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HACTEHA [7]
3 years ago
14

Plz give me ans fast.​

Mathematics
1 answer:
WARRIOR [948]3 years ago
7 0

Answer:

Shopping malls are replacing small shops

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Kami bought 3 1/2 pounds of nectarines for $1.75 and 1 3/5 pounds of oranges for $0.60. Which fruit costs less per pound?
erastovalidia [21]
Nectarines would be the correct answer
6 0
3 years ago
Prove the following identity :<br>Sin α . Cos α .<br> Tan α =  (1 – Cos<br> α)  (1 + Cos<br> α)
Umnica [9.8K]
Let's work on the left side first. And remember that
the<u> tangent</u> is the same as <u>sin/cos</u>.

sin(a) cos(a) tan(a)

Substitute for the tangent:

[ sin(a) cos(a) ] [ sin(a)/cos(a) ]

Cancel the cos(a) from the top and bottom, and you're left with

[ sin(a) ] . . . . . [ sin(a) ] which is [ <u>sin²(a)</u> ]  That's the <u>left side</u>.

Now, work on the right side:

[ 1 - cos(a) ] [ 1 + cos(a) ]

Multiply that all out, using FOIL:

[ 1 + cos(a) - cos(a) - cos²(a) ]

= [ <u>1 - cos²(a)</u> ] That's the <u>right side</u>.

Do you remember that for any angle, sin²(b) + cos²(b) = 1  ?
Subtract cos²(b) from each side, and you have sin²(b) = 1 - cos²(b) for any angle.

So, on the <u>right side</u>, you could write [ <u>sin²(a)</u> ] .

Now look back about 9 lines, and compare that to the result we got for the <u>left side</u> .

They look quite similar. In fact, they're identical. And so the identity is proven.

Whew !





4 0
3 years ago
Read 2 more answers
Joyce makes bracelets that she sells for $1.25 each. If she sells 40 of her bracelets, how much money will she make
Anna35 [415]

1.25x40=50

joyce should make $50

7 0
3 years ago
6. Name the polygon. Write whether it is regular<br> or not regular
slamgirl [31]

Answer:

this shape is a pentagon. this is a regular shape because all the sides are even and all the angles on the inside are also even.

Step-by-step explanation:

pls mark brainliest!

7 0
3 years ago
PLZ HELP ASAP MARK BRAINLIEST VIEW PICTURE!!
krok68 [10]

Answer: The second option

Step-by-step explanation: 14mph times 5 equal 70. 5 hours after 6 am is 11 am. 70 divided by 20 is 3.5. 3.5 hours after 6 am is 9:30. Hence 9:30 to 11

7 0
2 years ago
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