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3 years ago

Two less than two thirds times a number is ten

Mathematics

1 answer:

beks73 [17]3 years ago

6 0

Let the number be x
2/3*x - 2 = 10
or, 2/3 * x =12
or x= 12*3/2
or, x = 18

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I dont know how to make 0.3 as a fraction and then simplify.

Lapatulllka [165]

0.3 is 3/10, (which is already simplified) because .3 is out of 1. Which means that that 1 is 10. Which is 3/10.

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4 years ago

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What's must be added to the number below to make it divisible by 11 82604_9

Alex777 [14]

Answer:

Step-by-step explanation:

82604<u>3</u>9 / 11 = 750949

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4 years ago

-3x - 3y = 3<br> y = -5x - 17 <br> (solve by substitution)

kakasveta [241]

Answer:

X = -4, y = 3

Step-by-step explanation:

Plug it in

-3x - 3(-5x - 17) = 3

-3x + 15x + 51 = 3

12x + 51 = 3

12x = -48

x = -4

plug it in to find y

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3 years ago

20 and 1/2 feet times 13 and 1/8 feet is what total

vodka [1.7K]

Answer:

269 and 1/16 feet total (or 269.0625 feet to be precise)

Step-by-step explanation:

20 and 1/2 = 20.5

13 and 1/8 = 13.125

20.5 * 13.125 = 269.0625 feet = 269 and 1/16 feet

4 0

3 years ago

Find the area of the parallelogram that has adjacent sides Bold u equals Bold i minus 2 Bold j plus 2 Bold kand Bold v equals 3

Mice21 [21]

Answer:

The area of the parallelogram is $A=\sqrt{26}$ .

Step-by-step explanation:

Let's rewrite these two vectors:

$u=i-2j+2k$

$v=0i+3j-k$

Let's recall that the area of the parallelogram is the magnitude of the cross product between these vectors.

We can use the Determinant method to find it.

$u \times v=\left[\begin{array}{ccc}i&j&k\\1&-2&2\\0&3&-1\end{array}\right] = i((-2)*(-1)-2*3)-j(1*(-1)-2*0)+k(1*3-(-2)*0)=i(2-6)-j(-1)+k(3)=-4i+j+3k$

Now, the magnitude is the square root of each component squared. It will be:

$|u \times v|=\sqrt{(-4)^{2}+(1)^{2}+(3)^{2}}=\sqrt{16+1+9}=\sqrt{26}$

Therefore the $A=\sqrt{26}$ .

I hope it helps you!

8 0

3 years ago