All categories

3 years ago

Please answer both I'm really struggling with my homework

Mathematics

2 answers:

Alex Ar [27]3 years ago

4 0

1/64 & 16
hope that helped :)

agasfer [191]3 years ago

3 0

Answer:

$D. \frac{1}{64}$
C. 16

Step-by-step explanation:

Second question:

$2^{3}$ = 2 × 2 × 2 = 8
Plug 8 in: 6 ÷ 3 × 8
6 ÷ 3 = 2
Plug 2 in: 2 × 8 = 16

I hope this helps!

You might be interested in

13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$

6 0

1 year ago

How do you answer this equation?<br> 5a - 12 = 48

IgorC [24]

Add 12 to both sides resulting in 5a = 60 and then divide both sides by 5 which results in a = 12 so your answer will be a = 12

8 0

2 years ago

Does anyone wanna do this for me? I don't wanna do it.

MakcuM [25]

Um I'm good that looks so confusing sorry. TwT

8 0

3 years ago

Solve the system of linear equations below. 4x - 3y = 17 5x + 4y = 60

LenaWriter [7]

4x-3y=17......(1)
5x+4y=60......(2)

Multiply equation (1) by 4 and equation (2) by 3:-

16x - 12y = 68
15x + 12y = 180

Adding these 2 equations:_

31x = 248
x = 248/31 = 8

Now substitute x = 8 in equation (1):-

4(8) - 3y = 17
32-3y = 17
-3y = -15
y = -15/-3 = 5

So solution is x=8,y=5

5 0

3 years ago

What is 1+1? Need help with my son's online school I never went to school so no one has ever taught me math

goldfiish [28.3K]

Answer:

Step-by-step explanation:

.3.

4 0

3 years ago