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3 years ago

Find the value(s) of k so that the points (-3,2) and (9, k) are 13 units apart.

Mathematics

1 answer:

topjm [15]3 years ago

3 0

Answer: k = 11

Step-by-step explanation: math

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If 3x + 6y = 7z, find x + 2y in terms of z.

o-na [289]

Answer:

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3 years ago

Twice a number plus 6 times the number is -72.

katen-ka-za [31]

Answer:

The number is -9

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7 0

3 years ago

If the length of a rectangular playground is represented by the expression 2x - 3, and the width is represented by 5x + 9, what

Nimfa-mama [501]

Answer:

The expression for area of rectangle in standard form is: $10x^2+3x-27$

Step-by-step explanation:

The area of rectangle is given by:

$Area = Length * Width$

Here, in the question, we are given length and width of the rectangle

Length = 2x-3

Width = 5x+9

The area of the rectangle will be:

$Area = (2x-3)(5x+9)\\= 2x(5x+9)-3(5x+9)\\= 10x^2+18x-15x-27\\= 10x^2+3x-27$

Hence,

The expression for area of rectangle in standard form is: $10x^2+3x-27$

3 0

3 years ago

Perform the following operations and write the answers in radical form. Part A:√7+√3+√98−√18 Part B:3√5−3√11+2√121−3√90

Sveta_85 [38]

Answer:

$\sqrt{7}+\sqrt{3}+4\sqrt{2}$
$3\sqrt{5}-3\sqrt{11}+22-9\sqrt{10}$

Step-by-step explanation:

Part A ;

$\sqrt{7} +\sqrt{3} +\sqrt{98} -\sqrt{18} \\\\\sqrt{98}=7\sqrt{2}\\\sqrt{18}=3\sqrt{2}\\\\=\sqrt{7}+\sqrt{3}+7\sqrt{2}-3\sqrt{2}\\\\\mathrm{Add\:similar\:elements:}\:7\sqrt{2}-3\sqrt{2}=4\sqrt{2}\\\\=\sqrt{7}+\sqrt{3}+4\sqrt{2}$

Part B ;

$3\sqrt{5} - 3\sqrt{11} + 2\sqrt{121} -3\sqrt{90} \\\\2\sqrt{121}=22\\3\sqrt{90}=9\sqrt{10}\\\\=3\sqrt{5}-3\sqrt{11}+22-9\sqrt{10}$

8 0

4 years ago

If a 8 yard string was cut into 8/9. How many can she cut?

Verizon [17]

Answer:

Step-by-step explanation:

8 ÷ $\frac{8}{9}$

Keep the first number

Change the sign

Flip the fraction

$\frac{9}{8}$

8 x 9/8 = 72/8 = 9

8 0

4 years ago