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hammer [34]
3 years ago
8

Simplify the expression (2i-5j)×(3i+4j)​

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
3 0

Answer:

-6-7ji-20j^(2)

Step-by-step explanation:

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1. Find f(3) for<br> the function<br> below.<br> f(x) = 4^x
Wewaii [24]

Answer:

64

Step-by-step explanation:

f(x) = 4^x,

When x = 3,

=> f(3) = 4^3

= 4 * 4 * 4

= 64

7 0
3 years ago
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-20 divided by -4/3<br> What is it?
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The answer is 15. hope this helps ;-D
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Burger joint is celebrating their grand opening. For 2 milkshakes and 3 burgers the cost is $13. For 5 milkshakes and 7 burgers
snow_tiger [21]

Answer:

A milk shake is 2 dollars, a burger is 3 dollars.

Step-by-step explanation:

8 0
3 years ago
How to solve 3(x+5)=8x
ipn [44]
3(x+5)=8x~~~First we distribute (we multiply 3 by x and 3 by 5)
3x+15=8x~~~Remove 3x from both sides
-3x       -3x
15=5x~~~~Turn this equation around so x is on the other side
5x=15~~~Divide by 5x
÷5x ÷5x

x=3

7 0
3 years ago
Land in downtown Columbia is valued at $10 a square foot. What is the value of a triangular lot with sides of lengths 119, 147,
stiks02 [169]

Answer:

$87,461

Step-by-step explanation:

Given that the dimensions or sides of lengths of the triangle are 119, 147, and 190 ft

where S is the semi perimeter of the triangle, that is, s = (a + b + c)/2.

S = (119 + 147 + 190) / 2 = 456/ 2 = 228

Using Heron's formula which gives the area in terms of the three sides of the triangle

= √s(s – a)(s – b)(s – c)

Therefore we have = √228 (228 - 119)(228 - 147)(228 - 190)

=> √228 (109)(81)(38)

= √228(335502)

=√76494456

= 8746.1109071 * $10

= 87461.109071

≈$87,461

Hence, the value of a triangular lot with sides of lengths 119, 147, and 190 ft is $87,461.

6 0
3 years ago
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