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White raven [17]

2 years ago

11

josh mowed one-third of a 2000-ft squared in 18 minutes. at the same rate how many minutes would it take him to ow a 4200-ft squ

are lawn

1 answer:

zzz [600]2 years ago

4 0

Twice as much time. So it would be 36 minutes.

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Find the value of x for which ABCD must be a parallelogram

Tamiku [17]

They are equal so...

15x+2 = 9x+20

15x-9x = 20-2

6x =18

x = 18/6 = 3

x = 3

6 0

2 years ago

-4 + 3y = -43<br> what does y equal?

NeTakaya

Answer:

-13

Step-by-step explanation:

We remove the -4 by adding 4 to each side:

3y = -43 + 4

Now we simplify to give:

3y = -39

So now we divide both sides by 3 to give our answer of:

y = -39/3
y = -13
We can substitute this into the original equation to check our answer:

-4 + 3(-13) = -43

-4 + -39 = -43

✅

7 0

2 years ago

Read 2 more answers

In the expression 2003-02-02-00-00_files/i0020000, the number 4 is called the __________.

elixir [45]

Base is the correct answer

5 0

2 years ago

What is 8^2 + 15^2= c^2

Tasya [4]

Answer:

$8^2\:+\:15^2=\:c^2$

c = 17

Step-by-step explanation:

This is the Pythagorean theorem

6 0

2 years ago

Read 2 more answers

An article gave the following summary information for fracture strengths (MPa) of n = 196 ceramic bars fired in a particular kil

Oliga [24]

Answer:

54.80 MPa to 55.92 MPa

Step-by-step explanation:

Sample mean fracture strength (x) = 55.36 MPa

Sample standard deviation (s) = 3.99 MPa

Sample size (n) = 196.

The upper and lower bounds for a 95% confidence interval are given by:

$U=x+1.960*\frac{s}{\sqrt{n}} \\L=x-1.960*\frac{s}{\sqrt{n}}$

The upper and lower bounds of the confidence interval are;

$U=55.36+1.960*\frac{3.99}{\sqrt{196}}\\U= 55.92\\L=55.36-1.960*\frac{3.99}{\sqrt{196}}\\L= 54.80\\$

The 95% confidence interval for true average fracture strength is 54.80 MPa to 55.92 MPa

4 0

3 years ago