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4 years ago

How do u estimate 92×68? Add the finished product Too.

1 answer:

6 0

You round 92 to 90. Then you round 68 to 70. Now you know that 9x7 = 63. You add to zeros to that answer and get 6300. So 92x68 is about 6300. The actual answer of the problem 6256 that will round up to 6300

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Ymorist [56]

Ummm hmm this is a hard one..... I believe it’s 88?

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3 years ago

Charles has been assigned several chores around the house. He washes the supper dishes every fifth day, he takes out the trash e

EleoNora [17]

2 times a month is how much he does it

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3 years ago

72 is what percent of 480

VLD [36.1K]

72 is 15% of 480. if you divide 72 by 480 it gives you .15 and then you mutiply the .15 by 100

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3 years ago

Solve the following equations;- x - 9 /√x + 3 =1

fgiga [73]

Answer:

13 , 6.

Step-by-step explanation:

A equation is given to us and we need to find out the value of x . The given equation to us is ,

$\sf\implies \dfrac{ x -9}{\sqrt{x+3}}= 1$

Cross multiply ,

$\sf\implies x - 9 =\sqrt{ x +3}$

Squaring both sides ,

$\sf\implies (x - 9)^2 = x + 3$

Simplify the whole square ,

$\sf\implies x^2+9^2-2.9.x = x +3 \\$

$\sf\implies x^2+81 - 18x = x -3$

Add 3 and subtract x on both sides ,

$\sf\implies x^2 -18x-x +81-3=0$

Simplify ,

$\sf\implies x^2 -19x +78=0$

Split the middle term of the quadratic equation,

$\sf\implies x^2-13x-6x+78=0$

Take out common ,

$\sf\implies x( x -13)-6(x-13)=0$

Take out ( x -13 ) as common ,

$\sf\implies ( x -13)(x-6)=0$

Equate both factors to 0 ,

$\sf\implies \boxed{\pink{\sf x = 13,6}}$

Hence the value of x is 13 or 6 .

7 0

3 years ago

Please help to solve it step by step, (show working) please help me

ANTONII [103]

I'm assuming you only need the first triangle. You didn't specify. If you need it after I answer the first one I'll be happy to help though.

To find the area of a triangle you go b(h)/2=a

6cm(3cm)/2
18/2
Area=9

To find the perimeter you add all of the sides together.

4+4+6=P
4+10=P
14= Perimeter

7 0

4 years ago