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adell [148]
4 years ago
15

Giovanni justifies whether the expression –4x – 8 is equivalent to Negative 2 (x + 1) minus 2 (x + 3) by letting x = 3 in both e

xpressions. What is the value of each expression when x = 3? 3 and –20 4 and 4 –20 and –20 3 and 4
Mathematics
2 answers:
Vladimir [108]4 years ago
6 0

Answer:

When x = 3, the solutions to the expressions are–20 and –20

Step-by-step explanation:

–4(3) – 8   Multiply

-12 - 8       Subtract

-20

-2(3 + 1) - 2(3 + 3)     Simplify in the parentheses

-2(4) - 2(6)                 Multiply

-8 - 12                        Subtract

-20

               

shutvik [7]4 years ago
4 0

Answer:

its C -20 and -20

Step-by-step explanation:

just did the quiz got 100%

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Angles α and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of α
8_murik_8 [283]

Answer:

The value of angle α is 18 degree.

Step-by-step explanation:

Given information: Angles α and β are the two acute angles , α < β.

Given equation is

\sin (2x-8)=\cos (6x-6)

\cos (90-(2x-8))=\cos (6x-6)        [\because \sin (90-x)=\cos x]

Equating both sides.

90-2x+8=6x-6

98+6=6x+2x

104=8x

13=x

The value of x is 13.

The measure of angles is

2x-8=2(13)-8=18

6x-6=6(13)-6=72

Since 18<72, therefore the value of angle α is 18 degree.

8 0
4 years ago
What is 4x + 3 = 2x +7
VARVARA [1.3K]
Bring like terms together
(REMEMBER CHANGE THE SIGN WHEN MOVING ACROSS THE EQUAL SIGN i.e. - becomes + and + becomes -)
4x - 2x = 7 - 3
2x = 4
divide both sides by 2
x = 2
4 0
4 years ago
Read 2 more answers
Can anyone help??? due in 10 mins please.
belka [17]

Step-by-step explanation:

(6x+4)+(4x+26)+110°=180°{straight angle}

10x+140=180°

10x=180-140

x=40/4

x=10

(6x+4)=(6×10+4)=(60+4)=64°

(4x+26)=(4×10+26)=40+26=66°

hope it helps.

8 0
4 years ago
Read 2 more answers
John bought a car for $8,000. After one year the car depreciates in value
Bad White [126]

Your answer will be 7,040.

<em>HOW TO SOLVE: </em>We start out with the car's value of 8,000. You see that the value of the vehicle is going to <em>depreciate, </em>or lower. It will depreciate by 12%, so we need to find 12% of 8,000.

This will you get you 960. All we need to do now is subtract 960 from 8,000, so you will be left with 7040.

6 0
3 years ago
How do you do this question?
daser333 [38]

Answer:

B. 1/2

Step-by-step explanation:

\lim_{z \to 0} \frac{g(z)e^{-z}-3}{z^{2}-2z}

If we plug in 0 for z, we get 0/0.  Apply l'Hopital's rule.

\lim_{z \to 0} \frac{-g(z)e^{-z}+g'(z)e^{-z}}{2z-2}

Now when we plug in 0 for z, we get:

\frac{-g(0)e^{0}+g'(0)e^{0}}{2(0)-2}\\\frac{-g(0)+g'(0)}{-2}\\\frac{-3+2}{-2}\\\frac{1}{2}

4 0
3 years ago
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