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2 years ago

Explain how you would find 45 x 7/9 mentally.

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

3 0

You would do 45 divided by 9 which is 5. Then you do 5x7= 35 and that's your answer

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Diego has some money in his bank account before he starts a summer job. He deposits

Leto [7]

Answer:

he earns $7 per hour

Step-by-step explanation:

6 0

2 years ago

Pls help with these questions, will give BRAINLIEST (if you know the answer)

Anika [276]

I don't know but these can be really difficult

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8 0

2 years ago

What is the value of x?

Iteru [2.4K]

Answer:

x=15 degree

Step-by-step explanation:

5x +5+6x -1+3x+5x+3+4x+8 =360 degree (exterior angles of pentagon is 360 degree)

23x +15 =360

23x=360-15

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x=345/23

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4 0

2 years ago

Write a quadratic equation with roots of 3/4 and -4

Vaselesa [24]

A quadratic equation given roots is solved by using the relation

${x}^{2} - (sum \: of \: roots)x + product \: of \: roots$

from the question,

sum of the root will be

$\frac{3}{4} + ( - 4) = \frac{3}{4} - 4$

$= \frac{3 - 16}{4}$

$= \frac{ - 13}{4}$

and also, product of the roots will

$\frac{3}{4} \times ( - 4) = - 3$

now substituting the sum of roots and product of roots into the equation

${x}^{2} - ( - \frac{13}{4} )x - 3$

$= {x}^{2} + \frac{13}{4} x - 3$

as the quadratic equation for the root 3/4 and -4

4 0

3 years ago

Expand to write an equivalent expression -1/2 (-6x+8y) <br><br>(Pleasee help i need an answer rqqqq)

Alik [6]

Answer:

$- \frac{1}{2} ( - 6x + 8y) \\ = \frac{1}{2} (6x - 8y) \\ = 3x - 4y$

6 0

2 years ago