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maksim [4K]
4 years ago
7

Use benchmarks to estimate each sum 4/5 + 8/9

Mathematics
1 answer:
solong [7]4 years ago
8 0

Answer:

76/45?

Step-by-step explanation:

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Twenty-eight slices of pizza cost $12. Approximately how much would 70 slices cost?
Mademuasel [1]

Answer:

$30.

Step-by-step explanation:

70/28 = 2.5

12 x 2.5 = 30

5 0
2 years ago
2. Find the length of segment JK with endpoints J(4,8) and K(-1,-2). Leave answer as a
yuradex [85]

Answer:

Distance of JK = 15 unit

Step-by-step explanation:

Given:

J(4,8)

K(-1,-2)

Find:

Distance of JK

Computation:

Distance = √(x₂-x₁)² + (y₂-y₁)²

Distance of JK = √(-1-4)² + (-2-8)²

Distance of JK = √25 + 100

Distance of JK = √125

Distance of JK = 15 unit

3 0
3 years ago
Quadratic inverse for y=x^2-1
stepan [7]

let's recall that to find the inverse of any expression, we start off by doing a quick switcheroo on the variables, and then solve for "y".

\bf y = x^2-1\implies \stackrel{switcheroo}{x=y^2-1}\implies x+1=y^2\implies \sqrt{x+1}=\stackrel{f^{-1}(x)}{y}

8 0
3 years ago
A waiter earned a 7% tip. What decimal is equivalent to 7%?
Artist 52 [7]
7% in decimal form is 0.07
8 0
3 years ago
What expression is equivalent to 5 (x+6)-2x+9.
myrzilka [38]
5x+30- 2x+9

3x+39 is the expression.
7 0
3 years ago
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