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3 years ago

-16 = -5a -21. Plz help. Show work if possible. Pre-Algebra is hard. :(

Mathematics

1 answer:

Leona [35]3 years ago

5 0

Answer:

a = -1

Step-by-step explanation:

-16 = -5a - 21 (Given)

5 = -5a (Added 21 on both sides)

-1 = a (Divided -5 on both sides)

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Select all the expressions that represent a correct solution to the equation 6(×+4)=20

kozerog [31]

Answer:

the solution $x = \frac{-2}{3}$

Step-by-step explanation:

Given equation is 6 ( x+4) =20

<u>Distributive property</u>:-

a .(b + c) = a .b + a . c

Given equation is 6 ( x+4) =20

by using distributive property 6 .x + 6.4 =20

6x +24 =20

subtracting '24' on both sides, we get

6x +24 -24 = 20 -24

6x = -4

dividing by '6' on both sides, we get

$\frac{6x}{6} = \frac{-4}{6}$

$x = \frac{-4}{6}$

<u>Final answer</u> :-

the solution of given equation is $x = \frac{-2}{3}$

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4 years ago

Horse hair cost $0.35 per pound.write an equation used to find c, the total cost of h pounds of horse hair?

olya-2409 [2.1K]

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4 years ago

Pls help !! - Using the graph below, what is the rule for a translation form point A to point D?

Rzqust [24]

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3 years ago

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Use the x-intercept method to find all real solutions of the equation. x^3-8x^2+17x-10=0

abruzzese [7]

Answer:

$x^3-8x^2+17x-10=(x-5)(x-2)(x-1)$

Step-by-step explanation:

Given : Equation - $x^3-8x^2+17x-10=0$

To Find : All real solutions of the equation

Step1 - Write the equation :

$x^3-8x^2+17x-10=0$

Step 2 : To find the x-intercept we plot the graph,

when we plot the graph the points where y=0 are the x-intercept

Step 3: Points where y=0 are 5,2,1 (shown in the attached graph)

Therefore, (x-5)(x-2)(x-1) are the solutions of the equation.

Hence, $x^3-8x^2+17x-10=(x-5)(x-2)(x-1)$

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3 years ago

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Consider a problem where we are rolling 2 dices where each dice has 6 faces numbered from 1 to 6.Answer the following questions:

Sergeeva-Olga [200]

Answer:

1. See Explanation for Sample Space

2. $P(10) = \frac{1}{12}$

3. $P(6) = \frac{5}{36}$

Step-by-step explanation:

Given

Roll of Two die

Solving (1): The Sample Space

Represent the first dice with S1 and the second with S2

$S_1 = \{1,2,3,4,5,6\}$

$S_2 = \{1,2,3,4,5,6\}$

The sample space of both die is:

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