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valkas [14]
3 years ago
12

HELP How does the subtraction part of the expression change when a(b - c) is expanded?

Mathematics
1 answer:
drek231 [11]3 years ago
7 0

Answer:

The variables change

Step-by-step explanation:

Since we can't subtract c from -b we multiply both variables by  a because the question is telling us to subtract b and c then multiply the awnser by a, but we don't know what b and c is so we just multiply b and c by a. In the end we get ab-ac

     

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*****For this question round to the nearest hundredth. Express the total in scientific notation (12 x 10^3) + (4.2 x 10^-4)
viktelen [127]

12000

.00042

when multiplying a positive you move to the right how much multiplied by

when multiplying a negative exponent you move to the left how much multiplied by

8 0
4 years ago
How do I solve this ?
pashok25 [27]
M(CE) = 78 + 78*4/26 = 90
6 0
3 years ago
Read 2 more answers
2. John and Jen went to the farmers market to buy fruit. John bought 3 boxes of oranges and 9 boxes of cherries for $78. Jen bou
jenyasd209 [6]

Answer:

Let the cost of orange be X and cost of cherry be y

3x + 9y = 78

8x + 4y = 58

Solving equation using elimination method

multiplying eq 1 with 8 and eq 2 with 3

8(3x + 9y ) = 78(8)

3( 8x + 4y) = 3(58)

24x + 72 y = 624

24x + 12y = 174

subtracting,

60 y = 450

y = 7.5

3x + 9(7.5) = 78

3x + 67.5 = 78

3x = 78 - 67.5

3x = 10.5

x = 3.5

<h2>Box of orange = $3.5 </h2><h2>Box of cherry = $7.5</h2>
7 0
2 years ago
PLEASE HELP NEED THIS ONE TO PASS ALGEBRA
Irina18 [472]

Answer:

m = 200N

Step-by-step explanation:

3000N = m(15m/s²)            Divide both sides by 15 to find the mass

200N = m

6 0
3 years ago
Write the expression as the sine, cosine, or tangent of an angle. sin 5x cos x - cos 5x sin x
mrs_skeptik [129]

Answer:

sin 5x cos x - cos 5x sin x = sin(4x)

Step-by-step explanation:

Given that the trigonometric expression,

sin 5x cos x - cos 5x sin x

Here we use the "sum and difference formulas"

Sum and Difference Formulas

sin(A+B)=sin A cos B + cos A sin B

sin(A-B)=sin A cos B - cos A sin B

cos(A+B)=cos A cos B - sin A sin B

cos(A-B)=cos A cos B + sin A sin B

So,

sin 5x cos x - cos 5x sin x = sin (5x - x)

sin 5x cos x - cos 5x sin x =  sin(4x)

That's the final answer.

6 0
4 years ago
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