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Mandarinka [93]
3 years ago
15

Solve -3(5x-9) please

Mathematics
2 answers:
marissa [1.9K]3 years ago
5 0

Answer:

12

Step-by-step explanation:

Galina-37 [17]3 years ago
3 0

Answer:

−15x + 27

Step-by-step explanation:

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Sistema de ecuaciones.5x+2y=-152x-2y=-6
Zolol [24]

Tnemos el sisema de ecuaciones:

\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}

Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}

Respuesta: x=-3, y=0

7 0
1 year ago
Compare.Use &lt;,&gt;,or =.<br><br> 1,000 ft _____ 300 yd
frosja888 [35]
1000ft > 300 yd

1ft=3yd
1000ft=333.33yd
5 0
4 years ago
Read 2 more answers
Solve 9(t-7)=u for t<br> Show all solving steps.
Gwar [14]

\begin{gathered}\\ \sf\longmapsto 9(t-7)=u\end{gathered}

\begin{gathered}\\ \sf\longmapsto 9t-63=u\end{gathered}

\begin{gathered}\\ \sf\longmapsto 9t=u+63\end{gathered}

\begin{gathered}\\ \sf\longmapsto \frac{9t}{9}=\frac{u+63}{9}\end{gathered}

\begin{gathered}\\ \sf\longmapsto t=\frac{u+63}{9} \end{gathered}

\begin{gathered}\\ \sf\longmapsto t=\frac{u}{9}+7\end{gathered}

3 0
3 years ago
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What is 1/2 to the negative power of 2 using exponent rules
Otrada [13]
Negative exponents mean that the base is on the wrong side of the fraction line. For example, x^-2 is the same as 1/x^2. In this example, 1/2^-2 would be 2.

2/1^2 = 2
7 0
3 years ago
Use any problem stragey
Scilla [17]

Answer:

He planted 44 fields do corn, and 22 each for wheat and grass.

Step-by-step explanation:

There are three subjects. If we have something that was 2x as much as wheat, and then something half as much as that, we know that the wheat and grass are equal. Then, you just need to think about how a 50 25 25 split would work out of 88.

8 0
3 years ago
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