2 years ago

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Mathematics

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sergij07 [2.7K]2 years ago

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Ask your teacher hfjsjcnjensjte

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Solve: 2x2-x = 21 {-7/2,3} {-3, 7/2}

Sergio039 [100]

Answer:

The answer is (-3,7/2)

Step-by-step explanation:

$2 {x}^{2} - x - 21 = 0 \\ (2x - 7)(x + 3) = 0 \\ 2x - 7 = 0 \: \: \: or \: \: x + 3 = 0 \\ x = \frac{7}{2} \: \: and \: x = - 3$

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3 years ago

Trent, Linda and Pam paint a poster that is 4 feet long. They each paint an equal amount. How many feet does each student paint

tester [92]

They each paint a part of the poster that is 1.333 or 1 1/3 feet long. Hope this helps:)

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3 years ago

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Ksivusya [100]

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Step-by-step explanation:

Im doing it for points

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2 years ago

al atardecer un árbol proyecta una sombra de 2,5 m de longitud. Si la distancia desde la parte más alta del árbol al extremo más

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2 years ago

Find the values of the power in the following pattern: (10)1, (10)2, (10)3, (10)4....Describe the pattern, and use it to evaluat

Irina18 [472]

10^1 = 10
10^2 = 100 {10 x 10 = 100}
10^3 = 1000 {10 x 10 x 10 = 1,000}
10^4 = 10000 {10 x 10 x 10 x 10 = 10,000}

The exponent represents how many zeros will be used in the answer. For example, 10^6 would include 6 zeros in it’s answer; 1,000,000.

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3 years ago