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2 years ago

What value of x makes the equation below true 5(x − 8) + 26 = −9? A 1 B -1 C 15 D -15

Mathematics

1 answer:

GalinKa [24]2 years ago

8 0

Answer is A which is 1

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Evaluate the expression 5k2 - 7k when k = 3

VikaD [51]

Answer:

Step-by-step explanation:

In this question, you have to solve by plugging in the value to the "k" variable and solve.

Solve:

5(3)^2 - 7(3)

3^2 = 9

5(9) - 7(3)

45 - 7(3)

45 - 21 = 24

Your final answer would be 24.

4 0

2 years ago

Read 2 more answers

Which is 144 written as a power of a number

s2008m [1.1K]

12^2 What is it's square root or basically you could divide it so it's 12 to the power of 2 or 12^2

5 0

3 years ago

Graph by using the slope and the y intercept.

Mashutka [201]

1. a) equation of the line :

$y = \dfrac{2}{5}x - 7$

y - intercept = -7

so, it will pass through point (0, -7)

and if we plug the value of x as 5, we get

$y = (\dfrac{2}{5} \times 5) - 7$

$y = 2 - 7$

$= - 5$

so, it will pass through point (5, -5) too

now, just plot the points (0 , -7) and (5 , -5) and join them.

2. b) equation of line is :

$y = - 3x + 5$

here, y - intercept = 5

so the line passes through point (0 , 5)

now, Plugging the value of x = 1 we get :

$y =( - 3 \times 1) + 5$

$y = - 3 + 5$

$y = 2$

so, the given line passes through point (1 , 2)

plotting the points, we can get our required line.

6 0

3 years ago

Y=x2<br> x=-3 -2 -1 0 1 2 3<br> y=

brilliants [131]

Answer:

see below

Step-by-step explanation:

Y=x^2

x=-3 -2 -1 0 1 2 3

y=(-3)^2 (-2)^2 (-1)^2 0^2 1^2 2^2 3^2

9 4 1 0 1 4 9

7 0

3 years ago

Consider randomly selecting a single individual and having that person test drive 3 different vehicles. Define events A1, A2, an

zmey [24]

a. Use the inclusion/exclusion principle.

$P(A_1\cap A_2)=P(A_1)+P(A_2)-P(A_1\cup A_2)=0.55+0.65-0.80=0.40$

b. By definition of conditional probability,

$P(A_2\mid A_3)=\dfrac{P(A_2\cap A_3)}{P(A_3)}=\dfrac{0.50}{0.70}\approx0.7143$

4 0

3 years ago