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Gnom [1K]
3 years ago
10

Anyone can help wright answers only

Mathematics
1 answer:
dimaraw [331]3 years ago
7 0

Answer:

subtitute the value of x and y to the expression.

Step-by-step explanation:

21.

4 {x}^{2}  + 30y = 4  \times {7}^{2}  + 30 \times 2

= 196 + 60 = 256

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Justly your solution
erastovalidia [21]

Answer:

yes

Step-by-step explanation:

6 0
3 years ago
The price of a hat is $27.When it goes on sale, it wll be 1/3.How much would you save if you were to buy ti on sale
Bond [772]

Answer:

You would save $18

Step-by-step explanation:

(27/3)*2 = $18

5 0
3 years ago
Solve the following equation
NISA [10]

Answer:

n = -13

Step-by-step explanation:

38 = -2n + 12

<em>Subtracting</em><em> </em><em>1</em><em>2</em><em> </em><em>from</em><em> </em><em>both</em><em> </em><em>sides</em><em>:</em>

==> 38 - 12 = -2n + 12 - 12

==> 26 = -2n

<em>multiplying both sides by (-1)</em><em>:</em>

==> -26 = 2n

<em>dividing</em><em> </em><em>both</em><em> </em><em>sides by 2:</em>

==> -13 = n

3 0
3 years ago
Read 2 more answers
A car travels 15 km in 13 minutes. What is its average speed in km/h?
Bogdan [553]

Answer:

  • 69.45 km/h

Step-by-step explanation:

  • Speed = Distance/Time
  • => Speed = 15 km ÷ 13/60
  • => Speed = 15 km ÷ 0.216
  • => Speed = 15 km/0.216
  • => Speed = 15 x 4.63/0.216 x 4.63
  • => Speed = 69.45 km/1 h (Approximate)

<u>Conclusion:</u>

  • Therefore, the speed is 69.45 km/h (Approximate)

Hoped this helped.

3 0
3 years ago
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rosijanka [135]

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304oz

Step-by-step explanation:

4 0
3 years ago
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