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4 years ago

If I write 3x3 can we solve this problem using addition

Mathematics

2 answers:

Karolina [17]4 years ago

4 0

Yes,Indeed. The answer will be 3+3+3+3+3+3+3+3+3.

lbvjy [14]4 years ago

4 0

Yes you can since 3times 3 is 9 you can say three +four is 9

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A ray is a defined term because it ?

Feliz [49]

A ray is a defined term because it has no width or depth is described using an undefined term has an informal definition travels forever in one way

8 0

3 years ago

Find the cosine of angle B.

Alexandra [31]

$\boxed { \text {Cosine Rule : } a^2 = b^2 + c^2 - 2bc \cos(A) }$

9² = 12² + 15² - 2 (12) (15) cos (B)

81 = 144 + 225 - 360 cos(B)

81 = 369 - 360 cos (B)

360 cos (B) = 369 - 81

360 cos (B) = 288

cos (B) = 0.8

Answer: Cosine B = 0.8

$\boxed { \text {Cosine Rule : } a^2 = b^2 + c^2 - 2bc \cos(A) }$

12² = 15² + 9² - 2 (15)(9) cos (A)

144 = 225 + 81 - 270 Cos A

144 = 306 - 270 Cos A

270 Cos A = 162

Cos A = 3/5 or 0.6

Answer: Cosine Angle A = 3/5

4 0

3 years ago

I need help with this badddddddddd

tiny-mole [99]

Answer:

She forgot to add the zero when she multiplied 27 x 50

Step-by-step explanation:

If you need one ask me I can try my best to explain

5 0

3 years ago

What is the sum of the series?

Mamont248 [21]

Answer:

Step-by-step explanation:

Since the values are relatively small substitute i = 1 to 5 into 3i and sum

(3 × 1) + (3 × 2) + (3 × 3) + (3 × 4) + (3 × 5)

= 3 + 6 + 9 + 12 + 15

= 45

6 0

4 years ago

To earn money for a contest, the math team pays $40 for a box of spirit banners. They sell each banner for $3.50. Write an equat

ankoles [38]

Answer:

$3.5b - 40$ where $b$ is the amount of banners sold.

Step-by-step explanation:

We know the team has already spent $40, and they earn #3.5 per banner.

Hence, with $b$ representing the amount of banners sold, the equation is $3.5b - 40$

7 0

4 years ago