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Alex777 [14]
2 years ago
12

I will mark brainliest

Mathematics
1 answer:
Artist 52 [7]2 years ago
6 0

Answer:

2 1/2   (2.5)

Step-by-step explanation:

Multiply all the numbers then divide by 1/2

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A building 84 ft high casts a 231-ft shadow. Sarah casts an 11-ft shadow. The triangle formed by the building and its shadow is
julia-pushkina [17]

Answer:

Sarah is 4 ft tall.

Step-by-step explanation:

231÷84= 2.75

11 ft ÷ 2.75 = <u>4 ft</u>

3 0
3 years ago
A student performed the following system to find the solution to the equation x2-2x-8=0
Molodets [167]

The student messed up on step one. The proper factoring is (x-4) (x+2)

5 0
3 years ago
Read 2 more answers
Please help me<br> solve (x+3) (x+7)
vodka [1.7K]

Step-by-step explanation:

Here, we'll need to multiply these two values together.  I'll use the expansion formula, which goes as follows:

(a+b)(c+d)

  • Expand

ac + ad + bc + bd

Lets apply this to the following equation:

(x+3) (x+7)

  • Expand.

(x*x) + (x * 7) + (3 * x) + (3 * 7)

  • Simplify.

(x^2) + (7x) + (3x) + (21)

  • Remove parenthesis and add.

x^2+10x+21

Answer:

x^2+10x+21

5 0
3 years ago
Noah loves the Half-Tens facts and often uses them to solve multiplication problems. Make up a 2-digit by 3-digit multiplication
Stells [14]

Half Tens is a way of multiplying where we have to find the value of given numbers. First we double any 'one' of the two given numbers and multiply both to get an answer. Then we divide that answer by '2' to get the answer.

Lets take two numbers as 16 and 340

16\times340=?

Double the number 16

32\times340=10880

Now we will divide this by 2

\frac{10880}{2}= 5440

So, if we check 16\times340=? , it is 5440.

Similarly if we double the number 340, we get 680

Now, 16\times680=10880

And 10880/2 = 5440

Hence, in both ways the answer is 5440.

6 0
3 years ago
How many gal is in 32 qt?
spin [16.1K]
There are 8 gallons in 32 quarts becuase 4 quarts = 1 gallon so 32 divided by 4 is 8. Hope this helped! :)
6 0
3 years ago
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