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2 years ago

Jeff drinks of a glass of juice.

Mathematics

1 answer:

bazaltina [42]2 years ago

6 0

4/6 is an equivalent to 2/3

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Although five of John's answers were incorrect, 90% of his answers were correct. How many questions did John answer in all?

fiasKO [112]

Answer:

John answered 50 questions.

Step-by-step explanation:

Although five of John's answers were incorrect, 90% of his answers were correct.

This means that 5 is 100 - 90% = 10% of the total number of questions, n. So

$0.1n = 5$

$n = \frac{5}{0.1}$

$n = 50$

John answered 50 questions.

7 0

2 years ago

In a right triangle the length of a hypotenuse is c and the length of one leg is a, and the length of the other leg is b, what i

swat32

Apply the Pythagoras Theorem

${c }^{2} = {a}^{2} + {b}^{2}$
${9 }^{2} = {7}^{2} + {b}^{2}$
$81 = 49+ {b}^{2}$
$81 - 49 = {b}^{2}$
$32= {b}^{2}$
Take square root of both sides

$b = \sqrt{32}$
$b = 4 \sqrt{2}$

5 0

2 years ago

Read 2 more answers

If the scale factor is

klemol [59]

If the scale factor is 1/5, then the area of the preimage is multiplied by 0.2 or 1/5 to calculate the area of the new image.

6 0

1 year ago

If y varies directly with x and y=4 and y=12. Find the direct variation equation (find k and put into an equation).

Ipatiy [6.2K]

Answer:

When in public, wear a mask

Just a teeny, weeny task

It helps keep is safe and sound

Health and care, all around

On your mouth, and on your nose

Good to cover both of those

Step-by-step explanation:

It's called the mask song you can ask Google assistant to sing it for you:)

5 0

2 years ago

A length is measured at 21 cm correct to two significant figures, what is the lower bound of the length and upper bound?

Andreyy89

Answer:

20.5 and 21.5

Step-by-step explanation:

It says 2 significant figures so the least it can possibly be is 0.5 less and the most it can be is 0.5 more as if it was, lets say 20.4 it would round down to 20 not 21.

7 0

2 years ago