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3 years ago

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What is the value of (3 - ) x 52 + expressed in simplest form?

2 answers:

ludmilkaskok [199]3 years ago

8 0

C.) 12.5 - skkdjsndjsnsnsnsnns

Paraphin [41]3 years ago

5 0

Answer:

C

Step-by-step explanation:

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Use elimination to solve each system of equations<br> 2x-y=-1<br> 3x-2y=1

mixer [17]

$2x-y=-1 \ \ \ |\times (-2) \\
3x-2y=1 \\ \\
-4x+2y=2 \\
\underline{3x-2y=1 \ \ \ \ } \\
-4x+3x=2+1 \\
-x=3 \ \ \ |\times (-1) \\
x=-3 \\ \\
2x-y=-1 \\
2 \times (-3)-y=-1 \\
-6-y=-1 \ \ \ |+6 \\
-y=5 \ \ \ |\times (-1) \\
y=-5 \\ \\
\boxed{(x,y)=(-3,-5)}$

8 0

3 years ago

Read 2 more answers

Invested $8200 at the rate of 4.5% p.a. It earned $738 simple interest. The

Igoryamba

Answer:

2 yrs

Step-by-step explanation:

SI =PTR/100

738=8200 x T x 4.5 /100

738 x 100 / 8200 x 4.5 = T

T =2

3 0

2 years ago

Work out the value of: 3x + 2y when x equals -3 and y equals -4

Mazyrski [523]

replace the numbers given for x & y so

the equation becomes 3*(-3) + 2*(-4) =

3*-3 = -9

2*-4 = -8

-9 + -8 = -17

6 0

3 years ago

Jonah will cover a cube in wrapping paper. Each edge of the cube is 2.5 cm long. What is the least amount of wrapping paper he n

cricket20 [7]

Answer:20

Step-by-step explanation:

8 is the number of edges so 8 mutiplyed by 2.5= 20

8 0

3 years ago

Which pair of complex factors results in a real-number product?

Crank

we will proceed to solve each case to determine the solution of the problem

we know that

$i^{2} =-1$

<u>case A</u>. $15*(-15i)$

$15*(-15i)=-225i$

<u>The result of case A is not a real number product</u>

<u>case B</u>. $3i*(1-3i)$

$3i*(1-3i)=3i*(1)-(3i)*(3i)\\=3i-9i^{2}\\=3i-9*(-1)\\=3i+9$

<u>The result of case B is not a real number product</u>

<u>case C</u>. $(8+20i)*(-8-20i)$

$(8+20i)*(-8-20i)=8*(-8)+8*(-20i)+20i*(-8)-20i*(20i)\\=-64-160i-160i-400i^{2}\\=-64-320i-400*(-1)\\=-64-320i+400\\=336-320i$

<u>The result of case C is not a real number product</u>

<u>case D</u>. $(4+7i)*(4-7i)$

$(4+7i)*(4-7i)=4^{2} -(7i)^{2}\\=16-49i^{2}\\=16-49*(-1)\\=65\\$

<u>The result of case D is a real number product</u>

therefore

<u>the answer is the option</u>

$(4+7i)*(4-7i)$

8 0

3 years ago

Read 2 more answers