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chubhunter [2.5K]
3 years ago
13

Which algebraic expression is equivalent to the expression below?

Mathematics
1 answer:
V125BC [204]3 years ago
4 0
Let's simplify step-by-step.<span><span>5<span>(<span><span>4x</span>+3</span>)</span></span>+<span>5<span>(<span>9−x</span>)</span></span></span>Distribute:<span>=<span><span><span><span><span>(5)</span><span>(<span>4x</span>)</span></span>+<span><span>(5)</span><span>(3)</span></span></span>+<span><span>(5)</span><span>(9)</span></span></span>+<span><span>(5)</span><span>(<span>−x</span>)</span></span></span></span><span>=<span><span><span><span><span>20x</span>+15</span>+45</span>+</span>−<span>5x</span></span></span>Combine Like Terms:<span>=<span><span><span><span>20x</span>+15</span>+45</span>+<span>−<span>5x</span></span></span></span><span>=<span><span>(<span><span>20x</span>+<span>−<span>5x</span></span></span>)</span>+<span>(<span>15+45</span>)</span></span></span><span>=<span><span>15x</span>+<span>60

Answer is B</span></span></span>
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Xavier, Yessie, and Zorro each choose a different favorite positive fraction. Each fraction is in simplest form. Yessie's fracti
ad-work [718]
Let Xavier's favourite fraction be a/b, Yessie's favourite fraction = b/a and Zorro's favourite fraction = c/d,

c/d x a/b = 12/35 . . . . . . . . (1)
c/d x b/a = 15/7 . . . . . . . . (2)

(1) x (2) = c/d x a/b x c/d x b/a = 12/35 x 15/7
 c^2 / d^2 = 36/49
c^2 = 36
c = 6
d^2 = 49
d = 7

Xaviers favourite fraction = 12/35 / 6/7 = 2/5
Yessies favourite fraction = 5/2
Zorro favourite fraction = 6/7
8 0
3 years ago
I need the answers for 5 and 6 please and make sure they are accurate , thank you :)
velikii [3]

Answer:

5. 6+6i

6. -2+(6\sqrt{3})i

Step-by-step explanation:

well, u just need to calculate

7 0
3 years ago
Kyle's car repair costs $1000. He has 2 coupons which could save him $80 off of $1000, or 15% off of $1000. EXPLAIN WHICH COUPON
never [62]
Answer:

Kyle would save more using his 15% off of $1000 coupon.

Explanation:

15 ÷ 100 • 1000 = 150

1000 - 150 = $850

$150 is the amount the 15% coupon took off.

$850 is the amount Kyle will pay.

vs.

1000 - 80 = $920
6 0
2 years ago
Can someone explain this? :)
Alchen [17]

I'll do part (a) to get you started.

The angle 'a' pairs up with the 123 degree angle as a corresponding angle pair. Due to the parallel lines, the corresponding angles are congruent. Therefore a = 123.

We also see that b = 123 as well since a = b (they are vertical angles).

Notice how angle c is adjacent to the 123 degree angle. These two angles form a straight line, so they must add to 180 degrees.

c+123 = 180

c = 180-123

c = 57

-------------------------

To summarize, we have these three angles

a = 123

b = 123

c = 57

6 0
3 years ago
Read 2 more answers
Jordan has 3.2 liters of paint left. how can she convert this number to millileters?
Olenka [21]
See attached photo.

~

8 0
3 years ago
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