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Ksenya-84 [330]
3 years ago
6

Х+ 2y = -1 2x – Зу = 12

Mathematics
1 answer:
yarga [219]3 years ago
4 0
Use substitution method
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How do you simplify the value of (28x^4)÷(12x^3)?
d1i1m1o1n [39]
(28x^4) \div (12x^3) =  \dfrac{28x^4}{12x^3}  =  \dfrac{4 \times 7x^4}{4 \times 3 x^3} =  \dfrac{7}{3} x^{4-3} = \dfrac{7}{3} x
5 0
3 years ago
Can someone help me <br> Please and thank you!!
Arada [10]

Answer:

im pretty sure the answer is 150

Step-by-step explanation:

hope this helps <3

8 0
4 years ago
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(2x-6)(x+11)<br><br>a)x2-66x+16<br><br>b)x2+16x+11<br><br>c)2x2+16x-66<br><br>d)2x2+11x-66
natka813 [3]
The answer to your math problem is C. The reason being is 2x times x is 2x^2 and 2x times 11 is 22x. So you first part of the problem looks like 2x^2+22. Then -6 times x is -6x and -6 times 11 is -66. So now the problem is 2x^2+22x-6x-66. So your answer after solving it is 2x^2+16x-66.
3 0
3 years ago
Considere um triângulo retângulo, cujos ângulos agudos a e b satisfazem à condição cos a = 0,8 e cos b = 0,6 Determine a área de
Anni [7]

Answer:

7.5 cm^2

Step-by-step explanation:

Aqui, temos Cos A = 0,8 = 8/10 = 4/5.

Cos B = 0,6 = 6/10 = 3/5.

O que isto significa é que os dois outros lados do triângulo retângulo são 3 cm e 5 cm, respectivamente.

Isso ocorre porque, o oposto do ângulo agudo A é adjacente ao ângulo agudo B e vice-versa.

Portanto, a partir dos valores de ambos, podemos obter os dois outros lados.

Matematicamente, a área da direita é 1/2 * b * h b e h são 3 e 5, respectivamente.

Assim, área = 1/2 * 3 * 5 = 7,5 cm ^ 2

7 0
3 years ago
Wtite down Three of the first six square numbers are two more than a prime number​
olga2289 [7]

Answer:

4, 9 and 25.

Step-by-step explanation:

4 because 4 = 2 + 2     ( 2 being prime)

9 because 9 = 7 + 2     (7 being prime).

25 because 25 = 23 + 2 (23 being prime).

5 0
3 years ago
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