

7x+14=6x+30

7x-6x=30-14

x=16

8 0
3 years ago
Read 2 more answers
Please help me answer this...
alina1380 [7]

Answer: 1.9375

Step-by-step explanation: i tried man gimme brainliest if i got it wrong or right

8 0
3 years ago
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